overview

1. General Description

<p class="bady">The Evaluation Board demonstrates the RT9426AWSC to provide fuel gauging for single-cell battery packs. The RT9426AWSC reports StateOfCharge, StateOfHealth, FullChargeCapacity, TimeToEmpty and CycleCount. The RT9426AWSC also provides complete battery status monitor with interrupt alarm function. It could alert to host processor actively when condition of battery over/undervoltage, under SOC, SOC change, battery presence status change and over-temperature in charge/discharge.</p>

2. Performance Spcification Summary

<p class="bady">Summary of the RT9426AWSC Evaluation Board performance specificiaiton is provided in Table 1. The ambient temperature is 25°C.</p> <p class="MsoNormal">Table 1. RT9426AWSC Evaluation Board Performance Specification Summary</p> <div> <table class="MsoTableLightListAccent2" border="1" cellspacing="0" cellpadding="0" width="680" style="width: 510.2pt; border-collapse: collapse; border: none;"> <tbody> <tr style="height: 17pt;"> <td style="width: 148.65pt; border: 1pt solid #009eb8; background: #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpFirst">Specification</p> </td> <td style="width: 214.4pt; border-top: 1pt solid #009eb8; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-image: initial; border-left: none; background: #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpMiddle">Test Conditions</p> </td> <td style="width: 38.35pt; border-top: 1pt solid #009eb8; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-image: initial; border-left: none; background: #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpMiddle">Min</p> </td> <td style="width: 38.35pt; border-top: 1pt solid #009eb8; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-image: initial; border-left: none; background: #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpMiddle">Typ</p> </td> <td style="width: 38.4pt; border-top: 1pt solid #009eb8; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-image: initial; border-left: none; background: #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpMiddle">Max</p> </td> <td style="border-top: 1pt solid #009eb8; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-image: initial; border-left: none; background: #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpLast">Unit</p> </td> </tr> <tr style="height: 17pt;"> <td style="width: 148.65pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpFirst">Operation Voltage</p> </td> <td style="width: 214.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpMiddle">VBAT - VSS</p> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpMiddle">2.5</p> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpMiddle">--</p> </td> <td style="width: 38.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpMiddle">5.5</p> </td> <td style="border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpLast">V</p> </td> </tr> <tr style="height: 39.7pt;"> <td style="width: 148.65pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 39.7pt;"> <p class="ListParagraph1CxSpFirst">Active Current</p> </td> <td style="width: 214.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 39.7pt;"> <p class="ListParagraph1CxSpMiddle">Active mode, VDD = 3.8V, </p> <p class="ListParagraph1CxSpMiddle">BD_PRES_EN = 0 and not including external temp. measurement current.</p> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 39.7pt;"> <p class="ListParagraph1CxSpMiddle">--</p> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 39.7pt;"> <p class="ListParagraph1CxSpMiddle">14</p> </td> <td style="width: 38.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 39.7pt;"> <p class="ListParagraph1CxSpMiddle">20</p> </td> <td style="border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 39.7pt;"> <p class="ListParagraph1CxSpLast">µA</p> </td> </tr> <tr style="height: 39.7pt;"> <td style="width: 148.65pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 39.7pt;"> <p class="Default">Sleep Current</p> </td> <td style="width: 214.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 39.7pt;"> <p class="ListParagraph1CxSpFirst">Sleep mode, VDD = 3.8V,</p> <p class="ListParagraph1CxSpMiddle">BD_PRES_EN = 0 and not including external temp. measurement current.</p> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 39.7pt;"> <p class="ListParagraph1CxSpMiddle">--</p> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 39.7pt;"> <p class="ListParagraph1CxSpMiddle">5</p> </td> <td style="width: 38.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 39.7pt;"> <p class="ListParagraph1CxSpMiddle">7</p> </td> <td style="border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 39.7pt;"> <p class="ListParagraph1CxSpLast">µA</p> </td> </tr> <tr style="height: 17pt;"> <td style="width: 148.65pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 17pt;"> <p class="Default">Shutdown Current</p> </td> <td style="width: 214.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpFirst">VBAT = 3.8V</p> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpMiddle">--</p> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpMiddle">--</p> </td> <td style="width: 38.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpMiddle">1</p> </td> <td style="border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpLast">µA</p> </td> </tr> <tr style="height: 17pt;"> <td style="width: 148.65pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 17pt;"> <p class="Default">Voltage Measurement Range</p> </td> <td style="width: 214.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpMiddle">2.5</p> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpMiddle">--</p> </td> <td style="width: 38.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpMiddle">VBAT</p> </td> <td style="border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpLast">V</p> </td> </tr> <tr style="height: 17pt;"> <td style="width: 148.65pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 17pt;"> <p class="Default">Voltage Measurement Error</p> </td> <td style="width: 214.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpFirst">VBATS = 4V, VBATG = 0V</p> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpMiddle"><span lang="EN-US" style="font-size: 10pt; font-family: Symbol;">-</span>7.5</p> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpMiddle">--</p> </td> <td style="width: 38.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpMiddle">7.5</p> </td> <td style="border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpLast">mV</p> </td> </tr> <tr style="height: 17pt;"> <td style="width: 148.65pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpFirst">Current Measurement Range</p> </td> <td style="width: 214.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpMiddle">V_CSP - V_CSN</p> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpMiddle"><span lang="EN-US" style="font-size: 10pt; font-family: Symbol;">-</span>125</p> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpMiddle">--</p> </td> <td style="width: 38.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpMiddle">125</p> </td> <td style="border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpLast">mV</p> </td> </tr> <tr style="height: 1cm;"> <td style="width: 148.65pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 1cm;"> <p class="Default">Current Measurement Gain Error</p> </td> <td style="width: 214.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="Default">|V_CSP - V_CSN| = 20mV</p> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="ListParagraph1CxSpFirst"><span lang="EN-US" style="font-size: 10pt; font-family: Symbol;">-</span>1</p> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="ListParagraph1CxSpMiddle">--</p> </td> <td style="width: 38.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="ListParagraph1CxSpMiddle">1</p> </td> <td style="border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="ListParagraph1CxSpLast">%</p> </td> </tr> <tr style="height: 1cm;"> <td style="width: 148.65pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 1cm;"> <p class="Default">Current Measurement Offset Error</p> </td> <td style="width: 214.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="Default">|VCSP - VCSN| = 0V (Note1)</p> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="ListParagraph1"><span lang="EN-US" style="font-size: 10pt; font-family: Symbol;">-</span>10</p> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="Default">±5</p> </td> <td style="width: 38.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="ListParagraph1CxSpFirst">10</p> </td> <td style="border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="ListParagraph1CxSpLast">µV</p> </td> </tr> <tr style="height: 1cm;"> <td style="width: 148.65pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 1cm;"> <p class="Default">Temperature Measurement Error</p> </td> <td style="width: 214.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="Default">T_A = 25°C (Note 2)</p> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="ListParagraph1"><span lang="EN-US" style="font-size: 10pt; font-family: Symbol;">-</span>3</p> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="Default">--</p> </td> <td style="width: 38.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="ListParagraph1">3</p> </td> <td style="border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="Default">°C</p> </td> </tr> <tr style="height: 1cm;"> <td style="width: 148.65pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 1cm;"> <p class="Default">Internal Temperature Measurement Range</p> </td> <td style="width: 214.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="ListParagraph1"><span lang="EN-US" style="font-size: 10pt; font-family: Symbol;">-</span>40</p> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="Default">--</p> </td> <td style="width: 38.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="ListParagraph1">85</p> </td> <td style="border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="Default">°C</p> </td> </tr> <tr style="height: 1cm;"> <td style="width: 148.65pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 1cm;"> <p class="Default">Internal Temperature</p> <p class="Default">Measurement Error</p> </td> <td style="width: 214.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="Default">T_A = 25°C</p> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="ListParagraph1">--</p> </td> <td style="width: 38.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="Default">±3</p> </td> <td style="width: 38.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="ListParagraph1">--</p> </td> <td style="border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="Default">°C</p> </td> </tr> </tbody> </table> </div> <p class="Default">Note 1. Typical result is long time average.</p> <p class="Default">Note 2. The thermistor is use 10k NTC and beta 3435k, default is SEMITEC 103KT1608T.</p>

3. Power-up Procedure

<h3>Suggestion Required Equipments</h3> <ul> <li>RT9426AWSC Evaluation Board </li> <li>DC power supply capable of 6V and 5A </li> <li>1-Series (1sXp) Li-Ion/Li-Polymer Battery Cell </li> <li>Electronic load capable of 5A</li> <li>I²C communication Host</li> </ul>

4. Proper measurement equipment setup and follow the procedure below.

<p class="bady">The Evaluation Board is fully assembled and tested. Follow the steps below to verify board operation. </p> <p class="MsoListParagraph">1) Insert battery to battery connector between B+ and B-</p> <p class="MsoListParagraph">2) For discharge, connect electronic load from P+ to P-, adjust the discharge current according to battery spec.</p> <p class="MsoListParagraph">3) For charge, connect DC power supply from P+ to P-, adjust the CV/CC according to battery spec.</p> <p class="MsoListParagraph">4) Get the information like <em>StateOfCharge</em>, <em>StateOfHealth</em>, <em>FullChargeCapacity</em>, <em>TimeToEmpty</em>, <em>CycleCount</em>, <em>Voltage</em>, <em>Current</em> and <em>Temperature</em> by I²C interface.</p> <p class="MsoNormal">Note: Contact with RICHTEK for detatiled battery characterizing to get custom parameter for high accuracy <em>StateOfCharge</em> (SOC)report.</p>

5. Detailed Description of Hardware

<h3>Headers Description and Placement</h3> <p class="21"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9426awsc/html-images/image001_en.jpg"><img width="491" height="316" id="圖片 11" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9426awsc/html-images/image001_en.jpg" alt="一張含有 文字, 電路, 電子用品 的圖片 自動產生的描述" /></a></p> <p class="MsoNormal">Carefully inspect all the components used in the EVB according to the following Bill of Materials table, and then make sure all the components are undamaged and correctly installed. If there is any missing or damaged component, which may occur during transportation, please contact our distributors or e-mail us at <a href="mailto:evb_service@richtek.com" class="link">evb_service@richtek.com</a>.</p>

6. Test Points

<p class="MsoNormal">The EVB is provided with the test points and pin names listed in the table below.</p> <table class="MsoTableLightListAccent2" border="1" cellspacing="0" cellpadding="0" width="680" style="width: 510.2pt; margin-left: 1.85pt; border-collapse: collapse; border: none;"> <thead> <tr style="height: 1cm;"> <td style="width: 14.64%; border: 1pt solid #009eb8; background: #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="23CxSpFirst">Test Point/</p> <p class="23CxSpMiddle">Pin Name</p> </td> <td style="width: 85.36%; border-top: 1pt solid #009eb8; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-image: initial; border-left: none; background: #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="23CxSpLast">Function</p> </td> </tr> </thead> <tbody> <tr style="height: 17pt;"> <td style="width: 14.64%; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpFirst">VBAT</p> </td> <td style="width: 85.36%; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpLast">Power supply input and battery voltage sensing input for WL-CSP package.</p> </td> </tr> <tr style="height: 17pt;"> <td style="width: 14.64%; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpFirst">VPTS</p> </td> <td style="width: 85.36%; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpLast">Power reference output pin for temperature measurement</p> </td> </tr> <tr style="height: 17pt;"> <td style="width: 14.64%; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpFirst">VSS</p> </td> <td style="width: 85.36%; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpLast">Device ground</p> </td> </tr> <tr style="height: 1cm;"> <td style="width: 14.64%; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 1cm;"> <p class="ListParagraph1CxSpFirst">CSP</p> </td> <td style="width: 85.36%; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="ListParagraph1CxSpLast">Battery current sensing positive input. Connect a 10mΩ sense resistor with kelvin connection where is near B-side.</p> </td> </tr> <tr style="height: 1cm;"> <td style="width: 14.64%; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 1cm;"> <p class="ListParagraph1CxSpFirst">CSN</p> </td> <td style="width: 85.36%; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="ListParagraph1CxSpLast">Battery current sensing negative input. Connect a 10mΩ sense resistor with kelvin connection where is near PACK- side.</p> </td> </tr> <tr style="height: 17pt;"> <td style="width: 14.64%; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpFirst">TS</p> </td> <td style="width: 85.36%; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpLast">Temperature measurement input.</p> </td> </tr> <tr style="height: 1cm;"> <td style="width: 14.64%; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 1cm;"> <p class="ListParagraph1CxSpFirst">SDA</p> </td> <td style="width: 85.36%; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="ListParagraph1CxSpLast">Serial data input. Slave I²C serial communications data line for communication with system. Open-drain I/O.</p> </td> </tr> <tr style="height: 1cm;"> <td style="width: 14.64%; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 1cm;"> <p class="ListParagraph1CxSpFirst">SCL</p> </td> <td style="width: 85.36%; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 1cm;"> <p class="ListParagraph1CxSpLast">Serial clock input. Slave I²C serial communications clock line for communication with system. Open-drain I/O.</p> </td> </tr> <tr style="height: 17pt;"> <td style="width: 14.64%; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpFirst">ALERT</p> </td> <td style="width: 85.36%; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpLast">Alert open-drain indicator output.</p> </td> </tr> <tr style="height: 17pt;"> <td style="width: 14.64%; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpFirst">J1</p> </td> <td style="width: 85.36%; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpLast">Battery Connector.</p> </td> </tr> <tr style="height: 17pt;"> <td style="width: 14.64%; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpFirst">J2</p> </td> <td style="width: 85.36%; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpLast">Load/Charger Connector.</p> </td> </tr> <tr style="height: 17pt;"> <td style="width: 14.64%; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpFirst">J3</p> </td> <td style="width: 85.36%; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpLast">I²C communication interface.</p> </td> </tr> <tr style="height: 17pt;"> <td style="width: 14.64%; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpFirst">J4</p> </td> <td style="width: 85.36%; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 17pt;"> <p class="ListParagraph1CxSpLast">Alert pull-high enable.</p> </td> </tr> </tbody> </table>

7. Bill of Materials

<div> <table class="TableNormal" border="1" cellspacing="0" cellpadding="0" width="680" style="border-collapse: collapse; border: none;"> <thead> <tr style="height: 17pt;"> <td style="width: 54.35pt; border: 1pt solid #009eb8; background: #009eb8; padding: 0cm; height: 17pt;"> <p class="TableParagraph">Reference</p> </td> <td style="width: 28pt; border-top: 1pt solid #009eb8; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-image: initial; border-left: none; background: #009eb8; padding: 0cm; height: 17pt;"> <p class="TableParagraph">Count</p> </td> <td style="width: 119.7pt; border-top: 1pt solid #009eb8; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-image: initial; border-left: none; background: #009eb8; padding: 0cm; height: 17pt;"> <p class="TableParagraph">Part Number</p> </td> <td style="width: 71.4pt; border-top: 1pt solid #009eb8; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-image: initial; border-left: none; background: #009eb8; padding: 0cm; height: 17pt;"> <p class="TableParagraph">Value</p> </td> <td style="width: 89.55pt; border-top: 1pt solid #009eb8; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-image: initial; border-left: none; background: #009eb8; padding: 0cm; height: 17pt;"> <p class="TableParagraph">Description</p> </td> <td style="width: 77.7pt; border-top: 1pt solid #009eb8; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-image: initial; border-left: none; background: #009eb8; padding: 0cm; height: 17pt;"> <p class="TableParagraph">Package</p> </td> <td style="width: 69.5pt; border-top: 1pt solid #009eb8; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-image: initial; border-left: none; background: #009eb8; padding: 0cm; height: 17pt;"> <p class="TableParagraph">Manufacturer</p> </td> </tr> </thead> <tbody> <tr style="height: 1cm;"> <td style="width: 54.35pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm; height: 1cm;"> <p class="MsoNormal">U1</p> </td> <td style="width: 28pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">1</p> </td> <td style="width: 119.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">RT9426AWSC</p> </td> <td style="width: 71.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">RT9426AWSC</p> </td> <td style="width: 89.55pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">Single-Cell </p> <p class="MsoNormal">Fuel Gauge</p> </td> <td style="width: 77.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">WL-CSP-9B 2.29x1.74 (BSC)</p> </td> <td style="width: 69.5pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">RICHTEK</p> </td> </tr> <tr style="height: 1cm;"> <td style="width: 54.35pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm; height: 1cm;"> <p class="MsoNormal">C1</p> </td> <td style="width: 28pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">1</p> </td> <td style="width: 119.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">0603X105K250CT</p> </td> <td style="width: 71.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">1µF</p> </td> <td style="width: 89.55pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">Capacitor, Ceramic, 25V, X5R</p> </td> <td style="width: 77.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">0603</p> </td> <td style="width: 69.5pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">WALSIN</p> </td> </tr> <tr style="height: 1cm;"> <td style="width: 54.35pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm; height: 1cm;"> <p class="MsoNormal">C2</p> </td> <td style="width: 28pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">1</p> </td> <td style="width: 119.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">0603B103K500CT</p> </td> <td style="width: 71.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">10nF</p> </td> <td style="width: 89.55pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">Capacitor, Ceramic, 50V, X7R</p> </td> <td style="width: 77.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">0603</p> </td> <td style="width: 69.5pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">WALSIN</p> </td> </tr> <tr style="height: 1cm;"> <td style="width: 54.35pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm; height: 1cm;"> <p class="MsoNormal">C3, C4, C5</p> </td> <td style="width: 28pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">3</p> </td> <td style="width: 119.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">0603B104K250CT</p> </td> <td style="width: 71.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">0.1µF</p> </td> <td style="width: 89.55pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">Capacitor, Ceramic, 25V, X7R</p> </td> <td style="width: 77.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">0603</p> </td> <td style="width: 69.5pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">WALSIN</p> </td> </tr> <tr style="height: 17pt;"> <td style="width: 54.35pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm; height: 17pt;"> <p class="MsoNormal">C6, C7</p> </td> <td style="width: 28pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 17pt;"> <p class="MsoNormal">2</p> </td> <td style="width: 119.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 17pt;"> </td> <td style="width: 71.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 17pt;"> </td> <td style="width: 89.55pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 17pt;"> <p class="MsoNormal">NC</p> </td> <td style="width: 77.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 17pt;"> </td> <td style="width: 69.5pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 17pt;"> </td> </tr> <tr style="height: 1cm;"> <td style="width: 54.35pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm; height: 1cm;"> <p class="MsoNormal">R1</p> </td> <td style="width: 28pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">1</p> </td> <td style="width: 119.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">WR06X1002FTL</p> </td> <td style="width: 71.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">10k</p> </td> <td style="width: 89.55pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">Resistor, Chip, 1/10W, 1%</p> </td> <td style="width: 77.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">0603</p> </td> <td style="width: 69.5pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">WALSIN</p> </td> </tr> <tr style="height: 1cm;"> <td style="width: 54.35pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm; height: 1cm;"> <p class="MsoNormal">R2</p> </td> <td style="width: 28pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">1</p> </td> <td style="width: 119.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">103KT1608T</p> </td> <td style="width: 71.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">10k</p> </td> <td style="width: 89.55pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">NTC Resistor, Chip, 3435K, 1%</p> </td> <td style="width: 77.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">0603</p> </td> <td style="width: 69.5pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">SEMITEC</p> </td> </tr> <tr style="height: 51pt;"> <td style="width: 54.35pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm; height: 51pt;"> <p class="MsoNormal">R3, R4, R8, R9, R10, R11, R12, R13</p> </td> <td style="width: 28pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 51pt;"> <p class="MsoNormal">8</p> </td> <td style="width: 119.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 51pt;"> <p class="MsoNormal">WR06X1000FTL</p> </td> <td style="width: 71.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 51pt;"> <p class="MsoNormal">100</p> </td> <td style="width: 89.55pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 51pt;"> <p class="MsoNormal">Resistor, Chip, 1/10W, 1%</p> </td> <td style="width: 77.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 51pt;"> <p class="MsoNormal">0603</p> </td> <td style="width: 69.5pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 51pt;"> <p class="MsoNormal">WALSIN</p> </td> </tr> <tr style="height: 1cm;"> <td style="width: 54.35pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm; height: 1cm;"> <p class="MsoNormal">R7</p> </td> <td style="width: 28pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">1</p> </td> <td style="width: 119.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">RTT034701FTP</p> </td> <td style="width: 71.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">4.7k</p> </td> <td style="width: 89.55pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">Resistor, Chip, 1/10W, 1%</p> </td> <td style="width: 77.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">SMB</p> </td> <td style="width: 69.5pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">RALEC</p> </td> </tr> <tr style="height: 17pt;"> <td style="width: 54.35pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm; height: 17pt;"> <p class="MsoNormal">R5, R6</p> </td> <td style="width: 28pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 17pt;"> <p class="MsoNormal">2</p> </td> <td style="width: 119.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 17pt;"> </td> <td style="width: 71.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 17pt;"> </td> <td style="width: 89.55pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 17pt;"> <p class="MsoNormal">NC</p> </td> <td style="width: 77.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 17pt;"> </td> <td style="width: 69.5pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 17pt;"> </td> </tr> <tr style="height: 1cm;"> <td style="width: 54.35pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm; height: 1cm;"> <p class="MsoNormal">RS1, RS2</p> </td> <td style="width: 28pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">2</p> </td> <td style="width: 119.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">RLM-0816-3F-R010-FNH</p> </td> <td style="width: 71.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">0.01</p> </td> <td style="width: 89.55pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">Current Sense Resistor, 1W, 1%</p> </td> <td style="width: 77.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">0603</p> </td> <td style="width: 69.5pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 1cm;"> <p class="MsoNormal">Cyntec</p> </td> </tr> <tr style="height: 17pt;"> <td style="width: 54.35pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm; height: 17pt;"> <p class="MsoNormal">D1, D2, D3</p> </td> <td style="width: 28pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 17pt;"> <p class="MsoNormal">3</p> </td> <td style="width: 119.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 17pt;"> </td> <td style="width: 71.4pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 17pt;"> </td> <td style="width: 89.55pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 17pt;"> <p class="MsoNormal">NC</p> </td> <td style="width: 77.7pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 17pt;"> </td> <td style="width: 69.5pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm; height: 17pt;"> </td> </tr> </tbody> </table> </div>

8. Typical Applications

<h3>EVB Schematic Diagram</h3> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9426awsc/html-images/image002_en.jpg"><img width="567" height="365" id="圖片 12" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9426awsc/html-images/image002_en.jpg" alt="Technical Document Image Preview" style="border-width: 0px; border-style: solid;" /></a></p> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9426awsc/html-images/image003_en.jpg"><img width="606" height="122" id="圖片 8" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9426awsc/html-images/image003_en.jpg" alt="Technical Document Image Preview" style="border-width: 0px; border-style: solid;" /></a></p> <p class="MsoNormal">1. RT9426AWSC can support high/low-side current sensing, EVB is default low side sense setup.</p> <p class="MsoListParagraph">- Mount RS1/R3/R4 for Low-Side Sensing.</p> <p class="MsoListParagraph">- Mount RS2/R5/R6 for High-Side Sensing.</p>

9. Measurement Result

<table class="MsoNormalTable" border="1" cellspacing="0" cellpadding="0" style="margin-left: 26.35pt; border-collapse: collapse; border: none;"> <tbody> <tr> <td style="width: 229.8pt; border: 1pt solid #009eb8; background: #009eb8; padding: 0cm 5.4pt;"> <p class="MsoNormal">Voltage ADC Error vs. Temperature</p> </td> <td style="width: 230.35pt; border-top: 1pt solid #009eb8; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-image: initial; border-left: none; background: #009eb8; padding: 0cm 5.4pt;"> <p class="MsoNormal">Current ADC Error vs. Temperature</p> </td> </tr> <tr style="height: 168.2pt;"> <td style="width: 229.8pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 168.2pt;"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9426awsc/html-images/image004_en.png"><img width="292" height="254" id="圖片 1" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9426awsc/html-images/image004_en.png" alt="Technical Document Image Preview" style="border-width: 0px; border-style: solid;" /></a></p> </td> <td style="width: 230.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 168.2pt;"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9426awsc/html-images/image005_en.png"><img width="293" height="241" id="圖片 9" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9426awsc/html-images/image005_en.png" alt="Technical Document Image Preview" style="border-width: 0px; border-style: solid;" /></a></p> </td> </tr> <tr> <td style="width: 229.8pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; background: #009eb8; padding: 0cm 5.4pt;"> <p class="MsoNormal">Temp. Measurement Error vs. Temperature</p> </td> <td style="width: 230.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; background: #009eb8; padding: 0cm 5.4pt;"> <p class="MsoNormal">SOC Accuracy* </p> </td> </tr> <tr style="height: 172.95pt;"> <td style="width: 229.8pt; border-right: 1pt solid #009eb8; border-bottom: 1pt solid #009eb8; border-left: 1pt solid #009eb8; border-image: initial; border-top: none; padding: 0cm 5.4pt; height: 172.95pt;"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9426awsc/html-images/image006_en.png"><img width="292" height="237" id="圖片 14" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9426awsc/html-images/image006_en.png" alt="Technical Document Image Preview" style="border-width: 0px; border-style: solid;" /></a></p> </td> <td style="width: 230.35pt; border-top: none; border-left: none; border-bottom: 1pt solid #009eb8; border-right: 1pt solid #009eb8; padding: 0cm 5.4pt; height: 172.95pt;"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9426awsc/html-images/image007_en.png"><img width="293" height="217" id="圖片 18" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9426awsc/html-images/image007_en.png" alt="Technical Document Image Preview" style="border-width: 0px; border-style: solid;" /></a></p> </td> </tr> </tbody> </table> <p class="MsoNormal">*: Sample accuracy with custom parameter into the IC.</p>

10. Evaluation Board Layout

<p class="MsoNormal">Figure 1 and Figure 2 are RT9426AWSC Evaluation Board layout. This board size is 55mm x 40mm and is constructed on two-layer PCB with 1 oz. Cu.</p> <p class="23CxSpFirst"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9426awsc/html-images/image008_en.jpg"><img width="492" height="355" id="圖片 15" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9426awsc/html-images/image008_en.jpg" alt="Technical Document Image Preview" style="border-width: 0px; border-style: solid;" /></a></p> <p class="23CxSpMiddle">Figure 1. Top View</p> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9426awsc/html-images/image009_en.jpg"><img width="491" height="355" id="圖片 16" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9426awsc/html-images/image009_en.jpg" alt="一張含有 文字, 電子用品 的圖片 自動產生的描述" style="border-width: 0px; border-style: solid;" /></a></p> <p class="10">Figure 2. Bottom View</p>