overview

1. Purpose

<p class="MsoNormal">The RT4532 is a high-efficiency LED driver for backlight applications with an internal schottky diode and current source driver.</p> <p class="MsoNormal">It supports linear mappings with 256 steps to setup the brightness of backlight LEDs. It also supports PWM dimming to adjust the brightness. This document explains the function and use of the RT4532 evaluation board (EVB) and provides information to enable operation and modification of the evaluation board and circuit to suit individual requirements. </p>

2. Introduction

<h4> </h4> <h3> General Product Information</h3> <p class="bady">The RT4532 is a high-efficiency LED driver for backlight applications. An asynchronous boost converter with an internal Schottky diode and a current source driver are designed to support 6LED/channel with wide input voltage range from 2.5V to 5.5V.</p> <p class="bady">This document explains the function and use of the RT4532 evaluation board (EVB) and provides information to enable operation and modification of the evaluation board and circuit to suit individual requirements.</p> <h3> Product Feature</h3> <ul> <li>Input Voltage Range : 2.5V to 5.5V</li> <li>Internal Schottky Diode</li> <li>Fast-speed mode I²C Compatible Interface</li> <li>Drive Up to 6 WLEDs in 4 String</li> <li>External PWM Brightness Control</li> <li>550k/1.1MHz Switching Frequency</li> <li>Built-in Internal Soft-Start</li> <li>I²C Programmable 256 Steps Linear Current Regulation</li> <li>Up to 85% Efficiency with Small Magnetics</li> <li>Programmable 16V/24V OVP</li> <li>Current Accuracy ±5% and Current Balance ±3%</li> <li>UVLO, OVP, OCP, OTP Protection</li> <li>Shutdown Current : < 1µA</li> <li>Temperature Range : -40°C to 85°C</li> </ul>

3. Key Performance Summary Table

<div> <table class="MsoTableLightListAccent2" border="1" cellspacing="0" cellpadding="0" width="680" style="width:510.2pt;border-collapse:collapse;border:none"> <tr style="height:17.0pt"> <td width="34%" style="width:34.94%;border:solid #009EB8 1.0pt;background: #009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Key Features</p> </td> <td width="65%" style="width:65.06%;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpLast">Evaluation Board Number : PCB015_V1</p> </td> </tr> <tr style="height:17.0pt"> <td width="34%" style="width:34.94%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Default Input Voltage</p> </td> <td width="65%" style="width:65.06%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpLast">2.5V~5.5V</p> </td> </tr> <tr style="height:17.0pt"> <td width="34%" style="width:34.94%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Max Output Current</p> </td> <td width="65%" style="width:65.06%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpLast">20mA/40mA</p> </td> </tr> <tr style="height:17.0pt"> <td width="34%" style="width:34.94%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Default Output Voltage</p> </td> <td width="65%" style="width:65.06%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpLast">17V</p> </td> </tr> <tr style="height:17.0pt"> <td width="34%" style="width:34.94%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Default Marking & Package Type</p> </td> <td width="65%" style="width:65.06%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpLast">RT4532</p> </td> </tr> <tr style="height:17.0pt"> <td width="34%" style="width:34.94%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Operation Frequency</p> </td> <td width="65%" style="width:65.06%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpLast">Steady 1.1MHz at all loads</p> </td> </tr> <tr style="height:53.1pt"> <td width="34%" style="width:34.94%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:53.1pt"> <p class="ListParagraph1CxSpFirst">Protection</p> </td> <td width="65%" style="width:65.06%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:53.1pt"> <p class="ListParagraph1CxSpMiddle">UVLO</p> <p class="ListParagraph1CxSpMiddle">OVP</p> <p class="ListParagraph1CxSpMiddle">OCP</p> <p class="ListParagraph1CxSpLast">Thermal Shutdown</p> </td> </tr> </table> </div>

4. Bench Test Setup Conditions

<h3>Headers Description and Placement</h3> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4532wsc/html-images/image001_en.jpg"><img width="302" height="211" id="圖片 4" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4532wsc/html-images/image001_en.jpg" alt="Technical Document Image Preview" /></a></p> <p class="2">Please carefully inspect the EVB IC and external components, comparing them to the following Bill of Materials, to ensure that all components are installed and undamaged. If any components are missing or damaged during transportation, please contact the distributor or send e-mail to <a href="mailto:evb_service@richtek.com" class="link">evb_service@richtek.com</a>.</p> <h3> <br /> Test Points</h3> <p class="MsoNormal">The EVB is provided with the test points and pin names listed in the table below.</p> <div> <table class="MsoTableLightListAccent2" border="1" cellspacing="0" cellpadding="0" width="680" style="width:510.2pt;border-collapse:collapse;border:none"> <tr style="height:17.0pt"> <td width="9%" style="width:9.42%;border:solid #009EB8 1.0pt;background:#009EB8; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="10CxSpFirst">Pin No.</p> </td> <td width="11%" style="width:11.26%;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="10CxSpMiddle">Pin Name</p> </td> <td width="79%" style="width:79.32%;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="10CxSpLast">Comment (expected waveforms or voltage levels on test points)</p> </td> </tr> <tr style="height:1.0cm"> <td width="9%" style="width:9.42%;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="ListParagraph1CxSpFirst">A2</p> </td> <td width="11%" style="width:11.26%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="ListParagraph1CxSpLast">GND</p> </td> <td width="79%" style="width:79.32%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="MsoNormal">Ground. The exposed pad must be soldered to a large PCB and connected to GND for maximum thermal dissipation.</p> </td> </tr> <tr style="height:1.0cm"> <td width="9%" style="width:9.42%;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="ListParagraph1CxSpFirst">B1</p> </td> <td width="11%" style="width:11.26%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="ListParagraph1CxSpLast">VOUT</p> </td> <td width="79%" style="width:79.32%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="MsoNormal">Power Output of the Asynchronous Boost Converter for Backlight LEDs. </p> <p class="MsoNormal">Connect a 1μF or larger ceramic capacitor from VOUT to ground.</p> </td> </tr> <tr style="height:1.0cm"> <td width="9%" style="width:9.42%;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="ListParagraph1CxSpFirst">B2</p> </td> <td width="11%" style="width:11.26%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="ListParagraph1CxSpLast">VIN</p> </td> <td width="79%" style="width:79.32%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="MsoNormal">Power Input. Connect this pin to the input power supply voltage. </p> <p class="MsoNormal">Connect a 10μF or larger ceramic capacitor from the VIN to ground.</p> </td> </tr> <tr style="height:17.0pt"> <td width="9%" style="width:9.42%;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">C1</p> </td> <td width="11%" style="width:11.26%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">PWM</p> </td> <td width="79%" style="width:79.32%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpLast">PWM Dimming Input for Backlight LED.</p> </td> </tr> <tr style="height:17.0pt"> <td width="9%" style="width:9.42%;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">C2</p> </td> <td width="11%" style="width:11.26%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpLast">EN</p> </td> <td width="79%" style="width:79.32%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="MsoNormal">Enable Control Input (Active High). The chip is in shutdown mode when the EN pin is low.</p> </td> </tr> <tr style="height:17.0pt"> <td width="9%" style="width:9.42%;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">D1</p> </td> <td width="11%" style="width:11.26%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">SDA</p> </td> <td width="79%" style="width:79.32%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpLast">I²C Serial Data Input/Output. An external pull-up resistor is required.</p> </td> </tr> <tr style="height:17.0pt"> <td width="9%" style="width:9.42%;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">D2</p> </td> <td width="11%" style="width:11.26%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">SCL</p> </td> <td width="79%" style="width:79.32%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpLast">I²C Serial Data Input/Output. An external pull-up resistor is required.</p> </td> </tr> <tr style="height:17.0pt"> <td width="9%" style="width:9.42%;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">E1</p> </td> <td width="11%" style="width:11.26%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">FB2</p> </td> <td width="79%" style="width:79.32%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpLast">Single Output 2 for Backlight LED.</p> </td> </tr> <tr style="height:17.0pt"> <td width="9%" style="width:9.42%;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">E2</p> </td> <td width="11%" style="width:11.26%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">FB1</p> </td> <td width="79%" style="width:79.32%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpLast">Single Output 1 for Backlight LED.</p> </td> </tr> </table> </div> <h3> <br /> Power-up & Measurement Procedure</h3> <p class="MsoListParagraph">1. Apply 3.6V nominal input power supply (2.5V < V_IN < 5.5V) to the VIN and GND terminals.</p> <p class="MsoListParagraph">2. The EN voltage is pulled to logic high by internal circuit to enable operation. Drive EN high (>1.05V) to enable operation or low (<0.4V) to disable operation. Pull EN pin to High pin that make EN voltage equal to VIN.</p> <p class="MsoListParagraph">3. There is a 2-pin header JP2 “EN” for enable control. To use a jumper at “H” option to tie EN test pin to input power VIN for enabling the device. Inversely, to use a jumper at “L” option to tie EN test pin and ground GND for disabling the device.</p> <p class="MsoListParagraph">4. The JP4 is the I²C control pin that incloud SDA, SCL, GND pin, and it need to connect to Richtek WrenBoard when use the RT4532 I²C dimming. </p> <p class="MsoListParagraph">5. The I_LED setting supports I²C dimming and PWM dimming as below.</p> <h3> <br /> Output I_LED Setting</h3> <p class="MsoListParagraph">1. Linear Brightness Dimming</p> <p class="MsoNormal">The chip is built-in an I²C 8-bit resolution brightness control with maximum 20mA/40mA selection. Reg0x02 <3> corresponds to full-scale LED current control. Reg0x04 <7:0> sets 8bits resolution brightness dimming control.</p> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4532wsc/html-images/image002_en.jpg"><img width="164" height="43" style="border-width: 0px; border-style: solid;" id="圖片 8" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4532wsc/html-images/image002_en.jpg" alt="Technical Document Image Preview" /></a></p> <p class="MsoNormal">Where</p> <p class="MsoNormal">I_{LED, Full} : the full-scale LED current set by Reg0x02 <3>.</p> <p class="MsoNormal">Code : the 8bit brightness code Reg0x04 <7:0> programmed by I²C interface.</p> <p class="MsoListParagraph">2. PWM Brightness Dimming</p> <p class="MsoNormal">Besides programmable built-in I²C backlight LED current control, the RT4532 features a built-in PWM dimming current control by setting Reg0x02 <6> to 1, offering a linear current dimming by external clock source. In order to guarantee the PWM dimming resolution (7 bit at >15kHz application), recommending dimming frequency have to be operated at range of 400Hz to 20kHz.</p> <p class="MsoListParagraph">3. LED Short Protection</p> <p class="MsoNormal">LED short protection prevents abnormal connection to cause IC damage avoiding FB1/FB2 connecting power supply. And, If unbalanced LEDs series (cause FB1 or FB2 > 9.6V) is different between channel1 and channel2, IC will also occur LED short event. As LED short event occur more than deglitch time 2ms, IC will shut-down latch until IC is reset by EN pin.</p> <p class="MsoNormal"> </p>

5. Schematic, Bill of Materials & Board Layout

<h3> <br /> EVB Schematic Diagram</h3> <p class="a5"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4532wsc/html-images/image003_en.jpg"><img width="680" height="514" style="border-width: 0px; border-style: solid;" id="圖片 2" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4532wsc/html-images/image003_en.jpg" alt="Technical Document Image Preview" /></a></p> <h3> <br /> Bill of Materials</h3> <div> <table class="MsoTableLightListAccent2" border="1" cellspacing="0" cellpadding="0" width="680" style="border-collapse:collapse;border:none"> <tr style="height:17.0pt"> <td width="16%" style="width:16.66%;border:solid #009EB8 1.0pt;background: #009EB8;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">Reference</p> </td> <td width="4%" style="width:4.18%;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">Qty</p> </td> <td width="22%" style="width:22.22%;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">Part Number</p> </td> <td width="22%" style="width:22.06%;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">Description</p> </td> <td width="19%" style="width:19.62%;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">Package</p> </td> <td width="15%" style="width:15.26%;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">Manufacture</p> </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.66%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">U2</p> </td> <td width="4%" style="width:4.18%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">1</p> </td> <td width="22%" style="width:22.22%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">RT4532</p> </td> <td width="22%" style="width:22.06%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">DC-DC Converter</p> </td> <td width="19%" style="width:19.62%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">CSP-10B 0.87x2.07</p> </td> <td width="15%" style="width:15.26%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">RICHTEK</p> </td> </tr> <tr style="height:1.0cm"> <td width="16%" style="width:16.66%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p class="MsoNormal">L1</p> </td> <td width="4%" style="width:4.18%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p class="MsoNormal">1</p> </td> <td width="22%" style="width:22.22%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p class="MsoNormal">NR4018T100M</p> </td> <td width="22%" style="width:22.06%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p class="MsoNormal">10µH/1.2A/±20%, <br /> DCR = 0.18Ω, Inductor</p> </td> <td width="19%" style="width:19.62%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p class="MsoNormal">4mm x 4mm x 1.8mm</p> </td> <td width="15%" style="width:15.26%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p class="MsoNormal">TAIYO YUDEN</p> </td> </tr> <tr style="height:1.0cm"> <td width="16%" style="width:16.66%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p class="MsoNormal">C1</p> </td> <td width="4%" style="width:4.18%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p class="MsoNormal">1</p> </td> <td width="22%" style="width:22.22%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p class="MsoNormal">0603X106M6R3</p> </td> <td width="22%" style="width:22.06%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p class="MsoNormal">10µF/±20%/ 6.3V/X5R</p> <p class="MsoNormal">Ceramic Capacitor</p> </td> <td width="19%" style="width:19.62%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p class="MsoNormal">0603</p> </td> <td width="15%" style="width:15.26%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p class="MsoNormal">Walsin</p> </td> </tr> <tr style="height:1.0cm"> <td width="16%" style="width:16.66%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p class="MsoNormal">C3</p> </td> <td width="4%" style="width:4.18%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p class="MsoNormal">1</p> </td> <td width="22%" style="width:22.22%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p class="MsoNormal">C2012X7R1H105KT</p> </td> <td width="22%" style="width:22.06%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p class="MsoNormal">1µF/±10%/50V/X7R</p> <p class="MsoNormal">Ceramic Capacitor</p> </td> <td width="19%" style="width:19.62%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p class="MsoNormal">0805</p> </td> <td width="15%" style="width:15.26%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p class="MsoNormal">TDK</p> </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.66%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">R7</p> </td> <td width="4%" style="width:4.18%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">1</p> </td> <td width="22%" style="width:22.22%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> </td> <td width="22%" style="width:22.06%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">Short</p> </td> <td width="19%" style="width:19.62%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> </td> <td width="15%" style="width:15.26%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.66%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">R11</p> </td> <td width="4%" style="width:4.18%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">1</p> </td> <td width="22%" style="width:22.22%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> </td> <td width="22%" style="width:22.06%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">Short</p> </td> <td width="19%" style="width:19.62%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> </td> <td width="15%" style="width:15.26%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.66%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">R13</p> </td> <td width="4%" style="width:4.18%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">1</p> </td> <td width="22%" style="width:22.22%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> </td> <td width="22%" style="width:22.06%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">Short</p> </td> <td width="19%" style="width:19.62%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> </td> <td width="15%" style="width:15.26%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> </td> </tr> <tr style="height:99.95pt"> <td width="16%" style="width:16.66%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 1.4pt 0cm 1.4pt;height:99.95pt"> <p class="MsoNormal">D32, D34, D36,</p> <p class="MsoNormal">D33, D35, D37,</p> <p class="MsoNormal">D38, D40, D62,</p> <p class="MsoNormal">D39, D41, D63,</p> <p class="MsoNormal">D46, D48, D50,</p> <p class="MsoNormal">D47, D49, D51,</p> <p class="MsoNormal">D42, D44, D64,</p> <p class="MsoNormal">D43, D45, D65</p> </td> <td width="4%" style="width:4.18%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:99.95pt"> <p class="MsoNormal">24</p> </td> <td width="22%" style="width:22.22%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:99.95pt"> </td> <td width="22%" style="width:22.06%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:99.95pt"> <p class="MsoNormal">LED</p> </td> <td width="19%" style="width:19.62%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:99.95pt"> </td> <td width="15%" style="width:15.26%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:99.95pt"> </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.66%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">TP</p> </td> <td width="4%" style="width:4.18%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">6</p> </td> <td width="22%" style="width:22.22%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">3V3, SCL, SDA,</p> <p class="MsoNormal">1V8, FB1, FB2</p> </td> <td width="22%" style="width:22.06%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">Test Pin</p> </td> <td width="19%" style="width:19.62%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> </td> <td width="15%" style="width:15.26%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.66%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">GP</p> </td> <td width="4%" style="width:4.18%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">4</p> </td> <td width="22%" style="width:22.22%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">VIN, GND, GND, VOUT</p> </td> <td width="22%" style="width:22.06%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">Golden Pin</p> </td> <td width="19%" style="width:19.62%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> </td> <td width="15%" style="width:15.26%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.66%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">JP</p> </td> <td width="4%" style="width:4.18%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">3</p> </td> <td width="22%" style="width:22.22%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">JP1, JP2, JP4</p> </td> <td width="22%" style="width:22.06%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> </td> <td width="19%" style="width:19.62%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> </td> <td width="15%" style="width:15.26%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> </td> </tr> </table> </div> <h3> <br /> EVB Layout</h3> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4532wsc/html-images/image004_en.jpg"><img width="456" height="306" style="border-width: 0px; border-style: solid;" id="圖片 1" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4532wsc/html-images/image004_en.jpg" alt="Technical Document Image Preview" /></a></p> <p class="MsoNormal">PCB Layout—Top View</p> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4532wsc/html-images/image005_en.jpg"><img width="460" height="306" style="border-width: 0px; border-style: solid;" id="圖片 6" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4532wsc/html-images/image005_en.jpg" alt="Technical Document Image Preview" /></a></p> <p class="MsoNormal">PCB Layout—Bottom Side</p>