overview

1. General Description

<p class="bady">The RT9471D is a highly-integrated 3A switch mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The I²C serial interface with charging and system settings makes the device a truly flexible solution.</p>

2. Performance Sepcification Summary

<p class="bady">Summary of the RT9471D Evaluation Board performance specificiaiton is provided in Table 1. The ambient temperature is 25°C.</p> <p class="MsoNormal">Table 1. RT9471D 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"> <tr style="height:17.0pt"> <td width="238" style="width:178.25pt;border:solid #009EB8 1.0pt;background: #009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Specification</p> </td> <td width="234" style="width:175.45pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">Test Conditions</p> </td> <td style="border:solid #009EB8 1.0pt;border-left:none;background:#009EB8; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">Min</p> </td> <td style="border:solid #009EB8 1.0pt;border-left:none;background:#009EB8; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">Typ</p> </td> <td style="border:solid #009EB8 1.0pt;border-left:none;background:#009EB8; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">Max</p> </td> <td style="border:solid #009EB8 1.0pt;border-left:none;background:#009EB8; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpLast">Unit</p> </td> </tr> <tr style="height:17.0pt"> <td width="238" style="width:178.25pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Input Voltage Range, VBUS</p> </td> <td width="234" style="width:175.45pt;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"> </td> <td style="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">3.9</p> </td> <td style="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">--</p> </td> <td style="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">13.5</p> </td> <td style="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">V</p> </td> </tr> <tr style="height:17.0pt"> <td width="238" style="width:178.25pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Maximum Input Current, IBUS</p> </td> <td width="234" style="width:175.45pt;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"> </td> <td style="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">0</p> </td> <td style="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">--</p> </td> <td style="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">3.2</p> </td> <td style="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">A</p> </td> </tr> <tr style="height:17.0pt"> <td width="238" style="width:178.25pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Maximum Input Current, IBUS</p> </td> <td width="234" style="width:175.45pt;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">VBUS ≥ 12V</p> </td> <td style="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">--</p> </td> <td style="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">--</p> </td> <td style="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">2</p> </td> <td style="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">A</p> </td> </tr> <tr style="height:17.0pt"> <td width="238" style="width:178.25pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Maximum Output Current, ISYS</p> </td> <td width="234" style="width:175.45pt;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"> </td> <td style="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">--</p> </td> <td style="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">--</p> </td> <td style="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">3.2</p> </td> <td style="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">A</p> </td> </tr> <tr style="height:17.0pt"> <td width="238" style="width:178.25pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Maximum Battery Voltage, VBAT</p> </td> <td width="234" style="width:175.45pt;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"> </td> <td style="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">--</p> </td> <td style="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">--</p> </td> <td style="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">4.7</p> </td> <td style="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">V</p> </td> </tr> <tr style="height:17.0pt"> <td width="238" style="width:178.25pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Maximum Charge Current, IBAT</p> </td> <td width="234" style="width:175.45pt;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"> </td> <td style="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">--</p> </td> <td style="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">--</p> </td> <td style="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">3.15</p> </td> <td style="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">A</p> </td> </tr> <tr style="height:17.0pt"> <td width="238" style="width:178.25pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Maximum Discharge Current, IBAT</p> </td> <td width="234" style="width:175.45pt;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"> </td> <td style="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">--</p> </td> <td style="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">--</p> </td> <td style="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">6</p> </td> <td style="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">A</p> </td> </tr> </table> </div>

3. Power-up Procedure

<h3>Suggestion Required Equipments</h3> <ul> <li>RT9471D Evaluation Board </li> <li>DC power supply x 2, one for VBAT, one for VBUS </li> <li>Electronic load </li> <li>Oscilloscope</li> </ul>

4. Quick Start Procedures

<p class="bady">The Evaluation Board is fully assembled and tested. Follow the steps below to verify board operation. Do not turn on supplies until all connections are made. </p> <p class="21">Proper measurement equipment setup and follow the procedure below. </p> <p class="MsoNormal">1. Set power source equal 3.8V/5A then connect to BAT and GND of EVB.</p> <p class="MsoNormal">2. Use E-Load connect to power source and enable CC loading from power source.</p> <p class="MsoNormal">3. The AP connect to SCL, SDA and GND of EVB</p> <p class="MsoNormal">4. Check I²C can work normally by connecting to slave address (0x53).</p> <p class="MsoListParagraph">5. Set VBUS = 5V/3A and connect to VBUS and GND of EVB.</p> <p class="MsoNormal">6. Check have charging current to VBAT.</p> <p class="MsoNormal">7. Check 0x0F[3:0] shows ‘0100’ (Fast-charge)</p> <p class="MsoNormal">8. Start the test by changing register setting which you want. </p>

5. Detailed Description of Hardware

<h3>Headers Description and Placement</h3> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image001_en.png"><img width="491" height="489" id="圖片 8" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image001_en.png" alt="一張含有 文字, 電路, 螢幕擷取畫面, 電子工程 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:1.0cm"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;background: #009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="23CxSpFirst">Test Point/</p> <p class="23CxSpMiddle">Pin Name</p> </td> <td width="85%" style="width:85.36%;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="23CxSpLast">Function</p> </td> </tr> </thead> <tr style="height:17.0pt"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">VBUS</p> </td> <td width="85%" style="width:85.36%;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">Input voltage.</p> </td> </tr> <tr style="height:17.0pt"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">SYS</p> </td> <td width="85%" style="width:85.36%;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">System voltage.</p> </td> </tr> <tr style="height:17.0pt"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">BAT</p> </td> <td width="85%" style="width:85.36%;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">Battery voltage.</p> </td> </tr> <tr style="height:17.0pt"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">SW</p> </td> <td width="85%" style="width:85.36%;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">Switching node.</p> </td> </tr> <tr style="height:17.0pt"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">REGN</p> </td> <td width="85%" style="width:85.36%;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">Internal LDO.</p> </td> </tr> <tr style="height:17.0pt"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">PMID</p> </td> <td width="85%" style="width:85.36%;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">PMID from VBUS.</p> </td> </tr> <tr style="height:17.0pt"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">BTST</p> </td> <td width="85%" style="width:85.36%;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">Boost strap pin.</p> </td> </tr> <tr style="height:17.0pt"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">INT</p> </td> <td width="85%" style="width:85.36%;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">Interupt pin.</p> </td> </tr> <tr style="height:17.0pt"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">SDA</p> </td> <td width="85%" style="width:85.36%;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 SDA.</p> </td> </tr> <tr style="height:17.0pt"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">SCL</p> </td> <td width="85%" style="width:85.36%;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 SCL.</p> </td> </tr> <tr style="height:17.0pt"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">/QON</p> </td> <td width="85%" style="width:85.36%;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">Power key.</p> </td> </tr> <tr style="height:17.0pt"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">VAC</p> </td> <td width="85%" style="width:85.36%;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">Input sense.</p> </td> </tr> <tr style="height:17.0pt"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">/CE</p> </td> <td width="85%" style="width:85.36%;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">Charger enable or disable. </p> </td> </tr> <tr style="height:17.0pt"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">D+</p> </td> <td width="85%" style="width:85.36%;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">Positive of USB data line.</p> </td> </tr> <tr style="height:17.0pt"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">D-</p> </td> <td width="85%" style="width:85.36%;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">Negative of USB data line.</p> </td> </tr> <tr style="height:17.0pt"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">TS</p> </td> <td width="85%" style="width:85.36%;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">Temperature sense voltage.</p> </td> </tr> </table>

7. Bill of Materials

<div> <table class="TableNormal" border="1" cellspacing="0" cellpadding="0" width="679" style="border-collapse:collapse;border:none"> <thead> <tr style="height:17.0pt"> <td width="74" style="width:55.8pt;border:solid #009EB8 1.0pt;background:#009EB8; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="TableParagraph">Reference</p> </td> <td width="41" style="width:30.85pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="TableParagraph">Count</p> </td> <td width="174" style="width:130.8pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="TableParagraph">Part Number</p> </td> <td width="191" style="width:143.45pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="TableParagraph">Description</p> </td> <td width="105" style="width:78.4pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="TableParagraph">Package</p> </td> <td width="93" style="width:69.75pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="TableParagraph">Vendor</p> </td> </tr> </thead> <tr style="height:17.0pt"> <td width="74" style="width:55.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">C1</p> </td> <td width="41" style="width:30.85pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">1</p> </td> <td width="174" style="width:130.8pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">GRM155R61E105KA12</p> </td> <td width="191" style="width:143.45pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">1µF/25V/X5R/0402</p> </td> <td width="105" style="width:78.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">0402</p> </td> <td width="93" style="width:69.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">Murata</p> </td> </tr> <tr style="height:17.0pt"> <td width="74" style="width:55.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">C3</p> </td> <td width="41" style="width:30.85pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">1</p> </td> <td width="174" style="width:130.8pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">GRM155R60J475ME47</p> </td> <td width="191" style="width:143.45pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">4.7µF/6.3V/X5R/0402</p> </td> <td width="105" style="width:78.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">0402</p> </td> <td width="93" style="width:69.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">Murata</p> </td> </tr> <tr style="height:17.0pt"> <td width="74" style="width:55.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">C4</p> </td> <td width="41" style="width:30.85pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">1</p> </td> <td width="174" style="width:130.8pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">GRM033R61C473KE84</p> </td> <td width="191" style="width:143.45pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">47nF/16V/X5R/0201</p> </td> <td width="105" style="width:78.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">0201</p> </td> <td width="93" style="width:69.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">Murata</p> </td> </tr> <tr style="height:17.0pt"> <td width="74" style="width:55.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">C5, C6, C7</p> </td> <td width="41" style="width:30.85pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">2</p> </td> <td width="174" style="width:130.8pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">GRM185R60J106ME15</p> </td> <td width="191" style="width:143.45pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">10µF/6.3V/X5R/0603</p> </td> <td width="105" style="width:78.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">0603</p> </td> <td width="93" style="width:69.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">Murata</p> </td> </tr> <tr style="height:17.0pt"> <td width="74" style="width:55.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">C10</p> </td> <td width="41" style="width:30.85pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">1</p> </td> <td width="174" style="width:130.8pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">GRM188R61E106MA73</p> </td> <td width="191" style="width:143.45pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">10µF/25V/X5R/0603</p> </td> <td width="105" style="width:78.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">0603</p> </td> <td width="93" style="width:69.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">Murata</p> </td> </tr> <tr style="height:1.0cm"> <td width="74" style="width:55.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">J102</p> </td> <td width="41" style="width:30.85pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">1</p> </td> <td width="174" style="width:130.8pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">HSEC8-110-01-S-DV-A-TR</p> </td> <td width="191" style="width:143.45pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">CONN EDGE DUAL FMALE 20POS 0.8mm </p> </td> <td width="105" style="width:78.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">12.6x7.98mm</p> </td> <td width="93" style="width:69.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">SAMTEC</p> </td> </tr> <tr style="height:17.0pt"> <td width="74" style="width:55.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">L1</p> </td> <td width="41" style="width:30.85pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">1</p> </td> <td width="174" style="width:130.8pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">CIGT252010EH1R0MNE</p> </td> <td width="191" style="width:143.45pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">1µH</p> </td> <td width="105" style="width:78.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">L-2-5x2-0</p> </td> <td width="93" style="width:69.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">Samsung</p> </td> </tr> <tr style="height:1.0cm"> <td width="74" style="width:55.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">LED1, LED2</p> </td> <td width="41" style="width:30.85pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">2</p> </td> <td width="174" style="width:130.8pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">LNL-302RD000A1</p> </td> <td width="191" style="width:143.45pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">LED_RED-DIP</p> </td> <td width="105" style="width:78.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">LED-3-85MMDIP</p> </td> <td width="93" style="width:69.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">LighTop</p> </td> </tr> <tr style="height:17.0pt"> <td width="74" style="width:55.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">PD1</p> </td> <td width="41" style="width:30.85pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">1</p> </td> <td width="174" style="width:130.8pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">121U-3CST-09CR</p> </td> <td width="191" style="width:143.45pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">USB TYPE-C 3.1</p> </td> <td width="105" style="width:78.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">9.87x9.75mm</p> </td> <td width="93" style="width:69.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">JEM</p> </td> </tr> <tr style="height:1.0cm"> <td width="74" style="width:55.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">POWER</p> <p class="MsoNormal">ON</p> </td> <td width="41" style="width:30.85pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">1</p> </td> <td width="174" style="width:130.8pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">HTS6601H</p> </td> <td width="191" style="width:143.45pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">SW-TACT-SWITCH</p> </td> <td width="105" style="width:78.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">TACT-BTN</p> </td> <td width="93" style="width:69.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">High-Tronics</p> </td> </tr> <tr style="height:1.0cm"> <td width="74" style="width:55.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">R3, R6,</p> <p class="MsoNormal">R11, R12</p> </td> <td width="41" style="width:30.85pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">4</p> </td> <td width="174" style="width:130.8pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">WR06X1002FTL</p> </td> <td width="191" style="width:143.45pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">10k/0603</p> </td> <td width="105" style="width:78.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">0603</p> </td> <td width="93" style="width:69.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">WALSIN</p> </td> </tr> <tr style="height:17.0pt"> <td width="74" style="width:55.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">R8</p> </td> <td width="41" style="width:30.85pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">1</p> </td> <td width="174" style="width:130.8pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">WR06X4701FTL</p> </td> <td width="191" style="width:143.45pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">4.7k/0603</p> </td> <td width="105" style="width:78.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">0603</p> </td> <td width="93" style="width:69.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">WALSIN</p> </td> </tr> <tr style="height:17.0pt"> <td width="74" style="width:55.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">R9</p> </td> <td width="41" style="width:30.85pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">1</p> </td> <td width="174" style="width:130.8pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">WR06X5231FTL</p> </td> <td width="191" style="width:143.45pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">5.23k/0603</p> </td> <td width="105" style="width:78.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">0603</p> </td> <td width="93" style="width:69.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">WALSIN</p> </td> </tr> <tr style="height:17.0pt"> <td width="74" style="width:55.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">R10</p> </td> <td width="41" style="width:30.85pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">1</p> </td> <td width="174" style="width:130.8pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">WR06X3012FTL</p> </td> <td width="191" style="width:143.45pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">30.1k/0603</p> </td> <td width="105" style="width:78.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">0603</p> </td> <td width="93" style="width:69.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">WALSIN</p> </td> </tr> <tr style="height:17.0pt"> <td width="74" style="width:55.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">R21, R22</p> </td> <td width="41" style="width:30.85pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">2</p> </td> <td width="174" style="width:130.8pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">WR06X2001FTL</p> </td> <td width="191" style="width:143.45pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">2k/0603</p> </td> <td width="105" style="width:78.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">0603</p> </td> <td width="93" style="width:69.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">WALSIN</p> </td> </tr> <tr style="height:17.0pt"> <td width="74" style="width:55.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">U1</p> </td> <td width="41" style="width:30.85pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">1</p> </td> <td width="174" style="width:130.8pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">RT9471DGQW(2)</p> </td> <td width="191" style="width:143.45pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">RT9471DGQW(2)</p> </td> <td width="105" style="width:78.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">WQFN-24L 4x4</p> </td> <td width="93" style="width:69.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">RichTek</p> </td> </tr> <tr style="height:1.0cm"> <td width="74" style="width:55.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">USB2</p> </td> <td width="41" style="width:30.85pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">1</p> </td> <td width="174" style="width:130.8pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">UMMBF-051MGCB2-CF1066</p> </td> <td width="191" style="width:143.45pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">MICRO USB AB TYPE, SMT</p> </td> <td width="105" style="width:78.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">7.4x5.63mm</p> </td> <td width="93" style="width:69.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">Cherng Weei</p> </td> </tr> </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_rt9471dgqw(2)/html-images/image002_en.png"><img border="0" width="684" height="450" id="Picture 4" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image002_en.png" alt="Technical Document Image Preview" /></a></p> <p class="MsoNormal">1. The capacitance values of the input and output capacitors will influence the input and output voltage ripple and stability. </p> <p class="MsoNormal">2. MLCC capacitors have degrading capacitance at DC bias voltage, and especially smaller size MLCC capacitors will have much lower capacitance. </p>

9. Measure Result

<table class="MsoNormalTable" border="1" cellspacing="0" cellpadding="0" style="margin-left:26.35pt;border-collapse:collapse;border:none"> <tr> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;background: #009EB8;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal"> Power –Up with VBUS Plug In</p> </td> <td width="307" style="width:230.35pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">Charge Enable </p> </td> </tr> <tr style="height:168.2pt"> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:168.2pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image003_en.jpg"><img border="0" width="293" height="222" id="圖片 22" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image003_en.jpg" alt="Technical Document Image Preview" /></a></p> </td> <td width="307" style="width:230.35pt;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:168.2pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image004_en.jpg"><img border="0" width="292" height="217" id="圖片 24" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image004_en.jpg" alt="Technical Document Image Preview" /></a></p> </td> </tr> <tr> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">Charge Disable </p> </td> <td width="307" style="width:230.35pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">Boost Start-Up</p> </td> </tr> <tr style="height:172.95pt"> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:172.95pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image005_en.jpg"><img border="0" width="293" height="220" id="圖片 25" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image005_en.jpg" alt="Technical Document Image Preview" /></a></p> </td> <td width="307" style="width:230.35pt;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:172.95pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image006_en.jpg"><img border="0" width="303" height="223" id="圖片 26" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image006_en.jpg" alt="Technical Document Image Preview" /></a></p> </td> </tr> <tr> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">AICC Enable</p> </td> <td width="307" style="width:230.35pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">Charger Efficiency, VBAT = 3.8V</p> </td> </tr> <tr> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 1.4pt 0cm 1.4pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image007_en.jpg"><img border="0" width="303" height="212" id="圖片 27" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image007_en.jpg" alt="Technical Document Image Preview" /></a></p> </td> <td width="307" style="width:230.35pt;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"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image008_en.jpg"><img border="0" width="303" height="257" id="圖片 28" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image008_en.jpg" alt="Technical Document Image Preview" /></a></p> </td> </tr> <tr> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">Charger Efficiency, VBAT = 4.2V</p> </td> <td width="307" style="width:230.35pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">Boost Efficiency</p> </td> </tr> <tr style="height:184.2pt"> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 1.4pt 0cm 1.4pt;height:184.2pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image009_en.jpg"><img border="0" width="303" height="252" id="圖片 29" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image009_en.jpg" alt="Technical Document Image Preview" /></a></p> </td> <td width="307" style="width:230.35pt;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:184.2pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image010_en.jpg"><img border="0" width="292" height="240" id="圖片 31" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image010_en.jpg" alt="Technical Document Image Preview" /></a></p> </td> </tr> </table>

10. Evaluation Board Layout

<p class="MsoNormal">Figure 1 to Figure 4 are RT9471D Evaluation Board layout.</p> <p class="23CxSpFirst"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image011_en.jpg"><img border="0" width="529" height="522" id="圖片 1" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image011_en.jpg" alt="一張含有 文字, 圖表, 地圖, 方案 的圖片 自動產生的描述" /></a></p> <p class="23CxSpLast">Figure 1. Top View (1^st layer)</p> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image012_en.jpg"><img border="0" width="529" height="530" id="圖片 3" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image012_en.jpg" alt="一張含有 文字, 螢幕擷取畫面, Rectangle, 數字 的圖片 自動產生的描述" /></a></p> <p class="10">Figure 2. PCB Layout—Inner Side (2^nd Layer)</p> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image013_en.jpg"><img border="0" width="529" height="530" id="圖片 4" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image013_en.jpg" alt="一張含有 地圖, 圖表, 螢幕擷取畫面, 方案 的圖片 自動產生的描述" /></a></p> <p class="10">Figure 3. PCB Layout—Inner Side (3^rd Layer)</p> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image014_en.jpg"><img border="0" width="529" height="529" id="圖片 6" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9471dgqw(2)/html-images/image014_en.jpg" alt="一張含有 文字, 螢幕擷取畫面, 數字, Rectangle 的圖片 自動產生的描述" /></a></p> <p class="10">Figure 4. Bottom View (4^th Layer)</p>