overview

1. Purpose

<p class="MsoNormal">The RT5710A is a high efficiency synchronous step-down DC-DC converter. Its input voltage range is from 2.5V to 6V and provides an adjustable regulated output voltage from 0.6V to 3.4V while delivering up to 1A of output current. This document explains the function and use of the RT5710A evaluation board (EVB), and provides information to enable operation, modification of the evaluation board and circuit to suit individual requirements.</p>

2. Introduction

<h3>General Product Information</h3> <p class="bady">The RT5710A is a high efficiency synchronous step-down DC-DC converter. Its input voltage range is from 2.5V to 6V and provides an adjustable regulated output voltage from 0.6V to 3.4V while delivering up to 1A of output current. The internal synchronous low on-resistance power switches increase efficiency and eliminate the need for an external Schottky diode. The Current Mode Constant-On-time (CMCOT) operation with internal compensation allows the transient response to be optimized over a wide range of loads and output capacitors.</p> <h3>Product Feature</h3> <ul> <li>Efficiency Up to 95% </li> <li>R_DSON 160mΩ HS / 110mΩ LS </li> <li>V_IN Range 2.5V to 6V </li> <li>V_REF 0.6V with ±2% Accuracy </li> <li>CMCOT^TM Control Loop Design for Best Transient Response, Robust Loop Stability with Low-ESR (MLCC) C_OUT </li> <li>Fixed Soft-Start 1.2ms </li> <li>Cycle-by-Cycle Over-Current Protection </li> <li>Input Under-Voltage Lockout </li> <li>Output Under-Voltage Protection (UVP Hiccup) </li> <li>Thermal Shutdown Protection </li> <li>Power Saving at Light Load</li> </ul>

3. Key Performance Summary Table

<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 : PCB104_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">3.3V</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">1A</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">1.2V</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">RT5710AHGQW, WDFN-6L 2x2</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">1.5MHz in CCM mode</p> </td> </tr> </table>

4. Bench Test Setup Conditions

<h3>Headers Description and Placement</h3> <p class="2"><a name="_Toc409666842"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image001_en.png"><img width="491" height="355" id="圖片 4" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image001_en.png" alt="Technical Document Image Preview" /></a></a></p> <p class="2">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>

5. 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:5.4pt;border-collapse:collapse; border:none"> <tr style="height:17.0pt"> <td width="13%" style="width:13.18%;border:solid #009EB8 1.0pt;background: #009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="23CxSpFirst">Test point/</p> <p class="23CxSpMiddle">Pin name</p> </td> <td width="23%" style="width:23.04%;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="23CxSpMiddle">Signal</p> </td> <td width="63%" style="width:63.78%;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="23CxSpLast">Comment (expected waveforms or voltage levels on test points)</p> </td> </tr> <tr style="height:17.0pt"> <td width="13%" style="width:13.18%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">NC, IC</p> </td> <td width="23%" style="width:23.04%;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">No Internal Connection</p> </td> <td width="63%" style="width:63.78%;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">No internal connection.</p> </td> </tr> <tr style="height:17.0pt"> <td width="13%" style="width:13.18%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1">EN</p> </td> <td width="23%" style="width:23.04%;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</p> </td> <td width="63%" style="width:63.78%;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.</p> </td> </tr> <tr style="height:17.0pt"> <td width="13%" style="width:13.18%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">VIN</p> </td> <td width="23%" style="width:23.04%;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">Supply Voltage Input</p> </td> <td width="63%" style="width:63.78%;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">The RT5710A operates from a 2.5V to 6V input.</p> </td> </tr> <tr style="height:17.0pt"> <td width="13%" style="width:13.18%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1">LX</p> </td> <td width="23%" style="width:23.04%;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">Switch Node</p> </td> <td width="63%" style="width:63.78%;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">Switch node.</p> </td> </tr> <tr style="height:1.0cm"> <td width="13%" style="width:13.18%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="ListParagraph1">GND</p> </td> <td width="23%" style="width:23.04%;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</p> </td> <td width="63%" style="width:63.78%;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:17.0pt"> <td width="13%" style="width:13.18%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1">FB</p> </td> <td width="23%" style="width:23.04%;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">Feedback</p> </td> <td width="63%" style="width:63.78%;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">Feedback.</p> </td> </tr> <tr style="height:17.0pt"> <td width="13%" style="width:13.18%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1">VOUT</p> </td> <td width="23%" style="width:23.04%;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">Output Voltage</p> </td> <td width="63%" style="width:63.78%;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">Output voltage.</p> </td> </tr> </table>

6. Power-up & Measurement Procedure

<p class="MsoListParagraph">1. Apply a 3.3V nominal input power supply (2.5V < V_IN < 6V) to the VIN and GND terminals.</p> <p class="MsoListParagraph">2. Set the jumper at JP1 to connect terminals 2 and 3, connecting EN to VIN through resistor R2 (100kΩ). The Enable pin can connected to VIN directly as well to enable operation.</p> <p class="MsoListParagraph">3. Verify the output voltage (approximately 1.2V) between VOUT and GND.</p> <p class="MsoListParagraph">4. Connect an external load up to 1A to the VOUT and GND terminals and verify the output voltage and current.</p>

7. Output Voltage Setting

<p class="MsoNormal">Set the output voltage with the resistive divider (R1, R3) between VOUT and GND with the midpoint connected to FB. The output is set by the following formula : </p> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image002_en.png"><img width="134" height="48" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image002_en.png" alt="Technical Document Image Preview" /></a></p> <p class="MsoNormal">The placement of the resistive divider should be within 5mm of the FB pin. The resistance of R3 is suggested between 10kΩ and 150kΩ to minimize power consumption, and noise pick-up at the FB pin. The resistance of R1 can then be obtained as below :</p> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image003_en.png"><img width="138" height="48" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image003_en.png" alt="Technical Document Image Preview" /></a></p> <p class="MsoNormal">For better output voltage accuracy, divider resistors (R1 and R3) should have tolerance of ±1% tolerance or better.</p>

8. Schematic, Bill of Materials & Board Layout

<h3>EVB Schematic Diagram</h3> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image004_en.png"><img border="0" width="680" height="233" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image004_en.png" alt="Technical Document Image Preview" /></a></p> <p class="MsoNormal">Note : </p> <p class="MsoListParagraph">1. Do not hot-plug a live 3.3V supply to the board; if hot-plugging is required, add ~100µF electrolytic capacitor at the input.</p> <p class="MsoNormal">A small feedforward capacitor (C4) can be introduced into the feedback network to speed up the transient response of high output voltage circuits. Adding C4 can also improve the light load PSM switching behavior. The feedforward capacitor is added across the upper FB divider. </p> <p class="MsoNormal">To optimize transient response, C4value is chosen so that the gain and phase boost of the feedback network increases the bandwidth of the converter, while still maintaining an acceptable phase margin. Generally, larger C4values provide higher bandwidth, but may result in an unacceptable phase margin or instability.</p>

9. Measurement Results

<table class="MsoNormalTable" border="1" cellspacing="0" cellpadding="0" style="margin-left:4.0pt;border-collapse:collapse;border:none"> <tr style="height:1.0cm"> <td width="341" valign="top" style="width:255.85pt;border:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="MsoNormal">Output ripple measurement, 10mA load</p> <p class="MsoNormal">Blue : V_OUT ; Cyan : V-LX</p> </td> <td width="341" valign="top" style="width:255.85pt;border:solid windowtext 1.0pt; border-left:none;padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="MsoNormal">Output ripple measurement, 1A load</p> <p class="MsoNormal">Blue : V_OUT ; Cyan : V-LX</p> </td> </tr> <tr> <td width="341" valign="top" style="width:255.85pt;border:solid windowtext 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image005_en.jpg"><img border="0" width="302" height="226" id="圖片 30" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image005_en.jpg" alt="TEK00068" /></a></p> </td> <td width="341" valign="top" style="width:255.85pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">^{<a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image006_en.jpg"><img border="0" width="302" height="226" id="圖片 29" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image006_en.jpg" alt="TEK00069" /></a>}</p> </td> </tr> <tr> <td width="341" valign="top" style="width:255.85pt;border:solid windowtext 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">Output ripple : 24mVpp</p> </td> <td width="341" valign="top" style="width:255.85pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">Output ripple : 5.6mVpp, Frequency : 1.519MHz</p> </td> </tr> </table> <table class="MsoNormalTable" border="1" cellspacing="0" cellpadding="0" style="margin-left:4.0pt;border-collapse:collapse;border:none"> <tr> <td width="341" valign="top" style="width:255.85pt;border:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">Dynamic load 30mA to 800mA </p> <p class="MsoNormal">Blue : V_OUT; Green : Load current step</p> </td> <td width="341" valign="top" style="width:255.85pt;border:solid windowtext 1.0pt; border-left:none;padding:0cm 5.4pt 0cm 5.4pt"> <p class="Default">Dynamic load 300mA to 800mA </p> <p class="MsoNormal">Blue: V_OUT; Green : Load current step</p> </td> </tr> <tr> <td width="341" valign="top" style="width:255.85pt;border:solid windowtext 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image007_en.jpg"><img border="0" width="302" height="226" id="圖片 28" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image007_en.jpg" alt="TEK00070" /></a></p> </td> <td width="341" valign="top" style="width:255.85pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image008_en.jpg"><img border="0" width="302" height="226" id="圖片 27" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image008_en.jpg" alt="TEK00071" /></a></p> </td> </tr> <tr> <td width="341" valign="top" style="width:255.85pt;border:solid windowtext 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">Overshoot : 13mV, undershoot : 30mV</p> </td> <td width="341" valign="top" style="width:255.85pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">Overshoot : 13mV, undershoot : 15mV</p> </td> </tr> </table> <table class="MsoNormalTable" border="1" cellspacing="0" cellpadding="0" style="margin-left:4.0pt;border-collapse:collapse;border:none"> <tr> <td width="341" valign="top" style="width:255.85pt;border:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">OCP measurement : Dynamic load close to OCP</p> <p class="MsoNormal">Yellow : V_OUT; Blue : Load current step</p> </td> <td width="341" valign="top" style="width:255.85pt;border:solid windowtext 1.0pt; border-left:none;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">OCP measurement : Gradually increase load </p> <p class="MsoNormal">Yellow : V_OUT; Blue : I_OUT</p> </td> </tr> <tr> <td width="341" valign="top" style="width:255.85pt;border:solid windowtext 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_rt5710ahgqw/html-images/image009_en.jpg"><img border="0" width="337" height="225" id="圖片 2" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image009_en.jpg" alt="Technical Document Image Preview" /></a></p> </td> <td width="341" valign="top" style="width:255.85pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; padding:0cm 1.4pt 0cm 1.4pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image010_en.jpg"><img border="0" width="337" height="225" id="圖片 3" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image010_en.jpg" alt="Technical Document Image Preview" /></a></p> </td> </tr> <tr> <td width="341" valign="top" style="width:255.85pt;border:solid windowtext 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">V-out starts to drop at 1.78A load current</p> </td> <td width="341" valign="top" style="width:255.85pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">Auto recovery hiccup mode when OC limit is exceeded. </p> </td> </tr> </table> <table class="MsoNormalTable" border="1" cellspacing="0" cellpadding="0" style="margin-left:4.0pt;border-collapse:collapse;border:none"> <tr style="height:39.7pt"> <td width="341" valign="top" style="width:255.85pt;border:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:39.7pt"> <p class="MsoNormal">Start-up measurement from Enable : EN pin low – high</p> <p class="MsoNormal">Green : Enable; Yellow : V_OUT; Blue : I_OUT</p> </td> <td width="341" valign="top" style="width:255.85pt;border:solid windowtext 1.0pt; border-left:none;padding:0cm 5.4pt 0cm 5.4pt;height:39.7pt"> <p class="MsoNormal">Start-up measurement from VIN : </p> <p class="MsoNormal">Green : V_IN; Yellow : V_OUT; Blue : I_OUT</p> </td> </tr> <tr> <td width="341" valign="top" style="width:255.85pt;border:solid windowtext 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_rt5710ahgqw/html-images/image011_en.jpg"><img border="0" width="337" height="225" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image011_en.jpg" alt="Technical Document Image Preview" /></a></p> </td> <td width="341" valign="top" style="width:255.85pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; padding:0cm 1.4pt 0cm 1.4pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image012_en.jpg"><img border="0" width="326" height="218" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image012_en.jpg" alt="Technical Document Image Preview" /></a></p> </td> </tr> <tr style="height:17.0pt"> <td width="341" valign="top" style="width:255.85pt;border:solid windowtext 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="MsoNormal">Start-up time 1.3msec. Soft-start 1.2msec</p> </td> <td width="341" valign="top" style="width:255.85pt;border-top:none;border-left: none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="MsoNormal">V_IN > 2.22V initiates start-up</p> </td> </tr> </table>

10. Efficiency Measurements

<p class="MsoNormal">3.3V to 1.2V</p> <table class="MsoNormalTable" border="1" cellspacing="0" cellpadding="0" width="680" style="width:510.2pt;margin-left:1.65pt;border-collapse:collapse;border:none"> <tr style="height:17.0pt"> <td width="136" nowrap style="width:102.0pt;border:solid #009EB8 1.0pt; background:#009EB8;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">V_IN (V)</p> </td> <td width="136" nowrap style="width:102.05pt;border:solid #009EB8 1.0pt; border-left:none;background:#009EB8;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">V_OUT (V)</p> </td> <td width="136" nowrap style="width:102.05pt;border:solid #009EB8 1.0pt; border-left:none;background:#009EB8;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">I_IN (A)</p> </td> <td width="136" nowrap style="width:102.05pt;border:solid #009EB8 1.0pt; border-left:none;background:#009EB8;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">I_OUT (A)</p> </td> <td width="136" nowrap style="width:102.05pt;border:solid #009EB8 1.0pt; border-left:none;background:#009EB8;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">Efficiency (%)</p> </td> </tr> <tr style="height:17.0pt"> <td width="136" nowrap style="width:102.0pt;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">3.299</p> </td> <td width="136" nowrap style="width:102.05pt;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">1.220</p> </td> <td width="136" nowrap style="width:102.05pt;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">0.0005141</p> </td> <td width="136" nowrap style="width:102.05pt;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">0.001</p> </td> <td width="136" nowrap style="width:102.05pt;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">71.93</p> </td> </tr> <tr style="height:17.0pt"> <td width="136" nowrap style="width:102.0pt;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">3.299</p> </td> <td width="136" nowrap style="width:102.05pt;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">1.220</p> </td> <td width="136" nowrap style="width:102.05pt;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">0.00433738</p> </td> <td width="136" nowrap style="width:102.05pt;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">0.01</p> </td> <td width="136" nowrap style="width:102.05pt;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">85.26</p> </td> </tr> <tr style="height:17.0pt"> <td width="136" nowrap style="width:102.0pt;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">3.299</p> </td> <td width="136" nowrap style="width:102.05pt;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">1.215</p> </td> <td width="136" nowrap style="width:102.05pt;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">0.04215278</p> </td> <td width="136" nowrap style="width:102.05pt;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">0.1</p> </td> <td width="136" nowrap style="width:102.05pt;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">87.37</p> </td> </tr> <tr style="height:17.0pt"> <td width="136" nowrap style="width:102.0pt;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">3.299</p> </td> <td width="136" nowrap style="width:102.05pt;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">1.203</p> </td> <td width="136" nowrap style="width:102.05pt;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">0.12214476</p> </td> <td width="136" nowrap style="width:102.05pt;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">0.3</p> </td> <td width="136" nowrap style="width:102.05pt;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">89.56</p> </td> </tr> <tr style="height:17.0pt"> <td width="136" nowrap style="width:102.0pt;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">3.299</p> </td> <td width="136" nowrap style="width:102.05pt;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">1.203</p> </td> <td width="136" nowrap style="width:102.05pt;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">0.20562464</p> </td> <td width="136" nowrap style="width:102.05pt;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">0.5</p> </td> <td width="136" nowrap style="width:102.05pt;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">88.67</p> </td> </tr> <tr style="height:17.0pt"> <td width="136" nowrap style="width:102.0pt;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">3.299</p> </td> <td width="136" nowrap style="width:102.05pt;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">1.203</p> </td> <td width="136" nowrap style="width:102.05pt;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">0.33956308</p> </td> <td width="136" nowrap style="width:102.05pt;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">0.8</p> </td> <td width="136" nowrap style="width:102.05pt;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">85.91</p> </td> </tr> <tr style="height:17.0pt"> <td width="136" nowrap style="width:102.0pt;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">3.300</p> </td> <td width="136" nowrap style="width:102.05pt;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">1.202</p> </td> <td width="136" nowrap style="width:102.05pt;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">0.43489106</p> </td> <td width="136" nowrap style="width:102.05pt;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="136" nowrap style="width:102.05pt;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">83.75</p> </td> </tr> </table> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image013_en.png"><img border="0" width="480" height="411" id="圖片 5" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image013_en.png" alt="Technical Document Image Preview" /></a></p>

11. Bill of Materials

<table class="MsoTableLightListAccent2" border="1" cellspacing="0" cellpadding="0" width="680" style="margin-left:5.4pt;border-collapse:collapse;border:none"> <thead> <tr style="height:17.0pt"> <td width="15%" style="width:15.92%;border:solid #009EB8 1.0pt;background: #009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="MsoNormal">Reference</p> </td> <td width="5%" style="width:5.2%;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="MsoNormal">Qty</p> </td> <td width="26%" style="width:26.08%;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="MsoNormal">Part Number</p> </td> <td width="22%" style="width:22.36%;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="MsoNormal">Description</p> </td> <td width="15%" style="width:15.66%;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="MsoNormal">Package</p> </td> <td width="14%" style="width:14.78%;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="MsoNormal">Manufacturer</p> </td> </tr> </thead> <tr style="height:17.0pt"> <td width="15%" style="width:15.92%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="MsoNormal">U1</p> </td> <td width="5%" style="width:5.2%;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">1</p> </td> <td width="26%" style="width:26.08%;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">RT5710AHGQW</p> </td> <td width="22%" style="width:22.36%;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="MsoNormal">DC-DC Converter</p> </td> <td width="15%" style="width:15.66%;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">WDFN-6L 2x2</p> </td> <td width="14%" style="width:14.78%;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">Richtek</p> </td> </tr> <tr style="height:17.0pt"> <td width="15%" style="width:15.92%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="MsoNormal">C1, C7</p> </td> <td width="5%" style="width:5.2%;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">2</p> </td> <td width="26%" style="width:26.08%;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 width="22%" style="width:22.36%;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="MsoNormal">NC</p> </td> <td width="15%" style="width:15.66%;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">C-1206</p> </td> <td width="14%" style="width:14.78%;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> </tr> <tr style="height:17.0pt"> <td width="15%" style="width:15.92%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="MsoNormal">C2, C6</p> </td> <td width="5%" style="width:5.2%;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">2</p> </td> <td width="26%" style="width:26.08%;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">GRM31CR71E106KA12L</p> </td> <td width="22%" style="width:22.36%;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="MsoNormal">10uF/25V/X7R/1206</p> </td> <td width="15%" style="width:15.66%;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">C-1206</p> </td> <td width="14%" style="width:14.78%;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">MURATA</p> </td> </tr> <tr style="height:17.0pt"> <td width="15%" style="width:15.92%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="MsoNormal">C3</p> </td> <td width="5%" style="width:5.2%;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">1</p> </td> <td width="26%" style="width:26.08%;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">C1608X7R1H104K080AA</p> </td> <td width="22%" style="width:22.36%;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="MsoNormal">100nF/50V/X7R/0603</p> </td> <td width="15%" style="width:15.66%;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">C-0603</p> </td> <td width="14%" style="width:14.78%;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">TDK</p> </td> </tr> <tr style="height:1.0cm"> <td width="15%" style="width:15.92%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="MsoNormal">C4, C5</p> </td> <td width="5%" style="width:5.2%;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">1</p> </td> <td width="26%" style="width:26.08%;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"> </td> <td width="22%" style="width:22.36%;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:1.0cm"> <p class="MsoNormal">NC</p> </td> <td width="15%" style="width:15.66%;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">C-0603</p> </td> <td width="14%" style="width:14.78%;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"> </td> </tr> <tr style="height:1.0cm"> <td width="15%" style="width:15.92%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="MsoNormal">L1</p> </td> <td width="5%" style="width:5.2%;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">1</p> </td> <td width="26%" style="width:26.08%;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">74404042015</p> </td> <td width="22%" nowrap style="width:22.36%;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:1.0cm"> <p class="MsoNormal">1.5µH</p> </td> <td width="15%" style="width:15.66%;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">4.0x4.0x1.8mm</p> </td> <td width="14%" style="width:14.78%;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">WURTH ELEKTRONIK</p> </td> </tr> <tr style="height:17.0pt"> <td width="15%" style="width:15.92%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="MsoNormal">R1, R2, R3</p> </td> <td width="5%" style="width:5.2%;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">3</p> </td> <td width="26%" style="width:26.08%;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 width="22%" nowrap style="width:22.36%;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="MsoNormal">100k/0603</p> </td> <td width="15%" style="width:15.66%;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">R-0603</p> </td> <td width="14%" style="width:14.78%;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> </tr> <tr style="height:17.0pt"> <td width="15%" style="width:15.92%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="MsoNormal">R4</p> </td> <td width="5%" style="width:5.2%;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">1</p> </td> <td width="26%" style="width:26.08%;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 width="22%" nowrap style="width:22.36%;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="MsoNormal">NC</p> </td> <td width="15%" style="width:15.66%;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">R-0603</p> </td> <td width="14%" style="width:14.78%;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> </tr> </table>

12. PCB Layout

<p class="23CxSpFirst"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image014_en.jpg"><img border="0" width="491" height="356" id="圖片 1" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image014_en.jpg" alt="Technical Document Image Preview" /></a></p> <p class="23CxSpLast">Top View (1^st layer)</p> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image015_en.jpg"><img border="0" width="492" height="356" id="圖片 8" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image015_en.jpg" alt="Technical Document Image Preview" /></a></p> <p class="10">PCB Layout—Inner Side (2^nd Layer)</p> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image016_en.jpg"><img border="0" width="491" height="356" id="圖片 9" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image016_en.jpg" alt="Technical Document Image Preview" /></a></p> <p class="10">PCB Layout—Inner Side (3^rd Layer)</p> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image017_en.jpg"><img border="0" width="492" height="356" id="圖片 10" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt5710ahgqw/html-images/image017_en.jpg" alt="Technical Document Image Preview" /></a></p> <p class="10">Bottom View (4^th Layer)</p>