overview

1. General Description

<p class="bady">The RT4533 is a highly integrated LED driver IC capable of driving 10 WLEDs in series. It is composed of a current mode Boost converter integrated with a 36.5V/1.2A power switch. The RT4533 supports a wide input voltage range from 2.5V to 5.5V, and runs at a fixed frequency of 1.1MHz. The LED current is set via an external resistor and the feedback voltage is regulated to 200mV. For brightness dimming, the RT4533 supports PWM dimming which determines the feedback reference voltage.</p>

2. Performance Sepcification Summary

<p class="bady">Summary of the RT4533GJ6 Evaluation Board performance specificiaiton is provided in Table 1. The ambient temperature is 25°C.</p> <p class="MsoNormal">Table 1. RT4533 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 style="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="259" style="width:194.4pt;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 width="52" style="width:38.65pt;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 width="52" style="width:38.65pt;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 width="52" style="width:38.65pt;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 width="53" style="width:40.1pt;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 style="border:solid #009EB8 1.0pt;border-top:none;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> <p class="ListParagraph1CxSpFirst">Input Voltage Range</p> </td> <td width="259" style="width:194.4pt;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="52" style="width:38.65pt;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">2.5</p> </td> <td width="52" style="width:38.65pt;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 width="52" style="width:38.65pt;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">5.5</p> </td> <td width="53" style="width:40.1pt;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 style="border:solid #009EB8 1.0pt;border-top:none;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> <p class="ListParagraph1CxSpFirst">Output Current</p> </td> <td width="259" style="width:194.4pt;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="52" style="width:38.65pt;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 width="52" style="width:38.65pt;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 width="52" style="width:38.65pt;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">20</p> </td> <td width="53" style="width:40.1pt;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">mA</p> </td> </tr> <tr style="height:17.0pt"> <td style="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="259" style="width:194.4pt;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="52" style="width:38.65pt;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 width="52" style="width:38.65pt;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">36.5</p> </td> <td width="52" style="width:38.65pt;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 width="53" style="width:40.1pt;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 style="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="259" style="width:194.4pt;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="52" style="width:38.65pt;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 width="52" style="width:38.65pt;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">1.1</p> </td> <td width="52" style="width:38.65pt;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 width="53" style="width:40.1pt;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">MHz</p> </td> </tr> </table> </div>

3. Power-up Procedure

<h3>Suggestion Required Equipments</h3> <ul> <li>RT45336GJ6 Evaluation Board </li> <li>DC power supply capable of at least 6V and 2A</li> <li>Function Generator</li> <li>Oscilloscope</li> </ul>

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

<p class="MsoListParagraph">1. Apply 3.6V nominal input power supply (2.5V < V_IN < 5.5V) to the VIN and GND terminals.</p> <p class="MsoListParagraph">2. The EN voltage is pulled to logic high by internal circuit to enable operation. Drive EN high (> 1.4V) to enable operation or low (< 0.4V) to disable operation. Pull EN pin to High pin that make EN voltage equal to VIN.</p> <p class="MsoListParagraph">3. There is a 3-pin header JP5 “EN” for enable control. To use a jumper at “H” option to tie EN test pin to input power VIN for enabling the device. Inversely, to use a jumper at “L” option to tie EN test pin and ground GND for disabling the device. The JP5 is also the PWM control pin.</p> <p class="MsoListParagraph">4. The I_LED setting supports PWM dimming as below.</p>

5. Output ILED Setting

<p class="MsoListParagraph">1. PWM Brightness Dimming</p> <p class="MsoNormal">The EN pin is used for the control input for both PWM dimming mode and digital dimming mode. Shutdown delay when the EN voltage is logic low for more than specific time, the driver will be shut down.</p> <p class="MsoListParagraph">2. OCP</p> <p class="MsoNormal">The driver provides cycle-by-cycle current limit function to control the current on power switch. The boost switch turns off when the inductor current reaches this current threshold and it remains off until the beginning of the next switching cycle. This protects the RT4533 and external component under overload conditions.</p> <p class="MsoListParagraph">3. OVP</p> <p class="MsoNormal">The Over Voltage Protection is detected by a resistor divider circuit from VOUT. Once VOUT goes over the OVP voltage, LX pin stops switching and the power N-MOSFET will be turned off. Then, the VOUT will be discharged by external resistor. OVP will be released until EN goes from Lo to Hi again.</p> <p class="MsoListParagraph">4. OTP</p> <p class="MsoNormal">As the die temperature is higher than 160°C, the chip also will enter protection mode. The power MOSFET will be turned off during protection mode to prevent abnormal operation. The device is released from shutdown automatically when the junction temperature decreases by 15°C.</p>

6. 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_rt4533gj6/html-images/image001_en.png"><img width="491" height="327" id="圖片 4" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4533gj6/html-images/image001_en.png" alt="一張含有 電路, 電子工程, 電子產品, 文字 的圖片 自動產生的描述" /></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>

7. Test Points

<p class="MsoNormal">The EVB is provided with the test points and pin names listed in the table below.</p> <div> <table class="MsoTableLightListAccent2" border="1" cellspacing="0" cellpadding="0" width="680" style="width:510.2pt;border-collapse:collapse;border:none"> <tr style="height:1.0cm"> <td width="12%" style="width:12.5%;border:solid #009EB8 1.0pt;background: #009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="10CxSpFirst">Test Point/</p> <p class="10CxSpMiddle">Pin Name</p> </td> <td width="23%" style="width:23.62%;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="10CxSpMiddle">Signal Name</p> </td> <td width="63%" style="width:63.88%;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="10CxSpLast">Description</p> </td> </tr> <tr style="height:1.0cm"> <td width="12%" style="width:12.5%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="ListParagraph1CxSpFirst">LX</p> </td> <td width="23%" style="width:23.62%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="ListParagraph1CxSpLast">Switch Node</p> </td> <td width="63%" style="width:63.88%;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">This is the switching node of the IC. Connect the switched side of the inductor to LX. </p> </td> </tr> <tr style="height:17.0pt"> <td width="12%" style="width:12.5%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">GND</p> </td> <td width="23%" style="width:23.62%;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">Ground</p> </td> <td width="63%" style="width:63.88%;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">Ground.</p> </td> </tr> <tr style="height:17.0pt"> <td width="12%" style="width:12.5%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">FB</p> </td> <td width="23%" style="width:23.62%;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">Feedback Voltage Input</p> </td> <td width="63%" style="width:63.88%;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">Connect the sense resistor from FB to GND.</p> </td> </tr> <tr style="height:1.0cm"> <td width="12%" style="width:12.5%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="ListParagraph1CxSpFirst">EN</p> </td> <td width="23%" style="width:23.62%;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="ListParagraph1CxSpMiddle">Enable Control Input</p> </td> <td width="63%" style="width:63.88%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="ListParagraph1CxSpLast">Control pin of the boost converter. It is a multifunctional pin which can be used for enable control and PWM dimming.</p> </td> </tr> <tr style="height:1.0cm"> <td width="12%" style="width:12.5%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="ListParagraph1CxSpFirst">VOUT</p> </td> <td width="23%" style="width:23.62%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="ListParagraph1CxSpLast">Output Voltage</p> </td> <td width="63%" style="width:63.88%;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">The output supply pin for the IC. It is used to sense the output voltage for open LED protection.</p> </td> </tr> <tr style="height:17.0pt"> <td width="12%" style="width:12.5%;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="23%" style="width:23.62%;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:63.88%;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 input supply pin for the IC. Support 2.5V to 5.5V input voltage. </p> </td> </tr> </table> </div>

8. Bill of Materials

<div> <table class="TableNormal" border="1" cellspacing="0" cellpadding="0" width="680" style="width:510.2pt;border-collapse:collapse;border:none"> <tr style="height:17.0pt"> <td width="77" style="width:57.75pt;border:solid #009EB8 1.0pt;background:#009EB8; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="TableParagraph">Reference</p> </td> <td width="37" style="width:28.0pt;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="168" style="width:126.1pt;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="90" style="width:67.7pt;border:solid #009EB8 1.0pt;border-left:none; background:#009EB8;padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="TableParagraph">Value</p> </td> <td width="130" style="width:97.45pt;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="87" style="width:64.95pt;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="91" style="width:68.25pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="TableParagraph">Manufacturer</p> </td> </tr> <tr style="height:17.0pt"> <td width="77" style="width:57.75pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">U1</p> </td> <td width="37" style="width:28.0pt;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="168" style="width:126.1pt;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">RT4533GJ6</p> </td> <td width="90" style="width:67.7pt;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">RT4533GJ6</p> </td> <td width="130" style="width:97.45pt;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">DC-DC Converter</p> </td> <td width="87" style="width:64.95pt;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">TSOT-23-6</p> </td> <td width="91" style="width:68.25pt;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="77" style="width:57.75pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">L1</p> </td> <td width="37" style="width:28.0pt;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="168" style="width:126.1pt;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">NR4018T220M</p> </td> <td width="90" style="width:67.7pt;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">22µH</p> </td> <td width="130" style="width:97.45pt;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">Inductor</p> </td> <td width="87" style="width:64.95pt;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">L-SH4018</p> </td> <td width="91" style="width:68.25pt;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">TAIYO YUDEN</p> </td> </tr> <tr style="height:1.0cm"> <td width="77" style="width:57.75pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">C2</p> </td> <td width="37" style="width:28.0pt;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="168" style="width:126.1pt;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">GRM188R61C225KE15D</p> </td> <td width="90" style="width:67.7pt;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">2.2µF</p> </td> <td width="130" style="width:97.45pt;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">Capacitor Ceramic,</p> <p class="MsoNormal">16V/X5R</p> </td> <td width="87" style="width:64.95pt;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">C-0603</p> </td> <td width="91" style="width:68.25pt;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">MURATA</p> </td> </tr> <tr style="height:1.0cm"> <td width="77" style="width:57.75pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">C5</p> </td> <td width="37" style="width:28.0pt;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="168" style="width:126.1pt;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">UMK212ABJ105KD-T</p> </td> <td width="90" style="width:67.7pt;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">1µF</p> </td> <td width="130" style="width:97.45pt;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">Capacitor Ceramic, 50V/X5R</p> </td> <td width="87" style="width:64.95pt;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">C-0805</p> </td> <td width="91" style="width:68.25pt;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">TAIYO YUDEN</p> </td> </tr> <tr style="height:17.0pt"> <td width="77" style="width:57.75pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">D1</p> </td> <td width="37" style="width:28.0pt;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="168" style="width:126.1pt;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">SR26</p> </td> <td width="90" style="width:67.7pt;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"> </td> <td width="130" style="width:97.45pt;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">Schottky Diode</p> </td> <td width="87" style="width:64.95pt;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">D-1206</p> </td> <td width="91" style="width:68.25pt;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">PANJIT</p> </td> </tr> <tr style="height:17.0pt"> <td width="77" style="width:57.75pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">R6</p> </td> <td width="37" style="width:28.0pt;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="168" style="width:126.1pt;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">WR06X10R0FTL</p> </td> <td width="90" style="width:67.7pt;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">10</p> </td> <td width="130" style="width:97.45pt;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">Resistor, 1%</p> </td> <td width="87" style="width:64.95pt;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">R-0603</p> </td> <td width="91" style="width:68.25pt;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="77" style="width:57.75pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:17.0pt"> <p class="MsoNormal">D9, D13</p> </td> <td width="37" style="width:28.0pt;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="168" style="width:126.1pt;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">WR06X000 PTL</p> </td> <td width="90" style="width:67.7pt;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">0</p> </td> <td width="130" style="width:97.45pt;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">Resistor, Jumper</p> </td> <td width="87" style="width:64.95pt;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">R-0603</p> </td> <td width="91" style="width:68.25pt;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:51.0pt"> <td width="77" style="width:57.75pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:51.0pt"> <p class="MsoNormal">D2, D3, D4, D5, D6, D7, D8, D10, D11, D12</p> </td> <td width="37" style="width:28.0pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:51.0pt"> <p class="MsoNormal">10</p> </td> <td width="168" style="width:126.1pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:51.0pt"> <p class="MsoNormal">LNL-190UW-4H</p> </td> <td width="90" style="width:67.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:51.0pt"> </td> <td width="130" style="width:97.45pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:51.0pt"> <p class="MsoNormal">WLED</p> </td> <td width="87" style="width:64.95pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:51.0pt"> <p class="MsoNormal">D-0603</p> </td> <td width="91" style="width:68.25pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:51.0pt"> <p class="MsoNormal">LighTop</p> </td> </tr> </table> </div>

9. Typical Applications

<h3>EVB Schematic Diagram</h3> <p class="21"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4533gj6/html-images/image002_en.png"><img border="0" width="681" height="291" id="Picture 3" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4533gj6/html-images/image002_en.png" alt="Technical Document Image Preview" /></a></p>

10. 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-On from EN </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">Power-Off from EN</p> </td> </tr> <tr style="height:168.8pt"> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:168.8pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4533gj6/html-images/image003_en.png"><img border="0" width="292" height="206" id="圖片 8" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4533gj6/html-images/image003_en.png" 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:168.8pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4533gj6/html-images/image004_en.png"><img border="0" width="293" height="208" id="圖片 9" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4533gj6/html-images/image004_en.png" 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">Power-On and PWM Dimming from EN</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">Power-Off and PWM Dimming from EN</p> </td> </tr> <tr style="height:172.9pt"> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:172.9pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4533gj6/html-images/image005_en.png"><img border="0" width="292" height="208" id="圖片 3" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4533gj6/html-images/image005_en.png" 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:172.9pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4533gj6/html-images/image006_en.png"><img border="0" width="293" height="209" id="圖片 5" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4533gj6/html-images/image006_en.png" alt="Technical Document Image Preview" /></a></p> </td> </tr> </table>

11. Evaluation Board Layout

<p class="23CxSpFirst"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4533gj6/html-images/image007_en.jpg"><img border="0" width="491" height="331" id="圖片 1" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4533gj6/html-images/image007_en.jpg" alt="一張含有 電路, 電子產品, 電子工程, 螢幕擷取畫面 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_rt4533gj6/html-images/image008_en.jpg"><img border="0" width="491" height="331" id="圖片 10" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt4533gj6/html-images/image008_en.jpg" alt="一張含有 文字, 螢幕擷取畫面, 圓形 的圖片 自動產生的描述" /></a></p> <p class="23">Figure 2. Bottom View (2^nd Layer)</p>