AP5727-EV Application Note AP5727 Application Information and Demo Board User Guide Contents 1. Description 2. Schematic 3. EVM Board and Efficiency 4. PCB Layout 5. Bill of Materials This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. 1/3 Rev. A MAY 2010 www.diodes.com Diodes Incorporated AP5727-EV Application Note AP5727 Application Information and Demo Board User Guide 1. Description The AP5727(Boost) evaluation modules (EVM) provide a means for the user to evaluate quickly the functionality and electrical performance of the AP5727 device. All inputs and outputs are brought out to test points for control and monitoring. All passive components are included on the EVM for device operation. The input pin should be connected to an external supply; the output should be connected to a load. 2. EVM Schematic VOUT VIN D1 L1 1 2 22uH B0540WS Cout 10uF Cin 4.7uF U1 R1 11K 1 2 R2 1K 3 SW Vin 4 Vss FB EN 5 AP5727 Figure 1. AP5727 schematic 3. EVM board and Efficiency IOUT (m A) vs. Efficiency (%) 90 V IN = 5V Efficiency(%) 85 V IN = 4.2V 80 V IN = 3.6V 75 V IN = 3.3V 70 65 60 55 50 0 20 40 IOUT (mA) 60 80 This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. 2/3 Rev. A MAY 2010 www.diodes.com Diodes Incorporated AP5727-EV Application Note AP5727 Application Information and Demo Board User Guide 4. Board Layout Top Side Bottom Side 5. Bill of Materials Component Quantity Value Cin 1 4.7uF Cout 1 10uF Location Source 1 Size 22uH/0.56A LMK316 B7 475KL-T TAIYO YUDEN LMK316 F 106ZL-T Wurth 744042220 Electronics GOTREND GLP3810PH220N 3.8 X 3.8 X 1.05 22uH/0.51A TAIYO YUDEN 4.0 X 4.0 X 1.25 TAIYO YUDEN 22uH/0.88A L1 Part No. NR4012 4.8 X 4.8 X 1.6 R2 1 1kΩ(1%) YAGEO R0805 R1 1 11kΩ(1%) YAGEO R0805 40V/0.5A ZETEX ZLLS400 SOD323 D1 1 40V/0.5A DIODES B0540WS SOD323 40V/0.25A DIODES SDM20U40 SOD523 U1 1 AP5727_SOT26 Diodes PCB 1 SOT26 TDB0045 This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. 3/3 Rev. A MAY 2010 www.diodes.com Diodes Incorporated