AP1533-EV Application Note AP1533 Application Information and Demo Board User Guide Contents 1. Description 2. Schematic 3. PCB Layout 4. Bill of Materials 5. Vendors of peripheral components 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 Mar. 2011 www.diodes.com Diodes Incorporated AP1533-EV Application Note AP1533 Application Information and Demo Board User Guide 1. Description AP1533 is step-down switching regulator with PWM control. AP1533 provides low-ripple power, high efficiency, and excellent transient characteristics. 2. EVM Schematic 3. Board Layout Top Layer Bottom Layer 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 Mar. 2011 www.diodes.com Diodes Incorporated AP1533-EV Application Note AP1533 Application Information and Demo Board User Guide 4. Bill of Materials Component Location C2, C4 C3,C6, C8 C1, C5, C7, C9, C10 R1 R2 R3 R4 R5 U1 L1 D1 VIN, VOUT, GND PCB Q'ty Value Source 1 Aluminum Cap 470uF/16V 3 Cap MLCC 0.1uF/50V/X5R Size TEAPO TAIYO YUDEN UMK212BJ104KG-T 0 NC 1 1 0 1 1 1 1 1 Part No. CAP8/3.5mm C0805 - 6.8kΩ, 1% 1.3kΩ, 1% NC 5.6kΩ, 1% 100kΩ, 1% 3A, PWM 33uH/4.2A 3A/40V C0805 YAGEO YAGEO YAGEO YAGEO Diodes Inc. Wurth Electronics Diodes Inc. RC0805FR-SK RC0805FR-SK RC0805FR-SK RC0805FR-SK AP1533 7447 series B340 R0805 R0805 R0805 R0805 SOP-8L 12*12*10mm SMC - - 2.2mmX 1.35mm Diodes Inc. TDB0009 1860milX 1300mil 4 Header_1 1 AP1530/33/34EV Board Ver0.1 The recommended minimum ROCSET value is summarized below： ： VIN(V) 4 5 12 18 23 VOUT(V) 0.8 3.3 5 12 12 ROCSET(Ω) 3.9k 3.3k 3.3k 3.3k 4.7k 5. Vendors of peripheral components ： Suggested Capacitors for C2 and C4 Vendor Capacitance TEAPO Aluminum Cap 470uF/16V Suggested Capacitors for C3 C6 and C8 、 Vendor TAIYO YUDEN ： Capacitance Cap MLCC 0.1uF/50V/X5R Type DIP Series Type SMD Series UMK212BJ104KG-T ： Suggested Resistor Vendor YAGEO Type SMD Series RC0805FR-SK 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 Mar. 2011 www.diodes.com Diodes Incorporated