Datasheet

Evaluation Board Schematic

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Table 1. LM3481 Bill of Materials (BOM)

Qty Designator Value Package Description Manufacturer Part Number

1 C1 100 µF Polarized Capacitor, 63V, Sanyo 63CV100KX

10%

2 C2, C3 4.7 µF 1812 Ceramic, X7R, 50V, 10% MuRata C4532X7R1H475M

1 C4 0.027 µF 0603 Ceramic, X7R, 100V, 10% Kemet C0603C273K1RACTU

1 C5 100 pF 0603 Ceramic, X7R, 100V, 10% AVX 06031C331KAT2A

1 C6 4700 pF 0603 Ceramic, X7R, 100V, 10% AVX 06031C222KAT2A

1 C7 2200 pF 0603 Ceramic, X7R, 16V, 10% TDK C1608X7R1C105K

1 C8 1000 pF 1206 Ceramic, X7R, 50V, 10% TDK C3216X7R1H105K

2 C9, C12 22 µF 1812 Ceramic, X7R, 20V, 20% TDK C4532X7R1C226M

2 C10, C11 180 µF Electrolytic capacitor Sanyo 16SVP180M

1 D1 SMC Schottky Diode, 40V Central Semi CMSH5-40

2 J1, J2 Through Hole Jumpers Sullins Electronics PBC02SAAN

1 L1 4.7 µH Coupled Inductor, 8.25A Cooper DRQ127-4R7-R

4 P1, P2, P3, P4 Terminal, Turret, TH Keystone 1598-2

Electronics

1 Q1 PowerPAK N Channel MOSFET, 30V Vishay Si7386DP

1 R1 100 ohm 0603 RES, 1%, 0.1W Vishay-Dale CRCW0603100RFKEA

1 R2 40.2k ohm 0603 RES, 1%, 0.1W Vishay-Dale CRCW060340K2FKEA

1 R3 20.5k ohm 0603 RES, 1%, 0.1W Vishay-Dale CRCW060320K5FKEA

1 R4 10.7k ohm 0603 RES, 1%, 0.1W Vishay-Dale CRCW060310K7FKEA

1 R5 20.0k ohm 0603 RES, 1%, 0.1W Vishay-Dale CRCW060320K0FKEA

1 R6 59.0k ohm 0603 RES, 1%, 0.1W Vishay-Dale CRCW060359K0FKEA

1 R7 DNP Resistor DNP Resistor

1 R8 20m ohm RES, 1%, 1W Vishay-Dale WSL2512R0200FEA

1 R9 6.8k ohm 0603 RES, 5%, 0.1W Vishay-Dale CRCW06036K80JNEA

1 R10 38.3k ohm 0603 RES, 1%, 0.1W Vishay-Dale CRCW060338K3FKEA

3 TP1, TP2, TP3 Through Hole Test Point, Keystone 5002

Miniature, White Electronics

1 U1 VSSOP Low-Side N-Channel Texas Instruments LM3481

Controller

AN-2094 LM3481 SEPIC Evaluation Board SNVA461A–September 2011–Revised April 2013

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