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Bill of Materials

Pin Name Description Application Information

Bypass with a 2.2 µF–3.3 µF,

16 V

Internal Regulator Output

ceramic capacitor to GND.

Connect to the drain of the

main N-channel MosFET

17 IS Main Switch Current Sense switch for R

DS-ON

sensing or to

a sense resistor installed in the

source of the same device.

Connect a resistor to GND to

18 SLOPE Slope Compensation

set slope of additional ramp.

Connect through a series

High-Side LED Current Sense

19 HSN resistor to the negative side of

Negative

the LED current sense resistor.

Connect through a series

High-Side LED Current Sense

20 HSP resistor to the positive side of

Positive

the LED current sense resistor.

Connect to GND and place 6 -

DAP (21) DAP Thermal pad on bottom of IC 9 vias to bottom layer ground

pour.

6 Bill of Materials

Qty Part ID Part Value Manufacturer Part Number

4 C1, C5, C20, C23 0.1 µF X7R 10% 100V TDK C2012X7R2A104K

4 C2, C3, C16, C18 4.7 µF X7R 10% 100V TDK C5750X7R2A475K

4 C4, C6, C17, C19 10 µF X7R 10% 50V TDK C5750X7R1H106K

2 C7, C22 0.47 µF X7R 10% 16V MURATA GRM21BR71C474KA01L

0 C8 DNP

1 C9 2.2 µF X7R 10% 16V MURATA GRM21BR71C225KA12L

1 C10 1 µF X7R 10% 16V MURATA GRM21BR71C105KA01L

1 C11 47 pF COG/NPO 5% 50V AVX 08055A470JAT2A

1 C12 0.22 µF X7R 10% 16V MURATA GRM219R71C224KA01D

3 C13, C14, C21 100 pF COG/NPO 5% 50V MURATA GRM2165C1H101JA01D

1 C15 1 µF X7R 10% 16V MURATA GRM21BR71C105MA01L

1 D1 Schottky 100V 12A VISHAY 12CWQ10FNPBF

1 D2 Zener 10V ON-SEMI BZX84C10LT1G

4 J1, J2, J4, J5 Banana Jack KEYSTONE 575-8

1 J3 1x2 Header Male SAMTEC TSW-102-07-T-S

1 J6 BNC connector AMPHENOL 112536

1 J7 2x7 Header Male Shrouded SAMTEC TSSH-107-01-SDRA

1 L1 33 µH 20% 6.3A COILCRAFT MSS1278-333MLB

2 Q1, Q2 NMOS 100V 32A FAIRCHILD FDD3682

1 Q3 NMOS 60V 260mA ON-SEMI 2N7002ET1G

1 Q4 PNP 40V 200mA FAIRCHILD MMBT5087

1 Q5 PNP 150V 600 mA FAIRCHILD MMBT5401

1 Q6 NPN 300V 600mA FAIRCHILD MMBTA42

1 Q7 NPN 40V 200mA FAIRCHILD MMBT6428

2 R1, R11 12.4 kΩ 1% VISHAY CRCW080512K4FKEA

0 R2 DNP

3 R3, R20, R26 10Ω 1% VISHAY CRCW080510R0FKEA

1 R4 17.4 kΩ 1% VISHAY CRCW080517K4FKEA

1 R5 1.43 kΩ 1% VISHAY CRCW08051K43FKEA

SNVA397A–August 2009–Revised May 2013 AN-1967 LM3424 Buck-Boost Evaluation Board

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