Datasheet

LM20343
www.ti.com SNVS559B –MAY 2008–REVISED APRIL 2013
Table 4. Bill of Materials (V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 3A, f
SW
= 750 kHz)
ID Qty Part Number Size Description Vendor
U1 1 LM20343MH HTSSOP IC, Switching Regulator TI
C1 1 C3225X5R1E226M 1210 22µF, X5R, 25V, 20% TDK
C2, C3 2 GRM21BR61E475KA12L 0805 4.7µF, X5R, 25V, 10% MuRata
C5, C6 1 C1608X7R1H104K 0603 100nF, X7R, 50V, 10% TDK
C4 1 C1608X5R1A105K 0603 1µF, X7R, 10V, 10% TDK
C7 1 C1608C0G1H100J 0603 10pF, C0G, 50V, 5% TDK
C8 1 C1608C0G1H102J 0603 1nF, C0G, 50V, 5% TDK
C9 1 6TPB150MAZB B 150µF,POSCAP, 6.3V, 20% Sanyo
D1 1 CMMSH1-40-NST SOD123 Vr = 40V, Io = 1A, Vf = 0.55V Central
Semiconductor
L1 1 MSS1048-472NLB MSS1048 4.7µH, 0.012 Ohms, 6.4A Coilcraft
R1, R5 2 CRCW06031002F 0603 10kΩ, 1% Vishay
R2 1 CRCW06034992F 0603 49.9kΩ, 1% Vishay
R3 1 CRCW06034992F 0603 49.9kΩ, 1% Vishay
R4 1 CRCW06033092F 0603 30.9kΩ, 1% Vishay
Copyright © 2008–2013, Texas Instruments Incorporated Submit Documentation Feedback 23
Product Folder Links: LM20343