SC4624A View Datasheet(PDF) - Semtech Corporation

Part Name

Description

MFG CO.

SC4624A

Low Input Voltage, High Efficiency, 4A Integrated FET Synchronous Step down DC/DC Regulator

Semtech Corporation 

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SC4624A

POWER MANAGEMENT

OAppelriac5taiotinon Information (Con4t.)

3

2

1

5VIN, 1VOUT, 4A, all ceramic capacitors ( application circuit #1 )

5Vin

D

R5

R6

10k

10k

R2

10R

C6

C3

U1

1nF

1uF

7 VCC

VCC 12

R10

0R

6 PGOOD

AGND 13

9 SYNC/EN

FS 5 R11

47.5k

C

C1 2.2pF

8 NC

SS 4

C7 47nF

1Vout@4A

C8

R1

C2

10 COMP

20k

390pF

L1 1.8uH

11 FB

16 PH

NC 20

C5 opt

ISET 3

R3

30k

PVIN 1

270pF

R7

R8

C4

2.32k 28.7k

B

22uF

17 PH

18 PH

19 NC

PVIN 2

PGND 15

PGND 14

C9

22uF

(2)

R12

R9

28.7k

SC4624A

MLB-160808-0600R-S2

C11

R4

VIN=5V; Vout=1V/4A

opt

opt

Switching Frequency=550kHz

L1: TOKO D104C(919AS-1R8N)

Note: (1,2) Option for stability

R12: Multilayer chip inductors; MLB-160808-0600R-S2

A

Input(C9)/Output Capacitors(C4): Panasonic ECJ33YBOJ226M(22uF/6.3V)

5

4

3

2

1

 2008 Semtech Corp.

17

www.semtech.com

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