SC1157 데이터 시트보기 (PDF) - Semtech Corporation

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SC1157

PROGRAMMABLE SYNCHRONOUS DC/DC CONTROLLER FOR ADVANCED PROCESSORS

Semtech Corporation 

PROGRAMMABLE SYNCHRONOUS DC/DC

SC1157

CONTROLLER FOR ADVANCED PROCESSORS

Preliminary - August 7, 2000

PIN DESCRIPTION

Pin #

1

2

3

4

5

6

Pin Name

GND

REF

VCC

CS(-)

CS(+)

PGND

7

DH

8

DL

9

BSTL

10 BSTH

11 SHUTDOWN

12 VOSENSE

13

VID3(1)

14

VID2(1)

15

VID1(1)

16

VID0(1)

Pin Function

Small Signal Analog and Digital Ground

Buffered Reference output

Chip Supply Voltage

Current Sense Input (negative)

Current Sense Input (positive)

Power Ground for High and Low Side Drivers

High Side Driver Output

Low Side Driver Output

Vcc for Low Side Driver (Boost)

Vcc for High Side Driver (Boost)

Logic Low shuts down the converter; High or open for normal operation.

Top end of internal feedback chain

Programming Input (MSB)

Programming Input

Programming Input

Programming Input (LSB)

NOTE:

(1) All logic level inputs and outputs are open collector TTL compatible.

PIN CONFIGURATION

© 2000 SEMTECH CORP.

3

652 MITCHELL ROAD NEWBURY PARK CA 91320

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