sc1157 Semtech Corporation, sc1157 Datasheet - Page 3

• Manufacturer Part Number: sc1157
• Description: Programmable Synchronous Dc/dc Controller For Advanced Processors
• Manufacturer: Semtech Corporation

PIN DESCRIPTION
Preliminary - August 7, 2000
Pin #
NOTE:
(1) All logic level inputs and outputs are open collector TTL compatible.
PIN CONFIGURATION
© 2000 SEMTECH CORP.
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
Pin Name
GND
REF
V
CS(-)
CS(+)
PGND
DH
DL
BSTL
BSTH
SHUTDOWN
VOSENSE
VID3
VID2
VID1
VID0
CC
(1)
(1)
(1)
(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)
PROGRAMMABLE SYNCHRONOUS DC/DC
CONTROLLER FOR ADVANCED PROCESSORS
652 MITCHELL ROAD NEWBURY PARK CA 91320
SC1157
3