SC1153

PROGRAMMABLE SYNCHRONOUS DC/DC

CONTROLLER FOR ADVANCED PROCESSORS

© 2000 SEMTECH CORP.

652 MITCHELL ROAD NEWBURY PARK CA 91320

PRELIMINARY - October 3, 2000

3

PIN CONFIGURATION

NOTE:

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

PIN DESCRIPTION

Pin #

Pin Name

Pin Function

1

GND

Small Signal Analog and Digital Ground

2

VCC

Chip Supply Voltage

3

OVP

High Signal Out if V

4

PWRGOOD

(1)

Open collector logic output, high if V

5

CS(-)

Current Sense Input (negative)

6

CS(+)

Current Sense Input (positive)

7

PGNDH

Power Ground for High Side Switch

8

DH

High Side Driver Output

9

NC

Not Connected

10

PGNDL

Power Ground for Low Side Switch

11

DL

Low Side Driver Output

12

BSTL

Vcc for Low Side Driver (Boost)

13

BSTH

Vcc for High Side Driver (Boost)

14

SHUTDOWN

(1)

Logic Low shuts down the converter

15

VOSENSE

Top end of internal feedback chain

16

VID4

(1)

Programming Input (MSB)

17

VID3

(1)

Programming Input

18

VID2

(1)

Programming Input

19

VID1

(1)

Programming Input

20

VID0

(1)

Programming Input (LSB)