SC1150

© 1998 SEMTECH CORP.

652 MITCHELL ROAD NEWBURY PARK CA

PROGRAMMABLE DC/DC

CONTROLLER

March 11, 1998

3

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

V

CC

Chip Supply Voltage

3

OVP

(1)

High Signal out if V

4

PWRGOOD

(1)

Open collector logic output, high if V

10% of setpoint

5

CSm

Current Sense Input (negative)

6

CSp

Current Sense Input (positive)

7

PGND

Power Ground

8

DH

High side Driver Output

9

BST

Vcc for high side Driver

10

SHUTDOWN

(1)

Logic low shuts down the converter

11

VOSENSE

Top end of internal feedback chain

12

FB

Voltage Feedback Input

13

VID3

(1)

Programming Input (MSB)

14

VID2

(1)

Programming Input

15

VID1

(1)

Programming Input

16

VID0

(1)

Programming Input (LSB)

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

PWRGOOD

VID0

VID1

VID2

VID3

BST

DH

VOSENSE

GND

SHUTDOWN

PGND

VCC

CSp

CSm

OVP

FB