SC1110

SINK AND SOURCE DC/DC CONTROLLER FOR

TERMINATION POWER SUPPLY APPLICATIONS

© 2000 SEMTECH CORP.

652 MITCHELL ROAD NEWBURY PARK CA 91320

PRELIMINARY - October 9, 2000

4

NOTE:

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

PIN DESCRIPTION

Pin #

Pin Name

Pin Function

1

VCC

Chip supply voltage.

2

SS/ENBL

Soft start/Enable.

3

OCSET

Current limit set point.

4

PWRGD

Logic high indicates correct output.

5

GND

Ground.

6

PHASE

Phase node connection between MOSFET’s.

7

DL

Low side driver output.

8

DH

High side driver output.

9

BSTH

High side drive supply.

10

BSTL

Low side drive supply.

11

COMP

Error amplifier output, compensation.

12

SENSE

Error amplifier negative input.

13

REFIN

Error amplifier positive input.

14

REFOUT

Buffered reference voltage.

PIN CONFIGURATION

Top View

(14-Pin SOIC)