L4963

L4963D

1.5A SWITCHING REGULATOR

®

This is advanced information on a new product now in development or underogin evaluation. Details are subject to change without notice.

1.5A OUTPUT LOAD CURRENT

5.1 TO 36V OUTPUT VOLTAGE RANGE

DISCONTINUOUS VARIABLE FREQUENCY

MODE

PRECISE (+/–2%) ON CHIP REFERENCE

VERY HIGH EFFICIENCY

VERY FEW EXTERNAL COMPONENTS

NO FREQ. COMPENSATION REQUIRED

RESET AND POWER FAIL OUTPUT FOR MI-

CROPROCESSOR

INTERNAL CURRENT LIMITING

THERMAL SHUTDOWN

DESCRIPTION

The L4963 is a monolithic power switching regulator

delivering 1.5A at 5.1V. The output voltage is adjust-

able from 5.1V to 36V, working in discontinuous

variable frequency mode. Features of the device

include remote inhibit, internal current limiting and

thermal protection, reset and power fail outputs for

microprocessor.

BLOCK DIAGRAM

Powerdip12+3+3

SO20

ORDERING NUMBERS:

L4963W

L4963D

The L4963 is mounted in a 12+3+3 lead Powerdip

(L4963) and SO20 large (L4963D) plastic pack-

ages and requires very few external components.

June 2000

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