L4956

5A LOW DROP LINEAR REGULATOR

SPLITTED SUPPLY VOLTAGE FOR IM-

PROVED EFFICIENCY:

5A OUTPUT CURRENT

FAST LOAD TRANSIENT RESPONSE

0.75V TYP. DROP OUT VOLTAGE AT 5A

INHIBIT WITH ZEROCURRENT COMSUMPTION

POWER GOOD

SHORT CIRCUIT PROTECTION

THERMAL SHUTDOWN

HEPTAWATT PACKAGE

APPLICATIONS

PENTIUM

™ AND POWER PC™ SUPPLIES

LOW COST SOLUTION FOR 3.3V TO 1.5V

CONVERSION

SUITABLE

FOR

APPLICATIONS

WITH

STAND BY FEATURE

DESCRIPTION

The L4956 is an adjustable monolithic linear regu-

lator designed to satisfy very heavy load transient

and efficient power conversion from 3.3V to 1.26V

and lower, up to 5A.

Designed in BCDII technology, it uses a charge

pump technique to have a proper internal N-chan-

nel gate drive. The signal supply voltage input

opearte from 3V min to an absolute of 7V. An

RDSON of 150mV gives a voltage drop of 750mV

at 5A of load current.

Very fast load transients and

±1% of reference

voltage precision makes this device suitable for

supplying last micrprocessors generation and low

voltage logics.

The Heptawatt package enriches the device with

auxiliary functions like power good and inhibit.

March 1998

HEPTAWATT

ORDERING NUMBER: L4956

MULTIPOWER BCD TECHNOLOGY

V

SIG

D96IN374B

1

2

7

OUT

5

ADJ

4

GND

L4956

V

V

5Vbus

36

INH

PG

TYPICAL APPLICATION

1/8