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LD1085C

SERIES

3A LOW DROP POSITIVE VOLTAGE

REGULATOR ADJUSTABLE AND FIXED

s

s

s

s

s

s

s

s

TYPICAL DROPOUT 1.3V (AT 3A)

THREE TERMINAL ADJUSTABLE OR FIXED

OUTPUT VOLTAGE 1.5V, 1.8V, 2.5V, 2.85V,

3.3V, 3.6V, 5V, 8V, 9V, 12V.

GUARANTEED OUTPUT CURRENT UP TO

3A

OUPUT TOLERANCE

鹵2%

AT 25擄C AND

鹵3%

IN FULL TEMPERATURE RANGE

INTERNAL POWER AND THERMAL LIMIT

WIDE OPERATING TEMPERATURE RANGE

-40擄C TO 125擄C

PACKAGE AVAILABLE : DPAK

PINOUT COMPATIBILITY WITH STANDARD

ADJUSTABLE VREG

DPAK

DESCRIPTION

The LD1085 is a LOW DROP Voltage Regulator

able to provide up to 3A of Output Current.

Dropout is guaranteed at a maximum of 1.5V at

the maximum output current, decreasing at lower

loads. The LD1085 is pin to pin compatible with

the older 3-terminal adjustable regulators, but has

better performances in term of drop and output

tolerance .

A 2.85V output version is suitable for SCSI-2

active termination. Unlike PNP regulators, where

a part of the output current is wasted as quiescent

current, the LD1085 quiescent current flows into

the load, so increase efficiency. Only a 10碌F

minimum capacitor is need for stability.

The device is supplied in DPAK. On chip trimming

allows the regulator to reach a very tight output

voltage tolerance, within 鹵2% at 25擄C.

SCHEMATIC DIAGRAM

July 2002

1/15

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