April 2008

Rev 8

1/16

16

LD1085CXX

3 A low-drop, adjustable positive voltage regulator

Features

full temperature range

125 °C

VREG

Description

The LD1085C is a low drop voltage regulator able

to provide up to 3 A of output current. Dropout is

guaranteed at a maximum of 1.5 V at the

maximum output current, decreasing at lower

loads. The LD1085C is pin to pin compatible with

the older 3-terminal adjustable regulators, but has

better performances in term of drop and output

tolerance.

A 2.85 V 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 LD1085C quiescent current flows into

the load, so increase efficiency. Only a 10 µF

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 ± 2 % at 25 °C.

DPAK

Table 1.

Device summary

Order codes

Packages

LD1085CDT-R

DPAK (tape and reel)

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