LD1085XX

更新时间： 2024-11-22 04:59:23

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		调节器
页数	文件大小	规格书
27页	942K
描述
3 A low drop positive voltage regulator adjustable and fixed

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LD1085XX 数据手册

LD1085xx

3 A low drop positive voltage regulator adjustable and fixed

Features

■ Typical dropout 1.3 V (at 3 A)

■ Three terminal adjustable or fixed output

voltage 1.5 V, 1.8 V, 2.5 V, 3.3 V, 5 V.

■ Guaranteed output current up to 3 A

■ Output tolerance 1ꢀ at 25 °C and 2ꢀ in full

TO-220

TO-220FP

temperature range

■ Internal power and thermal limit

■ Wide operating temperature range -40 °C to

125 °C

■ Package available: TO-220, TO-220FP,

D²PAK

D²PAK/A

DPAK

DPAK, D PAK, D PAK/A

■ Pinout compatibility with standard adjustable

VREG

The device is supplied in TO-220, TO-220FP,

DPAK, D PAK and D PAK/A. On chip trimming

allows the regulator to reach a very tight output

voltage tolerance, within 1ꢀ at 25 °C.

Description

The LD1085xx is a low drop voltage regulator

able to provide up to 3 A of output current.

Dropout is guaranteed at a maximum of 1.2 V at

the maximum output current, decreasing at lower

loads. The LD1085xx 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 LD1085xx quiescent current flows

into the load, so increase efficiency. Only a 10 µF

minimum capacitor is need for stability.

Table 1.

Device summary

Part number

LD1085XX

LD1085XX15

LD1085XX18

LD1085XX25

LD1085XX33

LD1085XX50

December 2007

Rev 19

1/27

www.st.com

12 3 4 5 6 7...27

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