LF40ABDT-TR

更新时间： 2024-02-14 19:49:04

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		稳压器
页数	文件大小	规格书
46页	599K
描述
Very low drop voltage regulators with inhibit

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LF40ABDT-TR 数据手册

LF00 series

Very low drop voltage regulators with inhibit

Feature summary

■ Very low dropout voltage (0.45V)

■ Very low quiescent current (TYP. 50 µA in OFF

mode, 500 µA in ON mode)

■ Output current up to 500 mA

TO-220FP

TO-220

■ Logic-controlled electronic shutdown

■ Output voltages of 1.5; 1.8; 2.5; 2.7; 3; 3.3; 3.5;

4; 5; 6; 8; 8.5; 9; 12V

■ Internal current and thermal limit

■ Only 2.2 µF for stability

PPAK

DPAK

PENTAWATT

■ Available in 1% (AB) or 2% (C) selection at

25°C

suitable for Low Noise, Low Power applications

and specially in battery powered systems.

■ Supply voltage rejection: 80db (typ.)

■ Temperature range: -40 to 125°C

In the 5 pins configuration (PENTAWATT and

PPAK) a Shutdown Logic Control function is

available (pin 2, TTL compatible). This means that

when the device is used as a local regulator, it is

possible to put a part of the board in standby,

decreasing the total power consumption. In the

three terminal configuration the device has the

same electrical performance, but is fixed in the

ON state. It requires only a 2.2 µF capacitor for

stability allowing space and cost saving.

Description

The LF00 series are very Low Drop regulators

available in PENTAWATT, TO-220, TO-220FP,

DPAK and PPAK package and in a wide range of

output voltages.

The very Low Drop voltage (0.45V) and the very

low quiescent current make them particularly

Schematic diagram

May 2006

Rev. 15

1/46

www.st.com

12 3 4 5 6 7...46

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