Datasheet > LFXXC

LFXXC

更新时间： 2024-11-05 04:20:23

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
45页	1017K
描述
Very low drop voltage regulators with inhibit

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LFXXC 数据手册

LFxxAB

LFxxC

Very low drop voltage regulators with inhibit

Features

■ 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;

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

■ Internal current and thermal limit

■ Only 2.2 µF for stability

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

PPAK

DPAK

PENTAWATT

25°C

■ 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 LFxxAB/LFxxC 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

suitable for Low Noise, Low Power applications

and specially in battery powered systems.

Table 1.

Device summary

Order codes

LF15C

LF27AB

LF30C

LF40C

LF40AB

LF50C

LF80AB

LF85C

LF15AB

LF18C

LF30AB

LF33C

LF85AB

LF90C

LF18AB

LF25C

LF50AB

LF60C

LF33AB

LF35C

LF90AB

LF120C

LF120AB

LF25AB

LF27C

LF60AB

LF80C

LF35AB

July 2007

Rev. 18

1/45

www.st.com

12 3 4 5 6 7...45

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