LF27AB

更新时间： 2024-11-21 23:15:15

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
34页	650K
描述
VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT

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中文翻译

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数据手册

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LF27AB 数据手册

LF00

SERIES

VERY LOW DROP

VOLTAGE REGULATORS WITH INHIBIT

■

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

LOGIC-CONTROLLED ELECTRONIC

SHUTDOWN

PENTAWATT

■

OUTPUT VOLTAGES OF 1.25; 1.5; 1.8; 2.5;

2.7; 3; 3.3; 3.5; 4; 4.5; 4.7; 5; 5.2; 5.5; 6; 8;

8.5; 9; 12V

■

INTERNAL CURRENT AND THERMAL LIMIT

ONLY 2.2 µF FOR STABILITY

AVAILABLE IN ± 1% (AB) OR ± 2% (C)

SELECTION AT 25 °C

TO-220

PPAK

TO-220FP

■

SUPPLY VOLTAGE REJECTION: 80db (TYP.)

TEMPERATURE RANGE: -40 TO 125 °C

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.

DPAK

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.

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.

In the 5 pins configuration (PENTAWATT and

PPAK) a Shutdown Logic Control function is

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

SCHEMATIC DIAGRAM

August 2003

1/34

12 3 4 5 6 7...34

中文翻译

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