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LF45C PDF预览

LF45C

更新时间: 2024-11-03 22:47:11
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

LF45C 数据手册

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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  

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