LF00AB Datasheet, PDF (1/32 Pages) STMicroelectronics – VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT

LF00AB/C
®
SERIES
VERY LOW DROP
VOLTAGE REGULATORS WITH INHIBIT
s VERY LOW DROPOUT VOLTAGE (0.45V)
s VERY LOW QUIESCENT CURRENT
(TYP. 50 µA IN OFF MODE, 500µA IN ON
MODE)
s OUTPUT CURRENT UP TO 500 mA
s LOGIC-CONTROLLED ELECTRONIC
SHUTDOWN
s 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
s INTERNAL CURRENT AND THERMAL LIMIT
s ONLY 2.2µF FOR STABILITY
s AVAILABLEIN ± 1% (AB) OR ± 2% (C)
SELECTION AT 25 ^oC
s SUPPLY VOLTAGE REJECTION: 80 db (TYP.)
TO-220
PENTAWATT
ISOWATT220
s TEMPERATURE RANGE: -40 TO 125 ^oC
DESCRIPTION
The LF00 series are very Low Drop regulators
available in PENTAWATT, TO-220,
ISOWATT220, 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.
SCHEMATIC DIAGRAM
PPAK
DPAK
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
July 1999
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