®
LF00AB/C
SERIES
VERY LOW DROP
VOLTAGE REGULATORS WITH INHIBIT
s
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VERY LOW DROPOUT VOLTAGE (0.45V)
VERY LOW QUIESCENT CURRENT
(TYP. 50
µA
IN OFF MODE, 500µA IN ON
MODE)
OUTPUT CURRENT UP TO 500 mA
LOGIC-CONTROLLED ELECTRONIC
SHUTDOWN
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 2.2µF FOR STABILITY
AVAILABLEIN
±
1% (AB) OR
±
2% (C)
SELECTION AT 25
o
C
SUPPLY VOLTAGE REJECTION: 80 db (TYP.)
TEMPERATURE RANGE: -40 TO 125
o
C
PENTAWATT
TO-220
ISOWATT220
s
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
1/32
STMICROELECTRONICS [ STMICROELECTRONICS ]
