LK112M STMICROELECTRONICS [STMicroelectronics], LK112M Datasheet
LK112M
Manufacturer Part Number
LK112M
Description
LOW NOISE LOW DROP VOLTAGE REGULATOR WITH SHUTDOWN FUNCTION
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.LK112M.pdf
(12 pages)
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DESCRIPTION
The LK112 is a low dropout linear regulator with a
built in electronic switch. The internal switch can
be controlled by TTL or CMOS logic levels. The
device is ON state when the control pin is pulled to
a logic high level. An external capacitor can be
used connected to the noise bypass pin to lower
the output noise level to 30 V
pass transistor is used to achieve a low dropout
voltage.
SCHEMATIC DIAGRAM
June 2003
OUTPUT CURRENT UP TO 150mA
LOW DROPOUT VOLTAGE (350mV AT
I
VERY LOW QUIESCENT CURRENT: 0.1 A
IN OFF MODE AND MAX 250 A IN ON
MODE AT I
LOW OUTPUT NOISE: TYP 30 V AT
I
WIDE RANGE OF OUTPUT VOLTGAES
INTERNAL CURRENT AND THERMAL LIMIT
OUT
OUT
=150mA)
=60mA AND 10Hz<f<80KHz
OUT
=0mA
LOW NOISE LOW DROP VOLTAGE REGULATOR
rms
. An internal PNP
WITH SHUTDOWN FUNCTION
The LK112 has a very low quiescent current in ON
MODE while in OFF MODE the Iq is reduced
down to 100nA max. The internal thermal
shutdown circuitry limits the juntion temperature to
below 150°C. The load current is internally
monitored and the device will shutdown in the
presence of a short circuit or overcurrent condition
at the output.
SOT23-5L
SERIES
LK112
1/12
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