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LK112SM17TR Fiches technique(PDF) 1 Page - STMicroelectronics

No de pièce LK112SM17TR
Description  LOW NOISE LOW DROP VOLTAGE REGULATOR WITH SHUTDOWN FUNCTION
Download  11 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LK112SM17TR Fiches technique(HTML) 1 Page - STMicroelectronics

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February 2003
s
OUTPUT CURRENT UP TO 200mA
s
LOW DROPOUT VOLTAGE (500mV MAX AT
IOUT=200mA)
s
VERY LOW QUIESCENT CURRENT: 0.1
µA
IN OFF MODE AND MAX 250
µA IN ON
MODE AT IOUT=0mA
s
LOW OUTPUT NOISE: TYP 30
µV AT
IOUT=60mA AND 10Hz<f<80KHz
s
WIDE RANGE OF OUTPUT VOLTAGES
s
INTERNAL CURRENT AND THERMAL LIMIT
s
VOUT TOLERANCE ± 2% (AT 25°C)
DESCRIPTION
The LK112S 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
µV
rms. An internal PNP
pass transistor is used to achieve a low dropout
voltage.
The LK112S 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.
LK112S
SERIES
LOW NOISE LOW DROP VOLTAGE REGULATOR
WITH SHUTDOWN FUNCTION
SCHEMATIC DIAGRAM
SOT23-5L


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