LP2950/LP2951 150mA Low Drop Out Voltage Regulators
PRODUCT DESCRIPTION
The LP2950 and LP2951 are
low power voltage regulators. These
devices are an excellent choice for
use in battery powered applications
such as cordless telephone, radio
control systems, and portable
computers.
The LP2950 and LP2951
feature very low quiescent current
(75µA Typ.) and very low drop
output voltage (Typ. 40µV at light
load and 380mV at 100mA). This
includes a tight initial tolerance of
0.5% typ., extremely good load and
line regulation 0.05% typ. and very
low output temperature coefficient,
making the LP2950/LP2951 useful
as a low power voltage reference.
Other key additional feature of this
unregulated input voltage transient of
-20V below ground (reverse battery).
The error flag output feature is
used as power-on reset for warn of a
low output voltage, due to following
batteries on input. Other feature is
the logic compatible shutdown input
which enabled\s the regulator to be
switched on and off. The LP2950 is
offered in 3-pin TO-92 package
compatible with other 5 volt
regulators. The LP2951 is available
in 8-pin plastic, SOP-8 package.
The regulator output voltage
may be pin-strapped for a 5 volt of
programmed from 1.24 volt to 29
volts with external pair of resistors.
Using of as design, processing and
testing techniques make our LP2950
and LP2951 superior over similar
products.
FEATURES
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Output accuracy 5V, 150mA output
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Very low quiescent current
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Low dropout voltage
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Extremely tight load and line regulation
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Very low temperature coefficient
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Need only 1µF for stability
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Unregulated DC input can withstand -20V reverse
battery and +60V positive transients
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Direct replacement for LP2950/LP2951 sockets
APPLICATIONS
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Battery powered systems
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Cordless telephones
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Radio control systems
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Portable/Palmtop/Notebook computers
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Portable consumer equipment
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Portable instrumentation
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Avionics
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Automotive electronics
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SMPS Post-Regulator
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Voltage reference
LP2951 VERSIONS ONLY
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Error flag warns of output dropout
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Logic-Controlled electronic shutdown
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Output programmable from 1.24 to 29V
PIN ARRANGEMENT
TO-92
PIN: 1. OUTPUT
2. SENSE
3. SHUTDOWN
4. GROUND
5. ERROR
6. 5V TAP
7. FEEDBACK
8. INPUT
ORDERING INFORMATION
TO-92
3-PIN
LP2950CT
LP2950ACT
LP2950BCT
PLASTIC
SOP 8-PIN
OPER.
TEMP.
IND.
IND.
IND.
IND.
IND.
IND.
PIN: 1. OUTPUT
2. GND
3. INPUT
SOP-8
LP2951CS
LP2951ACS
LP2951BCS
3-1
FCI [ FIRST COMPONENTS INTERNATIONAL ]
