LP2950/LP2951 150mA Low Drop Out Voltage Regulators
PRODUCTDESCRIPTION
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).
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.
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
APPLICATIONS
FEATURES
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Battery powered systems
Cordless telephones
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Output accuracy 5V, 150mA output
Very low quiescent current
Radio control systems
Portable/Palmtop/Notebook computers
Portable consumer equipment
Portable instrumentation
Avionics
Low dropout voltage
Extremely tight load and line regulation
Very low temperature coefficient
Need only 1µF for stability
Unregulated DC input can withstand -20V reverse
battery and +60V positive transients
Direct replacement for LP2950/LP2951 sockets
Automotive electronics
SMPS Post-Regulator
Voltage reference
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LP2951 VERSIONS ONLY
PINARRANGEMENT
TO-92
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Error flag warns of output dropout
Logic-Controlled electronic shutdown
Output programmable from 1.24 to 29V
PIN: 1. OUTPUT
2. SENSE
3. SHUTDOWN
4. GROUND
5. ERROR
ORDERINGINFORMATION
TO-92
3-PIN
LP2950CT
LP2950ACT
LP2950BCT
PLASTIC
SOP 8-PIN
OPER.
TEMP.
IND.
IND.
IND.
6. 5V TAP
7. FEEDBACK
8. INPUT
PIN: 1. OUTPUT
2. GND
SOP-8
3. INPUT
LP2951CS
LP2951ACS
LP2951BCS
IND.
IND.
IND.
3-1