PJ2950/PJ2951
150mA Low Dropout Voltage Regulators
he Semiconductor PJ2950 and PJ2951 are a low power
voltage regulators. These devices are excellent choi ce
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 enable the regulator to be switched on and off.
The PJ2950 is offered in 3-pin TO-92 package compatible
with other 5 volt regulators. The PJ2951 is available in 8-pin
plastic, SOP-8 package.
T
for use in battery-powered applications such as cordless
telephone, radio control systems, and portable computers.
The PJ2950 and PJ2951 features very low quiescent
current (75μA Typ.) and very low drop output voltage
(Typ. 40μV at light load and 380 mV at 100 mA).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 PJ2950/PJ2951
useful as a low-power voltage reference. Other key
additional feature of this unregulated input voltage transient
of -20V below ground (reverse battery).
The regulator output voltage may be pin-strapped for a
5 & 3.3 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 PJ2950 and PJ2951 superior
over similar products.
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FEATURES
TO-92
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Output accuracy 5V & 3.3V, 150 mA output
Very low quiescent current
PJ2950/2950A
Low dropout voltage
Pin 1. Output
2. Ground
3. Input
Extremely tight load and line regulation
Very low temperature coefficient
Need only 1μF for stability
PJ2951/2951A
Unregulated DC input can withstand -20V reverse
battery and +60V positive transients
Direct replacement for PJ2950/PJ2951 sockets
SOP-8
Pin
1. Output
5. Error
2. Sense
6. 5 Vtap
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3. Shutdown 7. Feedback
4. Ground 8. Input
PJ2951 VERSIONS ONLY
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Error Flag warns of output dropout
Logic-Controlled electronic shutdown
Output programmable from 1.24 to 29V
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ORDERING INFORMATION
Device
Operating Temperature
Package
APPLICATIONS
PJ2950ACT
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Battery powered systems
Portable instrumentation
Avionics
TO-92
PJ2950CT
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PJ2950ACT-3.0
PJ2950CT-3.0
PJ2950ACT-3.3
PJ2950CT-3.3
PJ2951ACS
Automotive Electronics
SMPS Post-Regulator
Voltage Reference
-20 ~ +85 ℃
Portable/Palm top / Notebook computers
Portable consumer equipment
Radio control systems
Cordless telephones
SOP-8
PJ2951CS
PJ2951ACS-3.3
PJ2951CS-3.3
1-7
2002/01.rev.A