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PJ2950/PJ2951
150mA Low Dropout Voltage Regulators
T 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
for use in battery-powered applications such as cordless
on input. Other feature is the logic-compatible shutdown
telephone, radio control systems, and portable computers.
input which enable the regulator to be switched on and off.
The PJ2950 and PJ2951 features very low quiescent
The PJ2950 is offered in 3-pin TO-92 package compatible
current (75μA Typ.) and very low drop output voltage
with other 5 volt regulators. The PJ2951 is available in 8-pin
(Typ. 40μV at light load and 380 mV at 100 mA).This
plastic, SOP-8 package.
includes a tight initial tolerance of 0.5% typ., extremely
The regulator output voltage may be pin-strapped for a
good load and line regulation 0.05% typ. and very low
5 & 3.3 volt of programmed from 1.24 volt to 29 volts with
output temperature coeffi cient, making the PJ2950/PJ2951
external pai r of resistors. Using of as design, processing and
useful as a low-power voltage reference. Other key
testing techniques make our PJ2950 and PJ2951 superior
additional feature of this unregulated input voltage transient
over similar products.
of -20V below ground (reverse battery).
____________________________________________________________________________________________________
FEATURES
• Output accuracy 5V & 3.3V, 150 mA output
T O-92
• Very low quiescent current
PJ2950/2950A
• Low dropout voltage
• Extremely tight load and line regulation
• Very low temperature coefficient
Pin 1. Output
2. Ground
3. Input
• Need only 1μF for stability
• Unregulated DC input can withstand -20V reverse
battery and +60V positive transients
• Direct replacem ent for PJ2950/PJ2951 sockets
PJ2951 VERSIONS ONLY
SOP-8
PJ2951/2951A
Pin
1. Output
2. Sense
3. Shutdown
4. Ground
5. Error
6. 5 Vtap
7. Feedback
8. Input
• Error Flag warns of output dropout
• Logic-Controlled electronic shutdown
• Output programmable from 1.24 to 29V
ORDERING INFORMATION
APPLICATIONS
• Battery powered systems
• Portable instrumentation
• Avionics
• Automotive Electronics
• SMPS Post-Regulator
• Voltage Reference
• Portable/Palm top / Notebook computers
• Portable consumer equipment
• Radio control systems
• Cordless telephones
Device
P J2950ACT
PJ2950CT
PJ2950ACT -3. 0
PJ2950CT -3. 0
PJ2950ACT -3. 3
PJ2950CT -3. 3
PJ2951ACS
PJ2951CS
PJ2951ACS-3.3
PJ2951CS-3.3
Operating Temperature
-20 ~ +85 ℃
Package
T O-92
SOP-8
1-7 2002/01.rev.A
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