PJ2950/PJ2951
150mA Low Dropout Voltage Regulators
1-7
2002/01.rev.A
he Semiconductor PJ2950 and PJ2951 are a low power
voltage regulato rs. These devices are ex cellent choi ce
fo r use
in battery-powered applications such as cordless
telephone, radio control systems, and portable computers.
The PJ2950 and PJ2951 features very low quiescent
current (75 μ A Typ.) and very low drop output voltage
(Typ. 40 μ V at light load and 380 mV at 100 mA).This
includes a tight initial tolerance o f 0.5% typ., extremely
good load and line regulation 0.05% typ. and very low
output temperature coeffi cient, making the PJ2950/PJ2951
useful
as
a low-power voltage reference.
Other key
additional feature o f this unregulated input voltage transient
of -20V below ground (reverse battery).
The error flag output feature is used as power-on reset
fo r warn o f 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.
The regulator output voltage may be pin-strapped fo r a
5 & 3.3 volt of programmed from 1.24 volt to 29 volts with
external pai r o f resistors. Using of as design, processing and
testing techniques make our PJ2950 and PJ2951 superior
over similar products.
____________________________________________________________________________________________________
•
Output accuracy 5V & 3.3V, 150 mA output
•
Very low quiescent current
•
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 replacem ent fo r PJ2950/PJ2951 sockets
•
Error Flag warns o f output dropout
•
Logic-Controlled electronic shutdown
•
Output programmable from 1.24 to 29V
•
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
Operating Temperature
Packag e
P J2950ACT
PJ2950CT
PJ2950ACT-3.0
PJ2950CT-3.0
PJ2950ACT-3.3
PJ2950CT-3.3
TO-92
PJ2951ACS
PJ2951CS
PJ2951ACS-3.3
PJ2951CS-3.3
-20 ~ +85 ℃
SOP-8
T
FEATURES
APPLICATIONS
PJ2951 VERSIONS ONLY
TO-92
SOP-8
Pin
1. Output
5. Error
2. Sense
6. 5 Vtap
3. Shutdown
7. Feedback
4. Ground
8. Input
Pin 1. Output
2. Ground
3. Input
ORDERING INFO RMATION
PJ2950/2950A
PJ2951/2951A
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