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PJ2950

150mA Low Dropout Voltage Regulators

Promax Johnton 

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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