TS2951/A

150mA Ultra Low Dropout Voltage Regulator

1/10

Version: D11

SOP-8

General Description

The TS2951/A are low power voltage regulators. These devices are excellent choice for use in battery-powered

applications such as cordless telephone, radio control systems, and portable computers.

The TS2951/A is features very low quiescent current (75uA Typ.) and very low drop output voltage (Typ. 40uV at

light load and 380 mV at 100 mA). This includes a tight initial tolerance of 1% (A version), extremely good load

and line regulation 0.05% typ. and very low output temperature coefficient, making the TS2951/A useful as a

low-power voltage reference.

TS2951/A have other key additional feature. The error flag output feature is used as power-on reset for warn of a

low output voltage, due to following batteries on input. The logic-compatible shutdown input which enable the

regulator to be switched on/off. The regulator output voltage may be pin-strapped for a 5.0 & 3.3 & 3.0 of

programmed from 1.24V to 29V with external pair of resistors. Using of as design, processing and testing

techniques make TS2951/A superior over similar products.

Features

●

Output voltage available in 5V & 3.3V

●

Extremely low quiescent current

●

Low dropout voltage

●

Extremely tight load and line regulation

●

Very low temperature coefficient

●

Need only 1uF for stability

●

Use as Regulator or Reference

●

Stable with low-ESR output capacitors

●

Current and thermal limiting

●

Error Flag warns of output dropout

●

Logic-Controlled electronic shutdown

●

Additional voltage tap

●

Output voltage sense

●

Output programmable from 1.24 to 29V

Ordering Information

Part No.

Package

Packing

TS2951CSxx RL

SOP-8

2.5Kpcs / 13” Reel

TS2951ACSxx RL

SOP-8

2.5Kpcs / 13” Reel

Note: Where xx denotes voltage option, available are

50= 5.0V

33= 3.3V

30= 3.0V

Application

●

Battery powered systems

●

SMPS Post-Regulator

●

Voltage Reference

●

Portable consumer equipment

Absolute Maximum Rating

Parameter

Symbol

Limit

Unit

Input Supply Voltage

- 0.3 ~ +30

V

Feedback Input Voltage

Vfeedback

- 1.5 ~ +30

V

Shutdown Input Voltage

Vshutdown

- 0.3 ~ +30

V

Error Comparator Output Voltage

Verror

- 0.3 ~ +30

V

Power Dissipation

Pd

Internally Limited

W

Operating Junction Temperature Range

- 40 ~ +125

Storage Temperature Range

-65 ~ +150

Lead Temperature (Soldering 5 second)

260

Thermal Resistance Junction to Ambient

180

Thermal Resistance Junction to Case

45

Pin Definition:

1. Output

8. Input

2. Sense

7. FB

3. Shutdown

6. Voltage tap

4. Ground

5. Error flag