L4931ABDT25 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

L4931ABDT25

VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT

STMicroelectronics 

L4931 series

Very low drop voltage regulators with inhibit

Feature summary

■ Very low dropout voltage (0.4V)

■ Very low quiescent current

■ (Typ. 50 µA in off mode, 600µA in on mode)

■ Output current up to 250 mA

■ Logic-controlled electronic shutdown

■ Output voltages of 1.5; 2.5; 2.7; 3; 3.3; 3.5; 4;

4.7; 5; 8; 12V

■ Internal current and thermal limit

■ Only 2.2µF for stability

■ Available in ± 1% (AB) or 2% (C) selection at

25°C

■ Supply voltage rejection: 70db typ. for 5V

version

■ Temperature range: -40 to 125°C

Description

The L4931 series are very Low Drop regulators

available in TO-220, SO-8, DPAK, PPAK and TO-

92 packages and in a wide range of output

voltages.

Schematic diagram

TO-220

TO-92

PPAK

DPAK

SO-8

The very Low Drop voltage (0.4V) and the very

low quiescent current make them particularly

suitable for Low Noise, Low Power applications

and specially in battery powered systems.

In PPAK and SO-8 packages a Shutdown Logic

Control function is available TTL compatible. This

means that when the device is used as a local

regulator, it is possible to put a part of the board in

standby, decreasing the total power consumption.

It requires only a 2.2 µF capacitor for stability

allowing space and cost saving.

June 2006

Rev. 12

1/40

www.st.com

40

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