ST LM2931XX LM2931AXX33 LM2931AXX50 Very low drop voltage regulators with inhibit function handbook

The LM2931xx series regulators are very low drop regulators. The very low drop voltage and the low quiescent current make them particular suitable for low noise, low power applications and in battery- powered systems. The series features 0.15V typical dropout voltage and 2.5mA typical static current, output current up to 100mA. The series also features adjustable (from VOUT = 2.5V only SO-8) and fixed (3.3V and 5V) output voltage versions.


ST LM2931XX LM2931AXX33 LM2931AXX50 Very low drop voltage regulators with inhibit function handbook - cover page
Brand
STMicroelectronics
Category
Power Management
Document type
Datasheet
Language
English
Pages
21
File format
PDF
File size
861 KB
Published
10 August, 2012
Updated
01 October, 2023
MD5 checksum
A81B484B6112A0469BAA5E5029DF25E2

About this manual

The LM2931xx series are very low drop regulators designed for low noise and low power applications, particularly in battery-powered systems. They feature a very low dropout voltage of 0.15 V typical at 10 mA load and low quiescent current. The 8-pin SO-8 configuration includes a shutdown logic control function to put parts of a board in standby, reducing total power consumption.

What's inside

  • Diagram
  • Pin configuration
  • Maximum ratings
  • Application circuits
  • Electrical characteristics
  • Typical characteristics
  • Package mechanical data
  • Revision history

Specifications

Dropout voltage (typical)0.15 V at 10 mA load
Quiescent current (typical)2.5 mA at 100 mA load
Output currentUp to 100 mA
Temperature range-40 to 125 °C
Load dump protectionUp to 60 V
Reverse transient protectionUp to -50 V

Frequently asked questions

What is the typical dropout voltage?

The typical dropout voltage is 0.15 V at a 10 mA load.

Which packages are available for the LM2931?

The device is available in TO-92, DPAK, and SO-8 packages.

Does the SO-8 version have a shutdown function?

Yes, the 8-pin SO-8 configuration includes a shutdown logic control function.

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