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Manufacturer Part #


LM2931 Series 100 mA Adjustable Output SMT LDO Voltage Regulator - SOIC-8

Product Specification Section
Technical Attributes
Attributes Table
Input Voltage-Min: 14V
Input Voltage-Max: 40V
Output Voltage Range: 2.7V to 29.5V
Dropout Voltage-Max: 0.6V
Output Current-Max: 100mA
Tolerance (%): ±5%
Operating Temp Range: -40°C to +125°C
Regulator Topology: Adjustable
No. of Outputs: Single
Output Noise: 140µV
Load Regulation (%): 1%
Line Regulation: 1.5mV
Package Style:  SOIC-8
Mounting Method: Surface Mount
Features & Applications
The LM2931 series consists of positive fixed and adjustable output low dropout (LDO) linear voltage regulators that are specifically designed to maintain proper regulation with an extremely low input-to-output voltage differential. These devices are capable of supplying output currents in excess of 100 mA and feature a low bias current of 0.4 mA at 10 mA output.

This series also includes internal current limiting, thermal shutdown, and additionally, is able to withstand temporary power-up with mirror-image insertion. Due to the low dropout voltage and bias current specifications, the LM2931 series is ideally suited for battery powered industrial and consumer equipment where an extension of useful battery life is desirable. The 'C' suffix adjustable output regulators feature an output inhibit pin which is extremely useful in microprocessor-based systems.


  • Input−to−Output Voltage Differential of < 0.6 V @ 100 mA
  • Output Current in Excess of 100 mA
  • Low Bias Current
  • 60 V Load Dump Protection
  • −50 V Reverse Transient Protection
  • Internal Current Limiting with Thermal Shutdown
  • Temporary Mirror−Image Protection
  • Ideally Suited for Battery Powered Equipment
  • Economical 5−Lead TO−220 Package with Two Optional Leadforms
  • Available in Surface Mount SOP−8, D2PAK and DPAK Packages
  • High Accuracy (±2.5%) Reference (LM2931AC) Available
  • Pb−Free Packages are Available
  • NCV Prefix for Automotive and Other Applications Requiring Site and Control Changes


  • Battery Powered Consumer Products
  • Hand−held Instruments
  • Camcorders and Cameras
Pricing Section
Minimum Order:
Multiple Of:
Factory Stock:Factory Stock:
Factory Lead Time:
10 Weeks
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