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LDO Regulator, 100 mA, Ultra-High PSRR

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LM2931ACD2TR4G General Description

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. Designed primarily to survive in the harsh automotive environment, these devices will protect all external load circuitry from input fault conditions caused by reverse battery connection, two battery jump starts, and excessive line transients during load dump. 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.

ON Semiconductor, LLC Inventory

Key Features

  • 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
  • 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, D
  • 2
  • PAK and DPAK Packages
  • High Accuracy (+/-2%) Reference (LM2931AC) Available
ON Semiconductor, LLC Original Stock


  • Battery Powered Consumer Products
  • Handheld Instruments
  • Automotive
ON Semiconductor, LLC Inventory


Status Active Package Type TO-220-3
Case Outline 221AB MSL Temp (°C) 0
Container Type TUBE


Shipping Method

Our products are mainly transported and delivered by DHL, FedEx, UPS and other logistics partners on site -- Available to 200+ countries.

Delivery Time

The delivery time is usually within 2-7 days, depending on the logistics provider and the area of delivery.

The following are the estimated delivery times of some logistics service providers.

  • DHL

  • Fedex

  • UPS

  • EMS

  • Registered Air Mail


We accept TT prepayment (bank transfer), paypal, credit cards, Western Union, Money Gram.

Checks and other instruments are not supported to pay for orders and customers are required to pay all possible fees, including sales tax,
customs fees, etc.

  • Wire Transfer

  • Paypal

  • Credit Card

  • Western Union

  • Money Gram


Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.

We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.


AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.
  • ESD


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LM2931ACD2TR4G Datasheet PDF

Preliminary Specification LM2931ACD2TR4G PDF Download

LM2931ACD2TR4G PDF Preview

Buying Guide

  • What is the lifespan of LM2931ACD2TR4G?

    The lifespan of LM2931ACD2TR4G depends on various factors such as the quality of materials used, operating conditions, and the manufacturer's recommended usage time. The datasheet provided by the manufacturer specifies the expected lifespan of the product.

  • Where can I find the full specification of LM2931ACD2TR4G?

    You can find it with PDF Datasheet for LM2931ACD2TR4G on this page. If it is not available, you can contact Avaq at [email protected] to inquire about the Datasheet for this part.

  • How to check the quality of LM2931ACD2TR4G?

    Avaq has separate quality services with common quality inspection equipment for testing items, you can also fill out a sample form, our team will get in touch with you within 24 HOURS.

  • Can I purchase samples for testing?

    Avaq offers free samples for customers to test. This can often help you determine whether the chip or component meets your needs.

  • Where can I check the delivery after the order is completed?

    Once the order is completed, you will receive an order confirmation email containing a tracking number from AVAQ, then you can track the delivery by yourself.

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