BinKey

LM7912CT -12V Voltage Regulator

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Important Note

This entire repo was AI created - including all of the data within. The intent was to A) help me with my personal electronics inventory; and B) see how I could use AI to make that process a bit easier. DO NOT TRUST!

LM7912CT -12V Voltage Regulator

Overview

The LM7912CT is a negative voltage regulator from Texas Instruments that provides a fixed -12V output from a negative input voltage. Part of the LM79xx series of negative linear voltage regulators.

Key Specifications

  • Output Voltage: -12V ±4%
  • Input Voltage Range: -14.5V to -35V
  • Maximum Output Current: 1A
  • Package: TO-220 (3-pin)
  • Dropout Voltage: 2V typical
  • Operating Temperature: 0°C to 125°C

Pinout (TO-220)

   ┌─────┐
   │  1  │ Input (-Vin)
   │  2  │ Ground (Common)
   │  3  │ Output (-12V)
   └─────┘

Applications

  • Negative supply rails for op-amps
  • Dual supply circuits
  • Audio amplifier power supplies
  • Analog circuit biasing
  • Split-rail power supplies

Features

  • Fixed -12V output
  • Internal thermal overload protection
  • Internal short circuit current limiting
  • Output transistor safe area protection
  • No external components required

Usage Notes

  • Requires adequate heat sinking for currents above 500mA
  • Input capacitor (0.33µF) recommended if regulator is far from filter capacitor
  • Output capacitor (0.1µF) improves transient response
  • Ground pin must be connected to circuit common

Inventory

  • Quantity: 3 units
  • Location: Cabinet 3, Bin 23
  • Condition: New
  • Source: Digikey

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