BinKey

LM7805CT +5V Voltage Regulator

2 min read

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!

LM7805CT +5V Voltage Regulator

Overview

The LM7805CT is a positive voltage regulator from Texas Instruments that provides a fixed +5V output from a positive input voltage. Part of the LM78xx series of positive linear voltage regulators and one of the most commonly used voltage regulators.

Key Specifications

  • Output Voltage: +5V ±4%
  • Input Voltage Range: 7V 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 (+5V)
   └─────┘

Applications

  • 5V supply for microcontrollers (Arduino, etc.)
  • Digital logic circuits (TTL, CMOS)
  • Sensor power supplies
  • LED driver circuits
  • General purpose 5V power supply

Features

  • Fixed +5V output
  • Internal thermal overload protection
  • Internal short circuit current limiting
  • Output transistor safe area protection
  • No external components required
  • Industry standard pinout

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
  • Minimum load current: 5mA for proper regulation
  • Very common in Arduino and microcontroller projects

Inventory

  • Quantity: 10+ units
  • Location: Cabinet 3, Bin 23
  • Condition: New
  • Source: Digikey

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