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Voltage Regulator ICsCompatible

LM7805 5 V Regulator – Pack of 5

Fixed 5 V regulator for powering microcontrollers, sensors and logic from 7–25 V. Built-in current limiting and thermal shutdown. TO-220 with a tab for a heatsink.

Part Number
LM7805
Type
Fixed positive linear regulator
Output Voltage
5 V (4.8–5.2 V)
Output Current
Up to 1 A
Input Voltage
7–25 V (35 V max)
Dropout Voltage
About 2 V
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Specifications

Manufacturer Part Number
LM7805
Part Number
LM7805
Type
Fixed positive linear regulator
Output Voltage
5 V (4.8–5.2 V)
Output Current
Up to 1 A
Input Voltage
7–25 V (35 V max)
Dropout Voltage
About 2 V
Protection
Current limit, thermal shutdown
Package
TO-220
Pinout (front)
IN – GND – OUT
Pack Quantity
5

Electrical characteristics

Absolute maximum ratings

Going above these limits can permanently damage the part. Design with a safety margin and use the typical values below for normal operation.

  • Input voltageVI
    Max rating
    35 V
  • Operating junction temperatureTJ
    Max rating
    0 to +125 °C

Typical characteristics

  • Output voltageVO
    Condition: 5 mA ≤ IO ≤ 1 A, 7.5 V ≤ VI ≤ 20 V
    Min
    4.8 V
    Typ
    5.0 V
    Max
    5.2 V
  • Dropout voltageVDO
    Condition: IO = 1 A
    Min
    —
    Typ
    2.0 V
    Max
    —

Downloads

Description

Feed it 9 V or 12 V and get a steady 5 V out – the simplest way to power 5 V circuits from a battery or adapter. It protects itself against short circuits and overheating.

Features

  • Fixed 5 V output (4.8–5.2 V)
  • Output current up to 1 A (with a suitable heatsink)
  • Input 7–25 V recommended (35 V absolute maximum)
  • Internal current limiting and thermal shutdown
  • TO-220 package

Pinout

Front (printed side) towards you, legs down: Input – GND – Output. The metal tab is GND.

How to use

Add a 0.33 µF capacitor on the input and a 0.1 µF capacitor on the output, close to the pins. The regulator turns the extra voltage into heat: at 12 V in and 0.5 A out it dissipates (12 − 5) × 0.5 = 3.5 W – that needs a heatsink. For higher currents or efficiency, use a buck converter such as the LM2596.

Package includes

5 × LM7805 regulators