Voltage Regulator 7805

The 7805 belongs to the family of the 78xx (sometimes also LM78xx or L78xx) is a voltage regulator, which provides a fixed positive voltage of 5 Volts at the output.

A 78xx voltage regulator. (Enlarge)

Circuit symbol 78xx voltage regulator. Symbol Description Value Type Fixed voltage regulator Vin Input Voltage Max. 35 V Vout Output voltage 5 V Iout Output current Max. 1 A VDO Drop-Out Voltage 2,0 V Casing TO220 Technical data of a 7805

Notes...

• Voltage regulator for fixed negative voltages can be found in the 79xx-family.

You find a detailed description of how to connect the 78xx in the topic  "Voltage Regulator".