Original L7805 Positive Voltage Regulator

A LM7805 Voltage Regulator is a voltage regulator that outputs +5 volts.

L7805 Regulator Positive Voltage Regulator

7805 Regulator Features



5V Positive Voltage Regulator

Minimum Input Voltage is 7V

Maximum Input Voltage is 25V

Operating current(IQ) is 5mA

Internal Thermal Overload and Short circuit current limiting protection is available.

Junction Temperature maximum 125 degree Celsius

Voltage regulato are very common in electronic circuits. They provide a constant output voltage for a varied input voltage. In our case the 7805 IC is an iconic regulator IC that finds its application in most of the projects. The name 7805 signifies two meaning, “78” means that it is a positive voltage regulator and “05” means that it provides 5V as output. So our 7805 will provide a +5V output voltage.The output current of this IC can go up to 1.5A. But, the IC suffe from heavy heat loss hence a Heat sink is recommended for projects that consume more current. For example if the input voltage is 12V and you are consuming 1A, then (12-5) * 1 = 7W. This 7 Watts will be dissipated as heat.



L7805 Regulator Positive Voltage Regulator

7805 as +5V Voltage Regulator

This is a typical application circuit of the 7805 IC. We just need two capacito of vale 33uf and 0.1uf to get this IC working.



The input capacitor 0.33uF is a ceramic capacitor that deals with input inductance problem and the output capacitor 0.1uF is also a ceramic capacitor that adds to the stability of the circuit. These capacito should be placed close to the terminals for them to work effectively. Also they should be of ceramic type, since ceramic capacito are faster than electrolytic.