LM7815 Positive Voltage Regulator

LM7815 is a fixed-voltage integrated-circuit voltage regulator designed for a wide range of applications. 7805 voltage regulator provides 15V Positive voltage as output to provide a convenient power source for most TTL components. 7815 voltage regulator is available in TO-220, TO-220FP, TO-3, and D2PAK packages.

Voltage regulators are very common in electronic circuits. They provide a constant output voltage for a varied input voltage. The name 7815 signifies two meanings, “78” means that it is a positive voltage regulator and “15” means that it provides 15V as output. So our 7805 will provide a +15V output voltage.

The output current of this IC can go up to 1.5A. But the IC suffers from heavy heat loss, hence a Heat sink is recommended for projects that consume more current. For example, if the input voltage is 20V and you are consuming 1A, then (20-5) * 1 = 15W. This 15 Watts will be dissipated as heat.