LM7905 Negative Voltage Regulator

Rs.25
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Description

Voltage regulators are very common in electronic circuits. They provide a constant output voltage for a varied input voltage. In our case the 7905 IC is an negative 5V regulator, meaning it provides -5V as output. The name 7905 signifies two meaning, “79” means that it is a negative voltage regulator and “05” means that it provides 5V as output. So our 7905 will provide a -5V 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 12V and you are consuming 1A, then (12-5) * 1 = 7W. This 7 Watts will be dissipated as heat.

7905 Regulator Features

  • 5V Negative Voltage Regulator
  • Output Voltage: -5V
  • Output  Current: 1.5A
  • 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
  • Available in TO-220 and KTE package

Alternative Regulator ICs

LM7806, LM7809, LM7812, LM317LM7805LM7912, LM117V33, XC6206P332MR.