Voltage Regulator L7912

• LM7912�belongs to the family of Voltage regulators. The name “79” indicates negative and the term “12” indicates the voltage. So “7912” means that this IC will regulate a negative 12V for your projects. You can also check on 78 series for positive voltage regulators.
• When you are designing an analog circuit, the circuit might need negative voltage either as a power source or as a reference voltage. In both cases, LM7912 will be an ideal choice when you need a negative 12V. The output current of this IC is upto 1A, however with appropriate heat sink, the datasheet says that a peak current of 2.2A can be achieved through this IC.

Pinout Configuration

• Pin 1(Gnd) Connected to ground
• Pin 2(IN) Unregulated Input Voltage
• Pin 3(OUT) Outputs Regulated -12V

Applications

• Constant -12V output regulator to use as power or reference voltage for analog and digital circuits.
• Current Limiter for certain applications
• Regulated Dual Power Supplies
• Output Polarity-Reversal-Protection Circuit
• Voltage step down circuits
• Motor Drivers
• Battery Charger Circuits
• Solar Power Supply Circuits