The LM7912 is a fixed output negative voltage regulator from the LM79xx series, available in a TO-220 package. It provides a stable -12V output, making it ideal for applications requiring a negative voltage. The IC is designed to supply up to 1A of average output current and 2.2A peak output current, with thermal overload protection and short circuit current limiting to safeguard against faulty conditions.
For proper operation, the LM7912 requires two filter capacitors—one at the input and one at the output. These capacitors should be placed as close to the IC as possible for optimal performance. The IC is designed to handle input voltages between -14.5V and -27V, with an input voltage 2V to 3V higher than the output voltage for stable operation.
Fixed Output Voltage: -12V DC
Package: TO-220
Peak Output Current: 2.2A
Average Output Current: Up to 1A
Input Voltage Range: -14.5V to -27V
Thermal Overload Protection: Protects the IC under extreme conditions
Short Circuit Current Limiting: Enhances safety
Low Quiescent Current: Efficient power consumption
Filter Capacitors Required: Solid tantalum or electrolytic capacitors
Heat Sink Required: To maximize output load capacity
1x Heat Sink Compound
5x LM7912 Voltage Regulators
5x Heat Sinks (2 x 1.5 cm)
5x Screws
Negative Voltage Power Supplies
Voltage Conversion Circuits
Charger Circuits
Regulated Power for Analog Devices
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