The LM79L12 is a three-terminal negative voltage regulator from Boca Semiconductor Corporation. It provides a fixed -12V output voltage and is designed for a wide range of applications. This regulator is commonly used in applications requiring a stable negative voltage source.

Applications:

• Local on-card regulation
• Negative voltage power supplies for op-amps
• Microprocessor power supplies
• Instrumentation
• Linear regulators

Features:

• Fixed output voltage: -12V
• Output current: Up to 100mA
• Internal short-circuit current limiting
• Thermal overload protection
• No external components required for basic operation

Benefits:

• Stable and regulated negative voltage output
• Protection against short circuits and overloads
• Simplified circuit design due to minimal external components
• Improved system reliability due to built-in protection features
• Cost-effective solution for negative voltage regulation

Technical Specifications:

• Output Voltage: -12V ±5%
• Input Voltage: -14.5V to -30V
• Output Current: 100mA
• Line Regulation: 0.07%/V (typical)
• Load Regulation: 0.04%/mA (typical)
• Operating Temperature: 0°C to +125°C

The LM79L12 is a simple and reliable negative voltage regulator suitable for applications requiring a fixed -12V supply. The internal protection features ensure safe operation under various fault conditions. Its ease of use and minimal external component requirements make it a popular choice for both hobbyists and professional engineers. The device is typically available in a TO-92 package for easy through-hole mounting.