The AN79N12T is a 3-Terminal Negative Voltage Regulator manufactured by Panasonic. It is designed to provide a stable and regulated negative voltage output for various electronic circuits.

Applications

• Power supplies for operational amplifiers (op-amps).
• Voltage regulation in instrumentation equipment.
• Negative voltage bias for transistors and integrated circuits.
• Power supplies for data acquisition systems.
• Industrial control systems.
• Linear power supplies.

Features

• Fixed Negative Output Voltage: Provides a stable -12V output.
• Internal Short-Circuit Current Limiting: Protects the regulator and connected circuits from damage due to overcurrent conditions.
• Thermal Overload Protection: Shuts down the regulator if the internal temperature exceeds a safe limit, preventing damage.
• High Ripple Rejection: Provides a clean and stable output voltage, even with noisy input voltage.
• TO-220 Package: Allows for easy mounting and heat sinking.
• Wide Operating Temperature Range: Ensures reliable operation in various environments.

Benefits

• Stable Negative Voltage: Provides a reliable and consistent negative voltage for sensitive electronic circuits.
• Protection Features: Short-circuit and thermal overload protection enhance system reliability and prevent damage.
• Simplified Design: Requires minimal external components, reducing complexity and cost.
• Easy to Use: Simple three-terminal configuration simplifies integration into existing circuits.
• Improved System Performance: High ripple rejection ensures a clean and stable output voltage, improving performance of connected circuits.

Additional Details

The AN79N12T typically requires a minimum input voltage slightly more negative than -12V to operate correctly. The maximum input voltage is generally around -35V. It can supply a continuous output current of up to 1A with adequate heat sinking. The TO-220 package allows for efficient heat dissipation, ensuring reliable operation at higher currents. This regulator is widely used in applications requiring a stable and regulated negative voltage and offers robust protection features for added reliability.