The TS79L12CS is a three-terminal negative voltage regulator manufactured by Taiwan Semiconductor. This regulator is designed to provide a stable -12V DC output voltage. It is part of the TS79L series of low-current negative voltage regulators and is commonly employed in electronic circuits to maintain a consistent negative power supply, particularly in applications where both positive and negative voltage rails are required.

Applications

• Operational Amplifier Power Supplies: Providing a stable -12V supply for operational amplifiers and associated circuits.
• Analog Circuitry: Ensuring a steady negative voltage source for analog signal processing and conditioning circuits.
• Data Acquisition Systems: Stabilizing voltage for data acquisition modules and instruments requiring negative voltage rails.
• Instrumentation and Measurement Equipment: Providing accurate negative voltage for precise readings in test equipment and measurement devices.
• Portable Electronic Devices: Delivering a regulated negative voltage in battery-powered and mobile applications.

Features

• Fixed -12V Output: Delivers a constant -12V output voltage, simplifying design and reducing the need for external components.
• Internal Short-Circuit Current Limiting: Protects the regulator and connected circuitry from damage caused by short circuits.
• Thermal Overload Protection: Shuts down the regulator automatically when the internal temperature exceeds safe limits, preventing thermal damage.
• Low Quiescent Current: Efficient operation, making it suitable for battery-powered applications.
• Small Package: Available in compact packages for use in space-constrained environments.

Benefits

• Stable Negative Voltage Supply: Provides a consistent and reliable negative voltage to connected devices, minimizing the impact of voltage fluctuations.
• Enhanced Circuit Protection: Overload protection features improve the reliability and longevity of both the regulator and connected circuits.
• Low Power Consumption: Minimizes power usage, making it ideal for portable and energy-efficient applications.
• Compact Size: Allows for integration into small form-factor designs and portable devices.

The TS79L12CS is commonly packaged in small form factors such as SO-8 or SOT-89. It's a reliable solution for low-current negative voltage regulation. An input voltage a few volts more negative than -12V is required for proper regulation. Due to the low current characteristics, a heatsink is typically not necessary.