The TS79L09CSRL is a three-terminal negative voltage regulator from Taiwan Semiconductor designed to provide a stable -9V DC output. As a member of the TS79L series, it offers a low-current negative fixed voltage output, often used in applications needing a small, regulated negative voltage supply for sensitive electronic components.

Applications

• Low-Power Operational Amplifier Supplies: Providing a stable -9V supply for operational amplifiers in low-power applications.
• Sensor Power Supplies: Regulating negative voltage for sensors in measurement and control systems.
• Portable Electronic Devices: Supplying a regulated negative voltage in battery-powered devices.
• Small Signal Conditioning Circuits: Ensuring a stable negative voltage for low-level analog signal processing.
• Microcontroller Peripherals: Powering specific peripherals that require a negative voltage rail.

Features

• Fixed -9V Output: Delivers a constant -9V output voltage.
• Internal Short-Circuit Current Limiting: Protects the regulator and connected components from short circuits.
• Thermal Overload Protection: Shuts down the regulator when the internal temperature exceeds safe limits.
• Low Quiescent Current: Efficient operation for battery-powered applications.
• Small Package: Suitable for compact designs and portable devices.

Benefits

• Stable Negative Voltage: Provides a consistent and reliable negative voltage for connected devices.
• Circuit Protection: Overload protection enhances the longevity and reliability of the regulator and connected circuits.
• Low Power Consumption: Suitable for battery-powered and energy-efficient applications.
• Compact Size: Allows for integration into space-constrained designs.

The TS79L09CSRL is typically available in a small package like SO-8 or SOT-89. It is a reliable option for low-current negative voltage regulation. To achieve proper regulation, the input voltage should be at least a few volts more negative than -9V. Due to the low current nature, this device generally does not need a heatsink.