Texas Instruments

UA78M12CKTPR

UA78M12CKTPR Description

The UA78M12CKTPR is a linear voltage regulator designed by Texas Instruments, featuring a fixed output voltage of 12V and a maximum output current of 500mA. This regulator is designed for surface mount applications and is housed in a Tape & Reel (TR) package, making it suitable for automated assembly processes. The device operates within an input voltage range up to 30V and is capable of maintaining regulation with a dropout voltage of 2V at 350mA. It is designed to operate within a temperature range of 0°C to 125°C, ensuring reliable performance in a variety of environmental conditions.

UA78M12CKTPR Features

• Fixed Output Voltage: The UA78M12CKTPR provides a stable 12V output, making it ideal for applications requiring a consistent power supply.
• High Input Voltage Range: With a maximum input voltage of 30V, this regulator can handle a wide range of input voltages, providing flexibility in power supply design.
• Low Dropout Voltage: The 2V dropout voltage at 350mA ensures efficient power conversion, even when the input voltage is close to the output voltage.
• Protection Features: Over-current, over-temperature, and short-circuit protection features safeguard the regulator and connected circuits from damage.
• High Power Supply Rejection Ratio (PSRR): The 80dB PSRR at 120Hz minimizes the impact of input voltage fluctuations on the output voltage, ensuring clean and stable power delivery.
• Compliance and Reliability: The regulator is REACH unaffected and RoHS3 compliant, ensuring it meets environmental and safety standards. The Moisture Sensitivity Level (MSL) of 1 (Unlimited) makes it suitable for a wide range of manufacturing environments.

UA78M12CKTPR Applications

The UA78M12CKTPR is well-suited for a variety of applications where a stable 12V power supply is required. Some specific use cases include:

• Consumer Electronics: Ideal for powering devices such as portable audio equipment, where a stable and efficient power supply is crucial.
• Industrial Control Systems: Provides reliable power for control modules and sensors in industrial environments, ensuring consistent operation.
• Telecommunications: Suitable for powering communication modules and small devices in telecom infrastructure.
• Medical Devices: Can be used in low-power medical equipment where stable voltage regulation and compliance with safety standards are essential.

Conclusion of UA78M12CKTPR

The UA78M12CKTPR from Texas Instruments is a robust linear voltage regulator that offers a stable 12V output with a maximum current of 500mA. Its low dropout voltage, high PSRR, and comprehensive protection features make it a reliable choice for a variety of applications. While it is marked as obsolete, its performance characteristics and compliance with industry standards ensure it remains a viable option for existing designs. For new projects, engineers may consider its features and benefits when selecting a voltage regulator, especially in applications requiring a fixed 12V output and efficient power conversion.