onsemi

KA78M12TU

KA78M12TU Description

The KA78M12TU is a fixed-output linear regulator designed for applications requiring a stable 12V output at up to 500mA. Manufactured by onsemi, this regulator is part of the Power Management (PMIC) category and is housed in a TO220-3 package, suitable for through-hole mounting. Despite its obsolete status, the KA78M12TU remains a reliable choice for power management solutions.

KA78M12TU Features

• Fixed Output Voltage: The KA78M12TU provides a stable 12V output, ensuring consistent power delivery to connected devices.
• High Input Voltage Range: With a maximum input voltage of 35V, this regulator can handle a wide range of input voltages, making it versatile for various applications.
• Low Dropout Voltage: The dropout voltage is a maximum of 2V at 500mA (typical), allowing the regulator to maintain efficiency even at lower input voltages.
• Low Quiescent Current: The regulator operates with a quiescent current of 6mA, minimizing power consumption during operation.
• High PSRR: The power supply rejection ratio (PSRR) is 80dB at 120Hz, ensuring minimal noise and ripple in the output voltage.
• Protection Features: The KA78M12TU includes over-temperature and short-circuit protection, enhancing reliability and safety.
• Wide Operating Temperature Range: The regulator operates reliably within a temperature range of 0°C to 125°C, making it suitable for both ambient and elevated temperature environments.
• Moisture Sensitivity Level: With an MSL of 1 (Unlimited), the KA78M12TU is suitable for a wide range of manufacturing conditions without the need for special handling.

KA78M12TU Applications

The KA78M12TU is ideal for applications requiring a stable 12V power supply, such as:

• Consumer Electronics: Powering devices like radios, amplifiers, and small appliances.
• Industrial Equipment: Providing stable power to control systems, sensors, and actuators.
• Telecommunications: Supplying power to low-power communication modules and peripherals.
• Automotive: Suitable for in-vehicle electronics where a stable 12V supply is necessary.

Conclusion of KA78M12TU

The KA78M12TU is a robust and reliable linear regulator offering a fixed 12V output with up to 500mA current capability. Its low dropout voltage, high PSRR, and protection features make it a standout choice in power management solutions. Despite being marked as obsolete, the KA78M12TU remains a viable option for applications requiring a stable and efficient power supply. Its wide operating temperature range and moisture sensitivity level further enhance its versatility and reliability. For applications needing a dependable 12V power source, the KA78M12TU is an excellent choice.