onsemi

KA278R09CYDTU

KA278R09CYDTU Description

The KA278R09CYDTU is a linear voltage regulator designed by onsemi, offering a fixed output voltage of 9V and a maximum output current of 2A. This regulator is housed in a TO220F-4L package, making it suitable for through-hole mounting. Despite being marked as obsolete, it remains a reliable choice for applications requiring a stable power supply. The regulator features a maximum input voltage of 35V and a dropout voltage of 0.5V at 2A, ensuring efficient operation even under varying input conditions. Its quiescent current is a low 10 mA, contributing to minimal power consumption during standby. The KA278R09CYDTU also includes comprehensive protection features such as over-current, over-temperature, over-voltage, and short-circuit protection, enhancing its reliability and durability. The product is REACH unaffected and classified under ECCN EAR99 and HTSUS 8542.39.0001, with a moisture sensitivity level (MSL) of 1, indicating it is suitable for unlimited exposure to moisture.

KA278R09CYDTU Features

• Fixed Output Voltage: The KA278R09CYDTU provides a stable 9V output, ensuring consistent power supply to connected devices.
• High Output Current: Capable of delivering up to 2A, this regulator can support a wide range of applications requiring higher current loads.
• Low Dropout Voltage: With a maximum dropout voltage of 0.5V at 2A, the regulator maintains efficiency even with input voltages close to the output voltage.
• Comprehensive Protection: Features over-current, over-temperature, over-voltage, and short-circuit protection, safeguarding both the regulator and connected circuits.
• Low Quiescent Current: A quiescent current of just 10 mA minimizes power consumption during non-operational periods.
• Through-Hole Mounting: The TO220F-4L package is ideal for through-hole mounting, providing robust mechanical stability and ease of installation.
• Moisture Resistance: An MSL rating of 1 (unlimited) ensures the regulator can withstand moisture exposure without degradation.

KA278R09CYDTU Applications

The KA278R09CYDTU is well-suited for a variety of applications where a stable and reliable power supply is essential. Its fixed 9V output and 2A current capability make it ideal for powering analog circuits, industrial control systems, and consumer electronics. The low dropout voltage ensures efficient operation in environments with fluctuating input voltages, such as automotive and renewable energy applications. The comprehensive protection features make it a reliable choice for applications where robustness and durability are critical, such as in medical devices and telecommunications equipment. Additionally, its through-hole mounting and moisture resistance make it suitable for industrial and outdoor applications where environmental conditions can be harsh.

Conclusion of KA278R09CYDTU

The KA278R09CYDTU is a robust and reliable linear voltage regulator designed for applications requiring a stable 9V output and up to 2A of current. Despite its obsolete status, its low dropout voltage, comprehensive protection features, and low quiescent current make it a valuable component for various electronic systems. Its through-hole mounting and moisture resistance further enhance its versatility and reliability. For designers and engineers seeking a dependable power supply solution, the KA278R09CYDTU remains a viable option, offering a balance of performance and durability in a compact and rugged package.