onsemi

KA7809ERTM

KA7809ERTM Description

The KA7809ERTM is a fixed-output linear regulator designed by onsemi, a leading manufacturer in the power management sector. This regulator is part of the KA7809 series and is housed in a DPAK package, making it suitable for surface-mount applications. It provides a stable 9V output voltage with a maximum input voltage of 35V and is capable of delivering up to 1A of output current. Despite being marked as obsolete, the KA7809ERTM remains a reliable choice for applications requiring a fixed positive output configuration.

KA7809ERTM Features

The KA7809ERTM offers several notable features that enhance its performance and reliability. It has a typical dropout voltage of 2V at 1A, ensuring efficient operation even at lower input-to-output voltage differentials. The regulator boasts a quiescent current of 8 mA, which is relatively low, contributing to its energy efficiency. Additionally, it features a high power supply rejection ratio (PSRR) of 71dB at 120Hz, which helps in filtering out noise from the input supply.

The KA7809ERTM also includes essential protection features such as over-temperature and short-circuit protection, ensuring robustness and reliability in various operating conditions. Its moisture sensitivity level (MSL) is rated at 1 (unlimited), making it suitable for a wide range of manufacturing environments. The regulator is REACH unaffected, adhering to stringent environmental and safety regulations.

KA7809ERTM Applications

The KA7809ERTM is ideal for a variety of applications where a stable 9V output is required. Its compact DPAK package and surface-mount design make it suitable for space-constrained environments. It is commonly used in consumer electronics, industrial control systems, and automotive applications where a reliable power supply is crucial.

Specific use cases include powering small electronic devices, providing stable voltage to microcontrollers, and serving as a secondary power source in larger systems. The KA7809ERTM's ability to handle up to 1A of current makes it suitable for applications requiring moderate power delivery, such as LED drivers or small motors.

Conclusion of KA7809ERTM

In summary, the KA7809ERTM is a versatile and reliable linear regulator with a fixed 9V output, designed for surface-mount applications. Its features, including low dropout voltage, high PSRR, and built-in protection mechanisms, make it a robust choice for various power management needs. Despite its obsolete status, the KA7809ERTM continues to offer a stable and efficient power solution, making it a valuable component in the onsemi portfolio.