MC34978AESR2

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

MC34978AESR2 belongs to Power Management Integrated Circuits (PMIC) and more specifically to Specialized PMIC category. It offers protection and monitoring capabilities in many applications including automotive applications. As an extremely low-profile device, MC34978AESR2 is designed to fit space-constrained environments.

Application Field

MC34978AESR2 offers a great deal of protection and monitoring capabilities in various application areas, such as automotive applications. MC34978AESR2 has an integrated AEC-Q100-qualified, 6-A total-current-limit protection circuit that is used to protect automotive system processors from over-current loads and events. Further, the device is equipped with an integrated watchdog timer and Power-on Reset for protection against microprocessor malfunction or system lockup. Other features such as Reverse Voltage protection and Over-Temperature protection also ensure system safety and stability.

Besides automotive applications, MC34978AESR2 is also suitable for industrial, home automation, computing and lighting applications to provide power protection, distribution, and monitoring. It is widely used in motor control applications such as in remote control models and robotic systems, since it offers a powerful, yet cost-effective solution.

Working Principle

Being an intelligent, low-dropout, and low profile PMIC, MC34978AESR2 offers superior output voltage accuracy, transient response, and noise immunity for a variety of system power needs. It uses a three-terminal regulator topology to provide a low-dropout voltage to the output through an internal series pass elements. It consists of a voltage reference, an amplifier, a series pass element and a feedback network. These components are arranged around a core of isolation capacitors which are used to isolate the output voltage from the regulating voltage.

The voltage reference establishes the output voltage of the series pass elements. An amplifier is connected to the reference to form a feedback loop, with the series pass element in the feedback loop being adjusted and monitored until the set voltage is reached. The feedback network senses the output and adjusts the series pass element to hold the output voltage at the desired value. This regulating technique is known as a "regulation" system, and is an efficient and reliable way of maintaining a constant output voltage.

Conclusion

The MC34978AESR2 is a powerful, low profile PMIC, which provides superior output voltage accuracy, transient response, and noise immunity for a variety of system power needs. It has the ability to protect and monitor in many application areas such as automotive, industrial, home automation, computing and lighting. Moreover, its features such as Reverse Voltage protection and Over-Temperature protection, as well as the integrated watchdog timer and Power-on Reset, strongly supports reliability and system safety in any application.

The specific data is subject to PDF, and the above content is for reference