BU4215F-TR

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PMIC - Supervisors play an essential role for ensuring the overall system stability and system-level performance. The BU4215F-TR is a type of PMIC - Supervisors, which is a low-power, high-performance supervisor IC with independent input/output voltage rails. It is designed to keep microprocessors, microcontrollers, and ASIC/FPGAs systems running safely, as well as to protect peripheral components from excess power. Thus, it can be applied to a wide range of applications, from telecom and consumer electronics to industrial and automotive systems.

BU4215F-TR Application Fields

The BU4215F-TR PMIC - Supervisors are mainly used in power supply systems, including Li-battery, AC/DC, microprocessor and microcontroller systems, as well as ASIC/FPGA-based systems. In Li-battery applications, BU4215F-TR provides voltage supervision and over-current/over-temperature protection. It can detect whether battery voltage is abnormal and cut off load power supply automatically, which ensures the safety of the system. Also, it includes low voltage reset warning function, and low battery voltage warning function.The BU4215F-TR can be used in AC/DC system, e.g. triggered by the power failure or supply interruption, it can turn off the load automatically and send warning for the system. In addition, it can also monitor over-current/over-temperature and provide cut-off protection for the system.In microprocessor/microcontroller-based systems, BU4215F-TR can be applied as synchronous reset supervisor, providing monitoring, supervision and reset functions for system components like CPUs. It can detect abnormal voltage, temperature and other parameters of system, providing protection and reset when the system is in trouble.BU4215F-TR PMIC - Supervisors are also widely used in ASIC/FPGA systems. It mainly provides power-on reset, watchdog timer, reset signal output and reset warning etc. functions. In order to ensure system stability, it can supervise over-voltage, under-voltage, over-temperature and over-current etc. and provide reset when abnormality occurs.

BU4215F-TR Working Principle

BU4215F-TR consists of a Sequential Supervisor and a voltage monitor, which are the core components of the BU4215F-TR PMIC - Supervisors with independent input/output voltage rails.The Sequential Supervisor provides the reset signal for the system, and checks the status of supply voltage and peripheral temperatures, as well as the reset signal of peripheral circuits. When the supply voltage is too low or too high, or temperature is out of its operation range, reset signal is output in order to reset the system.The voltage monitor works as a background monitor for the system. It monitors the supply voltage, as well as the reset signal of the peripheral circuits. When abnormality occurs, the voltage monitor outputs the reset signal in order to reset the system. The BU4215F-TR PMIC - Supervisors also offer a unique ‘Lock-in’ feature which prevents system operation in the event of the supervisor voltage not exceeding a specific level, ensuring system stability and safety.

Conclusion

BU4215F-TR PMIC - Supervisors are widely used in power systems, providing power-on reset, watchdog timer, reset signal output, reset warning functions and voltage supervision etc. reset control and over-current/temperature protection for systems. It can also provide background monitoring for the system and output reset signal for abnormal voltage, temperature or other parameters. Overall, the BU4215F-TR PMIC - Supervisors play an essential role for system safety and performance.

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