S-80816CNY-B2-U

PMIC (Power Management Integrated Circuits) or supervisors are integrated circuits that perform regulating, monitoring and protection functions from an electrical supply power source. To accommodate a myriad of power management needs, PMICs come in various categories and configurations. S-80816CNY-B2-U is one such example and it belongs to the supervisory family.

S-80816CNY-B2-U is a power supervisor integrated circuit used for protecting a system in case of power fluctuations or an unexpected power failure. It has seven protection function blocks including an Over Voltage Protection (OVP) block, Under Voltage Protection (UVP) block, Brown-Out Protection (BOP) block, Power-On Reset (POR) block, Voltage Monitor (VMON) block and two independent Watchdog blocks.

The main application of the S-80816CNY-B2-U supervisor is in monitoring the main power supply of an engineered system. It can check the main power supply continuously and determine if the power is within specified ranges. It does this by comparing the voltage of the main power supply to two customized thresholds. One is for the OVP block and the other for the UVP block.

If the voltage drops below the lower OVP threshold or rises above the upper UVP threshold, the S-80816CNY-B2-U will activate certain protection mechanisms and forces a reset. This reset can be a power-on reset (POR) or brown-out (BOP) reset. It will also notify the microcontroller of a possible fault, allowing the microcontroller to adjust accordingly.

In addition to monitoring the main power supply, the S-80816CNY-B2-U can also monitor multiple power rails with its Voltage Monitors (VMON) block. The VMON block has the ability to check and compare the voltage levels of three input power rails with three independent voltage thresholds. Each rail has its own adjustable threshold and can be used to detect any sudden changes in the rail voltages. However, unlike the OVP and UVP blocks, noprotection mechanisms are activated if the voltage is outside the specified range.

Finally, the S-80816CNY-B2-U also has two independent watchdog blocks which monitor the system to keep it from freezing. The watchdog blocks use two independent clock sources and can issue an interrupt or reset event to the microcontroller in cases of system malfunction or freeze. This allows for fast response times in case of errors or other unexpected system events.

In short, the S-80816CNY-B2-U supervisor IC is designed to monitor, protect and control power supply fluctuations throughout a system. Its seven protection blocks and two independent watchdog blocks form a dependable and reliable power management system that can secure a system from any unexpected events or malfunctions.