S-80142BLPF-JE3TFG

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The S-80142BLPF-JE3TFG, a 3.3 V input voltage supervisor device with integrated voltage detector, is a member of the PMIC (Power Management Integrated Circuit) Supervisory family. It is specifically designed to monitor a main supply voltage and a backup supply voltage in order to prevent the backup voltage from overriding the main voltage. It can be used in digital power supply systems, especially in automotive, industrial and medical applications where critical digital power needs to be monitored. The S-80142BLPF-JE3TFG is built around an integrated voltage detector and an open drain comparator, housed in a 2 x 1 al QFN package that is hermetically sealed and resistant to ESD pulses of up to 8k volts. The voltage detector has a dropout voltage of 0.1V @ 1mA, with a maximum supply current of only 15μA when running at 3.3V. The capacitance of the detector is only 35pF, which ensures that the voltage can be detected quickly, and the current consumption is low. The comparator is designed to sense a voltage drop as low as 0.3V. In order for the circuit to be operational, the voltage across the voltage detector must be greater than the voltage across the comparator. This enables the circuit to monitor both a main and a backup supply voltage and prevent the backup voltage from overriding the main voltage. Furthermore, the output of the comparator can be used as a watchdog timer to reset a microcontroller if it detects a low supply voltage or if the microcontroller has crashed. This is crucial in applications such as servers, where a sudden application crash needs to be monitored and recovery procedures initiated. In summary, the S-80142BLPF-JE3TFG is a high-performance, low-power supervisor device with integrated voltage detector, specifically designed for digital power supply systems, especially in automotive, industrial and medical applications where critical digital power needs to be monitored. It has a dropout voltage of 0.1V, a maximum supply current of 15μA and an output that can be used as a watchdog timer to reset a microcontroller. All these features make it an ideal choice for accurate monitoring of power supplies in critical applications.

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