S-80918CNPF-G8NTFU

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PMIC (Power Management Integrated Circuit), also known as PMU (Power Management Unit) or power supply chip, is an integrated circuit (IC) which performs power management functions in electronic systems. PMICs are used in all kinds of electronic systems, ranging from smartphones and tablets to automotive applications, home appliances and industrial equipment. PMICs are integral to ensuring reliable power for the system, managing system power consumption and optimizing performance.

One of the components of PMIC is supervisors, also known as Power-On-Reset (POR) circuits or watchdog timers. A supervisor provides a simple way to ensure the microcontroller on an embedded system is functioning correctly, by monitoring the system for unexpected restarts and taking the appropriate emergency measures when it detects an abnormal condition. Supervisors are commonly used on embedded microcontroller systems, providing protection from faults such as power loss, code execution errors, and brownout conditions.

The S-80918CNPF-G8NTFU is an 8-pin Supervisory PMIC specifically designed to monitor power supply systems in automotive electronic devices. It is a POR-LVR (Power-On-Reset Low Voltage Reset) device, providing monitoring and reset functions for the microcontroller in automotive applications. The S-80918CNPF-G8NTFU features a low voltage reset input (Lri) and a Power Supply ON/OFF input (Pon/off) which can be used to enable/disable the power supply as needed. The power supply voltage range is 5V to 40V, and its operating temperature range is -40°C to +125°C.

The S-80918CNPF-G8NTFU includes an accurate Hysteresis Voltage Detector (HVD) which monitors the power supply voltage to detect brownout conditions. When a POR occurs, the HVD detects the power supply voltage is below the reset threshold, and triggers a reset to the microcontroller in the system. The S-80918CNPF-G8NTFU features an adjustable power-on reset threshold, allowing it to be customized for different applications. The HVD is Reset Enable (RE) compatible, which means the microcontroller can be triggered to an active state immediately when power on is detected even when the system is in shutdown mode. The device has an additional active-low reset output, RESETx, used to keep the microcontroller in reset state until an “OK”voltage has been detected. The S-80918CNPF-G8NTFU also includes a watchdog timer (1 to 256 sec) to ensure the microcontroller is operating properly. If an illegal condition is detected, the device will reset the microcontroller.

The S-80918CNPF-G8NTFU PMIC is suitable for automotive electronic devices such as automotive infotainment systems, car navigation systems, instrument clusters, and autonomous driving systems. Its low power consumption feature and wide operating temperature range make it an ideal solution for such applications.

In summary, the S-80918CNPF-G8NTFU is a POR-LVR PMIC designed for automotive electronic applications. Its features include low voltage reset input (Lri) and Power Supply ON/OFF input (Pon/off), Hysteresis Voltage Detector (HVD) for brownout detection, adjustable power-on reset threshold, active-low reset output (RESETx), and a watchdog timer (1 to 256sec). It is suitable for automotive infotainment systems, car navigation systems, instrument clusters, and autonomous driving systems, thanks to its low power consumption feature and wide operating temperature range.

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