PST853A-PST854A

The RESET IC is an integrated circuit for voltage detection/power monitoring management. It is mainly used to monitor the power supply voltage of CPUs and other logic systems by detecting whether it has reached a specified threshold value. It triggers a system reset when power is turned on or when a momentary power failure (voltage drop) is detected. RESET ICs are widely used in many types of electronic devices such as office equipment and large home appliances. Although MCUs (microcontrollers with built-in reset functions) or other components can perform similar functions, critical safety protection functions can only be reliably ensured by RESET ICs. MinebeaMitsumi's comprehensive lineup of reset ICs includes various features, such as built-in delay circuits, separate detection inputs, manual reset functions, and built-in timers. All products offer high accuracy, low current consumption, and a wide detection voltage range, ensuring a wide range of solutions to meet various system requirements.

MinebeaMitsumi PST853A and PST854A are system reset devices designed to detect power-off events or power flicker in the power supply of CPUs or logic systems. They feature a delay timeset by an external capacitor and includes a separate sense pin. The reset output does not activate unless the sensed voltage falls below a defined minimum operating threshold, thanks to the separation of the sense and power supply pins. This makes these ICs particularly suitable for low-voltage detection applications.

PST853A and PST854A features :

• Low current consumption
• High accuracy detection
• Separated sense pin

PST853A and PST854A applications :

• Reset circuits for microcomputers, CPUs and MPUs
• Reset circuits for logic circuits
• Battery voltage check circuits
• Back-up power supply switching circuits
• Level detection circuits