PST122

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 PST122 is a dual-channel voltage detection device with a 40V withstand voltage, ideal for monitoring automotive battery voltages. It offers a voltage detection accuracy of ±2%, including temperature variations, and features an N-channel open-drain output. The device operates with a typical current consumption of just 2.7 μA and supports an extended operating temperature range from -40°C to +105°C.

PST122 features :

• High withstand voltage
• High detection accuracy
• Low current consumption
• Selectable hysteresis voltage (0.1V to 4.0V)
• Dual-channel (2ch) detection
• Independent sense pins for each channel
• No delay time for detection

PST122 applications :

• Voltage monitor for car battery
• Voltage monitor for AC/DC converter output