APX812-31UG-7

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Power Management Integrated Circuits (PMICs) play a vital role in the electronic industry by providing benefits in terms of power efficiency, cost savings, and device reliability. PMICs are subsystems that offer integrated solutions for multiple system power requirements from a variety of voltage and current sources by managing the power supply system on a circuit board. They can be used as a replacement for discrete components to save space, reduce power losses, and improve system performance.Supervisors are a type of PMIC used to monitor and protect power supplies. They offer features such as power on/off sequencing, over-temperature protection, under-voltage lockout, voltage monitoring, and soft start. One example is the APX812-31UG-7 Supervisory IC from Diodes Incorporated. The APX812-31UG-7 is an 8-pin ultra-low voltage monitoring and reset supervisor IC. Its low operating voltage of 1.3V makes it suitable for battery powered applications, while its adjustable regulation voltage that ranges from 1.20V to 1.80V allows it to be used in a variety of voltage sources. The APX812-31UG-7 features a watchdog timer that can be used to detect system malfunctions. The timer is adjustable over a wide range through resistor divider networks. The IC also features a push reset button that can be used to manually reset the system. The APX812-31UG-7 is designed to monitor two input voltages and can generate an active-low reset signal with a corresponding reset time delay. It has a user-selectable power-on reset time delay of either 3 seconds or 10 seconds. This reset time delay ensures that the system has had sufficient time to power up and stabilize before any external devices are turned on.In addition, the APX812-31UG-7 is equipped with an overtemperature monitoring feature. This feature is based on an external NTC-type thermistor that is connected to the IC for temperature measurement. When the temperature exceeds the thresholds set by the user, the IC will send out an active-low reset signal. The APX812-31UG-7 is a versatile IC that can be used in a variety of applications. It is suitable for battery-powered devices, such as mobile phones, modems, set-top boxes, GPS systems, etc., or any other system that requires overcurrent or overtemperature protection. Furthermore, the APX812-31UG-7 is designed to be compatible with various interface technologies such as I2C, SMBus, and SPI.In summary, the APX812-31UG-7 is a versatile supervisor IC that offers features such as monitoring of two input voltages, watchdog timer, user-selectable power-on reset time delay, and overtemperature monitoring. Its low voltage and adjustable regulation voltage makes it ideal for a variety of battery-powered applications, while its compatibility with various interface technologies makes it suitable for a wide range of applications.

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