APX803L40-25SA-7

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Power Management Integrated Circuits (PMICs) are the basis for power solutions in many applications and one of the most important types of PMIC devices is supervisors, which are special ICs for suppressing voltage spikes in power systems. APX803L40-25SA-7 is a supervisor from TDK designed for managing the power supply system and monitoring microprocessor (MPU) voltage. The device has some features like programmable options, adjustable reset delays, low-power standby mode and an integrated watchdog timer, so it is particularly suitable for mobile and embedded applications.

The APX803L40-25SA-7 supervisor can support a Power Good voltage of 3.3V to 5.5V and has an adjustable reset delay time set between 0.5ms to 1000ms. It also supports programmable delay options of 10 ms, 100 ms and 500 ms by using external capacitors. The integrated watchdog timer starts automatically when the reset input has been enabled and is adjustable from 1 ms to 1000 ms. The integrated control is designed to detect a voltage drop from the power supply rail and will reset when the voltage has dropped by 50mV from the set trip point.

APX803L40-25SA-7 works by monitoring the power supply system for changes incoming from the power sources, such as the battery, charger and other components. When a voltage change is detected, it will send a reset signal to the microprocessor. This will cause the microprocessor to reset and the system can be reset to a known state under certain conditions.The reset time of APX803L40-25SA-7 can be adjusted according to user needs.By using a capacitor with different time constants, it can have different reset time outcomes. In addition, the device also has a low power standby mode that can be used to conserve power when the device is not actively in use.

In addition, the APX803L40-25SA-7 can be used to detect undervoltage and overvoltage conditions. It will monitor the power supply voltage and generate a reset signal when either of these conditions is detected. This reset signal can be used to reset the system to a known state and protect the microprocessor from any potential damage. Finally, the device can also detect a short circuit from an external device, such as an I/O port, and reset the system to prevent a malfunction.

The APX803L40-25SA-7 supervisor is suitable for a range of applications and platforms. It can be used to monitor the power supply system and protect the microprocessor from any potential damage, allowing the system to stay in a known state. It is particularly suitable for mobile and embedded applications, including industrial process control systems, medical imaging devices, and automotive components. The device can be used in any application where reliable, power supply system monitoring and protection are required.

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