MAX702EPA+

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MAX702EPA+ is a supervisor and electronic power manager integrated circuit developed by Maxim Integrated. It provides versatile power system management with intelligent mains power-fail detection, backup battery monitoring, and system reset circuitry. It offers features like an adjustable power-fail threshold, a debounced reset output, an adjustable reset timeout period and an open-drain power-fail logic output.

The MAX702EPA+ is targeted at AC/DC power systems which require reliable power-fail detection. It works with mains power supply systems, including AC/DC adapters, compact power supplies and standby power systems. It also works with battery backup systems, such as batteries, uninterruptible power supplies (UPS) and other off-line systems.

The MAX702EPA+ integrates a power-fail detector with a reset generator. It continually monitors the input voltage level and issues an alarm signal when it fails below a preset power-fail threshold. It also has a restart timer that delays the reset output until after a delay period has expired. This allows for power recovery before resetting the system.

The power-fail threshold is set using a resistive voltage divider. With the voltage divider, the MAX702EPA+ can be adjusted to detect a power outage as low as 3.1V or as high as 6.13V. The electronic system reset can be triggered either by a power-fail signal or by a manual reset signal. The reset output is configured as an open-drain CMOS gate, making it compatible with any supply voltage.

The MAX702EPA+ features low-power consumption, high noise immunity and logic input levels that make it ideal for consumer electronics and other applications. The MAX702EPA+ controller is “reset immune”, meaning it will not reset if a manual reset is issued during power-fail. This helps ensure that an unexpected reset does not cause damage to the system.

The MAX702EPA+ also offers a wide range of monitoring and control functions. It can be used to detect power-fail events, low battery levels, short circuit conditions, over-temperature events and other system fault conditions. It also offers a range of control functions, such as start and stop control of power supplies and the ability to selectively disable power to various on-board components.

Overall, the MAX702EPA+ is a cost-effective and reliable power monitoring solution. It offers advanced features and a range of power management options, making it well-suited for many power system applications. Most importantly, its low-power consumption and high noise immunity make it a good choice for consumer electronics and other applications.

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