MAX6323FUT46+T

Power management integrated circuits (PMICs) are the key component for any battery-operated system design. They are used for power sequencing, monitoring, measuring, and controlling power needed for any user application. PMICs are necessary since battery-operated systems contain several integrated circuit components, memory, and peripheral devices with different power requirements.

Among these devices, supervisors are special PMICs used as an electronic watchdog and reset circuit. They inform the system of any power up/down transition, low voltage condition, short or overload protection, or temperature related condition. Supervisors also maintain an active low RESET output, to alert the system when an event occurs and handle power-up or power down sequences.

The MAX6323FUT46+T is a low cost, 2.6V to 5.5V, spi/microwire selected, reset supervisor with watchdog timer and power-fail/brownout reset. It ensures proper system functioning by resetting and rebooting the device when there is any over-voltage or over-temperature shutdown.

The MAX6323FUT46+T contains Watchdog Timer and Power-Fail/Brownout comparators. The Watchdog Timer keeps the system running and can be used to help recover from an unexpected software lock-up or system malfunction. The Power-Fail/Brownout Comparator (PFC) monitors the system power supply for an undershoot or brown-out condition. It also prevents a system reset being generated by a short pulse on VCC or any other spikes or glitches on the supply.

The MAX6323FUT46+T offers many features in a tiny, 5-pin SOT23 package. It also has a precision programmable reset time-out period between 100 ms and 255 s. The device can be enabled/disabled directly from the digital inputs, enabling power management to be controlled by the host system at any time.

The MAX6323FUT46+T can be used in a variety of applications such as embedded control, energy management, automotive, consumer, industrial and medical. Its ultra-low quiescent current allows for minimal power saving in battery operated applications. Also, the watch dog timer and power fail/ brown out reset circuitry ensure predictable system response to various contingencies.

In summary, the MAX6323FUT46+T is a low cost and simple supervisory IC which can provide a very reliable system reset and watch dog timer function for a range of different application fields. Its ultra-low quiescent current and high accuracy allow for power saving and reliable power monitoring in a wide range of applications.