MAX6865UK40D3L+T

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Power Management IC (PMICs) are indispensable electronic components used to control, manage, and monitor the voltage and current supplied to a microprocessor, microcontroller, or other sensitive electronic system. Supervisors are a class of PMIC that provide specialized circuitry and features to monitor system activity, reduce risk of system failure, and facilitate a robust and reliable system design. The MAX6865UK40D3L+T is a high-performance supervisor with a robust feature set enabling a broad range of low-power system design applications.

The MAX6865UK40D3L+T is a 4-channel supervisor with integrated Programmable Delay and Power-On Reset (POR) delay, Active-Low and Active-High reset outputs, and a watchdog timer. It is designed for monitoring microprocessor or logic circuits for power supply voltage, logic input, and logic level conditions to ensure a safe and reliable system. It also provides a programmable time delay for system-level μPs to allow them to complete their start-up process. Additionally, it can provide various combinations of reset outputs and/or supply diver-down current limit as an over-voltage/current protection circuit.

The MAX6865UK40D3L+T is ideal for battery-powered applications that require a diverse selection of monitoring functions and configurable reset conditions. It is designed to be tolerant of noise and spurious logic signals, thus providing strong protection against a wide range of potential system errors, outages, and reset issues. Furthermore, its integrated voltage detector, brownout level detector, reset/delay controller, force reset function, and low power consumption make it a suitable choice for implementing advanced functions into small, low-power applications.

The MAX6865UK40D3L+T monitor inputs are provided for continuously monitoring of logic and power circuits for over-voltage and under-voltage conditions. The device offers both single and dual-channel inputs, allowing for multiple conditions to be monitored before a system reset is triggered. It also includes a programmable delay between the input condition detections and the generation of the reset signal, allowing the system to reach its operating state before the reset is asserted. This delay can be configured using a preset resistor and is triggered when the monitored voltage enters a critical region.

The MAX6865UK40D3L+T watchdog timer allows for autonomous system fault detection and control. It can be configured to reset the system if the watchdog timer is not properly serviced within a predetermined time limit. Additionally, the device allows the watchdog timer to run in "sleep mode," meaning it can be disabled during periods of inactivity, while the voltage and logic monitoring is kept active. This feature is ideal for battery-powered applications that must enter sleep mode to conserve power.

The MAX6865UK40D3L+T also includes an active-low reset output for forcing system reset with a low-level logic signal. This can be used to reset system conditions in extreme cases such as full system freezes and severe current leakage, allowing the system to recover safely. Additionally, it can also be configured to cause a system reset if the chip is subjected to excessive current.

The MAX6865UK40D3L+T is a powerful and versatile supervisor, providing the features necessary to monitor and manage a wide range of voltages and circuits in a variety of low-power applications. Its wide monitoring bandwidth and programmable delays make it an ideal choice for monitoring sensitive electronic systems, while its ability to enter sleep mode and force reset with a logic signal make it an extraordinary solution for battery-powered systems.

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