MAX6734KASYD3+T

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Power management integrated circuits (PMICs) are devices that manage the power supply to a device and ensure a steady power supply to the different parts of the circuit. A PMIC supervisor is a PMIC that provides fault detection and prevention to ensure proper and efficient operation of the integrated circuit. The MAX6734KASYD3+T is a supervisor device from Maxim Integrated designed to provide power supply supervision, reset and watchdog functions for microcontroller-based systems.

The MAX6734KASYD3+T is an advanced supervisor IC with an integrated voltage converter that can monitor multiple voltage rails and shut down the power supply when over-voltage is detected. The device has two independent watchdog timers with programmable timeouts, reset outputs, and a programmable reset input, which allows it to be used as a reset controller IC or as a complete supervisory solution. The device also features an on-chip watchdog system that monitors the integrity of the system and detects faults before they cause system failure. The device is housed in a 5-pin SOT23 package.

Application Fields

The MAX6734KASYD3+T is suitable for a wide range of power supply applications such as automotive, industrial and embedded systems. In automotive applications, the device can be used to provide power supply monitoring and protection to control systems, sensors, actuators and other components. In industrial applications, the MAX6734KASYD3+T can be used to provide reset, watchdog and power supply supervision for controllers and other microcontroller-based systems. The device can also be used in embedded systems for protection against over-voltage, over-current, power supply monitoring and power supply fault protection.

Working Principle

The MAX6734KASYD3+T supervisors operate from a supply voltage between 2.5V to 5.5V and provide an output timer window of one second. The device has two independent voltage monitors with programmable thresholds that can detect a voltage drop or an increase in voltage and generate a reset or an interrupter output. When the monitored voltage exceeds or falls below the programmed thresholds, the device will generate a reset or interrupt output. The device also has two independent watchdog timers for reset and delay control, which can be programmed for a "reset" or "delay" mode.

When the watchdog input is enabled, the device will check for the correct sequence of pulses from a microcontroller or other device. If an incorrect sequence is detected or if a timeout period has elapsed, the device will generate a reset output or an interrupt as programmed. The device also has a Manual Reset (MR) input and a Programmable Reset (PR) input which can be used to trigger a reset. The PR input allows the user to program a specific sequence of pulses or a timeout event that will generate a reset output.

The MAX6734KASYD3+T provides system builders with a cost-effective and reliable power supply supervision, reset and watchdog system that provides robust protection against over-voltage, over-current and power supply fault conditions. The device is low power and offers high integration, making it ideal for embedded applications. The device is available in a small package and is RoHS compliant.

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