MAX6865UK37D5L+T

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Power management integrated circuits (PMICs) are integrated circuits used to manage the power in a system. PMICs are widely used in embedded systems, digital electronics, automotive industry, and communications systems. Supervisors are a form of PMICs used to protect and monitor circuits in these systems. The MAX6865UK37D5L+T is a tracking ultra-low-power supervisor that is designed to protect and monitor power supplies in battery-operated systems. This article will discuss the applications and working principles of the MAX6865UK37D5L+T.

Applications

The MAX6865UK37D5L+T can be used to protect and monitor power supplies in battery operated systems. These systems require continuous, low-power operation as well as reliable monitoring and protection of the battery supply. The MAX6865UK37D5L+T is an ideal choice for these applications due to its ultra-low operating current and highly accurate tracking. The low operating current makes the MAX6865UK37D5L+T well suited for systems that have limited power resources such as those in portable devices. The tracking accuracy and adjustable threshold levels of the MAX6865UK37D5L+T make it ideal for monitoring and protecting portable applications that depend on stable power supply. It enables system designers to configure the monitoring and protection parameters to suit the specific application needs.

Working Principle

The MAX6865UK37D5L+T is an ultra-low-power tracking supervisor. The heart of the device is a precision voltage divider with a small reference current. The reference current is proportional to the VCC input voltage, which allows the device to accurately track the power source. The reference current passes through two resistors, one of which is adjustable. By adjusting the resistance value of this resistor, the user can set the monitoring and protection trip points as needed. The MAX6865UK37D5L+T has two outputs, RESET and _PWR_OK. The RESET output is used to reset the system when the VCC supply falls below the reset threshold. The _PWR_OK output is used to indicate when VCC is above the monitoring trip point.

The MAX6865UK37D5L+T also has an adjustable delay time. This delay time is used to prevent false-positive trip points as well as possible system glitches that may occur during power up or power-down. The delay time can be programmed with a capacitor that is connected between the DT pin and GND. When the voltage at the VCC pin goes above the monitoring threshold, an internal timer begins and the RESET output is released after the delay time has expired. This ensures that the power supply has stabilized to a safe operating level before the system is powered up.

Conclusion

In summary, the MAX6865UK37D5L+T is a tracking ultra-low-power supervisor designed for use in battery operated systems. Its low operating current and highly accurate tracking make it well suited for these applications. Its adjustable trip points and delay time parameters allow users to configure the monitoring and protection settings as required. This versatility makes the MAX6865UK37D5L+T a great choice for protecting and monitoring power supplies in portable and embedded systems.

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