MAX6864UK31D1S+T

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A supervisor is an active semiconductor circuit integrated into a system to monitor for correct power and system conditions. MAX6864UK31D1S+T is a supervisor with a Power Management Interface Circuit (PMIC) and is the industry’s lowest current supervisor in the small 8-pin TDFN package. It is suitable for applications such as battery-powered guidance systems and mobile phones.

Supervisors are used to reduce the risk of system failure due to device outages and to protect against elevated voltages. MAX6864UK31D1S+T is configured as a reset generator, monitoring the supply voltage, input processes, and output voltages. The supervisor’s 1.6V area of operation works well with inductor-centric battery-derived power supplies.

This supervisor has two digital inputs, two open-drain outputs, and two manual reset inputs. A single reset output is provided to drive a reset output in active low mode with the capability to drive most TTL and CMOS devices. An active pull-up circuit is employed on the serial data input to ensure correct operation.

The MAX6864UK31D1S+T makes use of a bandgap voltage reference and an internal comparator to check the system voltages. A dedicated comparator monitors the input voltage and sets a reset-sequence threshold based on an externally specified voltage level. A second comparator monitors the system’s output voltage, setting another threshold.

The MAX6864UK31D1S+T provides protection against short and long duration power supply overshoots and undershoots. It also guards against back-to-back power-supply turn-on transients. If the supervisor detects a fault, it generates a reset waveform with a programmable time-out falling edge. When the power supply falls below the low-level trip point, the supervisor initiates a time-out period before reset is issued.

The supervisor also features a programmable reset watchdog timer. This timer is used to monitor a specific reset function and the period for which it is active. It is designed to detect unintended or erratic reset waveforms with programmable widths, heights and timings. This ensures correct system reset in spite of any kind of fault.

The MAX6864UK31D1S+T can be configured to be synchronized with an external oscillator or an external clock. A low-frequency oscillator of up to twoMHz can be used to synchronize the external and internal clocks and maintain system timing. This makes it ideal for applications where precise timing is essential.

The MAX6864UK31D1S+T is available in the 8-pin TDFN package, which offers the very small size that is needed for many high-density applications. It is well suited for use in battery-powered systems due to its low operating current. The supervisor also has a strategic reset-sequence sequencing option, which allows it to synchronize multiple voltage rails in a power-management system.

The MAX6864UK31D1S+T is designed for use in a variety of systems, including portable electronic device, handheld device, and medical equipment. Using it in these applications will help ensure system safety, reduce power consumption and increase reliability.

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