MAX6310UK40D4-T

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The MAX6310UK40D4-T is a resistance-programmable, under voltage protection and reset supervisor designed for use in battery-powered systems. It offers three reset active-low reset outputs, an adjustable undervoltage input, an integrated oscillator and a watch-dog timer. The MAX6310UK40D4-T provides an interface to detect if the voltage signal applied to the reset pin is below the under-voltage threshold, and it also provides over-voltage protection.

The MAX6310UK40D4-T is an ideal solution for battery-powered applications with limited battery life margin and supply voltage variations. As a supervisory circuit, it guards against supply voltage drops and system malfunctions, and a watch-dog timer acts as an additional fail-safe safeguard. The under-voltage input and reset outputs are adjustable with a resistance divider. The MAX6310UK40D4-T is available in a two-bump chip-scale package (UCSP™) and it supports optimized battery life and low power operation.

Application Field

The MAX6310UK40D4-T is suitable for use in most battery-powered systems such as portable electronics, embedded systems, handheld instrumentation, and remote sensor systems. The chip-scale package makes this part ideal for use in all small-form-factor applications where space is limited. This include mobile telephones, portable game consoles, digital cameras, and other small consumer electronics.

The MAX6310UK40D4-T is also suitable for use in industrial control applications, including embedded controllers, portable instruments, industrial and HVAC controls, and plant automation systems.

Working Principle

The MAX6310UK40D4-T is an active low reset supervisor that protects against supply voltage drops below an adjustable under-voltage threshold and over-voltage surges. When the voltage applied to the reset pin drops below the under-voltage threshold, a reset signal is asserted, notifying the associated control logic of the condition. The MAX6310UK40D4-T also features a watch-dog timer that can be used either to generate a periodic reset signal or to reset the system in the event of a malfunction.

In addition to active low reset outputs, the MAX6310UK40D4-T has an active high RESET_B output. This pin is asserted when the supply voltage exceeds an adjustable over-voltage level. This additional protection ensures that the system is not damaged by an excessive supply voltage.

The MAX6310UK40D4-T also features an integrated oscillator that can be used to generate periodic reset signals. The oscillator can be programmed with a single external resistance to generate a periodic reset signal of a predetermined period. This feature can be used to periodically reset the system to the initial states, thus providing additional reliability.

The MAX6310UK40D4-T has a power-on-reset (POR) circuit that includes two hysteresis levels. The POR circuit has two levels of hysteresis and it is activated when the . nominal supply voltage exceeds the upper hysteresis level. The part then detects if the voltage subsequently drops below the lower hysteresis level. When this condition is detected, the POR pin is asserted.

The MAX6310UK40D4-T offers superior reliability and fast response times. It is designed to survive a wide range of supply voltages and is capable of withstanding up to 200mA peak-current transient events. The chip-scale package ensures that this part consumes minimal power and takes up minimal board area.

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