MAX16091UK44DIB+T

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The MAX16091UK44DIB+T is a small, space-saving, low-power supervisor IC for monitoring power supply, system voltage, or temperature levels in space-constrained, battery-operated systems. This supervisor includes an active low reset and an active low, power-on reset with precision thresholds 0.9V with ±0.05V accuracy. It also provides an open-drain RESET output, an internal power-on reset with an adjustable reset delay, and an active-low open-drain reset output. The IC offers an adjustable reset threshold voltage and reset time delay range. The Supervisor also provides a factory-programmed temperature threshold with an options of 105°C and 115°C. The MAX16091UK44DIB+T is available in an 8-pin SOT23 package.

The MAX16091UK44DIB+T supervisor is categorized as a PMIC - Supervisors type IC (Integrated Circuit). It is used to monitor the power supply or system voltage, or temperature levels in space-constrained, battery-operated systems. It can be used for reset/power-on reset sequencing applications for various on/off control and monitoring systems. The supervisor provides a reliable system reset and protection against locking up due to an overclocking, brown-out and/or overvoltage situation.

Working Principle:

The MAX16091UK44DIB+T supervisor IC uses two comparators that detect the voltage and temperature levels. The two comparators compare the monitored voltage and temperature levels with the preset threshold voltages. When the monitored level exceeds the threshold, it sends a reset signal. This reset signal is then used to trigger the active low reset and power-on reset outputs for sequence control and protection against overvoltage/overcurrent situations.

The Supervisor also features an internally provided power on reset for reset sequencing, a reset delay timer, a soft reset feature, as well as an open-drain RESET output and a delay mode selection. The delay mode selection is used to select between fast and slow delay time. The internal power-on reset circuit provides a positive reset pulse output whenever power is applied. The soft reset feature allows the reset output to be manually triggered, which eliminates the need for an external reset button. The delay timer circuit provides adjustable reset time which can range up to 64ms, depending on the voltage and temperature.

In addition to the reset/power-on reset sequencing, the MAX16091UK44DIB+T supervisor provides short-circuit protection and over-voltage protection. The short-circuit protection ensures that the power supply is shut down in case of a short circuit or a sustained overload, preventing malfunction and damage. The over-voltage protection prevents over-voltage conditions from damaging components and equipment. The supervisor also includes an adjustable threshold voltage and reset time delay range.

In summary, the MAX16091UK44DIB+T is an ideal supervisor IC for reset/power-on reset sequencing and monitoring power supply, system voltage, or temperature levels in space-constrained, battery-operated systems. Its features, along with its adjustable reset threshold voltage and reset time delay range, provide for reliable reset/power-on reset sequencing and protection against short circuits, over-voltage, and brown-outs.

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