MAX1791EUB

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MAX1791EUB is a highly integrated DC-DC switching controller for step-up and step-down applications. It includes an internal high-voltage power transistor, along with a sense resistor, current-sense comparator, slope compensation comparator and voltage reference. This regulator is suited for applications requiring a wide input voltage range, such as automotive and medical systems.

The MAX1791EUB is well-suited for high-current applications needing to be supplied from one or two regulated sources. It features a wide input voltage range of up to 40V and a wide range of output voltage adjustments. The device can be controlled in either automatic or manual modes for simpler and more efficient operation. Moreover, the regulator includes over-current and temperature protection, in addition to a PGOOD output to indicate if the output voltage is stable and within acceptable limits.

The MAX1791EUB\'s working principle is based on controller mode and output voltage mode operations. In the controller mode, an input voltage and current limit is used to set the output voltage. This limits the maximum output current and provides load current regulation as a function of input voltage. In output voltage mode, the output voltage is set by the output voltage control pin, which governs the duty cycle of the internal switch. The duty cycle is then adjusted to maintain the desired output voltage. The regulator also features soft-start and tracking functions to ensure smooth system start-up and output voltage sequencing.

The MAX1791EUB is ideal for automotive, medical and industrial applications that require a high-current DC-DC regulator with a wide input voltage range. It is well-suited for high-current applications needing to be supplied from one or two regulated sources with a range of output voltage steps. The device includes safety features such as current and temperature limit, in addition to a PGOOD output to indicate voltage stability.

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