MIC2172BM

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The MIC2172BM is an integrated synchronous step-down DC/DC regulator, specifically designed for high current applications. It supports after-burn protection, enabling safe, reliable operation. This device is ideal for high power applications, such as industrial and automotive use, where robustness and energy efficiency are critical.

The MIC2172BM provides an adjustable output powered by an externally sourced voltage source. It is designed to minimize external component-count and reduce board space. This device enables adjustable voltage and/or current limiting with a convenient external trim potentiometer. It provides output current at high frequency up to 500 kHz and with robust protection features, such as over-temperature and overload protection.

The MIC2172BM is a robust device that can operate from a wide input voltage range, from 6V to 24V. It is highly efficient, with efficiencies of up to 90%. It also includes an integrated low-power synchronous switch for high-end applications, such as servers and high-performance desktops.

The working principle behind the MIC2172BM is based on a synchronous step-down DC/DC converter, specifically designed for high current applications. This device contains an internal high-side and low-side MOSFETs. The high-side MOSFET is used to convert the input DC voltage to the required output voltage. As this is done, the low-side MOSFET provides the required capacitive load drive, improving efficiency at higher output currents. The device also contains a calibration circuit, allowing the output voltage to be precisely adjustable.

The MIC2172BM switching frequency is factory adjusted to 500 kHz which allows the use of small external components for the printed-circuit board (PCB) layout. This device provides a wide range of features that make it an ideal solution for harsh industrial and automotive environments, such as a low-EMI (Electromagnetic Interference) switching scheme and robust protection against thermal, reverse-voltage, under-voltage, and load fault conditions. The device also contains an after-burn protection feature, which disables the output when the input voltage approaches the output voltage, ensuring a safe operation.

In summary, the MIC2172BM is a synchronous step-down DC/DC regulator, designed for high current applications. It provides automatic output voltage and current-limiting and is highly efficient, with efficiencies up to 90%. This device is suitable for use in harsh industrial and automotive environments and provides a wide range of features and protection schemes.

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