MIC3172BM

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MIC3172BM is a DC-DC switching regulator which belongs to the PMIC type, Voltage Regulators family. It is a monolithic, fixed frequency, voltage mode, a step-down current mode PWM (pulse-width-modulated) controller with on-board power MOSFETs. This device is capable of delivering high level of output power (up to 1.5A) with low output ripple and regulation accuracy. The MIC3172BM offers a wide input voltage range (2.7V~29V), making it suitable for a variety of applications, including industrial, factory automation, communication and consumer applications.

The working principle of the MIC3172BM is quite simple and straightforward. At the input side, it features a wide input voltage range and can be powered directly from the AC power line or from regulated DC power supplies. At the output side, a high-frequency, voltage-mode Pulse-Width-Modulated (PWM) control is used to achieve high efficiency and precision output regulation. The PWM controller adjusts the output voltage based on the voltage feedback applied to the controller\'s internal reference pin. The MIC3172BM adjusts the output frequency automatically over the 0.4MHz to 1.5MHz frequency range so that required power can be provided while maintaining a constant output voltage.

The MIC3172BM also includes many current limit and fault protection features to ensure reliable operation. For example, the output over-current limit prevents the output current from exceeding the programmed limit while the reverse current protection feature will trigger a shutdown if an excessive reverse current is sensed. In addition, the MIC3172BM provides short circuit and under-voltage protection.

The MIC3172BM is widely used in a variety of applications requiring a highly efficient, high power DC-DC switching regulator with high accuracy output voltage regulation. Some typical applications are portable medical devices, battery powered systems, industrial control systems, automotive systems, factory automation equipment and computer peripherals.

In conclusion, the MIC3172BM DC-DC switching regulator belongs to the PMIC Voltage Regulators family and has a wide input voltage range, high efficiency and precision output regulation, current limit and fault protection features, and automotive system compatibility. These features make the MIC3172BM suitable for a variety of applications such as portable medical devices, battery powered systems, industrial control systems, automotive systems, factory automation equipment and computer peripherals.

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