MIC2875-4.75YMT-T5

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The MIC2875-4.75YMT-T5 from Micrel is a high efficiancy, 4.75A synchronouse step-down switching regulator, providing a low component count solution to power conversion needs. This device has a wide input voltage range of 4.5V to 18V and an adjustable output voltage rail ranging from 3V to 14.4V. The MIC2875-4.75YMT-T5 is suitable for applications that require an efficient, reliable and cost effective power solution.

Application Field of MIC2875-4.75YMT-T5

The MIC2875-4.75YMT-T5 is a versatile regulator which can be used in many applications that require a low power conversion solution. This device is suitable for applications that require a robust, cost effective and highly efficient power supply. It is also ideal for applications that require a wide input voltage range and adjustable output ranges. This device can be used in a variety of consumer and industrial applications including cell phones, tablets, set-top boxes, game consoles, automotive, medical and aerospace.

Working Principle of MIC2875-4.75YMT-T5

The MIC2875-4.75YMT-T5 is a synchronous step-down DC-DC switching regulator, developed on the Micrel process node. In order to provide high efficiency, low output ripple and no need for an external compensation network, the device utilizes at synchronous, fixed frequency, PWM current mode control. In relation to the synchronous design, two high level MOSFETs are used to provide a regulated output voltage with current mode control.

The device has an adjustable output voltage range that can be set with the feedback voltage. The voltage is programmed by the resistor divider connected to the FB pin. The power pass element (MOSFET) is controlled through a fixed frequency, current-mode PWM control circuit. The frequency of switching is adjustible between 150kHz and 600kHz.

The device also features a wide input voltage range of 4.5V to 18V, allowing it to be used in applications with unstable input power sources. It has a high efficiency up to 95% and a low quiescent current of less than 5mA, making it suitable for battery-powered applications. Additionally, the device provides protection features such as over current protection, under voltage lockout, thermal shutdown and over voltage protection.

In order to meet user needs, the MIC2875-4.75YMT-T5 is extremely adjustable, providing features such as Single Rail-to-Rail Output, Adjustable Input Over-Voltage Protection, Adjustable Output Over-Voltage Protection, Adjustable On-Time Delay and Soft Start. These aspects make it suitable for providing reliable regulated and low noise power to any system that requires efficient power conversion.

The MIC2875-4.75YMT-T5 from Micrel is a highly efficient, low power DC-DC step-down regulator, which is suitable for a variety of applications. With its wide input voltage range, adjustable output voltage range and no need for an external compensation network, the device is an ideal low power solution for many applications.

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