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The MIC28513-1YFL-TR is part of a family of high-efficiency, feature-rich, synchronous step-down dc-dc switching regulators from Microchip. These switching regulators provide up to 2A of output current, designed for high-power applications such as LED lighting, computing, telecommunications, and automotive systems. The MIC28513-1YFL-TR is used for applications requiring a wide input voltage range from 3V to 28V and provides a wide output voltage range from 0.6V to 15V.

The MIC28513-1YFL-TR switching regulators provide precision output voltage regulation, high efficiency, and extended battery life. They feature an on-chip high-efficiency MOSFET, maximum current and peak current protection, and an analog voltage feedback loop with a wide 0.6V to 5V input voltage range. The MIC28513-1YFL-TR also includes a low-power shutdown mode, an adjustable soft-start, and a programmable maximum duty cycle.

The MIC28513-1YFL-TR switching regulators offer an adjustable switching frequency of up to 4 MHz, making them suitable for high-frequency applications. They also offer low external component counts, with only four external components required. The MIC28513-1YFL-TR regulators are offered in an SOIC package and are available in a wide temperature range from -40°C to +125°C.

Working Principle:

The MIC28513-1YFL-TR is a synchronous step-down dc-dc switching regulator. It uses an integrated MOSFET to convert a DC input voltage to a regulated lower voltage output. The regulating action is accomplished by switching the MOSFET on and off at a precise frequency, determined by an internal oscillator and an external clock. When the MOSFET is on, the current is supplied to the load, and when it is off, the input voltage is applied across the MOSFET’s drain and source terminals. The frequency of the switching is controlled by the voltage feedback loop from the output terminal of the regulator.

The MIC28513-1YFL-TR is capable of output current of up to 2A. It has a wide input voltage range of 3V to 28V, and it provides a wide output voltage range from 0.6V to 15V, with the output voltage adjustable by an external potentiometer. It also features an analog feedback loop with wide-range 0.6V to 5V input voltage range and a programmable maximum duty cycle.

The MIC28513-1YFL-TR features an on-chip high-efficiency MOSFET, maximum current and peak current protection, and an adjustable soft-start. It is offered in the small SOIC package and is available in a wide temperature range from -40°C to +125°C. The MIC28513-1YFL-TR switching regulators offer low external component counts, with only four external components required.

Conclusion:

The MIC28513-1YFL-TR is a high-efficiency, feature-rich, synchronous step-down dc-dc switching regulator from Microchip. It offers excellent performance and reliability, wide input voltage range, high output current capability, adjustable output voltage, and a wide temperature range. It is suitable for applications requiring power efficiency and extended battery life and is offered in an SOIC package with a low external component count.

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