MIC2177-5.0YWM-TR

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The MIC2177-5.0YWM-TR is a 4-pin, step-down DC-DC switching regulator that provides up to 5A of adjustable output current. It is a non-isolated solution and is ideal for applications requiring a small footprint, high efficiency, and low dropout voltage.

Typically, a switching regulator consists of an input supply, an inductor, a large capacitor, a pulse width modulation (PWM) controller, and some form of feedback circuit. The feedback circuit is comprised of either an error amplifier or an internal programmable feedback loop to maintain the desired output voltage. The main components of a switching regulator are the power stage and the control stage. The power stage is the switch, rectifier, and output filter, while the control stage is the pulse width modulation (PWM) controller.

The MIC2177-5.0YWM-TR features a true fixed-frequency continuous conduction mode (CCM) switching regulator with internal compensation and output voltage adjustment. It uses an adjustable current limit to provide protection from output overcurrents and short circuits. For improved transient response, the voltage regulator utilizes pulse-skipping and pulse-switching in heavy load steps. The device also uses a very small external compensation network for smaller board area and more efficient compensation.

The MIC2177-5.0YWM-TR offers an adjustable output voltage range of 1.25V to 5V, adjustable switching frequency from 200 kHz to 2.3 MHz, and adjustable current limit from 1.5 A to 4.2 A over an input voltage range from 4.5V to 12V. The device also features a precision enable pin, a programmable soft-start, and a power-good output. The device is capable of operating in both continuous mode and discontinuous mode. The MIC2177-5.0YWM-TR has built-in protection features such as output current limit, thermal shutdown, and over-voltage protection.

The MIC2177-5.0YWM-TR is ideal for applications such as LED backlighting, battery-powered systems, and point-of-load converters. It has an integrated high-side MOSFET for higher efficiencies and a low quiescent current for enhanced light-load performance. The device also offers a low noise output for quiet performance and a wide operating temperature range from -40°C to 85°C.

In summary, the MIC2177-5.0YWM-TR is a small 4-pin, step-down DC-DC switching regulator that provides high efficiency and a low dropout voltage. It has an adjustable output voltage range of 1.25V to 5V, adjustable switching frequency from 200 kHz to 2.3 MHz, and adjustable current limit from 1.5 A to 4.2 A. It is ideal for applications such as LED backlighting, battery-powered systems, and point-of-load converters.

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