MIC23250-G4YMT-TR

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The MIC23250-G4YMT-TR is a 4A, high frequency, synchronous step-down, DC-DC switching regulator. This device can introduce the power distribution system to a wide range of applications, providing flexibility and energy savings. It features integrated 1-cell Li-Ion Linear-Lithium-Ion protection and input power range up to 32V. With a quiescent current of only 1.5uA and a maximum rating of 4A, it is an excellent choice for high performance, power consumption efficient systems.

The MIC23250-G4YMT-TR is an Automotive-Grade part with a wide temperature range from -40˚C to 125˚C, making it suitable for a variety of automotive and industrial applications. Additionally, it has built-in fusing protection with the ability to monitor input line, provides for a reliable operation even in extreme conditions.

Applications

The MIC23250-G4YMT-TR is a versatile DC-DC switching regulator with applications in a wide range of industries including automotive, medical, and industrial applications. Examples of applications include 3D-printed parts, drones, PDAs, GPS navigation systems, automotive display panels and sensors. With an integrated EMI filter and an industry-leading transient immunity, it is also suitable for a range of critical design deployments.

Work Principle

The MIC23250-G4YMT-TR works by using an internally fixed frequency, high-efficiency buck (step-Down) switching regulator circuit, to convert one input voltage to a regulated, lower output voltage. It consists of a high-side power switch and low-side power switch connected in series. When the IC\'s enable pin is asserted, the high-side power switch turns on and a voltage pull-down circuit is triggered. This causes current to flow through the power switches, and the voltage at the output terminal is regulated by a feedback circuit.

The MIC23250-G4YMT-TR also includes a slew rate control circuit, which limits the rate at which the output voltage can change. This allows the switching regulator to have a tight output voltage regulation, limiting noise and ripple in the system. The IC also features integrated over temperature protection and a power good indicator, which allows the IC to be used in harsh automotive environments.

The MIC23250-G4YMT-TR also include safety protections such as over-current protection, which prevents any output over-current from damaging the IC, and EMI filter protection, which prevents any unwanted noise from entering the system. Last but not least, the IC has an adjustable soft-start, which gradually ramps up the output voltage from 0 volts to its operating voltage, offering a more reliable start up experience than other non-adjustable DC-DC switching regulators.

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