MIC28304-2YMP TR

MICREL SEMICONDUCTOR  MIC28304-2YMP TR  直流-直流开关降压稳压器, 可调, 4.5V-70V输入, 900mV-24V输出, 3A输出, QFN-64

The is a synchronous step-down Regulator Module features a unique adaptive on-time control architecture. The module incorporates a DC-to-DC controller, power MOSFETs, bootstrap diode, bootstrap capacitor and an inductor. It operates over an input supply range from 4.5 to 70V and can be used to supply up to 3A of output current. The output voltage is adjustable down to 0.8V with a guaranteed accuracy of ±1%. The device operates with programmable switching frequency from 200 to 600kHz. "s Hyper Speed Control™ architecture under the medium to heavy loads, but also maintains high efficiency under light load conditions by transitioning to variable frequency, discontinuous-mode operation. It offers a full suite of protection features to ensure protection of the IC during fault conditions. These include undervoltage lockout to ensure proper operation under power-sag conditions, internal soft-start to reduce inrush current and foldback current limit.

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Easy to use - Stable with low-ESR ceramic output capacitor

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Single-supply operation

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Power good PG output

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Hiccup mode current limit

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Low radiated emission EMI per EN55022, class B

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Adjustable current limit

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Supports safe start-up into a pre-biased output

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5ms Internal soft-start, internal compensation and thermal shutdown

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0.8V Reference voltage with ±1% accuracy