描述 Description

The MIC2103/04 are constant-frequency, synchronous buck controllers featuring a unique adaptive ON-time control architecture. The MIC2103/04 operates over an input supply range from 4.5V to 75V and can be used to supply up to 15A 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 200kHz to 600kHz. Hyper Light Load? architecture provides the same high-efficiency and ultra fast transient response as the 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.The MIC2103/04 offers a full suite of protection features to ensure protection of the IC during fault conditions. These include under-voltage lockout to ensure proper operation under power-sag conditions, internal soft-start to reduce inrush current, fold-back current limit, \"hiccup\" mode short-circuit protection and thermal shutdown.

特性 Features

? Hyper Speed Control? architecture enables
? High delta V operation (V IN=75V and VOUT=1.2V)
? Any Capacitor? stable
? 4.5V to 75V input voltage
? 0.8V Reference Voltage with ±1% accuracy
? 200kHz to 600kHz, programmable switching frequency
? Hyper Light Load Control (MIC2103 only)
? Hyper Speed Control (MIC2104 only)
? Enable input, Power-Good output
? Built-in 5V regulator for single-supply operation
? Programmable current limit and fold-back \"hiccup\"? mode short-circuit protection
? 5ms internal soft-start, internal compensation, and thermal shutdown
? Supports safe start-up into a pre-biased output
? -40°C to +125°C junction temperature range

簡(jiǎn)介

MIC2103屬于集成電路（IC）的DC-DC開(kāi)關(guān)控制器。由制造生產(chǎn)的MIC2103DC-DC 開(kāi)關(guān)控制器PMIC（電源管理集成電路）DC 到 DC 開(kāi)關(guān)式控制器是用于高效率電路的穩(wěn)壓 IC，其配置為生成高于（突升或步升）或低于（突降或步降）輸入電源的輸出電源電壓。其他拓?fù)浣Y(jié)構(gòu)可能包括：降壓-升壓、反激、正激、Cuk、SEPIC、全橋、半橋和推挽式。這些器件不同于需要最小電壓并“燒盡”多余電壓的線性穩(wěn)壓器。