MIC2290YML TR

MICREL SEMICONDUCTOR  MIC2290YML TR  直流-直流开关升压稳压器, 可调, 2.5V-10V输入, 3V-34V输出, 500mA输出, MLF-8

The is a PWM Boost Regulator feature an internal Schottky diode that reduces circuit board area. High power density is achieved with the MIC2290"s internal 34V/0.5A switch, allowing it to power large loads. The MIC2290 implements a constant frequency 1.2MHz PWM control scheme. The high frequency operation saves board space by reducing external component sizes. The fixed frequency PWM topology also reduces switching noise and ripple to the input power source. The MIC2290"s wide 2.5 to 10V input voltage allows direct operation from 3- to 4-cell NiCad/NiMH/Alkaline batteries, 1- and 2-cell Li-ion batteries, as well as fixed 3.3V and 5V systems.

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Stable with ceramic capacitors

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Low input and output ripple

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Undervoltage lockout UVLO

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Output overvoltage protection

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Over-temperature protection

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<1% Line and load regulation

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<1µA Shutdown current