FAN2002MPX

FAIRCHILD SEMICONDUCTOR  FAN2002MPX  直流-直流开关降压逐步递减稳压器, 可调, 2.5V-5.5V输入, 800mV-5.5V输出, 1A输出, MLP-6

The is a high-efficiency step-down DC-to-DC Converter designed for use in battery-powered applications. The FAN2002 is a low-noise synchronous PWM current-mode and pulse skip power save mode DC-DC converter. It can provide up to 1A of output current over a wide input range from 2.5 to 5.5V. The output voltage can be externally adjusted over a wide range of 0.8 to 5.5V by means of an external voltage divider. At moderate and light loads, pulse skipping modulation is used. Dynamic voltage positioning is applied and the output voltage is shifted 0.8% above nominal value for increased headroom during load transients. At higher loads the system automatically switches over to current mode PWM control, operating at 1.3MHz. A current-mode control loop with fast transient response ensures excellent line and load regulation. To achieve high efficiency and ensure long battery life, the quiescent current is reduced to 25µA in power save mode.

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High efficiency power save mode

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100% Duty cycle low dropout operation

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soft-start

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Output overvoltage protection

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Dynamic output voltage positioning

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Thermal shutdown and short circuit protection

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96% Efficiency and synchronous operation

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Supply current drops below 1µA in shut-down mode