LTC3528EDDB-2#PBF

LINEAR TECHNOLOGY  LTC3528EDDB-2#PBF  直流-直流开关升压逐步递增稳压器, 可调, 500mV-5.5V输入, 1.6V-5.25V输出, 1A输出, DFN-8

The is a synchronous fixed frequency step-up DC-to-DC Converter with output disconnect. High efficiency synchronous rectification, in addition to a 700mV start-up voltage and operation down to 500mV once started, provides longer run time for single or multiple cell battery-powered products. A switching frequency of 1MHz minimizes solution footprint by allowing the use of tiny, low profile inductors and ceramic capacitors. The current-mode PWM is internally compensated, simplifying the design process. The LTC3528 enters Burst Mode® operation at light loads. Anti-ringing circuitry reduces EMI by damping the inductor in discontinuous mode. Additional features include a low shutdown current, open-drain power good output, short-circuit protection and thermal overload protection.

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Output disconnect

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Integrated soft-start

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Current-mode control with internal compensation

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Burst Mode® operation with 12µA quiescent current

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Internal synchronous rectifier

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Logic controlled shutdown IQ<1µA

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Anti-ringing control

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Up to 94% efficiency

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Delivers 3.3V at 200mA from a single Alkaline/NiMH cell or 3.3V at 400mA from two cells