DC1483A

LINEAR TECHNOLOGY  DC1483A  演示板, LTC3535 升压转换器

is an demonstration board to evaluate the LTC3535 performance. The LTC3535 is a dual channel, synchronous, fixed frequency step up DC/DC converter with output disconnect. Extended battery life in single AA/AAA powered products is realized with a 680mV start up voltage and operation down to 500mV once started. A switching frequency of 1MHz minimizes solution footprint by allowing the use of tiny, low profile inductors and ceramic capacitors. The current mode PWM design is internally compensated, reducing external parts count. The IC features Burst Mode operation at light load conditions allowing it to maintain high efficiency over a wide range of load. Anti-ring circuitry reduces EMI by damping the inductor in discontinuous mode. Individual jumpers are provided in board for selecting a variety of output voltages from 1.8V to 5V. Jumpers also allow separate low quiescent current shutdown and the ability to parallel the inputs.

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Two independent step up converters

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Up to 94% efficiency

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Output disconnect

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Integrated softstart

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Current mode control with internal compensation

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Internal synchronous rectifier

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Logic controlled shutdown