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2.7V to 38V VIN Range, Low Noise, 250mA Buck-Boost Charge Pump Converter

Authored on: Mar 31, 2014 by George H. Barbehenn

Technical Paper / Application Note

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The LTC3245, a versatile 250mA high voltage buck-boost charge pump. The LTC3245 uses switched capacitor fractional conversion to maintain regulation over a wide range of input voltage from 2.7V to 38V and produces a regulated output of 3.3V, 5V or adjustable (2.5V to 5V). Internal circuitry automatically selects the conversion ratio (2:1, 1:1 or 1:2) to optimize efficiency as input voltage and load conditions vary. Low operating current (18µA with no load, 4µA in shutdown) and low external device count make the LTC3245 suited for low power, space constrained automotive/industrial applications.
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