LTC3250-1.2

The LTC3250-1.2 is charge pump stepdown DC/DC converters that produce a 1.5V or 1.2V regulated output from a 2.7V to 5.5V input. The parts use switched capacitor fractional conversion to achieve typical efficiency two times higher than that of a linear regulator.No inductors are required.A unique constant frequency architecture provides a low noise regulated output as well as lower input noise than conventional charge pump regulators.* High frequency operation (fOSC = 1.5MHz) simplifies filtering to further reduce conducted noise. The part also uses Burst Mode® operation to improve efficiency at light loads.Low operating current (35mA with no load, <1mA in shutdown) and low external parts count (three small ceramic capacitors) make the LTC3250-1.2 ideally suited for space constrained battery powered applications.The parts are short-circuit and overtemperature protected, and are available in a low profile (1mm) 6-pin ThinSOTTM package.

The LTC3250-1.2 has some absolute maximum ratings.The VIN to GND is -0.3V to 6V.The SHDN to GND is -0.3V to (VIN +0.3V).The IOUT is 350mA.The operating ambient range is -40 to 85.The storage temperature range -65 to 150.The lead temperature(soldering,10 sec) is 300.

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