DESCRIPTION

The LT®3470 is a micropower step-down DC/DC converter that integrates a 300mA power switch, catch diode and boost diode into low profile 3mm × 2mm DD and ThinSOT™ packages. The LT3470 combines Burst Mode and continuous operation to allow the use of tiny inductor and capacitors while providing a low ripple output to loads of up to 200mA.

FEATURES

■ Low Quiescent Current: 26µA at 12VIN to 3.3VOUT

■ Integrated Boost and Catch Diodes

■ Input Range: 4V to 40V

■ Low Output Ripple: <10mV

■ <1µA in Shutdown Mode

■ Output Voltage: 1.25V to 16V

■ 200mA Output Current

■ Hysteretic Mode Control

– Low Ripple Burst Mode® Operation at Light Loads

– Continuous Operation at Higher Loads

■ Solution Size as Small as 50mm2

■ Low Profile (0.75mm) 3mm × 2mm Thermally Enhanced 8-Lead DD and 1mm ThinSOT Packages

APPLICATIONS

■ Automotive Battery Regulation

■ Power for Portable Products

■ Distributed Supply Regulation

■ Industrial Supplies

■ Wall Transformer Regulation