Description

Wide Input Voltage Synchronous Buck-Boost DC/DC Converter Features: Regulated Output with Input Voltages Above, Below or Equal to the Output 1.8V to 5.5V Input and 1.8V to 5.25V Output Range 250mA Continuous Output Current from 1.8V VIN 600mA Continuous/1A Peak Output Current from Li-Ion Single Inductor Synchronous Rectication: Up to 96% Efciency Programmable Automatic Burst Mode® Operation Output Disconnect in Shutdown Pin Compatible with the LTC3440 Programmable Frequency from 300kHz to 2MHz <1µA Shutdown Current Small Thermally Enhanced 10-Lead (3mm × 3mm) DFN and 10-Lead MS Packages