STBB3J

STBB3J 2 A, high efficiency single inductor buck-boost DC-DC converter Datasheet - production data Flip Chip 20, pitch = 0.4 mm Features Input voltage range from 1.8 V to 5.5 V 2 A output current at 3.3 V in buck mode (VIN = 3.6 V to 5.5 V) 800 mA output current at 3.3 V in boost mode (VIN 2.0 V) Typical efficiency higher than 94% ± 2% DC feedback voltage tolerance Automatic transition between step-down and boost mode Adjustable output voltage from 1.2 V to 5.5 V Power save mode (PS) at light load 2.0 MHz fixed switching frequency Adjustable switching frequency up to 2.4 MHz (by external synchronous square signal) Device quiescent current less than 50 µA Load disconnect during shutdown Shutdown function and soft-start Shutdown current < 1 µA Available in Flip Chip 20, pitch = 0.4 mm Applications Single cell Li-Ion, two-cell and three-cell alkaline, Ni-MH powered devices Memory card supply Tablet, smartphones Digital cameras Description The STBB3J is a fixed frequency, high efficiency, buck-boost DC-DC converter which provides output voltages from 1.2 V to 5.5 V starting from input voltage from 1.8 V to 5.5 V. The device can operate with input voltages higher than, equal to, or lower than the output voltage making the product suitable for cell lithium-Ion applications where the output voltage is within the battery voltage range. The low-RDS(on) N-channel and Pchannel MOSFET switches are integrated and contribute to achieve high efficien...