The STBB1-AXX is a high-efficiency, single inductor dual mode buck-boost DC-DC converter designed for applications requiring input voltages ranging from 2.0 V to 5.5 V. It features integrated low-Rds(on) N-channel and P-channel MOSFET switches, achieving a typical efficiency greater than 94% and supporting a 1 A output current capability. The device operates at a fixed switching frequency of 1.5 MHz and includes features such as synchronous rectification, a shutdown function, and power save mode for light loads.
| Operating input voltage range | 2.0 V to 5.5 V |
|---|---|
| Output voltage range | 1.2 V to 5.5 V |
| Switching frequency | 1.5 MHz |
| Output current capability | 1 A |
| Typical efficiency | > 94% |
| Package type | DFN10 (3 x 3 mm) |
The device operates with input voltages from 2.0 V to 5.5 V.
It is suitable for single cell Li-ion, multicell alkaline or NiMH powered devices, SD/MMC memory card supply, palmtop computers, cell phones, and digital cameras.
The MODE pin allows selecting between auto mode and forced PWM mode.