1 Features

Wide voltage range and current range
- 0.7-V to 5.5-V input voltage range
- 1.8-V minimum input voltage for start-up
- Programmable boost output voltages, 2.7-V to 5.4-V setting range
- Programmable buck charging termination voltages, 1.7-V to 5.4-V setting range
- Programmable buck charging output currents, 2.5-mA to 600-mA setting range
Ultra-low quiescent current
- 60 nA in boost mode or buck charging mode
- 4 nA in forced bypass mode
High efficiency and power capability
- Typical 2.0-A inductor valley current limit
- Two 60-mΩ (LS) / 140-mΩ (HS) MOSFETs
- 100-mΩ bypass switch resistance
- 1-MHz switching frequency
- Auto snooze mode operation at light load
- Up to 92.3% efficiency at V_IN = 3 V, V_OUT = 3.6 V, and I_OUT = 10 μA
- Up to 96.3% efficiency at V_IN = 3 V, V_OUT = 3.6 V, and I_OUT = 100 mA
Four operation modes controlled by the MODE and EN pins
Rich protection
- Output short-circuit protection
- Thermal shutdown protection
2-mm × 3-mm 12-pin WSON package