TPS63901 1.8-V to 5.5-V, 75-nA I_Q Buck-Boost Converter with Input Current Limit and DVS in a WCSP Package

1 Features

1.8-V to 5.5-V input voltage range
1.8-V to 5-V output voltage range (100-mV steps)
- Programmable with external resistors
- SEL pin to toggle between two output voltage presets
> 400-mA output current for V_I ≥ 2.0 V, V_O = 3.3 V
- Stackable: parallel multiple devices for higher output current
> 90% efficiency at 10-µA load current
- 75-nA quiescent current
- 60-nA shutdown current
Single-mode operation
- Eliminates mode transitions between buck, buck-boost and boost operation
- Low output ripple
- Excellent transient performance
Robust operation features
- Integrated soft start
- Programmable input current limit with eight settings (1 mA to 100 mA and unlimited)
- Output short-circuit and overtemperature protection
Tiny solution size
- Small 2.2-µH inductor, single 22-µF output capacitor
- 12-ball, 1.5-mm × 1.15-mm, 0.35-mm pitch WCSP package