TPS63900 1.8-V to 5.5-V, 75-nA IQ Buck-boost Converter with Input Current Limit and DVS

1 Features

Input voltage range: 1.8 V to 5.5 V
Output voltage range: 1.8 V to 5 V (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 (typical 1.45-A peak switching current limit)
- 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
Safety and 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 of 21-mm²
- Small 2.2-µH inductor, single 22-µF output capacitor
- 10-Pin, 2.5-mm × 2.5-mm, 0.5-mm pitch WSON package