The ST1PS01AJR is a nano-quiescent miniaturized synchronous step-down converter, which is able to provide up to 400 mA output current with an input voltage ranging from 1.8 V to 5.5 V. This converter is specifically designed for applications where high efficiency, PCB size and thickness are the key factors. The output voltage can be set using two digital control inputs, a VOUT from 1.8 V to 3.3 V can be dynamically selected. Thanks to the enhanced PCC (peak current control) the ST1PS01AJR reaches very high efficiency conversion using just a 2.2 μH inductor and two small capacitors. Advanced design circuitry is implemented to minimize the quiescent current. The device is available in Flip-Chip package.
Feature
- 500 nA input quiescent current at VIN=3.6 V (not switching)
- 94% typical efficiency at 1 mA load (VIN=3.6 V, VOUT=3.3 V)
- 100% duty cycle
- 1.8 V to 5.5 V input operating range
- Undervoltage lockout: 1.57 V (VIN falling, typ.)
- Up to 400 mA output current capability
- Low power control operation for the best efficiency
