ST1PS01 Datasheet | STMicroelectronics

400 m A nano-quiescent synchronous step-down converter with digital voltage selection and Power Good Product status link ST1PS01 Features - 500 n A input quiescent current at VIN=3.6 V (not switching) - 94% typical efficiency at 1 m A 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 m A output current capability - Low power control operation for the best efficiency - Embedded soft-start circuit - Tiny external ponents: L=2.2 µH typ. - Selectable output voltages: 0.625 V to 3.3 V - Output voltage Power Good - ±1.5% output voltage accuracy (VOUT, TA = 25 °C) - Dynamic output voltage selection (D0, D1) - Available in Flip-Chip package Applications - Wearable applications - Personal tracking monitors - Smart watches, sport bands - Energy harvesting, wireless sensors - Wearable and fitness accessories - Industrial sensors, portable low power devices - Single cell Li-Ion battery applications - Bluetooth® low energy - Zigbee Description The ST1PS01 is a nano-quiescent miniaturized synchronous step-down converter, which is able to provide up to 400 m A 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 0.625 V to 3.3 V can be dynamically selected. Thanks to the enhanced PCC (peak current control) the ST1PS01 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...