STMicroelectronics ST1PS03
The ST1PS03 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 three digital control inputs, a VOUT from 1.6 V to 3.3 V can be dynamically selected.| Part No. | ST1PS03 |
|---|---|
| Datasheet | ST1PS03 Download |
| Manufacturer |  STMicroelectronics |
| Description | 400mA nano-quiescent synchronous step-down converter |
| Buy | Stock & Price |
FEATURES
● 500 nA input quiescent current at VIN = 3.6 V (not switching)● 92% typical efficiency at 10 mA load (VIN = 3.6 V, VOUT = 2.5 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
● Embedded soft-start circuit
● Tiny external components: L = 2.2 µH typ.
● Selectable output voltages: 1.6 V to 3.3 V
● Output voltage Power Good
● ±1.5% output voltage accuracy (VOUT, TA = 25 °C)
● Dynamic output voltage selection (D0, D1 and D2)
● Load switch controlled by AUX input
● Available in TQFN12 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
Thanks to the enhanced PCC (peak current control) the ST1PS03 reaches very high efficiency conversion using just a 2.2 µH inductor and two small capacitors.
