STMicroelectronics ST1PS01 Synchronous Step-Down Converter
STMicroelectronics ST1PS01 Synchronous Step-Down Converter is a nano-quiescent miniaturized synchronous step-down converter. This device is able to provide up to 400mA output current with an input voltage ranging from 1.8V to 5.5V. 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 1.8V to 3.3V can be dynamically selected. Thanks to the enhanced PCC (peak current control) the STMicroelectronics ST1PS01 Synchronous Step-Down Converter reaches very high-efficiency conversion using just a 2.2µH inductor and two small capacitors. Advanced design circuitry is implemented to minimize the quiescent current.
Features
- 500nA input quiescent current at VIN = 3.6V (not switching)
- 94% typical efficiency at 1mA load (VIN = 3.6V, VOUT = 3.3V)
- 100% duty cycle
- 1.8V to 5.5V input operating range
- 1.57V (VIN falling, typ.) undervoltage lockout
- Up to 400mA output current capability
- Low power control operation for the best efficiency
- Embedded soft-start circuit
- L = 2.2µH (typ.) external components
- 1.8V to 3.3V selectable output voltages
- 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
Block Diagram
Videos
Development Tools
STMicroelectronics STEVAL-1PS01EJR Evaluation Board
Features ST1PS01 nano-quiescent miniaturized synchronous step-down converter.
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STMicroelectronics ST1PS02 Synchronous Step-Down Converter
Nano-Quiescent Synchronous step-down converter with digital voltage selection, Power Good, and AUX.
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Publicado: 2018-11-08
| Actualizado: 2023-02-21