STMicroelectronics ST1PS02
ST1PS02 - 400 mA nano-quiescent synchronous step-down converter with digital voltage selection, Power Good and AUX switch
The ST1PS02 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 1.0 V to 3.3 V can be dynamically selected. Thanks to the enhanced PCC (peak current control) the ST1PS02 reaches very high efficiency conversion using just a 2.2 µH inductor and two small capacitors. The device embeds a controlled load switch to supply a subsystem with same voltage rail. Advanced design circuitry is implemented to minimize the quiescent current. The device is available in thin plastic package.
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.
- Settable inductor current limitation
- Selectable output voltages: 1.0 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)
- Auxiliary load switch Vout2 (AUX control input)
- Available in TQFN12 package
STEVAL-1PS02A - Evaluation board based on ST1PS02AQTR 400 mA nano-quiescent synchronous step-down converter with AUX switch
The STEVAL-1PS02A evaluation board allows evaluation of a smart converter design able to deliver up to 400 mA output current from a 1.8 V to 5.5 V input, with a dynamically adjustable 1.4 V to 1.75 V output voltage. The board embeds the ST1PS02AQTR nano-quiescent miniaturized synchronous step-down converter which implements enhanced peak current control (PCC) and advanced design circuitry to minimize quiescent current. It features a controlled load switch to supply a subsystem with the same voltage rail. The device is supplied in TQFN12 (2.0x1.7 mm) thin package, but other packages are also available.
The board demonstrates how highly efficient conversion can be achieved using just the ST1PS02AQTR, a 2.2 μH inductor and two small capacitors.
The board highlights ST1PS02AQTR key application benefits, including high efficiency and small PCB size and thickness, and is ideal for power conversion solutions in wearable applications, fitness accessories, personal tracking monitors, smart watches, sports bands, energy harvesting, wireless sensors, industrial sensors, portable low power devices, single cell Li-Ion battery applications as well as Bluetooth® low energy and Zigbee applications.
Features
- 1.8 to 5.5 V input operating range
- Up to 400 mA output current capability
- Tiny external components: L = 2.2 µH typ.
- Dynamically selectable output voltages from 1.4 to 1.75 V
- Output voltage power good
- Auxiliary load switch Vout2 (AUX control input)
- WEEE and RoHS compliant (hardware only)
STEVAL-1PS02B - Evaluation board based on ST1PS02BQTR 400 mA nano-quiescent synchronous step-down converter with AUX switch
The STEVAL-1PS02B evaluation board demonstrates a smart converter design able to deliver up to 400 mA output current from a 1.8 V to 5.5 V input, with a dynamically adjustable1.8 V to 2.5 V output voltage. The board features the ST1PS02BQTR nano-quiescent miniaturized synchronous step-down converter which implements enhanced peak current control (PCC) and advanced design circuitry to minimize quiescent current. The device embeds a controlled load switch to supply a subsystem with same voltage rail.
The board demonstrates how highly efficient conversion can be achieved with just the ST1PS02BQTR, a 2.2 µH inductor and two small capacitors.
The board highlights key application benefits made possible by the ST1PS02BQTR, including high efficiency and small PCB size and thickness, and is ideal for power management solutions in wearable applications and fitness accessories, personal tracking monitors, smart watches, sports bands, energy harvesting, wireless sensors, industrial sensors, portable low power devices, single cell Li-Ion battery applications, and Bluetooth® low energy and Zigbee applications.
The device used on this board is supplied in the thin TQFN12 (2.0x1.7 mm) package, but other packages are also available.
Features
- 1.8 V to 5.5 V input operating range
- Up to 400 mA output current capability
- Tiny external components: L=2.2 µH typ.
- Dynamically selectable output voltages from 1.8 V to 2.5 V
- Output voltage Power Good
- Auxiliary load switch Vout2 (AUX control input)
- WEEE and RoHS compliant (hardware only)
STEVAL-1PS02C - Evaluation board based on ST1PS02CQTR 400 mA nano-quiescent synchronous step-down converter with AUX switch
The STEVAL-1PS02C evaluation board allows evaluation of a smart converter design able to deliver up to 400 mA output current from a 1.8 to 5.5 V input, with a dynamically adjustable 2.6 to 3.3 V output voltage. The board embeds the ST1PS02CQTR nano-quiescent miniaturized synchronous step-down converter which implements enhanced peak current control (PCC) and advanced design circuitry to minimize quiescent current. It features a controlled load switch to supply a subsystem with the same voltage rail. The device is supplied in TQFN12 (2.0x1.7 mm) thin package, but other packages are also available.
The board demonstrates how highly efficient conversion can be achieved using just the ST1PS02CQTR, a 2.2 μH inductor and two small capacitors.
The board highlights ST1PS02CQTR key application benefits, including high efficiency and small PCB size and thickness, and is ideal for power conversion solutions in wearable applications, fitness accessories, personal tracking monitors, smart watches, sports bands, energy harvesting, wireless sensors, industrial sensors, portable low power devices, single cell Li-Ion battery applications and Bluetooth® low energy and Zigbee applications.
Features
- 1.8 to 5.5 V input operating range
- Up to 400 mA output current capability
- Tiny external components: L = 2.2 µH typ.
- Dynamically selectable output voltages from 2.6 to 3.3 V
- Output voltage power good
- Auxiliary load switch Vout2 (AUX control input)
- WEEE and RoHS compliant (hardware only)
STEVAL-1PS02D - Evaluation board based on ST1PS02DQTR 400 mA nano-quiescent synchronous step-down converter with AUX switch
The STEVAL-1PS02D evaluation board allows evaluation of a smart converter able to deliver up to 400 mA output current from a 1.8 to 5.5 V input, with a dynamically adjustable 1.0 to 1.35 V output voltage. The board embeds the ST1PS02DQTR nano-quiescent miniaturized synchronous step-down converter which implements enhanced peak current control (PCC) and advanced design circuitry to minimize quiescent current. It features a controlled load switch to supply a subsystem with the same voltage rail. The device is supplied in TQFN12 (2.0x1.7 mm) thin package, but other packages are also available.
The board demonstrates how highly efficient conversion can be achieved using just the ST1PS02DQTR, a 2.2 μH inductor and two small capacitors.
The board highlights the key application benefits of the ST1PS02DQTR, including high efficiency and small PCB size and thickness, and is ideal for power conversion solutions in wearable applications, fitness accessories, personal tracking monitors, smart watches, sport bands, energy harvesting, wireless sensors, industrial sensors, portable low power devices, single cell Li-Ion battery applications, as well as Bluetooth low energy and Zigbee applications.
Features
- 1.8 to 5.5 V input operating range
- Up to 400 mA output current capability
- Tiny external components: L = 2.2 µH typ.
- Dynamically selectable output voltages from 1.0 to 1.35 V
- Output voltage power good
- Auxiliary load switch Vout2 (AUX control input)
- WEEE and RoHS compliant (hardware only)
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