ST1PS02 Synchronous Step-Down Converter

STMicroelectronics ST1PS02 Synchronous Step-Down Converter provides up to 400mA output current with an input voltage ranging from 1.8V to 5.5V. This nano-quiescent step-down converter is specifically designed for applications where high efficiency, PCB size, and PCB 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 peak current control PCC), the STMicroelectronics ST1PS02 reaches very high-efficiency conversion using a 2.2µH inductor and two small capacitors. This device embeds a controlled load switch to supply a subsystem with the same voltage rail. Advanced design circuitry is implemented to minimize the quiescent current.

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Description Datasheet Availability Pricing (CAD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Mounting Style
Package / Case
Topology
Output Voltage
Output Current
Number of Outputs
Quiescent Current
Switching Frequency
Minimum Operating Temperature
Maximum Operating Temperature
Series
Packaging
STMicroelectronics Switching Voltage Regulators 400 mA nano-quiescent synchronous step-down converter with digital voltage selec
Datasheet
4,751In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT TQFN-12 Buck 1 V to 3.3 V 400 mA 1 Output 500 nA 2 MHz - 40 C + 85 C ST1PS02 Reel, Cut Tape, MouseReel
STMicroelectronics Switching Voltage Regulators 400 mA nano-quiescent synchronous step-down converter with digital voltage selec
Datasheet
2,373In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT TQFN-12 Buck 2.6 V to 3.3 V 400 mA 1 Output 500 nA 2 MHz - 40 C + 85 C ST1PS02 Reel, Cut Tape, MouseReel
STMicroelectronics Switching Voltage Regulators 400 mA nano-quiescent synchronous step-down converter with digital voltage selec
Datasheet
1,952In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT TQFN-12 Buck 1.4 V to 1.75 V 400 mA 1 Output 500 nA 2 MHz - 40 C + 85 C ST1PS02 Reel, Cut Tape, MouseReel
STMicroelectronics Switching Voltage Regulators 400 mA nano-quiescent synchronous step-down converter with digital voltage selec
Datasheet
2,978In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT TQFN-12 Buck 1.8 V to 2.5 V 400 mA 1 Output 500 nA 2 MHz - 40 C + 85 C ST1PS02 Reel, Cut Tape, MouseReel
STMicroelectronics Switching Voltage Regulators 400 mA nano-quiescent synchronous step-down converter with digital voltage selec
Datasheet
1,992In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT TQFN-12 Buck 1.4 V to 1.75 V 400 mA 1 Output 500 nA 2 MHz - 40 C + 85 C ST1PS02 Reel, Cut Tape, MouseReel
STMicroelectronics Switching Voltage Regulators 400 mA nano-quiescent synchronous step-down converter with digital voltage selec
Datasheet
3,230In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT TQFN-12 Buck 1 V to 1.35 V 400 mA 1 Output 500 nA 2 MHz - 40 C + 85 C ST1PS02 Reel, Cut Tape, MouseReel
STMicroelectronics Switching Voltage Regulators 400 mA nano-quiescent synchronous step-down converter with digital voltage selec
Datasheet
573In Stock
3,000Expected 2026-08-31
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT TQFN-12 Buck 2.6 V to 3.3 V 400 mA 1 Output 500 nA 2 MHz - 40 C + 85 C ST1PS02 Reel, Cut Tape, MouseReel
STMicroelectronics Switching Voltage Regulators 400 mA nano-quiescent synchronous step-down converter with digital voltage selec
Datasheet
328In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT TQFN-12 Buck 1 V to 1.35 V 400 mA 1 Output 500 nA 2 MHz - 40 C + 85 C ST1PS02 Reel, Cut Tape, MouseReel