Product overview
Description
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. 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. An advanced design circuitry is developed to minimize the quiescent current. The device embeds a controlled switch accessible from VIN_AUX, to supply a subsystem. Finally, it is available in thin plastic package.
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All 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
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EDA Symbols, Footprints and 3D Models
STMicroelectronics - ST1PS03
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All resources
| Resource title | Version | Latest update |
|---|
SIMPLIS models (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| ZIP | 2023.07 | 02 Feb 2024 | 02 Feb 2024 |
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| ST1PS03A1QTR | Active | MLPQ/QFN 1.7x2.0x0.55 12L P0.4 | Industrial | Ecopack2 | |
| ST1PS03AQTR | Active | MLPQ/QFN 1.7x2.0x0.55 12L P0.4 | Industrial | Ecopack2 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ST1PS03A1QTR | | | distributors No availability of distributors reported, please contact our sales office | ||||||||||
| ST1PS03AQTR | | | distributors No availability of distributors reported, please contact our sales office |
ST1PS03A1QTR Active
ST1PS03AQTR Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors