Product overview
Description
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.
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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.
- 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
eDesignSuite
eDesignSuite is a comprehensive set of easy-to-use design-aid utilities ready to help you streamline the system development process with a wide range of ST products.
Power Management Design Center
Thermal-electrical Simulators for Components
Signal Conditioning Design Tool
NFC/RFID Calculators
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Power Management Design Center
Power Supply Design Tool
• SMPS design, by topology, by type and by product
• PFC design with analog and digitial control
• Supports various PCB configurations
Choose type: DC/DC AC/DC Solar Battery Charger
Power Management Design Center
LED Lighting Design Tool
• Handles AC-DC and DC-DC design in common topologies
• Displays interactive and annotated schematic
• Provides current/voltage graphs, Bode plots, efficiency curves and power-loss data
Choose type: DC/DC AC/DC
Power Management Design Center
Digital Power Workbench
• Provides a step-by-step optimized design of power section and control loop
• Generates the STM32Cube embedded software package for custom applications and allows firmware project generation, compatible with multiple STM32 IDEs
Power Management Design Center
Power Tree Designer
• Specify input/output power for each node in the tree
• Check for consistency
• Design each individual node
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Thermal-electrical Simulators for Components
AC Switches Simulator
• Select ratings and application waveforms
• Get junction temperature and blocking voltage graphs
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Thermal-electrical Simulators for Components
Rectifier Diodes Simulator
• Select ratings and application waveforms
• Estimate power losses
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Thermal-electrical Simulators for Components
STPOWER Studio
• Supports long mission profiles
• Provides power loss and temperature graphs
• Helps define heatsink thermal properties
Thermal-electrical Simulators for Components
Twister Sim
• Help select the right ViPOWER Automotive power device
• Supports load-compatibility, wiring harness optimization, fault condition impact and diagnostic analysis
• Supports various PCB configurations
Thermal-electrical Simulators for Components
TVS Simulator
• Specify system ratings and surge waveform
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Thermal-electrical Simulators for Components
Estimate
• Build simple schematics and firmware inputs in minutes
• Quickly generate reliable estimates of battery life, system power consumption and bill of materials costs
Thermal-electrical Simulators for Components
PCB Thermal Simulator
• Thermal analysis of a PCB from Gerber files.
• Possibility to add heat sources, heat sinks, copper areas and thermal paths.
• Powerful server-side engine for rendering and simulation.
• Thermal results shown graphically via 2D table.
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Signal Conditioning Design Tool
Active Filters
• Handles multi-stage-designs and common topologies
• Returns circuit component values
• Provides gain, phase and group delay graphs
• Low Pass, High Pass and Band Pass
Signal Conditioning Design Tool
Comparators
• Handles most common configurations
• Returns circuit components values
• Provides I/O signal waveforms
• Inverting, Non Inverting, Window
Signal Conditioning Design Tool
Low side Current Sensing
• Returns circuit component values
• Provides current error graphs
Signal Conditioning Design Tool
High side Current Sensing
• Provides current error graphs.
• Help to select the right High side current sensing and shunt devices.
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NFC/RFID Calculators
NFC Inductance
• Input geometry and substrate properties
• Get antenna impedance
NFC/RFID Calculators
UHF Link Budget
• Enter forward and reverse link characteristics
• The tool returns link budget estimate
NFC/RFID Calculators
NFC Tuning Circuit
• Enter antenna parameter and matching target
• Select the topology of the matching network
• The tool returns component values for the desired design targets
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All resources
| Resource title | Version | Latest update |
|---|
Product Specifications (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 5.0 | 31 Oct 2024 | 31 Oct 2024 |
Application Notes (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 1.0 | 12 Mar 2021 | 12 Mar 2021 |
Technical Notes & Articles (2)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 2.4 | 11 Jul 2023 | 11 Jul 2023 | ||
| 1.0 | 02 May 2023 | 02 May 2023 |
Application Notes for related Tools & Software (3)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 1.0 | 13 Nov 2023 | 13 Nov 2023 | ||
| 1.0 | 04 Apr 2025 | 04 Apr 2025 | ||
| 1.0 | 08 Mar 2024 | 08 Mar 2024 |
Presentations (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 2.2 | 02 Aug 2023 | 02 Aug 2023 |
Flyers (3)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 2.0 | 05 Mar 2025 | 05 Mar 2025 | ||
| 2.0 | 30 Mar 2022 | 30 Mar 2022 | ||
| 1.0 | 22 Dec 2023 | 22 Dec 2023 |
Brochures (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 6.0 | 30 Jul 2024 | 30 Jul 2024 |
EDA Symbols, Footprints and 3D Models
STMicroelectronics - ST1PS02
Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.
Please select one model supplier :
Symbols
Footprints
3D models
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** |
|---|---|---|---|---|---|
| ST1PS02A1QTR | Active | MLPQ/QFN 1.7x2.0x0.55 12L P0.4 | Industrial | Ecopack2 | |
| ST1PS02AQTR | Active | MLPQ/QFN 1.7x2.0x0.55 12L P0.4 | Industrial | Ecopack2 | |
| ST1PS02B1QTR | Active | MLPQ/QFN 1.7x2.0x0.55 12L P0.4 | Industrial | Ecopack2 | |
| ST1PS02BQTR | Active | MLPQ/QFN 1.7x2.0x0.55 12L P0.4 | Industrial | Ecopack2 | |
| ST1PS02C1QTR | Active | MLPQ/QFN 1.7x2.0x0.55 12L P0.4 | Industrial | Ecopack2 | |
| ST1PS02CQTR | Active | MLPQ/QFN 1.7x2.0x0.55 12L P0.4 | Industrial | Ecopack2 | |
| ST1PS02D1QTR | Active | MLPQ/QFN 1.7x2.0x0.55 12L P0.4 | Industrial | Ecopack2 | |
| ST1PS02DQTR | Active | MLPQ/QFN 1.7x2.0x0.55 12L P0.4 | Industrial | Ecopack2 | |
ST1PS02A1QTR
Package:
MLPQ/QFN 1.7x2.0x0.55 12L P0.4Material Declaration**:
ST1PS02AQTR
Package:
MLPQ/QFN 1.7x2.0x0.55 12L P0.4Material Declaration**:
ST1PS02B1QTR
Package:
MLPQ/QFN 1.7x2.0x0.55 12L P0.4Material Declaration**:
ST1PS02C1QTR
Package:
MLPQ/QFN 1.7x2.0x0.55 12L P0.4Material Declaration**:
ST1PS02CQTR
Package:
MLPQ/QFN 1.7x2.0x0.55 12L P0.4Material Declaration**:
ST1PS02D1QTR
Package:
MLPQ/QFN 1.7x2.0x0.55 12L P0.4Material Declaration**:
XMLST1PS02DQTR
Package:
MLPQ/QFN 1.7x2.0x0.55 12L P0.4Material Declaration**:
(**) 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
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| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ST1PS02B1QTR | Active | 0.5209 / 1k | 3 distributors | MLPQ/QFN 1.7x2.0x0.55 12L P0.4 | Tape and Reel | CHINA | EAR99 | NEC | |||||
| ST1PS02C1QTR | Active | 0.5209 / 1k | 4 distributors | MLPQ/QFN 1.7x2.0x0.55 12L P0.4 | Tape and Reel | CHINA | EAR99 | NEC | |||||
| ST1PS02DQTR | Active | 0.5209 / 1k | 5 distributors | MLPQ/QFN 1.7x2.0x0.55 12L P0.4 | Tape and Reel | CHINA | EAR99 | NEC | |||||
| ST1PS02D1QTR | Active | 0.5209 / 1k | 1 distributors | MLPQ/QFN 1.7x2.0x0.55 12L P0.4 | Tape and Reel | CHINA | EAR99 | NEC | |||||
| ST1PS02AQTR | Active | 0.5209 / 1k | 4 distributors | MLPQ/QFN 1.7x2.0x0.55 12L P0.4 | Tape and Reel | CHINA | EAR99 | NEC | |||||
| ST1PS02BQTR | Active | 0.5209 / 1k | 4 distributors | MLPQ/QFN 1.7x2.0x0.55 12L P0.4 | Tape and Reel | CHINA | EAR99 | NEC | |||||
| ST1PS02A1QTR | Active | 0.5209 / 1k | 4 distributors | MLPQ/QFN 1.7x2.0x0.55 12L P0.4 | Tape and Reel | CHINA | EAR99 | NEC | |||||
| ST1PS02CQTR | Active | 0.5209 / 1k | 5 distributors | MLPQ/QFN 1.7x2.0x0.55 12L P0.4 | Tape and Reel | CHINA | EAR99 | NEC |
ST1PS02B1QTR Active
Budgetary Price (US$)*/Qty:
0.5209 / 1k
Package:
MLPQ/QFN 1.7x2.0x0.55 12L P0.4
Packing Type:
Tape and Reel
Country of Origin:
CHINA
ECCN (US):
EAR99
ECCN (EU):
NEC
ST1PS02C1QTR Active
Budgetary Price (US$)*/Qty:
0.5209 / 1k
Package:
MLPQ/QFN 1.7x2.0x0.55 12L P0.4
Packing Type:
Tape and Reel
Country of Origin:
CHINA
ECCN (US):
EAR99
ECCN (EU):
NEC
ST1PS02DQTR Active
Budgetary Price (US$)*/Qty:
0.5209 / 1k
Package:
MLPQ/QFN 1.7x2.0x0.55 12L P0.4
Packing Type:
Tape and Reel
Country of Origin:
CHINA
ECCN (US):
EAR99
ECCN (EU):
NEC
ST1PS02D1QTR Active
Budgetary Price (US$)*/Qty:
0.5209 / 1k
Package:
MLPQ/QFN 1.7x2.0x0.55 12L P0.4
Packing Type:
Tape and Reel
Country of Origin:
CHINA
ECCN (US):
EAR99
ECCN (EU):
NEC
ST1PS02AQTR Active
Budgetary Price (US$)*/Qty:
0.5209 / 1k
Package:
MLPQ/QFN 1.7x2.0x0.55 12L P0.4
Packing Type:
Tape and Reel
Country of Origin:
CHINA
ECCN (US):
EAR99
ECCN (EU):
NEC
ST1PS02BQTR Active
Budgetary Price (US$)*/Qty:
0.5209 / 1k
Package:
MLPQ/QFN 1.7x2.0x0.55 12L P0.4
Packing Type:
Tape and Reel
Country of Origin:
CHINA
ECCN (US):
EAR99
ECCN (EU):
NEC
ST1PS02A1QTR Active
Budgetary Price (US$)*/Qty:
0.5209 / 1k
Package:
MLPQ/QFN 1.7x2.0x0.55 12L P0.4
Packing Type:
Tape and Reel
Country of Origin:
CHINA
ECCN (US):
EAR99
ECCN (EU):
NEC
ST1PS02CQTR Active
Budgetary Price (US$)*/Qty:
0.5209 / 1k
Package:
MLPQ/QFN 1.7x2.0x0.55 12L P0.4
Packing Type:
Tape and Reel
Country of Origin:
CHINA
ECCN (US):
EAR99
ECCN (EU):
NEC
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(*) 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