ST1PS03

Active
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400 mA nano-quiescent synchronous step-down converter with digital voltage selection, Power Good and independent Load Switch

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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.
  • 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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All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      STSW-eDSim

      Active

      eDSim: fast and powerful electrical simulation software for SMPS and analog ICs

      Evaluation Tool Software ST
      STSW-eDSim

      Description:

      eDSim: fast and powerful electrical simulation software for SMPS and analog ICs
    • Part number
      Status
      Description
      Type
      Supplier

      STEVAL-1PS03A

      Active

      Evaluation board based on ST1PS03AQTR 400 mA nano-quiescent synchronous step-down converter with load switch

      DC-DC Converter ST
      STEVAL-1PS03A

      Description:

      Evaluation board based on ST1PS03AQTR 400 mA nano-quiescent synchronous step-down converter with load switch

EDA Symbols, Footprints and 3D Models

STMicroelectronics - ST1PS03

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.

Symbols

Symbols

Footprints

Footprints

3D model

3D models

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

ST1PS03A1QTR

Package:

MLPQ/QFN 1.7x2.0x0.55 12L P0.4

Material Declaration**:

PDF XML

Marketing Status

Active

Package

MLPQ/QFN 1.7x2.0x0.55 12L P0.4

Grade

Industrial

RoHS Compliance Grade

Ecopack2

ST1PS03AQTR

Package:

MLPQ/QFN 1.7x2.0x0.55 12L P0.4

Material Declaration**:

PDF XML

Marketing Status

Active

Package

MLPQ/QFN 1.7x2.0x0.55 12L P0.4

Grade

Industrial

RoHS Compliance Grade

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.

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 Supply Design Tool

SMPS design, by topology, by type and by product
PFC design with analog and digitial control
Supports various PCB configurations
Power Supply
Choose type:
Input Specification
Input Specification
V
This option is required. And must be less than or equal to Volt. Max [V]
V
This option is required. And must be greater than or equal to Volt. Min [V]
Output
V
this option is required
A
this option is required
Output Power: 0

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
ST1PS03A1QTR Available at 4 distributors

Distributor availability ofST1PS03A1QTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 430 1 Buy from Distributor
RS COMPONENTS EUROPE 3000 1 Buy from Distributor
MOUSER WORLDWIDE 183 1 Buy from Distributor
Farnell Element14 EUROPE 300 1 Buy from Distributor

Distributor reported inventory date: 2022-05-25

Distributor Name

DIGIKEY

Stock

430

Min.Order

1

Region

WORLDWIDE Buy from Distributor

RS COMPONENTS

Stock

3000

Min.Order

1

MOUSER

Stock

183

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

300

Min.Order

1

Distributor reported inventory date: 2022-05-25

Active
EAR99 NEC Tape And Reel MLPQ/QFN 1.7x2.0x0.55 12L P0.4 - - CHINA
ST1PS03AQTR Available at 4 distributors

Distributor availability ofST1PS03AQTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 290 1 Buy from Distributor
RS COMPONENTS EUROPE 2635 1 Buy from Distributor
MOUSER WORLDWIDE 273 1 Buy from Distributor
Farnell Element14 EUROPE 295 1 Buy from Distributor

Distributor reported inventory date: 2022-05-25

Distributor Name

DIGIKEY

Stock

290

Min.Order

1

Region

WORLDWIDE Buy from Distributor

RS COMPONENTS

Stock

2635

Min.Order

1

MOUSER

Stock

273

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

295

Min.Order

1

Distributor reported inventory date: 2022-05-25

Active
EAR99 NEC Tape And Reel MLPQ/QFN 1.7x2.0x0.55 12L P0.4 - - CHINA

ST1PS03A1QTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

Distributor availability ofST1PS03A1QTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 430 1 Buy from Distributor
RS COMPONENTS EUROPE 3000 1 Buy from Distributor
MOUSER WORLDWIDE 183 1 Buy from Distributor
Farnell Element14 EUROPE 300 1 Buy from Distributor

Distributor reported inventory date: 2022-05-25

Distributor Name

DIGIKEY

Stock

430

Min.Order

1

Region

WORLDWIDE Buy from Distributor

RS COMPONENTS

Stock

3000

Min.Order

1

MOUSER

Stock

183

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

300

Min.Order

1

Distributor reported inventory date: 2022-05-25

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

MLPQ/QFN 1.7x2.0x0.55 12L P0.4

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

Country of Origin

CHINA

ST1PS03AQTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

Distributor availability ofST1PS03AQTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 290 1 Buy from Distributor
RS COMPONENTS EUROPE 2635 1 Buy from Distributor
MOUSER WORLDWIDE 273 1 Buy from Distributor
Farnell Element14 EUROPE 295 1 Buy from Distributor

Distributor reported inventory date: 2022-05-25

Distributor Name

DIGIKEY

Stock

290

Min.Order

1

Region

WORLDWIDE Buy from Distributor

RS COMPONENTS

Stock

2635

Min.Order

1

MOUSER

Stock

273

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

295

Min.Order

1

Distributor reported inventory date: 2022-05-25

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

MLPQ/QFN 1.7x2.0x0.55 12L P0.4

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

Country of Origin

CHINA

(*) 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