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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Quality & Reliability
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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

      STEVAL-1PS03A

      Active

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

      PSU and Converter Solution Eval Boards 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

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Symbols

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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**:

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**:

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.

Converter

Input

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 Power

V This option is required and must be a number.
A This option is required and must be a number.

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 3 distributors

Distributor availability ofST1PS03A1QTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 490 1 Buy from Distributor
MOUSER WORLDWIDE 295 1 Buy from Distributor
Farnell Element14 EUROPE 300 1 Buy from Distributor

Distributor reported inventory date: 2021-12-05

Distributor Name

DIGIKEY

Stock

490

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

295

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

300

Min.Order

1

Distributor reported inventory date: 2021-12-05

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel MLPQ/QFN 1.7x2.0x0.55 12L P0.4 - - CHINA 0.4961 / 1k
ST1PS03AQTR Available at 3 distributors

Distributor availability ofST1PS03AQTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 290 1 Buy from Distributor
MOUSER WORLDWIDE 500 1 Buy from Distributor
Farnell Element14 EUROPE 297 1 Buy from Distributor

Distributor reported inventory date: 2021-12-05

Distributor Name

DIGIKEY

Stock

290

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

500

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

297

Min.Order

1

Distributor reported inventory date: 2021-12-05

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel MLPQ/QFN 1.7x2.0x0.55 12L P0.4 - - CHINA 0.4961 / 1k

ST1PS03A1QTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.4961 / 1k

Distributor availability ofST1PS03A1QTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 490 1 Buy from Distributor
MOUSER WORLDWIDE 295 1 Buy from Distributor
Farnell Element14 EUROPE 300 1 Buy from Distributor

Distributor reported inventory date: 2021-12-05

Distributor Name

DIGIKEY

Stock

490

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

295

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

300

Min.Order

1

Distributor reported inventory date: 2021-12-05

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

0.4961 / 1k

Country of Origin

CHINA

ST1PS03AQTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.4961 / 1k

Distributor availability ofST1PS03AQTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 290 1 Buy from Distributor
MOUSER WORLDWIDE 500 1 Buy from Distributor
Farnell Element14 EUROPE 297 1 Buy from Distributor

Distributor reported inventory date: 2021-12-05

Distributor Name

DIGIKEY

Stock

290

Min.Order

1

Region

WORLDWIDE Buy from Distributor

MOUSER

Stock

500

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Farnell Element14

Stock

297

Min.Order

1

Distributor reported inventory date: 2021-12-05

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

0.4961 / 1k

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