ST1PS02

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400mA Nano-Quiescent Synchronous step-down converter with digital voltage selection, Power Good and AUX switch

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  • 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.

    Key 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

Recommended for you

Evaluation Tools

    • Part Number

      Evaluation board based on ST1PS02BQTR 400 mA nano-quiescent synchronous step-down converter with AUX switch

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS13206
      400 mA nano-quiescent synchronous step-down converter with digital voltage selection, Power Good and AUX switch
      3.0
      1.65 MB
      PDF
      DS13206

      400 mA nano-quiescent synchronous step-down converter with digital voltage selection, Power Good and AUX switch

    • Description Version Size Action
      TN1224
      Mounting instructions for SMD (surface mounting device) packages
      2.2
      1.06 MB
      PDF
      TN1224

      Mounting instructions for SMD (surface mounting device) packages

Publications and Collaterals

    • Description Version Size Action
      DC-DC converters 400 mA, nano-quiescent current synchronous step-down converters 1.0
      126.77 KB
      PDF

      DC-DC converters 400 mA, nano-quiescent current synchronous step-down converters

    • Description Version Size Action
      Electric vehicle (EV) ecosystem 1.1
      1.28 MB
      PDF

      Electric vehicle (EV) ecosystem

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
ST1PS02AQTR
Preview
MLPQ/QFN 1.7x2.0x0.55 12L P0.4 Industrial Ecopack2
ST1PS02BQTR
Preview
MLPQ/QFN 1.7x2.0x0.55 12L P0.4 Industrial Ecopack2
ST1PS02CQTR
Preview
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
Preview
MLPQ/QFN 1.7x2.0x0.55 12L P0.4 Industrial Ecopack2

ST1PS02AQTR

Package:

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

Material Declaration**:

Marketing Status

Preview

Package

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

Grade

Industrial

RoHS Compliance Grade

Ecopack2

ST1PS02BQTR

Package:

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

Material Declaration**:

Marketing Status

Preview

Package

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

Grade

Industrial

RoHS Compliance Grade

Ecopack2

ST1PS02CQTR

Package:

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

Material Declaration**:

Marketing Status

Preview

Package

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

Grade

Industrial

RoHS Compliance Grade

Ecopack2

ST1PS02D1QTR

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

ST1PS02DQTR

Package:

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

Material Declaration**:

Marketing Status

Preview

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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Package
Packing Type
Marketing Status
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
ST1PS02DQTR No availability of distributors reported, please contact our sales office MLPQ/QFN 1.7x2.0x0.55 12L P0.4 Tape And Reel
Preview
EAR99 CHINA
ST1PS02D1QTR Available at 3 distributors

Distributor availability ofST1PS02D1QTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 972 1 Order Now
MOUSER WORLDWIDE 952 1 Order Now
RUTRONIK EUROPE 10 3000 Order Now

Distributor reported inventory date: 2020-07-08

Distributor Name

DIGIKEY

Stock

972

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

952

Min.Order

1

Region

WORLDWIDE Order Now

RUTRONIK

Stock

10

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-08

Get sample MLPQ/QFN 1.7x2.0x0.55 12L P0.4 Tape And Reel
Active
EAR99 CHINA 0.41 / 1k
ST1PS02AQTR No availability of distributors reported, please contact our sales office MLPQ/QFN 1.7x2.0x0.55 12L P0.4 Tape And Reel
Preview
EAR99 CHINA
ST1PS02BQTR No availability of distributors reported, please contact our sales office MLPQ/QFN 1.7x2.0x0.55 12L P0.4 Tape And Reel
Preview
EAR99 CHINA
ST1PS02CQTR No availability of distributors reported, please contact our sales office MLPQ/QFN 1.7x2.0x0.55 12L P0.4 Tape And Reel
Preview
EAR99 CHINA

ST1PS02DQTR

Package

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

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

Marketing Status

Preview

Budgetary Price (US$)* / Qty

ECCN (US)

EAR99

Country of Origin

CHINA

ST1PS02D1QTR

Package

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

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.41 / 1k

Distributor availability ofST1PS02D1QTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 972 1 Order Now
MOUSER WORLDWIDE 952 1 Order Now
RUTRONIK EUROPE 10 3000 Order Now

Distributor reported inventory date: 2020-07-08

Distributor Name

DIGIKEY

Stock

972

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

952

Min.Order

1

Region

WORLDWIDE Order Now

RUTRONIK

Stock

10

Min.Order

3000

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-08

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.41 / 1k

ECCN (US)

EAR99

Country of Origin

CHINA

ST1PS02AQTR

Package

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

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

Marketing Status

Preview

Budgetary Price (US$)* / Qty

ECCN (US)

EAR99

Country of Origin

CHINA

ST1PS02BQTR

Package

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

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

Marketing Status

Preview

Budgetary Price (US$)* / Qty

ECCN (US)

EAR99

Country of Origin

CHINA

ST1PS02CQTR

Package

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

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

Marketing Status

Preview

Budgetary Price (US$)* / Qty

ECCN (US)

EAR99

Country of Origin

CHINA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors