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  • The ST1S32 is an internally compensated 1.5 MHz fixed-frequency PWM synchronous step-down regulator. The ST1S32 operates from 2.8 V to 5.5 V input, while it regulates an output voltage as low as 0.8 V and up to VIN.

    The ST1S32 integrates a 60 mΩ high-side switch and a 45 mΩ synchronous rectifier, allowing very high efficiency with very low output voltages.
    The peak current mode control with internal compensation delivers a very compact solution with a minimum component count.
    The ST1S32 is available in 4 mm x 4 mm, 8-lead VFDFPN package.

    Key Features

    • 4 A DC output current
    • 2.8 V to 5.5 V input voltage
    • Output voltage adjustable from 0.8 V
    • 1.5 MHz switching frequency
    • Internal soft-start and enable
    • Integrated 60 mΩ and 45 mΩ Power MOSFETs
    • All ceramic capacitor
    • Power Good (POR)
    • Cycle-by-cycle current limiting
    • Current foldback short-circuit protection
    • VFDFPN 8 4x4x1.0 package

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Evaluation Tools

    • Part Number

      4 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S32 in DFN 4x4 package

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS9063
      4 A DC step-down switching regulator
      1.0
      803.68 KB
      PDF
      DS9063

      4 A DC step-down switching regulator

    • 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
      Electric vehicle (EV) ecosystem 1.1
      1.28 MB
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      Electric vehicle (EV) ecosystem

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
ST1S32PUR
Active
DFN8 4x4 Industrial Ecopack2

ST1S32PUR

Package:

DFN8 4x4

Material Declaration**:

Marketing Status

Active

Package

DFN8 4x4

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

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
Package
Packing Type
Marketing Status
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
ST1S32PUR Available at 5 distributors

Distributor availability ofST1S32PUR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5331 1 Order Now
RS COMPONENTS EUROPE 1730 1 Order Now
Newark Element14 AMERICA 100 0 Order Now
MOUSER WORLDWIDE 5061 1 Order Now
Farnell Element14 EUROPE 2422 1 Order Now

Distributor reported inventory date: 2020-07-02

Distributor Name

DIGIKEY

Stock

5331

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1730

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

100

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5061

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2422

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-02

Get sample DFN8 4x4 Tape And Reel
Active
EAR99 MALAYSIA 0.673 / 1k

ST1S32PUR

Package

DFN8 4x4

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

0.673 / 1k

Distributor availability ofST1S32PUR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5331 1 Order Now
RS COMPONENTS EUROPE 1730 1 Order Now
Newark Element14 AMERICA 100 0 Order Now
MOUSER WORLDWIDE 5061 1 Order Now
Farnell Element14 EUROPE 2422 1 Order Now

Distributor reported inventory date: 2020-07-02

Distributor Name

DIGIKEY

Stock

5331

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

1730

Min.Order

1

Region

EUROPE Order Now

Newark Element14

Stock

100

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

5061

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2422

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-07-02

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.673 / 1k

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) 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