ST1S10

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Monolithic synchronous step-down regulator

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  • The ST1S10 is a high efficiency step-down PWM current mode switching regulator capable of providing up to 3 A of output current. The device operates with an input supply range from 2.5 V to 18 V and provides an adjustable output voltage from 0.8 V (VFB) to 0.85 * VIN_SW[VOUT= VFB * (1 + R1/R2)]. It operates either at a 900 kHz fixed frequency or can be synchronized to an external clock (from 400 kHz to 1.2 MHz). The high switching frequency allows the use of tiny SMD external components, while the integrated synchronous rectifier eliminates the need for a Schottky diode. The ST1S10 provides excellent transient response, and is fully protected against thermal overheating, switching overcurrent and output short-circuit.

    The ST1S10 is the ideal choice for point of load regulators or LDO pre-regulation.

    Key Features

    • Step-down current mode PWM regulator
    • Output voltage adjustable from 0.8 V
    • Input voltage from 2.5 V up to 18 V
    • 2% DC output voltage tolerance
    • Synchronous rectification
    • Inhibit function
    • Synchronizable switching frequency from 400 kHz up to 1.2 MHz
    • Internal soft start
    • Dynamic short-circuit protection
    • Typical efficiency: 90%
    • 3 A output current capability
    • Standby supply current: max. 6 μA over temperature range
    • Operative junction temp.: from -40 °C to 125 °C

Circuit Diagram

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ST1S10PHR PowerSO-8 Tape And Reel
Active
EAR99 CHINA 0.693 / 1k Get sample Check Availability

Distributor availability ofST1S10PHR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5244 1 Order Now
COMPEL EUROPE 17989 1 Order Now
RS COMPONENTS EUROPE 3255 5 Order Now
AVNET AMERICA 4 0 Order Now
ARROW EUROPE 10000 0 Order Now
MOUSER WORLDWIDE 3048 1 Order Now
Farnell Element14 EUROPE 274 1 Order Now
ANGLIA Live EUROPE 5695 1 Order Now

Distributor reported inventory date: 2020-04-02

Distributor Name

DIGIKEY

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5244

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1

Region

WORLDWIDE Order Now

COMPEL

Stock

17989

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

3255

Min.Order

5

Region

EUROPE Order Now

AVNET

Stock

4

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

10000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

3048

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

274

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

5695

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-04-02

ST1S10PUR DFN8 4x4 Tape And Reel
Active
EAR99 MALAYSIA 0.693 / 1k Get sample Check Availability

Distributor availability ofST1S10PUR

Distributor Name
Region Stock Min. Order Third party link
COMPEL EUROPE 4710 1 Order Now
RS COMPONENTS EUROPE 1120 5 Order Now
FUTURE WORLDWIDE 32069 1 Order Now
ARROW EUROPE 13500 0 Order Now
MOUSER WORLDWIDE 3762 1 Order Now

Distributor reported inventory date: 2020-04-02

Distributor Name

COMPEL

Stock

4710

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

1120

Min.Order

5

Region

EUROPE Order Now

FUTURE

Stock

32069

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

13500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

3762

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-04-02

ST1S10PHR

Package

PowerSO-8

Packing Type

Tape And Reel

Approximate Price (US$)* / Qty

0.693 / 1k

Distributor availability ofST1S10PHR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5244 1 Order Now
COMPEL EUROPE 17989 1 Order Now
RS COMPONENTS EUROPE 3255 5 Order Now
AVNET AMERICA 4 0 Order Now
ARROW EUROPE 10000 0 Order Now
MOUSER WORLDWIDE 3048 1 Order Now
Farnell Element14 EUROPE 274 1 Order Now
ANGLIA Live EUROPE 5695 1 Order Now

Distributor reported inventory date: 2020-04-02

Distributor Name

DIGIKEY

Stock

5244

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

17989

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

3255

Min.Order

5

Region

EUROPE Order Now

AVNET

Stock

4

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

10000

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

3048

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

274

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

5695

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-04-02

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.693 / 1k

ECCN (US)

EAR99

Country of Origin

CHINA

ST1S10PUR

Package

DFN8 4x4

Packing Type

Tape And Reel

Approximate Price (US$)* / Qty

0.693 / 1k

Distributor availability ofST1S10PUR

Distributor Name
Region Stock Min. Order Third party link
COMPEL EUROPE 4710 1 Order Now
RS COMPONENTS EUROPE 1120 5 Order Now
FUTURE WORLDWIDE 32069 1 Order Now
ARROW EUROPE 13500 0 Order Now
MOUSER WORLDWIDE 3762 1 Order Now

Distributor reported inventory date: 2020-04-02

Distributor Name

COMPEL

Stock

4710

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

1120

Min.Order

5

Region

EUROPE Order Now

FUTURE

Stock

32069

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

13500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

3762

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-04-02

Marketing Status

Active

Budgetary Price (US$)* / Qty

0.693 / 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

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Technical Documentation

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      DS5438
      3 A, 900 kHz, monolithic synchronous step-down regulator IC
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      TN1224
      Mounting instructions for SMD (surface mounting device) packages
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      Mounting instructions for SMD (surface mounting device) packages

Publications and Collaterals

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Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
ST1S10PHR
Active
PowerSO-8 Industrial Ecopack2
ST1S10PUR
Active
DFN8 4x4 Industrial Ecopack2

ST1S10PHR

Package:

PowerSO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

ST1S10PUR

Package:

DFN8 4x4

Material Declaration**:

PDF XML

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

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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]

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A This option is required and must be a number.

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