ST1S14

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Up to 3 A step down switching regulator

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  • The ST1S14 is a step-down monolithic power switching regulator able to deliver up to 3 A DC current to the load depending on the application conditions. The high current level is also achieved thanks to a HSOP8 package with exposed frame, that allows to reduce the Rth(JA)down to approximately 40 °C/W. The output voltage can be set from 1.22 V. The device uses an internal N-channel DMOS transistor (with a typical RDS(on)of 200 mΩ) as the switching element to minimize the size of the external components. The internal oscillator fixes the switching frequency at 850 kHz. Power good open collector output validates the regulated output voltage as soon as it reaches the regulation. Pulse-by-pulse current limit offers an effective constant current short-circuit protection. Current foldback decreases overstress in a persistent short-circuit condition.

    Key Features

    • 3 A DC output current
    • Operating input voltage from 5.5 V to 48 V
    • 850 kHz internally fixed switching frequency
    • Internal soft-start
    • Power good open collector output
    • Current mode architecture
    • Embedded compensation network
    • Zero load current operation
    • Internal current limiting
    • Inhibit for zero current consumption
    • 2 mA maximum quiescent current over temperature range
    • 250 mΩ typ. RDS(on)
    • Thermal shutdown

Circuit Diagram

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Part Number
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Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
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ST1S14PHR PowerSO-8 Tape And Reel
Active
0.761 1000 EAR99 PHILIPPINES Check Availability

Distributor availability ofST1S14PHR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 14857 1 Order Now
COMPEL EUROPE 78949 1 Order Now
RS COMPONENTS EUROPE 7100 5 Order Now
FUTURE WORLDWIDE 2494 1 Order Now
ARROW EUROPE 27600 0 Order Now
Newark Element14 AMERICA 100 0 Order Now
MOUSER WORLDWIDE 18170 1 Order Now
Farnell Element14 EUROPE 4218 1 Order Now

Distributor reported inventory date: 2020-02-17

Distributor Name

DIGIKEY

Stock

14857

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

78949

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

7100

Min.Order

5

Region

EUROPE Order Now

FUTURE

Stock

2494

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

27600

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

100

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

18170

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4218

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-02-17

Get sample

ST1S14PHR

Package

PowerSO-8

Packing Type

Tape And Reel

Unit Price (US$)

0.761*

Distributor availability ofST1S14PHR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 14857 1 Order Now
COMPEL EUROPE 78949 1 Order Now
RS COMPONENTS EUROPE 7100 5 Order Now
FUTURE WORLDWIDE 2494 1 Order Now
ARROW EUROPE 27600 0 Order Now
Newark Element14 AMERICA 100 0 Order Now
MOUSER WORLDWIDE 18170 1 Order Now
Farnell Element14 EUROPE 4218 1 Order Now

Distributor reported inventory date: 2020-02-17

Distributor Name

DIGIKEY

Stock

14857

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

78949

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

7100

Min.Order

5

Region

EUROPE Order Now

FUTURE

Stock

2494

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

27600

Min.Order

0

Region

EUROPE Order Now

Newark Element14

Stock

100

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

18170

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4218

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-02-17

Marketing Status

Active

Unit Price (US$)

0.761

Quantity

1000

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

(*) 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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Evaluation Tools

    • Part Number

      Up to 3 A step-down switching regulator based on the ST1S14

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS6966
      Up to 3 A step-down switching regulator
      2.0
      2.42 MB
      PDF
      DS6966

      Up to 3 A 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

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      557.92 KB
      PDF

      DC-DC converters

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      1.28 MB
      PDF

      Electric vehicle (EV) ecosystem

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
ST1S14PHR
Active
PowerSO-8 Industrial Ecopack2

ST1S14PHR

Package:

PowerSO-8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSO-8

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.

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