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  • The STEF01 is a universal integrated electronic fuse optimized for monitoring output current and the input voltage on DC power lines.

    When connected in series to the main power rail, it is able to detect and react to overcurrent and overvoltage conditions. When an overload condition occurs, the device limits the output current to a safe value defined by the user. If the anomalous overload condition persists, the device goes into an open state, disconnecting the load from the power supply.
    The device is fully programmable. UVLO, overvoltage clamp and start-up time can be set by means of external components.
    The adjustable turn-on time is useful to keep the in-rush current under control during startup and hot-swap operations. The device provides either thermal latch and auto-retry protection modes, which are selectable by means of a dedicated pin.
    The STEF01 provides a gate driver pin for an external power MOSFET to implement a reverse-current blocking circuit. The intervention of the thermal protection is signaled to the board monitoring circuits through a signal on the fault pin.

    Key Features

    • Operating input voltage range: 8 to 48 V
    • Absolute maximum input voltage: 55 V
    • Continuous current typ.: 4 A
    • N-channel on-resistance typ.: 30 mΩ
    • Enable/fault functions
    • Output clamp voltage: adjustable from 10 to 52 V
    • Programmable undervoltage lockout
    • Short-circuit current limit
    • Programmable overload current limit
    • Adjustable soft-start time
    • Latch or auto-retry thermal protection
    • Maximum allowable power protection
    • Power Good
    • Drives an optional external reverse current protection MOSFET
    • Operating junction temperature -40 °C to 125 °C
    • HTSSOP14 package

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Related Applications

Home, Building and City Automation

Power Supplies and Converters

Evaluation Tools

    • Part Number

      Evaluation board based on the STEF01 fully programmable universal electronic fuse

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS12147
      8 V to 48 V fully programmable universal electronic fuse
      6.0
      4.06 MB
      PDF
      DS12147

      8 V to 48 V fully programmable universal electronic fuse

Publications and Collaterals

    • Description Version Size Action
      Linear and Switching Voltage Regulators Selection Guide 3.0
      370.88 KB
      PDF

      Linear and Switching Voltage Regulators Selection Guide

    • Description Version Size Action
      electronic Fuse quick Reference Guide 1.1
      989.09 KB
      PDF

      electronic Fuse quick Reference Guide

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STEF01FTR
Active
HTSSOP14 Industrial Ecopack2

STEF01FTR

Package:

HTSSOP14

Material Declaration**:

PDF XML

Marketing Status

Active

Package

HTSSOP14

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
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
STEF01FTR Available at 7 distributors

Distributor availability ofSTEF01FTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 970 1 Order Now
RS COMPONENTS EUROPE 245 1 Order Now
AVNET AMERICA 5000 0 Order Now
FUTURE WORLDWIDE 2500 2500 Order Now
MOUSER WORLDWIDE 1826 1 Order Now
Farnell Element14 EUROPE 2663 1 Order Now
ANGLIA Live EUROPE 20 1 Order Now

Distributor reported inventory date: 2020-09-20

Distributor Name

DIGIKEY

Stock

970

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

245

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

5000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

2500

Min.Order

2500

Region

WORLDWIDE Order Now

MOUSER

Stock

1826

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2663

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

20

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-20

Sample & Buy Buy now
Active
EAR99 NEC Tape And Reel HTSSOP14 - - THAILAND 1.0 / 1k

STEF01FTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.0 / 1k

Distributor availability ofSTEF01FTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 970 1 Order Now
RS COMPONENTS EUROPE 245 1 Order Now
AVNET AMERICA 5000 0 Order Now
FUTURE WORLDWIDE 2500 2500 Order Now
MOUSER WORLDWIDE 1826 1 Order Now
Farnell Element14 EUROPE 2663 1 Order Now
ANGLIA Live EUROPE 20 1 Order Now

Distributor reported inventory date: 2020-09-20

Distributor Name

DIGIKEY

Stock

970

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

245

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

5000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

2500

Min.Order

2500

Region

WORLDWIDE Order Now

MOUSER

Stock

1826

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2663

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

20

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-20

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

HTSSOP14

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

1.0 / 1k

Country of Origin

THAILAND

(*) 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