eFuse ( electronic fuse ) for 5 V line

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  • The STEF05L is an integrated electronic fuse optimized for monitoring output current and the input voltage. Connected in series to the 5 V rail, it is able to protect the electronic circuitry on its output from overcurrent and overvoltage. The STEF05L has controlled delay and turn-on time. When an overload condition occurs, the device limits the output current to a predefined safe value. If the anomalous overload condition persists, it goes into an open state, disconnecting the load from the power supply. If a continuous short-circuit is present on the board, when the power is re-applied the E-fuse initially limits the output current to a safe value and then goes again into the open state. The voltage clamping circuit prevents the output voltage from exceeding a fixed value, if the input voltage goes beyond this threshold. The device is equipped with a thermal protection circuit. Intervention of thermal protection is signaled to the board-monitoring circuits through an appropriate signal on the Fault pin. Unlike mechanical fuses, which must be physically replaced after a single event, the Efuse does not degrade in its performances following short-circuit/thermal protection intervention and is reset either by re-cycling the supply voltage or using the appropriate Enable pin. The STEF05L is also available in an autoretry version; in case of thermal fault it automatically attempts to re-apply power to the load when the die temperature returns to a safe value.

    Key Features

    • Continuous current typ.: 3.6 A (DFN), 2.5 A (Flip Chip)
    • N-channel on resistance (typ.): 40 mΩ (DFN), 25 mΩ (Flip Chip)
    • Enable/Fault functions
    • Output clamp voltage (typ.): 6.1 V
    • Undervoltage lockout
    • Short-circuit limit
    • Overload current limit
    • Controlled output voltage ramp
    • Thermal latch (typ.): 160 °C
    • Uses tiny capacitors
    • Latching and auto-retry versions
    • Operative junction temp. - 40 °C to 125 °C
    • Available in DFN10 (3 x 3 mm) and Flip Chip 9 bumps

Sample & Buy

Part Number
Package
Packing Type
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Order from Distributors
Order from ST
STEF05LAPUR DFN10 3X3 Tape And Reel
Active
0.596 10000 EAR99 CHINA No availability of distributors reported, please contact our sales office
STEF05LAJR Flip-Chip 9 Tape And Reel
Active
0.596 10000 EAR99 CHINA No availability of distributors reported, please contact our sales office
STEF05LJR Flip-Chip 9 Tape And Reel
Active
0.596 10000 EAR99 CHINA No availability of distributors reported, please contact our sales office Buy now
STEF05LPUR DFN10 3X3 Tape And Reel
Active
0.596 10000 EAR99 CHINA Check Availability

Distributor availability ofSTEF05LPUR

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 74 1 Order Now

Distributor reported inventory date: 2019-09-18

Distributor Name

MOUSER

Stock

74

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-09-18

Get sample

STEF05LAPUR

Package

DFN10 3X3

Packing Type

Tape And Reel

Unit Price (US$)

0.596*

Marketing Status

Active

Unit Price (US$)

0.596

Quantity

10000

ECCN (US)

EAR99

Country of Origin

CHINA

STEF05LAJR

Package

Flip-Chip 9

Packing Type

Tape And Reel

Unit Price (US$)

0.596*

Marketing Status

Active

Unit Price (US$)

0.596

Quantity

10000

ECCN (US)

EAR99

Country of Origin

CHINA

STEF05LJR

Package

Flip-Chip 9

Packing Type

Tape And Reel

Unit Price (US$)

0.596*

Marketing Status

Active

Unit Price (US$)

0.596

Quantity

10000

ECCN (US)

EAR99

Country of Origin

CHINA

STEF05LPUR

Package

DFN10 3X3

Packing Type

Tape And Reel

Unit Price (US$)

0.596*

Distributor availability ofSTEF05LPUR

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 74 1 Order Now

Distributor reported inventory date: 2019-09-18

Distributor Name

MOUSER

Stock

74

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-09-18

Marketing Status

Active

Unit Price (US$)

0.596

Quantity

10000

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

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00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS11527
      Electronic fuse for 5 V line
      1.0
      1.49 MB
      PDF
      DS11527

      Electronic fuse for 5 V line

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 1.0
      2.67 MB
      PDF

      electronic Fuse quick Reference Guide

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STEF05LAJR
Active
Flip-Chip 9 Industrial Ecopack2
STEF05LAPUR
Active
DFN10 3X3 Industrial Ecopack2
STEF05LJR
Active
Flip-Chip 9 Industrial Ecopack2
STEF05LPUR
Active
DFN10 3X3 Industrial Ecopack2

STEF05LAJR

Package:

Flip-Chip 9

Material Declaration**:

Marketing Status

Active

Package

Flip-Chip 9

Grade

Industrial

RoHS Compliance Grade

Ecopack2

STEF05LAPUR

Package:

DFN10 3X3

Material Declaration**:

Marketing Status

Active

Package

DFN10 3X3

Grade

Industrial

RoHS Compliance Grade

Ecopack2

STEF05LJR

Package:

Flip-Chip 9

Material Declaration**:

Marketing Status

Active

Package

Flip-Chip 9

Grade

Industrial

RoHS Compliance Grade

Ecopack2

STEF05LPUR

Package:

DFN10 3X3

Material Declaration**:

Marketing Status

Active

Package

DFN10 3X3

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.