STEF05

Active
Design Win

Electronic fuse for 5 V line

Download datasheet Order Direct
Overview
eDesignSuite
Sample & Buy
Solutions
Documentation
CAD Resources
Tools & Software
Quality & Reliability
Get Started
Partner products
Sales Briefcase

Product overview

Description

The STEF05 is an integrated electronic fuse optimized for monitoring output current and input voltage. Connected in series to a 5 V rail, it is capable of protecting the electronic circuitry on its output from overcurrent and overvoltage. The device has a controlled delay and turn-on time. When an overload condition occurs, the STEF05 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 power is re-applied the E-fuse initially limits the output current to a safe value, and then again goes into an open state. The device is equipped with a thermal protection circuit. The intervention of the thermal protection is signalled to the board monitoring circuits through a signal on the Fault pin. Unlike mechanical fuses, which must be physically replaced after a single event, the E-fuse does not degrade in its performance after short-circuit/thermal protection interventions and it is reset either by recycling the supply voltage or using the Enable pin. The companion chip for 12 V power rails is also available with part number STEF12.
  • All features

    • Continuous current (typ): 3.6 A
    • N-channel on-resistance (typ): 40 mΩ
    • Enable/Fault functions
    • Output clamp voltage (typ): 6.65 V
    • Undervoltage lockout
    • Short-circuit limit
    • Overload current limit
    • Controlled output voltage ramp
    • Thermal latch (typ): 165 °C
    • Uses tiny capacitors
    • Operating junction temp. - 40 °C to 125 °C
    • Available in DFN10 (3x3 mm) package

You might also like...

All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      AP350/SG5000 Automatic Programming System

      Active

      Automatic programmers for STM MCUs series & PMUs

      Hardware Development Tools from Partners System General
      AP350/SG5000 Automatic Programming System

      Description:

      Automatic programmers for STM MCUs series & PMUs

      T9800/SG8000 Device Programmer

      Active

      Universal programmers for STM MCUs series & PMUs

      Hardware Development Tools from Partners System General
      T9800/SG8000 Device Programmer

      Description:

      Universal programmers for STM MCUs series & PMUs
    • Part number
      Status
      Description
      Type
      Supplier

      STEVAL-IFP021V1

      Active

      5 V and 12 V power line protection based on STEF05 and STEF12 electronic fuses

      Process Control and Automation Solution Eval Boards --
      STEVAL-IFP021V1

      Description:

      5 V and 12 V power line protection based on STEF05 and STEF12 electronic fuses

EDA Symbols, Footprints and 3D Models

STMicroelectronics - STEF05

Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.

Symbols

Symbols

Footprints

Footprints

3D model

3D models

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STEF05PUR
Active
DFN10 3X3 Industrial Ecopack2

STEF05PUR

Package:

DFN10 3X3

Material Declaration**:

PDF XML

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.

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
STEF05PUR Available at 2 distributors

Distributor availability ofSTEF05PUR

Distributor Name
Region Stock Min. Order Third party link
YOSUN ASIA/PACIFIC 150 1 Buy from Distributor
MOUSER WORLDWIDE 14 1 Buy from Distributor

Distributor reported inventory date: 2022-05-03

Distributor Name

YOSUN

Stock

150

Min.Order

1

Region

ASIA/PACIFIC Buy from Distributor

MOUSER

Stock

14

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-05-03

Active
EAR99 NEC Tape And Reel DFN10 3X3 -40 125 CHINA

STEF05PUR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

Distributor availability ofSTEF05PUR

Distributor Name
Region Stock Min. Order Third party link
YOSUN ASIA/PACIFIC 150 1 Buy from Distributor
MOUSER WORLDWIDE 14 1 Buy from Distributor

Distributor reported inventory date: 2022-05-03

Distributor Name

YOSUN

Stock

150

Min.Order

1

Region

ASIA/PACIFIC Buy from Distributor

MOUSER

Stock

14

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-05-03

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

DFN10 3X3

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

Country of Origin

CHINA

(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors