STEF05L

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Design Win

Electronic fuse for 5 V line

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Product overview

Description

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 eFuse 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.

  • All 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

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STMicroelectronics - STEF05L

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STEF05LAJR
NRND
CSP P 0.4 mm Industrial Ecopack2
STEF05LAPUR
Active
DFN10 3X3 Industrial Ecopack2
STEF05LJR
NRND
CSP P 0.4 mm Industrial Ecopack2
STEF05LPUR
Active
DFN10 3X3 Industrial Ecopack2

STEF05LAJR

Package:

CSP P 0.4 mm

Material Declaration**:

PDF XML

Marketing Status

NRND

Package

CSP P 0.4 mm

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:

CSP P 0.4 mm

Material Declaration**:

PDF XML

Marketing Status

NRND

Package

CSP P 0.4 mm

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.

Sample & Buy

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Part Number
Marketing Status
Budgetary Price (US$)*/Qty
Order from ST
Order from distributors
Package
Packing Type
RoHS
Country of Origin
ECCN (US)
ECCN (EU)
Temperature (°C)
Operating Temperature (°C) (min)
min
max
STEF05LAPUR
Available at distributors

Distributor availability of STEF05LAPUR

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
DFN10 3X3 Tape and Reel CHINA EAR99 NEC - -

-

STEF05LAJR
Available at distributors

Distributor availability of STEF05LAJR

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
CSP P 0.4 mm Tape and Reel CHINA EAR99 NEC - -

-

STEF05LJR
Available at distributors

Distributor availability of STEF05LJR

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
CSP P 0.4 mm Tape and Reel ITALY EAR99 NEC - -

-

STEF05LPUR
Available at distributors

Distributor availability of STEF05LPUR

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office
DFN10 3X3 Tape and Reel CHINA EAR99 NEC - -

-

STEF05LAPUR Active

Budgetary Price (US$)*/Qty:
-
Package:
DFN10 3X3
Packing Type:
Tape and Reel
RoHS:
-
Country of Origin:
CHINA
ECCN (US):
EAR99
ECCN (EU):
NEC

Part Number:

STEF05LAPUR

Operating Temperature (°C)

Min:

-

Max:

-

STEF05LAJR NRND

Budgetary Price (US$)*/Qty:
-
Package:
CSP P 0.4 mm
Packing Type:
Tape and Reel
RoHS:
-
Country of Origin:
CHINA
ECCN (US):
EAR99
ECCN (EU):
NEC

Part Number:

STEF05LAJR

Operating Temperature (°C)

Min:

-

Max:

-

STEF05LJR NRND

Budgetary Price (US$)*/Qty:
-
Package:
CSP P 0.4 mm
Packing Type:
Tape and Reel
RoHS:
-
Country of Origin:
ITALY
ECCN (US):
EAR99
ECCN (EU):
NEC

Part Number:

STEF05LJR

Operating Temperature (°C)

Min:

-

Max:

-

STEF05LPUR Active

Budgetary Price (US$)*/Qty:
-
Package:
DFN10 3X3
Packing Type:
Tape and Reel
RoHS:
-
Country of Origin:
CHINA
ECCN (US):
EAR99
ECCN (EU):
NEC

Part Number:

STEF05LPUR

Operating Temperature (°C)

Min:

-

Max:

-

Distributor Name

Distributor reported inventory date:

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(*) 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