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  • The STEF512GR is an integrated dual electronic fuse, designed to protect circuitry on its output from overcurrent and overvoltage events, in those applications requiring hot swap operation and in-rush current control.

    The device embeds two independent electronic fuses, one for the 5 V rails and one for the 12 V rails. Thanks to the very low ON-resistance of the integrated Power FETs, the voltage drop from the main supply to the load is very low during normal operations.
    The start-up time can be adjusted by the user for each e-fuse, via two small soft-start capacitors, connected to the relevant pins.
    In this manner, the inrush current at startup can be kept under control.
    The maximum load current is precisely limited, by utilizing a sense FET topology, to factory-defined values.
    The device also provides a precise overvoltage clamp for each channel, preventing the load from being damaged by power supply failures, and undervoltage lockout (UVLO), assuring that the input voltage is above the minimum operating threshold, before the power device is turned on.
    When an overload condition occurs, the STEF512GR limits the output current to the predefined safe value. If the anomalous overload condition persists, the device goes into thermal shutdown, the internal switch is opened and the load disconnected from the power supply.

    Key Features

    • 5 V and 12 V channels into one chip
    • 25 V absolute maximum input voltage
    • Precise output over voltage clamp
    • Fixed current limit: 3 A on 5 V, 4 A on 12 V
    • Latched-off thermal protection
    • Input undervoltage lockout
    • Adjustable output voltage slew-rate for each channel
    • Integrated 40 mΩ Power FETs
    • SAS disable pin
    • TSOT23-8L package

Recommended for you

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS13212
      Dual electronic fuse for 5 V and 12 V rails
      2.0
      1.92 MB
      PDF
      DS13212

      Dual electronic fuse for 5 V and 12 V rails

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**
STEF512GR
Active
TSOT 8L Industrial Ecopack2

STEF512GR

Package:

TSOT 8L

Material Declaration**:

Marketing Status

Active

Package

TSOT 8L

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
STEF512GR No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape And Reel TSOT 8L -40 125 MALAYSIA

STEF512GR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

TSOT 8L

Operating Temperature (°C)

(min)

-40

(max)

125

Budgetary Price (US$)* / Qty

Country of Origin

MALAYSIA

(*) 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