eFuse ( electronic fuse ) for 3.3V and 5V lines

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  • The STEF4S is an integrated electronic fuse optimized for monitoring the output current and the input voltage. It can be connected in series to 3.3 V or 5 V rails, protecting the electronic circuitry on its output from overcurrent and overvoltage. The operating mode (5 V or 3.3 V) can be selected by a dedicated pin. The STEF4S has a controlled turn-on time, adjustable by an external capacitor. 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, the E-fuse limits the output current to a safe value.

    In case of overvoltage on the input, the device clamps the output voltage to a predefined value and protects the load.
    If the anomalous fault condition persists, the internal thermal protection circuit shuts down the device and then automatically attempts to re-supply the load until the fault condition is removed.
    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.

    Key Features

    • Power MOSFET on-resistance (typ.): 40 mΩ
    • Enable function
    • Output clamp voltage (typ.): 5.7 V in 5 V mode, and 3.8 V in 3.3 V mode
    • Undervoltage lockout
    • Short-circuit limit
    • Overload foldback current limit
    • Controlled soft-start
    • Thermal auto-retry
    • Internal sensing FET
    • Operative temp. range: - 40 °C to 85 °C
    • Available in DFN 3x3 10L package
    • Hard disk drives
    • Solid state drives (SSD)
    • Hard disk and SSD arrays
    • Set-top boxes
    • DVD and blu-ray disc drivers

样片和购买

产品型号
封装
包装类型
供货状态
预算价格(US$)
数量
ECCN (US)
Country of Origin
从分销商订购
从ST订购
STEF4SPUR DFN10 3X3 Tape And Reel
批量生产
0.954 10000 EAR99 CHINA 查看供货情况

Distributor availability ofSTEF4SPUR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 2352 1 Order Now
MOUSER WORLDWIDE 1589 1 Order Now
Farnell Element14 EUROPE 1483 1 Order Now

代理商库存报告日期: 2019-11-18

代理商名称

DIGIKEY

库存

2352

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

1589

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

1483

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-11-18

获取样片

STEF4SPUR

封装

DFN10 3X3

包装类型

Tape And Reel

单价(US$)

0.954*

Distributor availability ofSTEF4SPUR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 2352 1 Order Now
MOUSER WORLDWIDE 1589 1 Order Now
Farnell Element14 EUROPE 1483 1 Order Now

代理商库存报告日期: 2019-11-18

代理商名称

DIGIKEY

库存

2352

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

1589

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

1483

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-11-18

供货状态

批量生产

单价(US$)

0.954

数量

10000

ECCN (US)

EAR99

Country of Origin

CHINA

(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商

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产品型号 供货状态 封装 等级规格 符合RoHS级别 Material Declaration**
STEF4SPUR
批量生产
DFN10 3X3 工业 Ecopack2

STEF4SPUR

Package:

DFN10 3X3

Material Declaration**:

PDF XML

Marketing Status

批量生产

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.