STEF12:Electronic fuse for 12 V line

The STEF12 is an integrated electronic fuse optimized for monitoring output current and input voltage. Connected in series to a 12 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 STEF12 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 the 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 the 5 V power rails is also available with part number STEF05.

Key Features

  • Continuous current (typ): 3.6 A
  • N-channel on-resistance (typ): 53 mΩ
  • Enable/Fault functions
  • Output clamp voltage (typ):15 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
产品规格
DescriptionVersionSize
DS7315: Electronic fuse for 12 V line6.01 MB
应用手册
DescriptionVersionSize
AN4069: 5 V and 12 V power line protection based on STEF05 and STEF12 electronic fuses1.1807 KB
选型指南
DescriptionVersionSize
Linear and Switching Voltage Regulators Selection Guide383 KB
解决方案评估工具
型号制造商Description
STEVAL-IFP021V15 V and 12 V power line protection based on STEF05 and STEF12 electronic fuses
样片和购买
型号PackagePacking TypeUnit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
STEF12PURVDFPN 10 3x3x1.0Tape And Reel0.5961000NECEAR99CHINA
STEF12EPURVDFPN 10 3x3x1.0Tape And Reel0.5961000NECEAR99CHINA
质量和可靠性
型号PackageGradeRoHS Compliance GradeMaterial Declaration**
STEF12PURVDFPN 10 3x3x1.0IndustrialEcopack2md_wq-wspc-vdfpn-wspc-3x3x1.0-wspc-10-wspc-pitch-wspc-0.50_rqwq-wspc-uw71ad6-wspc-(stef12pur)-wspc-wcp-wspc-ver2_signed.pdf
md_wq-wspc-vdfpn-wspc-3x3x1.0-wspc-10-wspc-pitch-wspc-0.50_rqwq-wspc-uw71ad6-wspc-(stef12pur)-wspc-wcp-wspc-ver2.xml
STEF12EPURVDFPN 10 3x3x1.0IndustrialEcopack2md_wq-wspc-vdfpn-wspc-3x3x1.0-wspc-10-wspc-pitch-wspc-0.50_rqwquc22aa6-wspc-(stef12epur)_a_ver2_signed.pdf
md_wq-wspc-vdfpn-wspc-3x3x1.0-wspc-10-wspc-pitch-wspc-0.50_rqwquc22aa6-wspc-(stef12epur)_a_ver2.xml
Electronic fuse for 12 V line STEF12
5 V and 12 V power line protection based on STEF05 and STEF12 electronic fuses STEVAL-IFP021V1
Digital controller for wireless battery charger transmitters for wearable and smartwatch applications STWBC-WA
md_wq-wspc-vdfpn-wspc-3x3x1.0-wspc-10-wspc-pitch-wspc-0.50_rqwq-wspc-uw71ad6-wspc-(stef12pur)-wspc-wcp-wspc-ver2_signed.pdf STEF12
md_wq-wspc-vdfpn-wspc-3x3x1.0-wspc-10-wspc-pitch-wspc-0.50_rqwq-wspc-uw71ad6-wspc-(stef12pur)-wspc-wcp-wspc-ver2.xml STEF12
md_wq-wspc-vdfpn-wspc-3x3x1.0-wspc-10-wspc-pitch-wspc-0.50_rqwquc22aa6-wspc-(stef12epur)_a_ver2_signed.pdf STEF12
md_wq-wspc-vdfpn-wspc-3x3x1.0-wspc-10-wspc-pitch-wspc-0.50_rqwquc22aa6-wspc-(stef12epur)_a_ver2.xml STEF12