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Application Circuits of eFuse IC TCKE805 Series

Power line protection circuit with TCKE805 series. It achieves rapid shutdown at short circuit, other protection functions, and anti back current circuit with an external MOSFET.

Circuit of application circuits of eFuse IC TCKE805 series.
Waveforms of application circuits of eFuse IC TCKE805 series.


  • Power line protection circuit with the eFuse IC, TCKE805
  • The only one IC achieves rapid shutdown at short circuit and other protection functions.
  • Reverse current blocking circuit with an external MOSFET is available.


  • High input voltage: VIN (Max) = 18 V
  • High output current: IOUT(DC) = 5.0 A
  • Low ON resistance : RON = 28 mΩ(Typ)
  • Adjustable over current protection : 5.0 A(Max)
  • Fixed over voltage clamp
  • Programable slew rate control by external capacitance for Inrush current reduction
  • Programable under voltage lockout by external resistor
  • Reverse current blocking support by built in MOSFET Driver
  • Thermal shutdown
  • Auto-discharge
  • Small packgae : WSON10B (3.0 mm x 3.0 mm, t: 0.7 mm (Typ))

Reference design files

Design, Document

“Design・Document” contains the documents listed below.

Name Date

Design, File

“Design・File” contains the contents listed below.

*1: Actual PCB was designed on CR5000BD.The other files were made from CR5000BD file.

*2: The data was generated on CR5000BD.

Toshiba items

Part Number Device Category Portion Usage Description
TCKE805Nx* eFuse IC


VIN(Max) = 18 V/IOUT(DC) = 5 A/RON = 28


*: New product


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