eFuse ICs

Conventional fuses protect circuits and prevent equipment destruction by fusing the built-in alloy parts by Joule heat when a current exceeding the rated value flows. However, these fuses have disadvantages such as uncertainty of the breaking current, slow fusing time, and the need for replacement work due to destruction by a single overcurrent. Unlike conventional fuses, the eFuse IC (electronic fuse) has a high-speed current interruption function because the built-in MOSFETs are turned off when excessive current flows. In addition, it is not destroyed by a single overcurrent and can be used repeatedly. It is advantageous in that it can incorporate various protection functions such as overvoltage protection. This product is also effective in reducing maintenance costs and recovery time for repairs.


You can narrow down the search for applicable products by selecting specifications.

Operating input voltage VIN (Min) (V)
Operating input voltage VIN (Max) (V)
Operating Output Current IOUT (Max) (A)

You can narrow down your search for applicable products by package type or number of pins.


All package dimensions are guaranteed in millimeters as mentioned on datasheet. Package dimension in inches is round to 2 significant digits converted with 1mm=0.0393701inch.

About information presented in this cross reference

The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.
TOSHIBA is not responsible for any incorrect or incomplete information. Information is subject to change at any time without notice.

All major protection functions are realized in one package.
Toshiba eFuse ICs incorporate various high-performance, high-precision protective functions that are not feasible with conventional fuses.
All major protection functions are realized in one package


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Technical topics


Solid State Drive
Wireless Charger
Cordless Power Tool
Washing Machine
Robot Cleaner
Wireless Earbuds
Cordless Cleaner
Action Camera
Electric Shaver
Surveillance Camera
Tablet Device
Smart Speaker
Smart Watch

Reference Design

PCB photo example of Power multiplexer circuit
Power Multiplexer Circuit Using Common-Drain MOSFET
This power multiplexer circuit with 2 inputs and 1 output is realized on a small board. A new power multiplexer circuit usign common-drain MOSFET has been added to the already developed power multiplexer circuit reference design. These reference circuits allow switching between BBM and MBB modes by combining optimal devices such as MOSFET gate driver ICs and zener diodes from our diverse product lineup.
Power multiplexer circuit / 2 input and 1 output


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