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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.
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Short circuit protection function
The short circuit protection function prevents excessive current from flowing by stopping operation when the power supply line or load is short-circuited due to some kind of abnormality. In TCKE800 / 805 / 812 series, if the output current is 1.6 times the current limit (ILIM) for a very short period of time, the output is judged to be short-circuited and this function operates.
Short circuit protection waveform
Toshiba eFuse IC uses a short circuit protection circuit (Fast trip function) that operates at high speed.
The above figure shows the operating waveform (*) of the simulated Fast trip function.
The simulation results show that the current is suppressed to near zero 150 ns (typ.) after the short circuit occurs.
* In the actual circuit, the operating waveform may differ due to the influence of parasitic resistance and capacitance such as wiring.
Basics of eFuse ICs
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