Can STEF01 handle negative transients (350 ms) of -40 Volt?

PradipRaj · ‎2025-09-16

we want to know that. Can this IC E-Fuse capable to handle negative transients (350 ms) of -40 Volt.

Please Reply ASAP.

MPN: STEF01

TDK · ‎2025-09-16

On the output pin? The output pin is limited to -0.3 V. -40 V is far outside of these bounds. Operation outside of the absolute maximum ratings is not guaranteed.

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Andrew Neil · ‎2025-09-16

@TDK wrote:
Operation outside of the absolute maximum ratings is not guaranteed.

Indeed.

@PradipRaj Worse than that - operation beyond the Absolute Maxima may cause damage:

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

TDK · ‎2025-09-16

And in this case, will almost certainly cause damage.

The -0.3 V limit suggests protection diodes. When you try to pull a net to - 40 V, those diodes will activate and try to bring VSS to - 40 V. That in turn will almost assuredly bring other rails down.

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