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LED Driver ICs Forum Discussions

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ERRN status remains low when the fault is present on the output even during the IN_SET de-activation time (IN_SET open via uC).
This happens because ERRN status depends only on the OUTx and EN/DEN voltages. It doesn't depend on any change of resistive load at IN_SET.
When a fault (OL/SC) occurs the IN_SET regulation turns off: VIN_SET goes to GND after tfault and D charge phase.
Open load:

Short circuit:

For more information on the LITIX™ Basic+ diagnostics check the product datasheet and the application note "Litix™ Basic+ LED driver family: Diagnosis and fault management"
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