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LED Driver ICs Forum Discussions

vasiliki
Employee
25 sign-ins 5 questions asked First question asked
Employee
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:
5381.attach

Short circuit:
5382.attach

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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