Dear,
There is something confusion about using of TLC59401.Problems are as follows:
when i control the OUTx from High to low(led turns off to turns on), a pulse(showing in the picture) appears before the coming Low level. This pulse pulls the Low level down to 0V.During this period, the constant voltage source VLED is also pulled down. Another thing strange is when i reduce the Imax setting,the pulse disappears!!! i dont know why??
i doubt it is a overshoot?or design problems?and how to solve it?
Looking forward to your reply,and many thanks!!!
