Hello,
We are very interested in the ZXLD1370 LED Driver IC, -in relation to work I am doing on LED beacons.
We like this product because it appears to offer accurate current regulation in spite of its relatively easier hysteretic control nature.
On page 16 of the ZXLD1370 datasheet, Equation 4 gives an mathematical expression for the LED current.
For this expression to be correct, (1-D) would have to equal GI_ADJ.
As you know, GI_ADJ is a constant set by a resistive divider, and (1-D) is variable, since D varies as either the input voltage or output voltage changes.
Therefore, how can equation 4 possibly be correct? As such, I cannot see how the LED current could be well regulated over load and input voltage changes. –Please could you offer explanation?
Please could you assure us that the LED current regulation will be good over possible input voltage changes from 11V to 30V, and possible output voltages anywhere between 23V and 33V? Our LED load is 9 LEDs with 1.5A in them, and the flash duty is 0.4, with flash frequency of 2Hz.
**broken link removed**
We are very interested in the ZXLD1370 LED Driver IC, -in relation to work I am doing on LED beacons.
We like this product because it appears to offer accurate current regulation in spite of its relatively easier hysteretic control nature.
On page 16 of the ZXLD1370 datasheet, Equation 4 gives an mathematical expression for the LED current.
For this expression to be correct, (1-D) would have to equal GI_ADJ.
As you know, GI_ADJ is a constant set by a resistive divider, and (1-D) is variable, since D varies as either the input voltage or output voltage changes.
Therefore, how can equation 4 possibly be correct? As such, I cannot see how the LED current could be well regulated over load and input voltage changes. –Please could you offer explanation?
Please could you assure us that the LED current regulation will be good over possible input voltage changes from 11V to 30V, and possible output voltages anywhere between 23V and 33V? Our LED load is 9 LEDs with 1.5A in them, and the flash duty is 0.4, with flash frequency of 2Hz.
**broken link removed**