LM3464: spec question

Hello,

Maximum LED current per sting is limited by the external parts chosen, the current sense resistors and the MOSFETs used.  SOA and power dissipation for the MOSFETs needs to be checked over the operating range you plan on using it including any fault conditions or variances in LED stack voltages.

The EVM has a graph showing a typical four channel version current regulation accuracy channel to channel over varying operating temperature.  I'm looking to see if I can find worst case input offset voltage to the current regulator as well.  The current sense resistor plays a part in the accuracy as well as layout (voltage drops on traces).

Thanks,

Thanks, Irwin.

That mean LM3464 could support LED current per string greater than 1A? Why it's shown 1A max. in the datasheet? Is it just an example? 

Hello,

Since the MOSFETs and current sense resistor are external it can be used beyond one amp, again, a lot has to be taken into consideration for the MOSFET, SOA, power dissipation for example.  Figure 19 is the only reference to a range of current but it's just for showing resistor values for a range.

Thanks,