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LP8866-Q1: Control Current on each channel separately over i2c interface

Part Number: LP8866-Q1
Other Parts Discussed in Thread: LP8866EVM, LP8863-Q1, LP5569,


I'm evaluating with LP8866EVM for a single high current LED application that requires precise brightness control that does not rely on PWM dimming. My intent was to combine 5 channels on the LP8866 to achieve the 1000mA current that I require, and use the 12bit current control registers to change the total effective current. In evaluating the sample, it appears that the programming interface only allows a global control over channel current, meaning that even if I combine all channels together, effective resolution is still only 12bits. Am I missing something here? If not, can anyone recommend a different part number that can provide high resolution current control for up to 1000mA @ <3V (single LED).