The datasheet says that, "The VDDIO/EN pin provides the supply voltage for digital IOs (PWM and SYNC inputs)and at the same time enables the device." I'm not quite sure what that means. Does it mean that there are an internal pull ups for the digital inputs, or do pullups have to be provided externally? If no internal pullups, does the LDO output appear on the LDO pin? If so, I'd like to steal a few microamps to create a digital supply for the pullups. Does the PWM pin need a pullup for maximum brightness, or can it be left unconnected?
Thanks
