Part Number: TLC59116
Hi
Please help me use the current regulation, it does not seem to be active.
From the datasheet it appears to me that using an external resistor on IREF (we use 931 ohms) should result in appr. 20mA LED current with the default register settings. However, I can't get the device to regulate the current at all.
I want it to cap the output current at 20 mA, but I can set the dimming PWM registers (and the GRPPWM) to values which lead to higher currents - mainly limited by my external supply capability.
When writing to the IREF register, the device seems to ignore it completely, as if the current regulation is not active.
I understand I can not set the LED to "fully on" in the LED Output State registers, so that's not the issue.
I'm using '11' for the LED Output State X which should be the correct state for using dimming/blinking functionality.
How do I set up the part to enable the current regulation?
// Daniel