I'm using the eval board with a PWM signal 140Hz into the VT pin, but I find that the FB_OUT signal to the FET changes character around 70%, causing a change in the way brightness (a very dim region). Is this down to the COMP circuit needed tuning?
| SLA Status | Assignee | Support Status |
|---|---|---|
| SLA Closed. Missed after 1030 hours |
Awaiting Customer Response | |
ADP8140
Production
The ADP8140 provides high current control of up to four LED drivers. Each driver can sink up to 500 mA. The sink current is programmed for all four drivers...
Datasheet
ADP8140 on Analog.com
I'm using the eval board with a PWM signal 140Hz into the VT pin, but I find that the FB_OUT signal to the FET changes character around 70%, causing a change in the way brightness (a very dim region). Is this down to the COMP circuit needed tuning?
Hello, to help you better with your issue i need a bit more details.
What change are you experiencing exactly, could you please describe the problem in more detail?
Can you also please share the configuration of your jumpers?