I recently purchased a few of these from a local distributor for a project and I’m running them with 11.7V to 13.3V input and wanting to regulate that to 12.2V output.
Both the load and input voltage can vary over time, the load is a halogen lamp which will vary slightly with temperature, and the source is a Li 12V battery that is somewhere between 11.7 to 13.3V, typically.
The output voltage to power the lamp must be stable 12.2V to provide a stable illumination for my application regardless of lamp temperature or battery depletion.
I connected up the 12.2V battery and the load and the output showed 8.5V. Occasionally it will show 9.1V?
Turning the adjustment screw made little difference to the output, only +/- 200mV
Are there any ideas as to why this would be?
Thanks for your help.