Hi,
I'm working on a SMALL buck boost driver for high powered leds using the TPS63000 part found here:
https://focus.ti.com/docs/prod/folders/print/tps63000.html
I want to convert this to a constant current regulator and I found this:
https://www.electro-tech-online.com/attachments/cc_converter-gif.9482/
Basically it uses a flating ground, sense resistor and a single op-amp to convert to a CC regulator.
My question is can I take any single op-amp and drive it in single supply mode without the -'ve and +'ve supply for this purpose?
My input voltage would be 2.5V - 4.2V so i'm looking for an op-amp that will work and is SMALL like SOT23-5 or smaller.
If anyone has any other comments about what I'm trying to achieve, please tell me.
Basically, a small small CC converter for high powered leds ~ 1A. Cheers!
I'm working on a SMALL buck boost driver for high powered leds using the TPS63000 part found here:
https://focus.ti.com/docs/prod/folders/print/tps63000.html
I want to convert this to a constant current regulator and I found this:
https://www.electro-tech-online.com/attachments/cc_converter-gif.9482/
Basically it uses a flating ground, sense resistor and a single op-amp to convert to a CC regulator.
My question is can I take any single op-amp and drive it in single supply mode without the -'ve and +'ve supply for this purpose?
My input voltage would be 2.5V - 4.2V so i'm looking for an op-amp that will work and is SMALL like SOT23-5 or smaller.
If anyone has any other comments about what I'm trying to achieve, please tell me.
Basically, a small small CC converter for high powered leds ~ 1A. Cheers!