LM3644: Ripple Control

Mark Philip Felipe

Part Number: LM3644

Hi Team, we would like to seek your inputs on this.We need to control the burrs(ripple) in 100mv (3.3V).

Is there any suggestion?

Thank you very much.

Regards,

Mark

0 Sean Zhou over 3 years ago

Hi Mark,

What's your meaning for the "burrs ripple control"? Since LM3644 controls the LED output current and it doesn't control the output voltage.

Sean

0 Mark Philip Felipe over 3 years ago in reply to Sean Zhou

Hi Sean, Thank you for your support.

The ripple we are pertaining is seen on the oscilloscope graph. About 200mV,

Thank you.

- Mark

0 Sean Zhou over 3 years ago in reply to Mark Philip Felipe

Hi Mark,

Ok, since we are LED driver which delivers constant current, as long as the output current is stable that should be fine.

Sean

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