LP8868Y-Q1: Can it be used for Vin= 19~30V, LED Vf(max)= 57.6V LED 0.65A application ?

Hi PY

Not yet, The voltage on LED+ is VIN+VF. It is higher than 65V.

Hi Zhiqian,

Any suggest device that can be use for such application ? thanks!

Hi, PY

As the output voltage is always higher than the VIN, why customer still wants to use buck-boost version? How about Boost version?

Hi Zhiqian

Forget to mentioned that LED Vf min = 10V, LED Vf max = 57V, Vi = 19 - 30V, so need  buck-boost.

customer is consider LM3423BBLSCSEV. Is it look the best option ?

Hi, PY

I doesn't support for this device. Pls check with another E2E thread.

By the way, I want to know why there are so large range for the LED Vf? Any special requirement?

Hi Zhiqian,

Can Rsense be moved to LED- side?

Because RnD currently uses Richtek ICs, Rsense is placed on the LED-.

Thanks & best regards,

Hi, David

This sense resistor is used to detect the output current of the converter. It cannot change.