LP8869C-Q1: Schematic and Layout review

Hi HaitaoVinyas

Our expert will reply to you early next week. Thanks for waiting.

Best regards.

Hi Vinyas,

1. We need the LED string specs and the input voltage range to check the feasibility of the FB divider design and diode/inductor selection.

2. A high frequency output capacitor should be added to the output. (100nF, for example). For layout design, minimize the SW(pin17) -> Diode -> High frequency cap -> GND(pin18).

Best regards,

Suchen