MP3384L – 50V, 4-STRING, WHITE LED DRIVER

MP3384L Rev. 1.0

www.MonolithicPower.com

10

12/27/2013

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Layout Considerations

Careful attention must be paid to the PCB board

layout and components placement. Proper layout

of the high frequency switching path is critical to

prevent noise and electromagnetic interference.

High-frequency pulse current flows through the

loop: MP3384L SW to PGND pin (U1), output

diode (D1), and output capacitor (C3), The loop

path must be as short as possible (See Figure 3).

SW

PGND

Figure 3: Example Layout

The exposed pad connects internally to the GND

pin, and all logic signals refer to GND. Externally

connect PGND to GND, and placed far from the

logic signals.