MP3384L – 50V, 4-STRING, WHITE LED DRIVER
MP3384L Rev. 1.0 www.MonolithicPower.com 10
12/27/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
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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.
