4 Board Layout

Figure 4-1, Figure 4-2, Figure 4-3 and Figure 4-4 show the board layout for the LM3645EVM. The EVM offers resistors, capacitors, and jumpers to enable the device and to configure it as desired.

The LM3645 will dissipate power, especially during high current and long duration flash events. Power will also be dissipated on the flash LEDs. The EVM layout is designed to minimize temperature rise during operation. It is recommended that in order to prevent overheating, repeated flash events in very short time intervals is avoided.

Figure 4-1 Top Assembly Layer

Figure 4-2 Middle Layer 1 Routing

Figure 4-3 Middle Layer 2 Routing

Figure 4-4 Bottom Assembly Layer (UNMIRRORED)