LP39542 Datasheet, PDF (20/58 Pages) National Semiconductor (TI) – Advanced Lighting Management Unit

Overlapping mode
MODE_CTRL[1:0] = [10]
Peak Input Signal Level
Range vs Gain Setting
30008531
RGB Output Synchronization to
External Clock
The RGB pattern generator and high current flash driver tim-
ing can be synchronized to external clock with following con-
figuration.
1. Set PWM_SYNC bit in Enables register to 1
30008532
2. Feed SYNC/PWM pin with 5 MHz clock
By this the internal 5 MHz clock is disabled from pattern gen-
erator and flash timing circuitry.
The external clock signal frequency will fully determine the
timings related to RGB and Flash.
Note: The boost converter will use internal 5 MHz clock even
if the external clock is available.
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