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SILICON TOUCH TECHNOLOGY INC.
DM11A
Outputs Delay
Large in-rush currents will occur when the system activates all the outputs at once. To reduce
this effect, DM11A is designed to have a constant unit of delay (around 2.5ns) between outputs. The
delay sequence for every output goes like this: OUT0 (no delay) Æ OUT7 Æ OUT1 Æ OUT6 Æ
OUT2 Æ OUT5 Æ OUT3 Æ OUT4 (the largest delay).
Global Brightness Control
DM13A has no built-in global brightness control feature. In order to obtain a lower resolution
of global brightness control effect, two methods could be utilized. One is providing PWM signal
synchronized on latch pulse to modulate the output enable terminal (EN pin). The other is to adjust
the Rrext value or voltage drop across the external resistor. Please see the reference circuit below:
8-bit Constant Current LED Driver
Version:A.003
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