Rainbow Electronics MAX16825 - Manual (Page 10)

MAX16824/MAX16825
Pulse-Width Dimming (MAX16825)
The MAX16825 provides three methods of pulsed-width
current dimming.
One method of pulse dimming the output channels is to
drive OE low while latching a different set of three bits
data. Holding OE low allows the output channels to fol-
low the state of the output latches. The duty cycle
depends on LE’s frequency. All output channels are
affected at the same time.
High-Voltage, Three-Channel Linear
High-Brightness LED Drivers
10 ______________________________________________________________________________________
LE
CLK
DO D1 D2
DO
t R t F
t OEL t OEH
t OEW
20%
80%
t DO
t DS
t DH
t CL t CH t CP
t LW
t LS
DIN
DOUT
OE
OUT_
50% 50%
50% 50%
50%
50%
50%
50% 50%
50% 50%
Figure 3. 4-Wire Serial-Interface Timing Diagram