AS3665
Datasheet, Confidential - D e t a i l e d D e s c r i p t i o n C h a r g e P u m p
Table 36. Driver_Setup9 Register
Addr: A8h
Driver_Setup9 Register
Bit
Bit Name
Default Access
Description
LED9 RGB Color Correction (see page 16) slope
00h
01h
RGB Color Correction disabled
+0.15%/oC
4:0
color_slope9
00h
R/W
...
0Fh
...
+2.263%/oC
11h
...
1Fh
-2.263%/oC
...
-0.15%/oC
LED9 Logarithmic/Linear Ramping (see page 16)
5
loglin9
1b
R/W
0
linear ramping/dimming
1
00
logarithmic ramping/dimming
LED9 Faders (see page 16)
fader disabled
7:6
fader_src9
00b
R/W
01
use fader1 (see page 23)
10
11
use fader2
use fader3
Charge Pump
The charge pump used the two flying capacitors C FLY1 and C FLY2 to operate in 1:1, 1:1.5 and 1:2 mode boosting the
input supply VBAT to VOUT (shown in Figure 19 ). An implemented soft start mechanism reduces the inrush current.
Battery current is smoothed when switching the charge pump on and also at each switching condition. This precaution
reduces electromagnetic radiation significantly.
Figure 19. Charge Pump
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AS3665
www.austriamicrosystems.com
Revision 1.0.2
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