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AS3820 датащи(PDF) 19 Page - Dialog Semiconductor

номер детали AS3820
подробное описание детали  16-Channel White LED Controller for LCD Backlight
PDF  52 Pages
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производитель  DIALOG [Dialog Semiconductor]
домашняя страница  http://www.dialog-semiconductor.com/
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AS3820 датащи(HTML) 19 Page - Dialog Semiconductor

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AS3820
16-Channel White LED Controller for LCD Backlight
Rev. 1.1
Datasheet
© 2019 Dialog Semiconductor
www.dialog-semiconductor.com
19 of 52
05-Feb-2019
Addr: 0x10
IDAC_FB1_COUNTER
Bit
Bit Name
Default
Access
Bit Description
7:0
IDAC_FB1_COUNTER
00000000
RW
Feedback 1 counter value. Can be
overwritten if
Fb_cnt_man_fb1 = 1
0x00... FB-current 0μA
0xFF... FB-current 255μA
Table 15: IDAC_FB1_COUNTER
Addr: 0x11
IDAC_FB12_COUNTER
Bit
Bit Name
Default
Access
Bit Description
7:0
IDAC_FB2_COUNTER
00000000
RW
Feedback 1 counter value. Can be
overwritten if
Fb_cnt_man_fb2 = 1
0x00... FB-current 0μA
0xFF... FB-current 255μA
Table 16: IDAC_FB2_COUNTER
Addr: 0x12
FBLOOP_CTRL
Bit
Bit Name
Default
Access
Bit Description
7:6
Vtrip
00
RW
Select gate trip voltage for feedback
00...5*(VDD/6)
01... 4*(VDD/6)
10... 3*(VDD/6)
11... 2*(VDD/6)
5
Fb_cnt_man_fb2
0
RW
0...FB2 counter runs automatically in
feedback loop
1...FB2 counter is set manual
4
Fb_cnt_man_fb1
0
RW
0...FB1 counter runs automatically in
feedback loop
1...FB1 counter is set manual
3:2
Fbcount_dn_time
01
RW
FB1 and FB2 counter down counting
clock cycle(1)
00...512μs
01...2048μs
10...4096μs
11...8192μs
1:0
Fbcount_up_time
01
RW
FB1 and FB2 counter up counting clock
cycle
00...1024μs
01... 256μs
10... 64μs
11... 16μs
Note 1.
Down counting starts after 200ms delay time.
Table 17: FBLOOP_CTRL



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