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LS7642 数据表(PDF) 5 Page - LSI Computer Systems

部件名 LS7642
功能描述  VOLTAGE CONTROLLED LIGHT DIMMER
PDF  5 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  LSI [LSI Computer Systems]
网页  http://www.lsicsi.com
标志 LSI - LSI Computer Systems

LS7642 数据表(HTML) 5 Page - LSI Computer Systems

  LS7642 Datasheet HTML 1Page - LSI Computer Systems LS7642 Datasheet HTML 2Page - LSI Computer Systems LS7642 Datasheet HTML 3Page - LSI Computer Systems LS7642 Datasheet HTML 4Page - LSI Computer Systems LS7642 Datasheet HTML 5Page - LSI Computer Systems  
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 5 / 5 page
background image
6
n = 0
SYNC
4
6
EXT
SENSE/ 5
BCV
Touch Sense
Load Status Detect
Zero Cross and
Clock Gen
Safety
Shutdown
On/Off
Sweep
and
Control
+
−
7−bit DAC
Gen
Trigger
TRIG/
2
8
1
7
VSS
(-V)
VDD
(+V)
Figure 7. LS7642 Block Diagram
100k
100k
100k
100k
100k
100k
100k
50k
50k
50k
50k
50k
50k
b<0>
uC
Px.3
Px.2
Px.1
Px.0
Px.4
Px.5
Px.6
BCV
3
LS7642
Vo
VDD
VSS
1
7
+V
−V
Figure 8. Digital Control of Brightness with a uC.
+5V
Vs
100k
7642−102009−5
b<1>
b<2>
b<3>
b<4>
b<5>
b<6>
where N =
b<n> * 2
128
Vs
* N ,
Vo =
n



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