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MIC4833 Datasheet(PDF) 9 Page - Micrel Semiconductor

Part # MIC4833
Description  Low Noise Dual 220 VPP EL Driver With Output Voltage Slew Rate Control
PDF  12 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC4833 Datasheet(HTML) 9 Page - Micrel Semiconductor

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Micrel
MIC4833
October 2008
9
M9999-100308
(408) 955-1690
Application Circuit
ENA
VDD
RSW
REL
ENB
REL
1.78M
L1
220µH
MIC4833
RSW
332k
GND
SLEW
VIN
Li Ion
3V to 4.2V
C1
0.01µF
ELA
ELB
COM
CS
SW
RSLEW
50k
C3
2.2nF
250V
C2
10µF
VIN
Li Ion
3V to 4.2V
High
Low
High
Low
High
Low
EL Lamp A
EL Lamp B
Figure 6: Typical Li-Ion Powered MIC4833 Circuit
Note: Table 2 applies to circuit shown in Figure 6.
Panel
Frequency
(Hz)
150
200
250
300
350
400
500
Total
Panel
Area
(inch
2)
Capacitance
(nF)
REL (MΩ)
2.80
2.10
1.69
1.40
1.21
1.05
.850
RSW (kΩ)
324
340
357
383
392
402
442
0.4
2
fSW (kHz)
138
132
126
118
116
112
102
RSW (kΩ)
357
365
392
422
442
475
511
1
5
fSW (kHz)
125
122
116
108
102
95
88
RSW (kΩ)
402
453
487
549
590
649
681
2
10
fSW (kHz)
112
100
92
83
76
70
66
RSW (kΩ)
464
511
590
698
768
909
1000
3
15
fSW (kHz)
98
88
77
65
58
50
45
RSW (kΩ)
523
665
750
909
1000
1000
4
20
fSW (kHz)
86
68
60
50
45
45
RSW (kΩ)
619
825
909
1000
5
25
fSW (kHz)
72
55
50
45
RSW (kΩ)
698
953
1000
6
30
fSW (kHz)
65
47
45
RSW (kΩ)
1000
8
40
fSW (kHz)
45
Table 2: Recommended RSW & REL Values For Total Panel Sizes



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