mic4833 Micrel Semiconductor, mic4833 Datasheet - Page 9

• Manufacturer Part Number: mic4833
• Description: Low Noise Dual 220 Vpp El Driver With Output Voltage Slew Rate Control
• Manufacturer: Micrel Semiconductor

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