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Micrel MIC4833
October 2008 9 M9999-100308
(408) 955-1690
Application CircuitENAVDDRSWRELENBREL1.78ML1220ģHMIC4833RSW332kGNDSLEWVINLi Ion3V to 4.2VC10.01ģFELAELBCOMCSSWRSLEW50kC32.2nF250VC210ģFVINLi Ion3V to 4.2VHighLowHighLowHighLowEL Lamp AEL 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 (inch2)
Capacitance (nF)
REL (MŁ)
2.80
2.10
1.69
1.40
1.21
1.05
.850
RSW (kŁ)
324
340
357
383
392
402
442
0.4
2
fSW (kHz)
138
132
126
118
116
112
102
RSW (kŁ)
357
365
392
422
442
475
511
1
5
fSW (kHz)
125
122
116
108
102
95
88
RSW (kŁ)
402
453
487
549
590
649
681
2
10
fSW (kHz)
112
100
92
83
76
70
66
RSW (kŁ)
464
511
590
698
768
909
1000
3
15
fSW (kHz)
98
88
77
65
58
50
45
RSW (kŁ)
523
665
750
909
1000
1000
4
20
fSW (kHz)
86
68
60
50
45
45
RSW (kŁ)
619
825
909
1000
5
25
fSW (kHz)
72
55
50
45
RSW (kŁ)
698
953
1000
6
30
fSW (kHz)
65
47
45
RSW (kŁ)
1000
8
40
fSW (kHz)
45
Table 2: Recommended RSW & REL Values For Total Panel Sizes