Micrel
MIC4832
Application Circuit
Figure 5: Typical Li-Ion Powered MIC4832 Circuit
Size
(inch
2
)
0.4
1
2
3
Capacitance
(nF)
2
5
10
15
Lamp Frequency
(Hz)
R
EL
(MΩ
)
R
SW
(kΩ
)
f
SW
(kHz)
R
SW
(kΩ
)
f
SW
(kHz)
R
SW
(kΩ
)
f
SW
(kHz)
R
SW
(kΩ
)
f
SW
(kHz)
100
2.82
240
150
257
140
300
120
313
115
200
1.69
252
143
295
122
333
108
300
1.1
273
132
353
102
400
0.837
281
128
500
0.665
257
116
600
0.562
269
105
700
0.471
281
98
800
0.409
900
0.369
Note:
Table 1 applies to circuit shown in Figure 5.
Table 1: Recommended R
SW
& R
EL
values for various panel sizes
March 2009
8
M9999-033109-C