MIC4832 Datasheet, PDF (8/11 Pages) Micrel Semiconductor – Low Noise 220Vp-p EL Driver

Micrel
Application Circuit
MIC4832
Figure 5: Typical Li-Ion Powered MIC4832 Circuit
Size
(inch²)
0.4
1
2
3
Capacitance
(nF)
2
5
10
15
Lamp Frequency
(Hz)
100
200 300
400
500
600
REL (MΩ)
RSW (kΩ)
fSW (kHz)
RSW (kΩ)
fSW (kHz)
RSW (kΩ)
fSW (kHz)
RSW (kΩ)
fSW (kHz)
2.82 1.69 1.1 0.837 0.665 0.562
240 252 273 281 257 269
150 143 132 128 116 105
257 295 353
140 122 102
300 333
120 108
313
115
Note: Table 1 applies to circuit shown in Figure 5.
Table 1: Recommended R_SW & R_EL values for various panel sizes
700
0.471
281
98
800
0.409
900
0.369
November 2007
8
M9999-111507-B