MC33441 Datasheet, PDF (6/12 Pages) ON Semiconductor – Electroluminescent Lamp Driver IC

MC33441
TYPICAL OPERATING CHARACTERISTICS
300
VDD = 2.65V
250
Coil = 1mH
EL lamp = 2.2nF
200
150
100
50
0
50K
75K
100K
150K
200K
REXT (OHM)
Figure 4. Oscillator Frequency vs. REXT
700
600
500
400
300
200
100
0
50K
VDD = 2.65V
Coil = 1mH
EL lamp = 2.2nF
75K
100K
150K
200K
REXT (OHM)
Figure 5. Lamp Frequency vs. REXT
25
20
15
10
VDD = 2.65V
5 Lamp Freq. = 365Hz
EL lamp = 2.2nF
0
0.56
0.82
1
1.33
1.47
COIL INDUCTANCE (mH)
Figure 6. Current Consumption vs. Coil Inductance
30
25
20
15
10
Coil = 1mH
5 _{Lamp Freq. = 365Hz}
EL Lamp = 2.2nF
0
1.8
2
2.65
3
3.5
VDD (V)
Figure 7. Current Consumption vs. VDD
138
136
134
132
130
128
126
124
122
120
50K
VDD = 2.65V
Coil = 1mH
EL Lamp = 2.2nF
75K
100K
150K
200K
REXT (OHM)
Figure 8. Output Voltage vs. REXT
150
145
140
135
130
125
120
VDD = 2.65V
Lamp Freq. = 365Hz
115 ^{EL Lamp = 2.2nF}
110
0.56
0.82
1
1.33
1.47
COIL INDUCTANCE (mH)
Figure 9. Output Voltage vs. Coil Inductance
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