MIC4834 Datasheet, PDF (4/12 Pages) Micrel Semiconductor – Low Noise Dual 220 VPP EL Driver

Micrel
Typical Characteristics
Switching Frequency
vs SW Resistor
400
350
300
250
200
150
100
50
0
SWITCHING RESISTOR (kOhm)
Total Input Current
vs. Input Voltage
60
f = 225Hz
EL
55
C = 2.2nF
OUT
50
f = 62kHz
SW
45
Size = 4in²
40
35
30
f = 82kHz
25 ^SW
Size = 3in²
202 _{2.5 3 3.5 4 4.5 5 5.5 6}
INPUT VOLTAGE (V)
Output Voltage
vs. Input Voltage
240
200
160
120
80 _{f = 45kHz}
SW
40
f
EL
=
225Hz
C = 2.2nF
OUT
02 _{2.5 3 3.5 4 4.5 5 5.5 6}
INPUT VOLTAGE (V)
Recommended Switching
Frequency Vs. Total Lamp Size
140
120
100
80
60
40
20
00 _{1 2 3 4 5 6}
TOTAL LAMP SIZE (in²)
Total Input Current
vs. Input Voltage
90
f = 225Hz
85
EL
80
C = 2.2nF
OUT
75
f = 42kHz
SW
70
Size = 6in²
65
60
55
50 f = 50kHz
SW
45 _{Size = 5in2}
402 _{2.5 3 3.5 4 4.5 5 5.5 6}
INPUT VOLTAGE (V)
Brightness
vs. Input Voltage
16
14
12
10
8
6
Distance = 2 in
4
f = 135kHz
SW
f = 225Hz
2
EL
L = 220µH
02 _{2.5 3 3.5 4 4.5 5 5.5 6}
INPUT VOLTAGE (V)
MIC4834
Total Input Current
vs. Input Voltage
40
f = 225Hz
35
EL
C = 2.2nF
OUT
30
f = 94kHz
SW
25
Size = 2in²
20
15
10
f = 116kHz
5 ^SW
Size = 1in²
02 _{2.5 3 3.5 4 4.5 5 5.5 6}
INPUT VOLTAGE (V)
CS Voltage
vs. Input Voltage
120
100
80
60
40 _{f = 45kHz}
SW
20
f
EL
=
225Hz
C = 2.2nF
OUT
02 _{2.5 3 3.5 4 4.5 5 5.5 6}
INPUT VOLTAGE (V)
October 2008
4
M9999-100908-A