MIC4833 Datasheet, PDF (4/12 Pages) Micrel Semiconductor – Low Noise Dual 220 VPP EL Driver With Output Voltage Slew Rate Control

Micrel
Typical Characteristics
Switching Frequency
vs SW Resistor
400
350
300
250
200
150
100
50
0
SWITCHING RESISTOR (kOhm)
Input Current vs.
EL Frequency (Dual EL Lamp)
60
55
2× 4 in²
50
45
2× 3 in²
40
2× 2 in²
35
30
2× 1 in²
25
20
V = 3.6V
IN
15
f = 75kHz
SW
10
EL FREQUENCY (Hz)
Total Input Current
vs. Input Voltage
60
f = 200Hz
55
EL
C = 2.2nF
50
OUT
45
f = 68kHz
40
SW
35
Size = 4in²
30
25
20 f = 88kHz
SW
15 _{Size = 3in2}
102 _{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
=
200Hz
C = 2.2nF
OUT
02 _{2.5 3 3.5 4 4.5 5 5.5 6}
INPUT VOLTAGE (V)
October 2008
EL Frequency
1600
vs EL Resistor
1400
1200
1000
800
600
400
200
00
1
2
3
4
5
ELRESISTOR (MOhm)
Recommended Switching
Frequency vs. Total Lamp Size
160
140
150Hz
120
200Hz
100
80 _300Hz
60 400Hz
40
20 _{V = 3.0V}
IN
00 _{1 2 3 4 5 6}
TOTAL LAMP SIZE (in²)
Total Input Current
vs. Input Voltage
80
f = 200Hz
75
EL
C = 2.2nF
70
OUT
65
f = 47kHz
60
SW
55
Size = 6in²
50
45
40 f = 55kHz
SW
35 _{Size = 5in2}
302 _{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)
4
MIC4833
Input Current vs.
EL Frequency (Single EL Lamp)
60
V = 3.6V
IN
50
f
SW
=
75kHz
4 in²
3 in²
40
30
2 in²
20
1 in²
10
0
EL FREQUENCY (Hz)
Total Input Current
vs. Input Voltage
40
f = 200Hz
EL
35
C = 2.2nF
OUT
30
f = 100kHz
25
SW
20
Size = 2in²
15
10
f = 122kHz
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
=
200Hz
C_OUT = 2.2nF
02 _{2.5 3 3.5 4 4.5 5 5.5 6}
INPUT VOLTAGE (V)
M9999-100308
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