MIC4826_09 Datasheet, PDF (4/12 Pages) Micrel Semiconductor – Low Input Voltage, 160VPP Output Voltage, EL Driver

MIC4826
Typical Characteristics
Total Input Current
vs. Input Voltage
50
45
R_SW = 562k, R_EL = 1M
40
35
30
R_SW = 442k
R_EL = 2M
25
20 R_SW = 332k
15 ^REL ^{= 3.32M}
10 Lamp = 2in²
L = 220µH
5 D = BAV19WS
00^COUT
=
1
0.1µF
2
3
4
5
6
INPUT VOLTAGE (V)
Output Voltage
vs. Temperature
200
180
160
140 _{RSW = 332k}
120 _{REL = 3.32M}
100
R_SW = 442k
R_EL = 2M
80
R_SW = 562k
60
R_EL = 1M
V_IN = 3.0V
Lamp = 2in²
40
L = 220µH
20
C_OUT = 0.1µF
D = BAV19WS
0-40 _{-20 0 20 40 60 80 100}
TEMPERATURE (°C)
Switch Resistance
vs. Input Voltage
7
6
5
4
3
2
1
01
2
3
4
5
6
INPUT VOLTAGE (V)
Switching Frequency
vs. Input Voltage
120
100
R_SW = 332k
80
R_SW = 442k
60
R_SW = 562k
40
20
01
2
3
4
5
6
INPUT VOLTAGE (V)
MIC4826
Micrel
Total Input Current
vs. Temperature
50
45
40
R_SW = 562k
R_EL = 1M
35
30
R_SW = 442k
R_EL = 2M
25
20
15
10 _{RSW = 332k}
5 R_EL = 3.32M
0-40 _{-20 0 20}
V_IN = 3.0V
Lamp = 2in²
L = 220µH
D = BAV19WS
C_OUT = 0.1µF
40 60 80 100
TEMPERATURE (°C)
Output Voltage Regulation
vs. Input Voltage
100
90 ^RSW ^{= 442k}
80 ^{REL = 2M}
70
60
50
R_SW = 562k
R_EL = 1M
R_SW = 332k
R_EL = 3.32M
40
30
20
Lamp = 2in²
10
L = 220µH
C_OUT = 0.01µF
01
2
3
4
5
6
INPUT VOLTAGE (V)
Switching Frequency
vs. Switch Resistor
1000
100
10
1
100
1000
10000
SWITCH RESISTOR (kΩ)
EL Frequency
vs. Input Voltage
400
350
300 ^REL ^{= 1M}
250 _{REL = 2M}
200
150
100
50
R_EL = 3.32M
01
2
3
4
5
6
INPUT VOLTAGE (V)
4
Output Voltage
vs. Input Voltage
200
180
160
R_SW = 442k
R_EL = 2M
140
R_SW = 562k
120
R_EL = 1M
100
80
R_SW = 332k
R_EL = 3.32M
60
40
20
01
2
3
Lamp = 2in²
L = 220µH
D = BAV19WS
C_OUT = 0.1µF
456
INPUT VOLTAGE (V)
CS Voltage
vs. Temperature
100
90
80
70 _{RSW = 332k}
60 R_EL = 3.32M
50
R_SW = 442k
R_EL = 2M
40
30
R_SW = 562k
R_EL = 1M
V_IN = 3.0V
Lamp = 2in²
20
L = 220µH
10
C_OUT = 0.1µF
D = BAV19WS
0-40 _{-20 0 20 40 60 80 100}
TEMPERATURE (°C)
10000
EL Frequency
vs. EL Resistor
1000
100
10
0.1
1
10
EL RESISTOR (MΩ)
Switching Frequency
vs. Temperature
120
100
R_SW = 332k
80
R_SW = 442k
60
R_SW = 562k
40
20
V_IN = 3.0V
0-40 _{-20 0 20 40 60 80 100}
TEMPERATURE (°C)
March 2009