MIC4827
Micrel
Typical Characteristics
Total Input Current
vs. Input Voltage
SW
60
INPUT CURRENT (mA)
70
INPUT CURRENT (mA)
Total Input Current
vs. Temperature
OUTPUT VOLTAGE (V
P-P
)
50
40
30
20
10
0
0
Lamp = 2in
2
L = 220µH
C
= 0.1µF
OUT
D = BAV20WS
R
= 442k
SW
R = 2M
EL
R
R
= 562k
= 1M
EL
R = 562k
60
SW
R
EL
= 1M
50
40
30
20
10
R
SW
= 332k
R
EL
= 3.32M
V
IN
= 3.0V
Lamp = 2in
2
L = 220µH
C
OUT
= 0.1µF
D = BAV20WS
R
SW
=
442k
R
EL
=
2M
R
SW
= 332k
R
EL
= 3.32M
1
2
3
4
5
INPUT VOLTAGE (V)
6
0
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
200
R = 442k
180
SW
R = 2M
160
EL
140
R
SW
= 562k
120
R
EL
= 1M
100
80 R
SW
= 332k
Lamp = 2in2
60 R
EL
= 3.32M
L = 220µH
C
OUT
= 0.1µF
40
D = BAV20WS
20
0
0
1
2
3
4
5
6
INPUT VOLTAGE (V)
Output Voltage
vs. Input Voltage
Output Voltage
vs. Temperature
240 R = 562k
R
SW
= 442k
SW
220 R = 1M
R
EL
= 2M
200
EL
180
160
140
120 R
SW
= 332k
100 R
EL
= 3.32M
V = 3.0V
IN
80
Lamp = 2in
2
60
L = 220µH
40
C
OUT
= 0.1µF
20
D = BAV20WS
0
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
OUTPUT VOLTAGE (V
PP
)
100
90
80
70
60
50
40
30
20
CS Voltage
vs. Input Voltage
R
SW
= 442k
R
EL
= 2M
V
CS
(V
AVG
)
100
90
CS Voltage
vs. Temperature
V
CS
(V
AVG
)
R
SW
= 562k
R
EL
= 1M
R
SW
= 332k
R
EL
= 3.32M
Lamp = 2in
2
L = 220µH
C
OUT
= 0.1µF
D = BAV20WS
80 R
SW
= 562k
R
EL
= 1M
70
60
50
40
R
SW
= 332k
R
EL
= 3.32M
R
SW
=
442k
R
EL
=
2M
V
IN
= 4.0V
Lamp = 2in
2
L = 220µH
C
OUT
= 0.1µF
D = BAV20WS
10
0
0
1
2
3
4
5
INPUT VOLTAGE (V)
6
30
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
Switch Resistance
vs. Input Voltage
6
5
4
3
2
1
0
1
2
3
4
5
INPUT VOLTAGE (V)
6
SWITCHING FREQUENCY (kHz)
7
SWITCH RESISTANCE (Ω)
1000
Switching Frequency
vs. Switch Resistor
10000
EL FREQUENCY (Hz)
EL Frequency
vs. EL Resistor
100
1000
10
100
1
100
1000
10000
SWITCH RESISTOR (kΩ)
10
0.1
1
EL RESISTOR (MΩ)
10
Switching Frequency
vs. Input Voltage
SWITCHING FREQUENCY (Hz)
120
EL FREQUENCY (Hz)
100
80
60
R
SW
= 562k
40
20
0
1
2
3
4
5
INPUT VOLTAGE (V)
6
R
SW
= 332k
R
SW
= 442k
400
350
300
250
200
150
100
50
0
1
EL Frequency
vs. Input Voltage
120
FREQUENCY (KHz)
100
80
60
40
20
Switching Frequency
vs. Temperature
R
SW
= 332k
R
SW
= 442k
R
SW
= 562k
R
EL
= 1M
R
EL
= 2M
R
EL
= 3.32M
2
3
4
5
INPUT VOLTAGE (V)
6
V
IN
= 3.0V
0
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
MIC4827
4
January 2005
MICREL [ MICREL SEMICONDUCTOR ]
