Typical Performance Characteristics
R
(K
T
%
50
50
2nF
C
1nF
C
30
5nF
5nF
C
C
500pF
20
10
C
20
10
10nF
C
200pF
C
5
5
100pF
C
10nF
C
3
2
V
= 15 V
O
CC
2
1
V
=
15
CC
2O 5
T
=
25
T
1
10
10
20
30
50
100
200
300
20
30
50
100
200
300
KHz)
KHz)
f
Figure 1. Timing Resistor vs. Oscillator Frequency.
f
Figure 2. Output Dead-Time vs. Oscillator Frequenc .y
Dmax
(%)
(dB)
V
=
15 V
CC
=
90
80
V
2V to 4V
O
100K
O
25
R
=
L
C
80
70
60
40
60
50
40
20
15 V
V
3.3nF
=
CC
T
=
25
0
-20
3
5
1
2
10
100
1K
10K
100K
1M
f (Hz)
R (
T
Figure 3. Maximum Output Duty Cycle vs.
Timing Resistor (MIK3842/4 .3)
Figure 4. Error Amp Open-Loop Gain vs.
Fr equency
.
V
th
I
SC
(mA)
(V)
V
= 15 V
V
= 15V
CC
100
1.0
90
80
0.8
0.6
O
25 C
T
O
125 C
T
70
0.4
0.2
60
50
O
)
0
25 50
75
100
T
0
2
4
V
(
O
Figure 6. Reference Short Circuit Current vs.
Temperature
Figure 5. Current Sense Input Threshold vs.
Error Amp Output Voltage.
.
BEIJING ESTEK ELECTRONICS CO.,LTD
6
ESTEK [ Estek Electronics Co. Ltd ]
