UC3842A, UC3843A, UC2842A, UC2843A
0
−1.0
−2.0
Source Saturation
(Load to Ground)
V
= 15 V
CC
80 ꢀ s Pulsed Load
V
CC
V
= 15 V
CC
C = 1.0 nF
T
= 25°C
90%
120 Hz Rate
L
A
T = 25°C
A
T
= −55°C
A
3.0
2.0
1.0
0
T
A
= −55°C
T
= 25°C
A
10%
Sink Saturation
)
GND
(Load to V
CC
50 ns/DIV
0
200
400
600
800
I , OUTPUT LOAD CURRENT (mA)
O
Figure 14. Output Saturation Voltage
versus Load Current
Figure 15. Output Waveform
25
20
V
= 30 V
C = 15 pF
CC
L
T = 25°C
A
15
10
R = 10 k
T
C = 3.3 nF
T
V
= 0 V
FB
5
0
I
= 0 V
Sense
T = 25°C
A
0
10
20
30
40
100 ns/DIV
V
, SUPPLY VOLTAGE
CC
Figure 16. Output Cross Conduction
Figure 17. Supply Current versus
Supply Voltage
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