UC3842A, UC3843A, UC2842A, UC2843A
V sat , OUTPUT SATURATION VOLTAGE (V)
0
V
CC
T
A
= 25°C
T
A
= −55°C
−1.0
−2.0
Source Saturation
(Load to Ground)
V
CC
= 15 V
80
ms
Pulsed Load
120 Hz Rate
90%
V
CC
= 15 V
C
L
= 1.0 nF
T
A
= 25°C
3.0
T
A
= −55°C
2.0
1.0
0
0
Sink Saturation
(Load to V
CC
)
T
A
= 25°C
GND
10%
200
400
600
I
O
, OUTPUT LOAD CURRENT (mA)
800
50 ns/DIV
Figure 14. Output Saturation Voltage
versus Load Current
Figure 15. Output Waveform
V O , OUTPUT VOLTAGE
I CC , SUPPLY CURRENT (mA)
20 V/DIV
V
CC
= 30 V
C
L
= 15 pF
T
A
= 25°C
25
20
15
10
UCX843A
5
0
UCX842A
R
T
= 10 k
C
T
= 3.3 nF
V
FB
= 0 V
I
Sense
= 0 V
T
A
= 25°C
20
V
CC
, SUPPLY VOLTAGE
30
40
I CC , SUPPLY CURRENT
100 mA/DIV
100 ns/DIV
0
10
Figure 16. Output Cross Conduction
Figure 17. Supply Current versus
Supply Voltage
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