UC384XA - UC284XA
Figure 9. Current Sense Input Threshold vs.
Error Amp Output Voltage.
V
th
(V)
1.0
D95IN338
Figure 12. Output Saturation Voltage vs. Load
Current.
V
sat
(V)
D95IN341
V
i
=15V
-1
V
i
T
A
=25˚C
0.8
-2
Source Saturation
(Load to Ground)
T
A
=25˚C
T
A
=-40˚C
T
A
=125˚C
0.6
3
V
i
=15V
80µs Pulsed Load 120Hz Rate
0.4
2
T
A
=-40˚C
T
A
=25˚C
Sink Saturation
(Load to V
i
)
0
200
400
600
T
A
=-40˚C
0.2
0.0
1
0
GND
I
O
(mA)
0
2
4
6
V
O
(V)
Figure 10. Reference Voltage Change vs.
Source Current..
60
D95IN339
Figure 13. Supply Current vs. Supply Voltage.
I
i
(mA)
20
D95IN342
V
i
=15V
50
40
T
A
=-40˚C
T
A
=125˚C
15
30
T
A
=25˚C
10
20
10
0
0
20
40
60
5
R
T
=10K
C
T
=3.3nF
V
FB
=0V
I
Sense
=0V
T
A
=25˚C
UCX843/45
80
100 I
ref
(mA)
0
0
10
UCX842/44
20
30
V
i
(V)
Figure 11. Reference Short Circuit Current vs.
Temperature..
I
SC
(mA)
100
90
80
70
60
50
-55
-25
0
25
50
75
100 T
A
(˚C)
V
i
=15V
R
L
≤0.1Ω
D95IN340
6/16
STMICROELECTRONICS [ STMICROELECTRONICS ]
