UC3844, UC3845, UC2844, UC2845
0
−4.0
−8.0
−12
−16
−20
−24
110
V
= 15 V
CC
V
= 15 V
CC
R ≤ 0.1 W
L
90
70
50
T = 125°C
A
T = −55°C
A
T = 25°C
A
0
20
I
40
60
80
100
120
−55
−25
0
25
50
75
100
125
, REFERENCE SOURCE CURRENT (mA)
T , AMBIENT TEMPERATURE (°C)
A
ref
Figure 8. Reference Voltage Change
versus Source Current
Figure 9. Reference Short Circuit Current
versus Temperature
V
= 15 V
I = 1.0 mA to 20 mA
V
= 12 V to 25 V
CC
CC
T = 25°C
A
O
T = 25°C
A
2.0 ms/DIV
2.0 ms/DIV
Figure 10. Reference Load Regulation
Figure 11. Reference Line Regulation
0
−1.0
−2.0
Source Saturation
(Load to Ground)
V
= 15 V
80 ms Pulsed Load
CC
V
CC
V
= 15 V
C = 1.0 nF
CC
120 Hz Rate
T
= 25°C
A
L
90%
T = 25°C
A
T
= −55°C
A
3.0
2.0
1.0
0
T
A
= −55°C
T
A
= 25°C
10%
Sink Saturation
)
GN
D
(Load to V
CC
50 ns/DIV
0
200
400
600
800
I , OUTPUT LOAD CURRENT (mA)
O
Figure 12. Output Saturation Voltage
versus Load Current
Figure 13. Output Waveform
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