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