MC34025, MC33025
Vref , REFERENCE VOLTAGE CHANGE (mV)
I SC, REFERENCE SHORT CIRCUIT CURRENT (mA)
0
−5.0
V
CC
= 15 V
−10
−15
−20
−25
−30
0
10
20
30
40
I
Source
, SOURCE CURRENT (mA)
50
T
A
= − 55°C
T
A
= +125°C
T
A
= + 25°C
66
65.6
65.2
64.8
64.4
64
−55
V
CC
= 15 V
− 25
0
25
50
75
T
A
, AMBIENT TEMPERATURE (°C)
100
125
Figure 8. Reference Voltage Change
versus Source Current
Figure 9. Reference Short Circuit Current
versus Temperature
2.0 mV/DIV
V
ref
LINE REGULATION 10 V − 24 V
2.0 ms/DIV
2.0 mV/DIV
V
ref
LINE REGULATION 1.0 mA − 10 mA
2.0 ms/DIV
Figure 10. Reference Line Regulation
Figure 11. Reference Load Regulation
Δ
Vth(CL), CURRENT LIMIT THRESHOLD CHANGE (mV)
Vth , SHUTDOWN THRESHOLD VOLTAGE (V)
4.0
2.0
0
− 2.0
− 4.0
− 6.0
− 8.0
−10
−12
− 50
− 25
0
25
50
75
T
A
, AMBIENT TEMPERATURE (°C)
100
125
1.50
1.46
1.42
1.38
1.34
1.30
−55
V
CC
= 15 V
−25
0
25
50
75
T
A
, AMBIENT TEMPERATURE (°C)
100
125
Figure 12. Current Limit Comparator Threshold
Change versus Temperature
Figure 13. Shutdown Comparator Threshold
Voltage versus Temperature
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