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UC3842A Datasheet(PDF) 6 Page - ON Semiconductor

Part No. UC3842A
Description  High Performance Current Mode Controllers
Download  18 Pages
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

UC3842A Datasheet(HTML) 6 Page - ON Semiconductor

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UC3842A, UC3843A, UC2842A, UC2843A
http://onsemi.com
6
Figure 8. Error Amp Open Loop Gain and
Phase versus Frequency
Figure 9. Current Sense Input Threshold
versus Error Amp Output Voltage
Figure 10. Reference Voltage Change
versus Source Current
Figure 11. Reference Short Circuit Current
versus Temperature
Figure 12. Reference Load Regulation
Figure 13. Reference Line Regulation
2.0 ms/DIV
2.0 ms/DIV
VCC = 12 V to 25 V
TA = 25°C
0
20
40
60
80
100
120
Iref, REFERENCE SOURCE CURRENT (mA)
VCC = 15 V
TA = 55°C
TA = 125°C
−55
−25
0
25
50
75
100
125
TA, AMBIENT TEMPERATURE (°C)
VCC = 15 V
RL ≤ 0.1 W
VCC = 15 V
IO = 1.0 mA to 20 mA
TA = 25°C
0
−4.0
−8.0
−12
−16
−20
−24
110
90
70
50
TA = 25°C
−20
10 M
10
f, FREQUENCY (Hz)
Gain
Phase
VCC = 15 V
VO = 2.0 V to 4.0 V
RL = 100 K
TA = 25°C
0
30
60
90
120
150
180
100
1.0 k
10 k
100 k
1.0 M
0
20
40
60
80
100
0
VO, ERROR AMP OUTPUT VOLTAGE (V)
0
0.2
0.4
0.6
0.8
1.0
1.2
2.0
4.0
6.0
8.0
VCC = 15 V
TA = 25°C
TA = −55°C
TA = 125°C


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