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UC3843BVN Datasheet(PDF) 5 Page - ON Semiconductor

Part # UC3843BVN
Description  HIGH PERFORMANCE CURRENT MODE CONTROLLERS
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

UC3843BVN Datasheet(HTML) 5 Page - ON Semiconductor

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UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV
http://onsemi.com
5
Figure 6. Error Amp Small Signal
Transient Response
Figure 7. Error Amp Large Signal
Transient Response
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
-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
VCC = 15 V
TA = -55°C
TA = 25°C
-16
0
Iref, REFERENCE SOURCE CURRENT (mA)
20
40
60
80
100
120
-12
-8.0
-4.0
0
-20
-24
TA = 125°C
VCC = 15 V
RL ≤ 0.1 Ω
50
-55
TA, AMBIENT TEMPERATURE (°C)
-25
0
25
50
75
100
125
70
90
110
1.0 µs/DIV
0.5 µs/DIV
2.55 V
2.50 V
2.45 V
3.0 V
2.5 V
2.0 V
VCC = 15 V
AV = -1.0
TA = 25°C
VCC = 15 V
AV = -1.0
TA = 25°C


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