UC2842A(1999) 查看數據表（PDF） - STMicroelectronics
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UC2842A Datasheet PDF : 15 Pages
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UC2842A/3A/4A/5A - UC3842A/3A/4A/5A
Figure 4: Oscillator Discharge Current vs. Tem-
perature.
Idischg
(mA)
8.5
D95IN335
Vi=15V
VOSC=2V
8.0
7.5
7.0
-55 -25 0 25 50 75 100 TA(°C)
Figure 6: Current Sense Input Threshold vs. Er-
ror Amp Output Voltage.
Vth
(V)
Vi=15V
D95IN338
1.0
TA=25°C
0.8
TA=125°C
0.6
0.4
TA=-40°C
0.2
0.0
0
2
4
6
VO(V)
Figure 8: Reference Short Circuit Current vs.
Temperature.
ISC
(mA)
100
D95IN340
Vi=15V
RL≤0.1Ω
90
80
70
60
50
-55 -25 0
6/15
25 50 75 100 TA(°C)
Figure 5: Error Amp Open-Loop Gain and
Phase vs. Frequency.
(dB)
D95IN337 φ
Vi=15V
80
VO=2V to 4V 30
Gain
RL=100K
TA=25°C
60
60
40
90
Phase
20
120
0
150
-20
180
10 100 1K 10K 100K 1M f(Hz)
Figure 7: Reference Voltage Change vs.
Source Current.
D95IN339
60
Vi=15V
50
40
TA=-40°C
TA=125°C
30
20
10
0
0 20 40 60 80 100 Iref(mA)
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