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UC3842A Datasheet(PDF) 4 Page - Motorola, Inc

Part No. UC3842A
Description  HIGH PERFORMANCE CURRENT MODE CONTROLLERS
Download  14 Pages
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Maker  MOTOROLA [Motorola, Inc]
Homepage  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

UC3842A Datasheet(HTML) 4 Page - Motorola, Inc

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UC3842A, 43A UC2842A, 43A
4
MOTOROLA ANALOG IC DEVICE DATA
Figure 1. Timing Resistor versus
Oscillator Frequency
Figure 2. Output Deadtime versus
Oscillator Frequency
Figure 3. Oscillator Discharge Current
versus Temperature
Figure 4. Maximum Output Duty Cycle
versus Timing Resistor
Figure 5. Error Amp Small Signal
Transient Response
Figure 6. Error Amp Large Signal
Transient Response
0.5
µs/DIV
VCC = 15 V
AV = –1.0
TA = 25°C
10 k
20 k
50 k
100 k
200 k
500 k
1.0 M
fOSC, OSCILLATOR FREQUENCY (Hz)
VCC = 15 V
TA = 25°C
10 k
20 k
50 k
100 k
200 k
500 k
1.0 M
fOSC, OSCILLATOR FREQUENCY (Hz)
VCC = 15 V
TA = 25°C
–55
–25
0
25
50
75
100
125
TA, AMBIENT TEMPERATURE (°C)
VCC = 15 V
VOSC = 2.0 V
RT, TIMING RESISTOR (Ω)
800
1.0 k
2.0 k
3.0 k
4.0 k
6.0 k
8.0 k
VCC = 15 V
CT = 3.3 nF
TA = 25°C
Idischg = 9.5 mA
Idischg = 7.2 mA
2.55 V
2.5 V
2.45 V
VCC = 15 V
AV = –1.0
TA = 25°C
0.1
µs/DIV
2.5 V
3.0 V
2.0 V
80
50
20
8.0
5.0
2.0
0.8
100
50
20
10
5.0
2.0
1.0
9.0
8.5
8.0
7.5
7.0
100
90
80
70
60
50
40


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