UC2842 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
UC2842 Datasheet PDF : 15 Pages
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Figure 10: Output Saturation Voltagevs. Load
Current.
Vsat
D95IN341
(V)
Vi
Source Saturation
(Load to Ground)
-1
TA=25˚C
TA=-40˚C
-2
Vi=15V
80µs Pulsed Load 120Hz Rate
3
2 TA=-40˚C
TA=25˚C
1
Sink Saturation
GND
(Load to Vi)
0
0
200
400
600
IO(mA)
Figure 12: Output Waveform.
90%
Vi =15V
CL = 1.0nF
TA = 25°C
UC2842B/3B/4B/5B - UC3842B/3B/4B/5B
Figure 11: Supply Current vs. Supply Voltage.
Ii
(mA)
D95IN342
20
15
10
RT=10K
CT=3.3nF
VFB=0V
ISense=0V
5
TA=25˚C
0
0
10
20
30
Vi(V)
Figure 13: Output Cross Conduction
Vi =30V
CL = 15pF
TA = 25°C
VO
20V/DIV
ICC
10%
50ns/DIV
Figure 14: Oscillator and Output Waveforms.
100ns/DIV
100mA/DIV
Vi
7
8
5V REG
PWM
RT
CLOCK
4
OSCILLATOR
ID
CT
5
GND
CT
OUTPUT
6
OUTPUT
LARGE RT/SMALL CT
CT
OUTPUT
SMALL RT/LARGE CT
D95IN344
7/15
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