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CS52843 Datasheet(PDF) 5 Page - ON Semiconductor

Part # CS52843
Description  Current Mode PWM Control Circuit
PDF  9 Pages
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

CS52843 Datasheet(HTML) 5 Page - ON Semiconductor

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CS52843
http://onsemi.com
5
TYPICAL PERFORMANCE CHARACTERISTICS
900
800
700
600
500
400
300
200
100
.0005
.001
.002
.003
.005
.01
.02 .03 .04 .05
CT (μF)
100
90
80
70
60
50
40
30
20
10
RT (Ω)
Figure 2. Oscillator Frequency vs CT
Figure 3. Oscillator Duty Cycle vs RT
RT = 680 Ω
RT = 1.5 kΩ
RT = 10 kΩ
VREF
COMP
VCC
VOUT
GND
VFB
Sense
OSC
CT
VREF
VCC
VOUT
GND
A
0.1 μF
0.1 μF
1.0 kΩ
2N2222
RT
100 kΩ
5.0 kΩ
Sense
Adjust
4.7 kΩ
1.0 kΩ
Error Amp
Adjust
4.7 kΩ
Figure 4. Test Circuit Open Loop Laboratory Test Fixture
1.0 W
CIRCUIT DESCRIPTION



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