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UC3844 Datasheet(PDF) 5 Page - ON Semiconductor

Part No. UC3844
Description  HIGH PERFORMANCE CURRENT MODE CONTROLLERS
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

UC3844 Datasheet(HTML) 5 Page - ON Semiconductor

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UC3844, 45 UC2844, 45
5
MOTOROLA ANALOG IC DEVICE DATA
Figure 7. Reference Voltage Change
versus Source Current
Figure 8. Reference Short Circuit Current
versus Temperature
Figure 9. Reference Load Regulation
Figure 10. Reference Line Regulation
2.0 ms/DIV
2.0 ms/DIV
VCC = 12 V to 25 V
TA = 25°C
0
20
40
60
80
100
120
Iref, REFERENCE SOURCE CURRENT (mA)
VCC = 15 V
TA = –55°C
TA = 25°C
TA = 125°C
–55
–25
0
25
50
75
100
125
TA, AMBIENT TEMPERATURE (°C)
VCC = 15 V
RL ≤ 0.1 Ω
Figure 11. Output Saturation Voltage
versus Load Current
Figure 12. Output Waveform
50 ns/DIV
VCC = 15 V
CL = 1.0 nF
TA = 25°C
800
600
400
200
0
IO, OUTPUT LOAD CURRENT (mA)
VCC
TA = 25°C
TA = –55°C
Sink Saturation
(Load to VCC)
Gnd
Source Saturation
(Load to Ground)
TA = –55°C
VCC = 15 V
80
µs Pulsed Load
120 Hz Rate
TA = 25°C
VCC = 15 V
IO = 1.0 mA to 20 mA
TA = 25°C
0
–4.0
–8.0
–12
–16
–20
–24
110
90
70
50
90%
10%
0
1.0
2.0
3.0
–2.0
–1.0
0


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