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UC284XBD Fiches technique(PDF) 5 Page - Motorola, Inc

No de pièce UC284XBD
Description  HIGH PERFORMANCE CURRENT MODE CONTROLLERS
Download  16 Pages
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Fabricant  MOTOROLA [Motorola, Inc]
Site Internet  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

UC284XBD Fiches technique(HTML) 5 Page - Motorola, Inc

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UC3844B, 45B UC2844B, 45B
5
MOTOROLA ANALOG IC DEVICE DATA
–20
10 M
10
f, FREQUENCY (Hz)
Gain
Phase
0
30
60
90
120
150
180
100
1.0 k
10 k
100 k
1.0 M
0
20
40
60
80
100
0
VO, ERROR AMP OUTPUT VOLTAGE (VO)
0
0.2
0.4
0.6
0.8
1.0
1.2
2.0
4.0
6.0
8.0
TA = – 55°C
VCC = 15 V
RL ≤ 0.1 Ω
Figure 5. Error Amp Open Loop Gain and
Phase versus Frequency
Figure 6. Current Sense Input Threshold
versus Error Amp Output Voltage
Figure 7. Reference Voltage Change
versus Source Current
Figure 8. Reference Short Circuit Current
versus Temperature
–16
0
Iref, REFERENCE SOURCE CURRENT (mA)
20
40
60
80
100
120
–12
– 8.0
– 4.0
0
50
–55
TA, AMBIENT TEMPERATURE (°C)
– 25
0
25
50
75
100
125
70
90
110
–20
–24
TA = 125°C
VCC = 15 V
VO = 2.0 V to 4.0 V
RL = 100 k
TA = 25°C
VCC = 15 V
TA = 25°C
2.0 ms/DIV
2.0 ms/DIV
VCC = 12 V to 25 V
TA = 25°C
VCC = 15 V
IO = 1.0 mA to 20 mA
TA = 25°C
Figure 9. Reference Load Regulation
Figure 10. Reference Line Regulation
VCC = 15 V
TA = 125°C
TA = 25°C
TA = – 55°C


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