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ManualsBrandsLinear Technology ManualsDC / DC Adjustable Switching RegulatorsSwitching Regulator IC Step-Down QFN- 41.6V
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LT8640/LT8640-1
10
Rev.C
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Radiated EMI Performance
(CISPR25 Radiated Emission Test with Class 5 Peak Limits)
TYPICAL PERFORMANCE CHARACTERISTICS
AMPLITUDE (dBµV/m)
40
45
50
35
30
25
20
15
10
-5
0
5
FREQUENCY (MHz)
0 900
100 200 300
500400 600
700 800
1000
AMPLITUDE (dBµV/m)
40
45
50
35
30
25
20
15
10
-5
0
5
FREQUENCY (MHz)
0 900
100 200 300
500400 600
700 800
1000
DC2202A DEMO BOARD
(WITH EMI FILTER INSTALLED)
14V INPUT TO 5V OUTPUT AT 4A, f
SW
= 2MHz
8640 G42
CLASS 5 PEAK LIMIT
FIXED FREQUENCY MODE
SPREAD SPECTRUM MODE
HORIZONTAL POLARIZATION
PEAK DETECTOR
CLASS 5 PEAK LIMIT
FIXED FREQUENCY MODE
SPREAD SPECTRUM MODE
VERTICAL POLARIZATION
PEAK DETECTOR
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