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LT7184S Datasheet(PDF) 20 Page - Analog Devices

No. de pieza LT7184S
Descripción Electrónicos  Dual Channel 9A, 16V PolyPhase Step-Down Silent Switcher 2 with Digital Power System Management
PDF  52 Pages
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Fabricante Electrónico  AD [Analog Devices]
Página de inicio  http://www.analog.com
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LT7184S Datasheet(HTML) 20 Page - Analog Devices

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Data Sheet
LT7184S
analog.com
Rev. 0
20 of 52
Figure 28. Maximum Output Current Change with
Temperature
Figure 29. Efficiency/Power Loss, Full-Load Range
Figure 30. Load Regulation VOUT = 1V,
Full-Load Range
Figure 31. Radiated EMI Performance No-Load
(CISPR25 Radiated Emission Test with Class 5
Peak Limits)
Figure 32. Radiated EMI Performance Full-Load
(CISPR25 Radiated Emission Test with Class 5 Peak Limits)
EXTVCC = 4V
XGL5030-601
VOUT = 1.2V
PVIN = 12V
fSW = 1000kHz
IOUTMAX CHANGE RANGE 0
IOUTMAX CHANGE RANGE 1
IOUTMAX CHANGE RANGE 2
IOUTMAX CHANGE RANGE 3
READ TEMPERATURE (°C)
–50
–30
–10
10
30
50
70
90
110
130
150
–5
–4
–3
–2
–1
0
1
2
EXTVCC = 4V
XGL5030-521
CURRENT LIMIT RANGE = 3
POWER LOSS
fSW = 1000kHz
VOUT = 1V
PVIN = 12V
FASTSLEW = 1
FASTSLEW = 0
IOUT (A)
–10
–8
–6
–4
–2
0
2
4
6
8
10
30
40
50
60
70
80
90
100
0
0.4
0.8
1.2
1.6
2.0
2.4
2.8
EFFICIENCY
–10
–8
–6
–4
–2
0
2
4
6
8
10
PVIN = 12V
fSW = 1000kHz
XGL5030-521
VOUT FASTSLEW = 1
VOUT FASTSLEW = 0
0.990
0.992
0.994
0.996
0.998
1.000
1.002
1.004
1.006
1.008
1.010
LOAD CURRENT (A)
CLASS 5 PEAK LIMIT
SLOW SW SLEW RATE
FAST SW SLEW RATE
FREQUENCY (MHz)
0.1
1
10
100
1k
–20
–10
0
10
20
30
40
50
60
EVAL-LT7184S-AZ EV KIT (WITH EMI FILTER INSTALLED),
14V INPUT TO 1.2V AND 3.3V OUTPUT AT NO LOAD,
fSW = 1000kHz
EVAL-LT7184S-AZ EVKIT (WITH EMI FILTER INSTALLED),
14V INPUT TO 1.2V AT 9A AND 3.3V AT 9A OUTPUT,
fSW = 1000kHz
CLASS 5 PEAK LIMIT
SLOW SW SLEW RATE
FAST SW SLEW RATE
FREQUENCY (MHz)
0.1
1
10
100
1k
–20
–10
0
10
20
30
40
50
60



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