参数资料
型号: LTM4601AHVMPV
厂商: LINEAR TECHNOLOGY CORP
元件分类: 稳压器
英文描述: SWITCHING REGULATOR, PBGA133
封装: 15 X 15 MM, 2.82 MM HEIGHT, LEAD FREE, LGA-133
文件页数: 7/30页
文件大小: 519K
代理商: LTM4601AHVMPV
LTM4601AHV
15
4601ahvfb
Figure 7. 1.5V Output Power Loss
Figure 9. No Heat Sink 5VIN
Figure 10. BGA Heat Sink 5VIN
Figure 8. 3.3V Output Power Loss
applicaTions inForMaTion
LOAD CURRENT (A)
0
POWER
LOSS
(W)
1.0
2.0
3.0
2
4
6
8
4601AHV F07
10
4.0
5.0
0.5
1.5
2.5
3.5
4.5
12
24VIN
12VIN
5VIN
LOAD CURRENT (A)
0
POWER
LOSS
(W)
1
2
3
4
6
2
4
6
8
4601AHV F08
10
12
5
24VIN
12VIN
AMBIENT TEMPERATURE (°C)
50
0
MAXIMUM
LOAD
CURRENT
(A)
2
4
6
8
10
12
60
70
80
90
4601AHV F09
100
5VIN, 1.5VOUT 0LFM
5VIN, 1.5VOUT 200LFM
5VIN, 1.5VOUT 400LFM
AMBIENT TEMPERATURE (°C)
50
0
MAXIMUM
LOAD
CURRENT
(A)
2
4
6
8
10
12
60
70
80
90
4601AHV F10
100
5VIN, 1.5VOUT 0LFM
5VIN, 1.5VOUT 200LFM
5VIN, 1.5VOUT 400LFM
Thermal Considerations and Output Current Derating
The power loss curves in Figures 7 and 8 can be used
in coordination with the load current derating curves in
Figures 9 to 16 for calculating an approximate
θJA for the
modulewithvariousheatsinkingmethods.Thermalmodels
arederivedfromseveraltemperaturemeasurementsatthe
benchandthermalmodelinganalysis.ThermalApplication
Note103providesadetailedexplanationoftheanalysisfor
thethermalmodelsandthederatingcurves.Tables 3and4
provide a summary of the equivalent
θJA for the noted
conditions.Theseequivalent
θJAparametersarecorrelated
to the measured values, and are improved with air flow.
The case temperature is maintained at 100°C or below
for the derating curves. The maximum case temperature
of 100°C is to allow for a rise of about 13°C to 25°C in-
side the Module regulator with a thermal resistance
θJC
from junction to case between 6°C/W to 9°C/W. This will
maintain the maximum junction temperature inside the
device below 125°C.
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