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LTM4643 Datasheet(PDF) 22 Page - Analog Devices

Part # LTM4643
Description  20VIN, 15A Step-Down DC/DC μModule Regulator
PDF  30 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LTM4643 Datasheet(HTML) 22 Page - Analog Devices

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LTM4638
22
Rev. C
For more information www.analog.com
APPLICATIONS INFORMATION
Figure 20. 12V to 3.3V Derating
Curve, No Heat Sink
Figure 21. 12V to 5V Derating
Curve, No Heat Sink
Table 3. 1.0V Output
DERATING CURVE
VIN (V)
POWER LOSS CURVE
AIR FLOW (LFM)
HEAT SINK
θJA (°C/W)
Figures 15, 16
5, 12
Figure 11
0
None
15
Figures 15, 16
5, 12
Figure 11
200
None
12
Figures 15, 16
5, 12
Figure 11
400
None
11
Table 4. 1.5V Output
DERATING CURVE
VIN (V)
POWER LOSS CURVE
AIR FLOW (LFM)
HEAT SINK
θJA (°C/W)
Figures 17, 18
5, 12
Figure 12
0
None
15
Figures 17, 18
5, 12
Figure 12
200
None
12
Figures 17, 18
5, 12
Figure 12
400
None
11
Table 5. 3.3V Output
DERATING CURVE
VIN (V)
POWER LOSS CURVE
AIR FLOW (LFM)
HEAT SINK
θJA (°C/W)
Figures 19, 20
5, 12
Figure 13
0
None
15
Figures 19, 20
5, 12
Figure 13
200
None
12
Figures 19, 20
5, 12
Figure 13
400
None
11
Table 6. 5V Output
DERATING CURVE
VIN (V)
POWER LOSS CURVE
AIR FLOW (LFM)
HEAT SINK
θJA (°C/W)
Figure 21
12
Figure 14
0
None
15
Figure 21
12
Figure 14
200
None
12
Figure 21
12
Figure 14
400
None
11
AMBIENT TEMPERATURE (°C)
30
0
12
14
10
6
4
2
8
16
90
80
70
110
100
120
40
60
50
4638 F20
400LFM
200LFM
OLFM
AMBIENT TEMPERATURE (°C)
30
0
12
14
10
6
4
2
8
16
90
80
70
110
100
120
40
60
50
4638 F21
400LFM
200LFM
OLFM



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