LTM4609V View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTM4609V Datasheet PDF : 28 Pages
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Typical Applications
8
7
6
5
4
3
2
1
0
25 35 45 55 65 75 85 95 105
AMBIENT TEMPERATURE (°C)
36VIN TO 20VOUT WITH 0LFM
36VIN TO 20VOUT WITH 200LFM
36VIN TO 20VOUT WITH 400LFM
4609 F13
Figure 13. 36VIN to 20VOUT without Heat Sink
LTM4609
8
7
6
5
4
3
2
1
0
25 35 45 55 65 75 85 95 105
AMBIENT TEMPERATURE (°C)
36VIN TO 20VOUT WITH 0LFM
36VIN TO 20VOUT WITH 200LFM
36VIN TO 20VOUT WITH 400LFM
4609 F14
Figure 14. 36VIN to 20VOUT with Heat Sink
applications information
Table 4. Boost Mode
DERATING CURVE
Figure 7, 9
Figure 7, 9
Figure 7, 9
Figure 8, 10
Figure 8, 10
Figure 8, 10
VOUT (V)
16, 30
16, 30
16, 30
16, 30
16, 30
16, 30
POWER LOSS CURVE
Figure 5
Figure 5
Figure 5
Figure 5
Figure 5
Figure 5
AIR FLOW (LFM)
0
200
400
0
200
400
HEAT SINK
None
None
None
BGA Heat Sink
BGA Heat Sink
BGA Heat Sink
θJA (°C/W)*
11.4
8.5
7.5
11.0
7.9
7.1
Table 5. Buck Mode
DERATING CURVE
Figure 11, 13
Figure 11, 13
Figure 11, 13
Figure 12, 14
Figure 12, 14
Figure 12, 14
VOUT (V)
12, 20
12, 20
12, 20
12, 20
12, 20
12, 20
POWER LOSS CURVE
Figure 6
Figure 6
Figure 6
Figure 6
Figure 6
Figure 6
AIR FLOW (LFM)
0
200
400
0
200
400
HEAT SINK
None
None
None
BGA Heat Sink
BGA Heat Sink
BGA Heat Sink
θJA (°C/W)*
8.2
5.9
5.4
7.5
5.3
4.8
HEAT SINK MANUFACTURER
PART NUMBER
WEBSITE
Aavid Thermalloy
375424B00034G
www.aavidthermalloy.com
Cool Innovations
4-050503P to 4-050508P
www.coolinnovations.com
*The results of thermal resistance from junction to ambient θJA are based on the demo board DC 1198A. Thus, the maximum temperature on board is treated
as the junction temperature (which is in the µModule regulator for most cases) and the power losses from all components are counted for calculations. It
has to be mentioned that poor board design may increase the θJA.
4609ff
For more information www.linear.com/LTM4609
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