Datasheet

LTM4625
18
Rev D
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APPLICATIONS INFORMATION
Figure 17. 12V to 3.3V Derating Curve,
No Heat Sink
Figure 18. 12V to 5V Derating Curve,
No Heat Sink
Figure 16. 5V to 3.3V Derating Curve,
No Heat Sink
Table3. 1.0V Output
DERATING CURVE V
IN
(V) POWER LOSS CURVE AIR FLOW (LFM) HEAT SINK
θ
JA(°C/W)
Figures 12, 13 5, 12 Figure 8 0 None 22
Figures 12, 13 5, 12 Figure 8 200 None 19
Figures 12, 13 5, 12 Figure 8 400 None 18
Table4. 1.5V Output
DERATING CURVE V
IN
(V) POWER LOSS CURVE AIR FLOW (LFM) HEAT SINK
θ
JA(°C/W)
Figures 14, 15 5, 12 Figure 9 0 None 22
Figures 14, 15 5, 12 Figure 9 200 None 19
Figures 14, 15 5, 12 Figure 9 400 None 18
Table5. 3.3V Output
DERATING CURVE V
IN
(V) POWER LOSS CURVE AIR FLOW (LFM) HEAT SINK
θ
JA(°C/W)
Figures 16, 17 5, 12 Figure 10 0 None 22
Figures 16, 17 5, 12 Figure 10 200 None 19
Figures 16, 17 5, 12 Figure 10 400 None 18
Table6. 5V Output
DERATING CURVE V
IN
(V) POWER LOSS CURVE AIR FLOW (LFM) HEAT SINK
θ
JA(°C/W)
Figure 18 12 Figure 11 0 None 22
Figure 18 12 Figure 11 200 None 19
Figure 18 12 Figure 11 400 None 18
AMBIENT TEMPERATURE (°C)
30
0
LOAD CURRENT (A)
1
2
3
90 100 110
6
4645 F16
40 50 60 70 80 120
4
5
400LFM
200LFM
0LFM
AMBIENT TEMPERATURE (°C)
30
0
LOAD CURRENT (A)
1
2
3
90 100 110
6
4645 F17
40 50 60 70 80 120
4
5
400LFM
200LFM
0LFM
AMBIENT TEMPERATURE (°C)
30
0
LOAD CURRENT (A)
1
2
3
90 100 110
6
4645 F18
40 50 60 70 80 120
4
5
400LFM
200LFM
0LFM
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