LTM4623_15 Datasheet, PDF (17/26 Pages) Linear Technology – Ultrathin 20VIN, 3A Step-Down DC/DC Module Regulator

Applications Information
1.6
V_IN = 16V
1.4
V_IN = 12V
V_IN = 5V
1.2
1.6
V_IN = 16V
1.4
V_IN = 12V
V_IN = 5V
1.2
1.0
1.0
0.8
0.8
0.6
0.6
0.4
0.4
0.2
0.2
0
0
1
2
3
LOAD CURRENT (A)
4623 F08
Figure 8. 1.0V Output Power Loss
0
0
1
2
3
LOAD CURRENT (A)
4623 F09
Figure 9. 1.5V Output Power Loss
1.6
V_IN = 16V
1.4
V_IN = 12V
1.2
1.0
0.8
0.6
0.4
0.2
0
0
1
2
3
LOAD CURRENT (A)
4623 F11
Figure 11. 5V Output Power Loss
3.5
3
2.5
2
1.5
1
0LFM
0.5
200LFM
400LFM
0
30 40 50 60 70 80 90 100 110 120 130
AMBIENT TEMPERATURE (°C)
4623 F14
Figure 14. 16V to 1V Derating Curve,
No Heat Sink
3.5
3
2.5
2
1.5
1
0LFM
0.5
200LFM
400LFM
0
30 40 50 60 70 80 90 100 110 120 130
AMBIENT TEMPERATURE (°C)
4623 F12
Figure 12. 5V to 1V Derating Curve,
No Heat Sink
3.5
3
2.5
2
1.5
1
0LFM
0.5
200LFM
400LFM
0
30 40 50 60 70 80 90 100 110 120 130
AMBIENT TEMPERATURE (°C)
4623 F15
Figure 15. 5V to 1.5V Derating Curve,
No Heat Sink
LTM4623
1.6
V_IN = 16V
1.4
V_IN = 12V
V_IN = 5V
1.2
1.0
0.8
0.6
0.4
0.2
0
0
1
2
3
LOAD CURRENT (A)
4623 F10
Figure 10. 3.3V Output Power Loss
3.5
3
2.5
2
1.5
1
0LFM
0.5
200LFM
400LFM
0
30 40 50 60 70 80 90 100 110 120 130
AMBIENT TEMPERATURE (°C)
4623 F13
Figure 13. 12V to 1V Derating Curve,
No Heat Sink
3.5
3
2.5
2
1.5
1
0LFM
0.5
200LFM
400LFM
0
30 40 50 60 70 80 90 100 110 120 130
AMBIENT TEMPERATURE (°C)
4623 F16
Figure 16. 12V to 1.5V Derating Curve,
No Heat Sink
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4623fa
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