Applications Information-Derating Curves - Analog Devices Linear LTM 4700 User Manual

LTM4700

APPLICATIONS INFORMATION-DERATING CURVES

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V
1
V
0
0 10 20 30 40 50 60 70 80 90 100
LOAD CURRENT (A)
Figure 36. 0.8V Power Loss Curve
120
110
100
90
80
70
60
50
40
30
OLFM
20
200LFM
10
400LFM
0
30 40 50 60 70 80
AMBIENT TEMP (°C)
Figure 39. 5V to 0.8V Derating
Curve, No Heat Sink
120
110
100
90
80
70
60
50
40
30
OLFM
20
200LFM
10
400LFM
0
30 40 50 60 70 80
AMBIENT TEMP (°C)
Figure 42. 12V to 1.2V Derating
Curve, No Heat Sink
68
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= 5V, 350kHz
IN
1
= 12V, 350kHz
IN
0
0 10
4700 F36
Figure 37. 1.2 Power Loss Curve
120
110
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90
80
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40
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10
0
90 100 110 120 30 40
4700 F39
Figure 40. 12V to 0.8V Derating
Curve, No Heat Sink
120
110
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90
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10
0
90 100 110 120 30 40
4700 F42
Figure 43. 5V to 1.8V Derating
Curve, No Heat Sink
For more information
V = 5V, 425kHz
IN
V = 12V, 425kHz
IN
20 30 40 50 60 70 80 90 100
LOAD CURRENT (A)
4700 F37
OLFM
200LFM
400LFM
50 60 70 80 90 100 110 120
AMBIENT TEMP (°C)
4700 F40
OLFM
200LFM
400LFM
50 60 70 80 90 100 110 120
AMBIENT TEMP (°C)
4700 F43
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V = 5V, 500kHz
IN
1
V = 12V, 500kHz
IN
0
0 10 20 30 40 50 60 70 80 90 100
LOAD CURRENT (A)
Figure 38. 1.8V Power Loss Curve
120
110
100
90
80
70
60
50
40
30
OLFM
20
200LFM
10
400LFM
0
30 40 50 60 70 80 90 100 110 120
AMBIENT TEMP (°C)
Figure 41. 5V to 1.2V Derating
Curve, No Heat Sink
120
110
100
90
80
70
60
50
40
30
OLFM
20
200LFM
10
400LFM
0
30 40 50 60 70 80 90 100 110 120
AMBIENT TEMP (°C)
Figure 44. 12V to 1.8V Derating
Curve, No Heat Sink
4700 F38
4700 F41
4700 F44
Rev. B