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LTC7151S Datasheet(PDF) 12 Page - Analog Devices

Part # LTC7151S
Description  18V, 3A/5A Step-Down Silent Switcher 3 with Ultra-Low Noise Reference
PDF  44 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LTC7151S Datasheet(HTML) 12 Page - Analog Devices

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Data Sheet
LT83203/LT83205
analog.com
Rev. B
12 of 44
Figure 10. 12VIN to 1.2VOUT Efficiency
Figure 11. 12VIN to 1.8VOUT Efficiency
Figure 12. 12VIN to 3.3VOUT Efficiency
Figure 13. 12VIN to 5VOUT Efficiency
Figure 14. Efficiency vs. VIN
Figure 15. SET Pin Current vs. Temperature
EFFICIENCY
POWER LOSS
L = XGL6060
1MHz, 1.50µH, (3.3mΩ)
2MHz, 0.68µH, (2.0mΩ)
3MHz, 0.47µH, (1.5mΩ)
4MHz, 0.22µH, (1.1mΩ)
LOAD CURRENT (A)
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
0
0.4
0.8
1.2
1.6
2.0
2.4
2.8
3.2
3.6
4.0
4.4
4.8
5.2
5.6
6.0
6.4
EFFICIENCY
POWER LOSS
L = XGL6060
1MHz, 2.20µH, (4.3mΩ)
2MHz, 1.20µH, (2.9mΩ)
3MHz, 0.68µH, (2.0mΩ)
4MHz, 0.68µH, (2.0mΩ)
LOAD CURRENT (A)
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
0
0.4
0.8
1.2
1.6
2.0
2.4
2.8
3.2
3.6
4.0
4.4
4.8
5.2
5.6
6.0
6.4
EFFICIENCY
POWER LOSS
L = XGL6060
1MHz, 3.30µH, (5.9mΩ)
2MHz, 1.50µH, (3.3mΩ)
3MHz, 1.00µH, (2.5mΩ)
4MHz, 1.00µH, (2.5mΩ)
LOAD CURRENT (A)
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
0
0.4
0.8
1.2
1.6
2.0
2.4
2.8
3.2
3.6
4.0
4.4
4.8
5.2
5.6
6.0
6.4
EFFICIENCY
POWER LOSS
L = XGL6060
1MHz, 3.30µH, (5.9mΩ)
2MHz, 2.20µH, (4.3mΩ)
3MHz, 1.50µH, (3.3mΩ)
4MHz, 1.00µH, (2.5mΩ)
LOAD CURRENT (A)
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
0
0.4
0.8
1.2
1.6
2.0
2.4
2.8
3.2
3.6
4.0
4.4
4.8
5.2
5.6
6.0
6.4
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
L = XGL6060, 1.5µH (DCR = 3.3mΩ)
VOUT = 1V
fSW = 1MHz
ILOAD = 1A
INPUT VOLTAGE (V)
3
6
9
12
15
18
60
65
70
75
80
85
90
95
100
VIN = 12V
VOUT = 1V
TEMPERATURE (°C)
–50
–25
0
25
50
75
100
125
150
99.0
99.2
99.4
99.6
99.8
100.0
100.2
100.4
100.6
100.8
101.0



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