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IRF7811 Datasheet(PDF) 8 Page - Analog Devices

Part No. IRF7811
Description  Synchronous Buck Controller
Download  40 Pages
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

IRF7811 Datasheet(HTML) 8 Page - Analog Devices

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ADP1878/ADP1879
Data Sheet
Rev. A | Page 8 of 40
Figure 10. Efficiency—1.0 MHz, VOUT = 0.8 V
Figure 11. Efficiency—1.0 MHz, VOUT = 1.8 V
Figure 12. Efficiency—1.0 MHz, VOUT = 5 V
Figure 13. Output Voltage Accuracy—300 kHz, VOUT = 0.8 V
Figure 14. Output Voltage Accuracy—300 kHz, VOUT = 1.8 V
Figure 15. Output Voltage Accuracy—300 kHz, VOUT = 7 V
100
95
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35
30
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15
10
5
0
10
100
1k
10k
100k
LOAD CURRENT (mA)
TA = 25°C
VOUT = 0.8V
fSW = 1.0MHz
WÜRTH INDUCTOR:
744303012, L = 0.12µH, DCR = 0.33mΩ
INFINEON FETs:
BSC042N03MS G (UPPER/LOWER)
VIN = 13V (PSM)
VIN = 16.5V (PSM)
VIN = 13V
VIN = 16.5V
100
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55
50
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40
35
30
25
20
15
10
5
0
10
100
1k
10k
100k
LOAD CURRENT (mA)
TA = 25°C
VOUT = 1.8V
fSW = 1.0MHz
WÜRTH INDUCTOR:
744303022, L = 0.22µH, DCR = 0.33mΩ
INFINEON FETs:
BSC042N03MS G (UPPER/LOWER)
VIN = 13V (PSM)
VIN = 16.5V (PSM)
VIN = 13V
VIN = 16.5V
100
95
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
10
100
1k
10k
100k
LOAD CURRENT (mA)
TA = 25°C
VOUT = 5V
fSW = 1.0MHz
WÜRTH INDUCTOR:
744355090, L = 0.9µH, DCR = 1.6mΩ
INFINEON FETs:
BSC042N03MS G (UPPER/LOWER)
VIN = 13V (PSM)
VIN = 16.5V (PSM)
VIN = 13V
VIN = 16.5V
0.807
0.806
0.805
0.804
0.803
0.802
0.801
0.800
0.799
0.798
0.797
0.796
0.795
0.794
0.793
0.792
0
2000
4000
6000
8000
10,000
LOAD CURRENT (mA)
+125°C
+25°C
–40°C
VIN = 13V
+125°C
+25°C
–40°C
VIN = 16.5V
1.821
1.816
1.811
1.806
1.801
1.796
1.791
1.786
0
1500
3000
4500
6000
7500
9000 10,500 12,000 13,500 15,000
LOAD CURRENT (mA)
+125°C
+25°C
–40°C
VIN = 5.5V
+125°C
+25°C
–40°C
VIN = 13V
+125°C
+25°C
–40°C
VIN = 16.5V
7.100
7.095
7.090
7.085
7.080
7.075
7.070
7.065
7.060
7.055
7.050
7.045
7.040
7.035
7.030
7.025
7.020
7.015
7.010
7.005
7.000
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
LOAD CURRENT (mA)
+125°C
+25°C
–40°C
VIN = 13V
VIN = 16.5V


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