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IRF7811 Datasheet(PDF) 12 Page - Analog Devices

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

IRF7811 Datasheet(HTML) 12 Page - Analog Devices

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ADP1878/ADP1879
Data heet
Rev. A | Page 12 of 40
Figure 34. Frequency vs. Load Current, 1.0 MHz, VOUT = 5 V
Figure 35. UVLO vs. Temperature
Figure 36. Maximum Duty Cycle vs. Frequency
Figure 37. Maximum Duty Cycle vs. High Voltage Input (VIN)
Figure 38. Minimum Off Time vs. Temperature
Figure 39. Minimum Off Time vs. VREG (Low Input Voltage)
1000
1450
1400
1350
1300
1250
1200
1150
1100
1050
0
8000
800
1600 2400 3200 4000 4800 5600 6400 7200
LOAD CURRENT (mA)
VIN = 16.5V
VIN = 13V
+125°C
+25°C
–40°C
2.649
2.658
2.657
2.656
2.655
2.654
2.653
2.652
2.651
2.650
–40
120
100
80
60
40
20
0
–20
TEMPERATURE (°C)
55
60
65
70
75
80
85
90
95
300
400
500
600
700
800
900
1000
FREQUENCY (kHz)
+125°C
+25°C
–40°C
62
64
66
68
70
72
74
76
78
80
82
5.5
6.7
7.9
9.1
10.3
11.5
12.7
13.9
15.1
16.3
VIN (V)
+125°C
+25°C
–40°C
180
680
630
580
530
480
430
380
330
280
230
–40
120
100
80
60
40
20
0
–20
TEMPERATURE (°C)
VREG = 2.7V
VREG = 5.5V
VREG = 3.6V
180
680
630
580
530
480
430
380
330
280
230
2.7
5.5
5.1
4.7
4.3
3.9
3.5
3.1
VREG (V)
+125°C
+25°C
–40°C


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