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ADM7172ACPZ-4.2-R7 数据表(PDF) 22 Page - Analog Devices

部件名 ADM7172ACPZ-4.2-R7
功能描述  Input voltage range
PDF  24 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

ADM7172ACPZ-4.2-R7 数据表(HTML) 22 Page - Analog Devices

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Data Sheet
ADM7172
TOTAL POWER DISSIPATION (W)
6400mm2
500mm2
25mm2
TJ MAX
25
35
45
55
65
75
85
95
105
115
125
135
145
155
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0
Figure 65. LFCSP, TA = 25°C
TOTAL POWER DISSIPATION (W)
1.8
2.0
2.2
2.4
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
50
60
70
80
90
100
110
120
140
160
130
150
6400mm2
500mm2
25mm2
TJ MAX
Figure 66. LFCSP, TA = 50°C
TOTAL POWER DISSIPATION (W)
1.5
0.8 0.9 1.0 1.1 1.2 1.3 1.4
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
65
75
85
95
105
115
125
135
155
145
6400mm2
500mm2
25mm2
TJ MAX
Figure 67. LFCSP, TA = 85°C
In the case where the board temperature is known, use the
thermal characterization parameter, ΨJB, to estimate the
junction temperature rise. Maximum junction temperature (TJ)
is calculated from the board temperature (TB) and power
dissipation (PD) using the following formula:
TJ = TB + (PD × ΨJB)
(5)
TOTAL POWER DISSIPATION (W)
9
8
7
6
5
4
3
2
1
0
0
160
140
120
100
80
60
40
20
TB = 25°C
TB = 50°C
TB = 65°C
TB = 85°C
TJ MAX
Figure 68. LFCSP Power Dissipation for Various Board Temperatures
TYPICAL APPLICATIONS CIRCUITS
ADM7172
6.5V, 2A
LDO
4V TO 6.5V
3.3V
HIGH
SPEED
CLOCK
DRIVER
Figure 69. Clock Driver Power
ADM7172
6.5V, 2A
LDO
2.3V TO 6.5V
1.8V
HIGH
SPEED
ADC
Figure 70. High Speed ADC Power
Rev. C | Page 21 of 23



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