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ADM7155ACPZ-01-R7 Scheda tecnica(PDF) 20 Page - Analog Devices

Il numero della parte ADM7155ACPZ-01-R7
Spiegazioni elettronici  600 mA, Ultralow Noise, High PSRR, RF Linear Regulator
PDF  24 Pages
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

ADM7155ACPZ-01-R7 Scheda tecnica(HTML) 20 Page - Analog Devices

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ADM7155
Data Sheet
Rev. C | Page 20 of 24
TOTAL POWER DISSIPATION (W)
2.8
2.6
2.4
3.0
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
25
155
145
125
102
85
65
45
135
115
95
75
55
35
6400mm2
500mm2
25mm2
TJ MAX
Figure 59. Junction Temperature vs. Total Power Dissipation for
the 8-Lead SOIC, 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
130
160
150
140
6400mm2
500mm2
25mm2
TJ MAX
Figure 60. Junction Temperature vs. Total Power Dissipation for
the 8-Lead SOIC, TA = 50°C
TOTAL POWER DISSIPATION (W)
2.0
1.6
1.8
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
65
75
85
95
105
115
125
135
155
145
6400mm2
500mm2
25mm2
TJ MAX
Figure 61. Junction Temperature vs. Total Power Dissipation for
the 8-Lead SOIC, TA = 85°C
Thermal Characterization Parameter (ΨJB)
When board temperature is known, use the thermal
characterization parameter, ΨJB, to estimate the junction
temperature rise (see Figure 62 and Figure 63). Maximum
junction temperature (TJ) is calculated from the board
temperature (TB) and power dissipation (PD) using the following
formula:
TJ = TB + (PD × ΨJB)
(5)
The typical value of ΨJB is 15.1°C/W for the 8-lead LFCSP
package and 17.9°C/W for the 8-lead SOIC package.
TOTAL POWER DISSIPATION (W)
9.0
8.5
8.0
7.0
6.0
7.5
6.5
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
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 62. Junction Temperature vs. Total Power Dissipation for
the 8-Lead LFCSP
TOTAL POWER DISSIPATION (W)
5.5
7.5
7.0
6.5
6.0
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
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 63. Junction Temperature vs. Total Power Dissipation for
the 8-Lead SOIC
PSRR PERFORMANCE
The ADM7155 is available in four models that optimize power
dissipation and PSRR performance as a function of input and
output voltage. See Table 9 and Table 10 for selection guides.



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