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ADP7105ARDZ-3.3-R7 датащи(PDF) 23 Page - Analog Devices

номер детали ADP7105ARDZ-3.3-R7
подробное описание детали  20 V, 500 mA, Low Noise LDO Regulator with Soft Start
PDF  28 Pages
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

ADP7105ARDZ-3.3-R7 датащи(HTML) 23 Page - Analog Devices

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Data Sheet
ADP7105
Rev. 0 | Page 23 of 28
In the case where the board temperature is known, use the ΨJB
thermal characterization parameter to estimate the junction
temperature rise (see Figure 77 and Figure 78). Maximum
junction temperature (TJ) is calculated from the board tempera-
ture (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 31.3°C/W for the 8-lead SOIC package (see Table 7).
Figure 77. LFCSP
Figure 78. SOIC
TOTAL POWER DISSIPATION (W)
0
20
40
60
80
100
120
140
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0
TB = 25°C
TB = 50°C
TB = 65°C
TB = 85°C
TJ MAX
TOTAL POWER DISSIPATION (W)
0
20
40
60
80
100
120
140
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
TB = 25°C
TB = 50°C
TB = 65°C
TB = 85°C
TJ MAX



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