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USX2064 датащи(PDF) 40 Page - Microchip Technology

номер детали USX2064
подробное описание детали  USB 2.0 Hi-Speed 4-Port Hub Controller with Battery Charging
PDF  54 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

USX2064 датащи(HTML) 40 Page - Microchip Technology

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USX2064
DS00001986E-page 40
2023 Microchip Technology Inc and its subsidiaries.
6.2.1
PACKAGE THERMAL SPECIFICATIONS
Thermal parameters are measured or estimated for devices with the exposed pad soldered to thermal vias in a multi-
layer 2S2P PCB per JESD51. Thermal resistance is measured from the die to the ambient air. The values provided are
based on the package body, die size, maximum power consumption, 85°C ambient temperature, and 125°C junction
temperature of the die.
Use the following formulas to calculate the junction temperature:
TJ = P x JA + TA
TJ = P x JT + TT
TJ = P x JC + TC
TABLE 6-3:
PACKAGE THERMAL RESISTANCE PARAMETERS
Symbol
USX2064
(°C/W)
Velocity (Meters/s)
JA
40.1
0
35.0
1
JT
0.5
0
0.7
1
JC
6.3
0
6.3
1
TABLE 6-4:
LEGEND
Symbol
Description
TJ
Junction temperature
P
Power dissipated
JA
Junction-to-ambient-temperature
JC
Junction-to-top-of-package
JT
Junction-to-bottom-of-case
TA
Ambient temperature
TC
Temperature of the bottom of the case
TT
Temperature of the top of the case



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