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5220-DS01-R 数据表(PDF) 86 Page - Broadcom Corporation. |
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5220-DS01-R 数据表(HTML) 86 Page - Broadcom Corporation. |
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86 / 90 page ![]() BCM5220 Preliminary Data Sheet 04/20/04 Broa d c om Co rp o r a t i o n Page 74 Auxiliary Status 4 Register (Shadow Register) Document 5220-DS04-405-R Section 9: Ther mal Chara c ter i s t ic s Theta JC for this package in still air is 21.23 ºC/W. The BCM5220KPB is designed and rated for a maximum junction temperature of 125 ºC. Theta JC for this package in still air is 18.5ºC/W. The BCM5220KPT is designed and rated for a maximum junction temperature of 125ºC. Table 57: Theta-JA vs. Airflow for the BCM5220KPB (FBGA 64) AIRFLOW (Feet Per Minute) 0 100 200 400 600 Theta - JA(ºC/W) 35.15 25.57 22.99 20.88 20.30 Table 58: Theta-JA vs. Airflow for the BCM5220KPT (64 TQFP) AIRFLOW (Feet Per Minute) 0 100 200 400 600 Theta - JA(ºC/W) 56.4 51.9 49.9 48.2 47.2 |
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