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STLC3080 数据表(PDF) 17 Page - STMicroelectronics

部件名 STLC3080
功能描述  SUBSCRIBER LINE INTERFACE CIRCUIT
PDF  23 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STLC3080 数据表(HTML) 17 Page - STMicroelectronics

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Figure B2. Rfeed allowed values vs. Ilim (Vbat = -54V).
Figure B3. Rfeed allowed values vs. Ilim (Vbat = -60V).
EXAMPLE:
Considering the following parameters:
Vbat = -48V, max Tamb = 70
°C, Ilim = 25mA,
Qext able to dissipate 1W, the possible values of
Rfeed can be found in fig. 1 and are limited by the
b2 curve (upper limit) and the a1 curve (lower
limit).
In particular considering the Ilim = 25mA the
Rfeed allowed range will be:
500
Ω < Rfeed < 1700Ω
STLC3080
17/23



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