參數(shù)資料
型號(hào)： L8551
廠商： Lineage Power
英文描述： Low-Power SLIC(低功耗用戶線接口（SLIC）)
中文描述： 低功耗用戶接口（低功耗用戶線接口電路（SLIC））
文件頁(yè)數(shù)： 28/32頁(yè)
文件大小： 526K
代理商： L8551
28
Lucent Technologies Inc.
Data Sheet
March 1997
L8551 Low-Power SLIC
Applications
(continued)
Power Derating
(continued)
This is a quadratic equation whose solution is in the
form:
–b b2
2a
Ignore the "+" term
Thus, 39 mA is the maximum allowable current limit in
the 32-pin PLCC package under the conditions given in
this example.
This type of analysis should be performed under the
conditions of the user’s particular application to ensure
adequate thermal design.
PCB Layout Information
Make the leads to BGND and V
BAT
as wide as possible
for thermal and electrical reasons. Also, maximize the
amount of PCB copper in the area of—and specifically
on—the leads connected to this device for the lowest
operating temperature.
When powering the device, ensure that no external
potential creates a voltage on any pin of the device that
exceeds the device ratings. In this application, some of
the conditions that cause such potentials during pow-
erup are the following: 1) an inductor connected to PT
and PR (this can force an overvoltage on V
BAT
through
the protection devices if the V
BAT
connection chatters)
and 2) inductance in the V
BAT
lead (this could resonate
with the V
BAT
filter capacitor to cause a destructive
overvoltage).
This device is normally used on a circuit card that is
subjected to hot plug-in, meaning the card is plugged
into a biased backplane connector. In order to prevent
damage to the IC, all ground connections must be
applied before, and removed after, all other connec-
tions.
X
-----------------------------4ac
=
I
LIM
2
--------------------------------------------------------------------------------
=
I
LIM
52 600
=
I
LIM
52 600
39 mA
=
=
相關(guān)PDF資料
PDF描述
L8560 Low-Power SLIC（electronic subscriber loop interface circuits ） with Ringing(帶振鈴的低功耗用戶線接口（SLIC）)
L8567 SLIC for People Republic of China Applications(用于中國(guó)的用戶線接口（SLIC）)
L8574D Resistive Subscriber Line Interface Circuit (SLIC), Ring Relay, and Protector (SRP) for Long Loop and TR-57 Applications(長(zhǎng)環(huán)路和TR-57應(yīng)用的電阻性用戶線接口，振鈴繼電器和保護(hù)器)
L8575 Dual-Resistive, Low-Cost Subscriber Line Interface Circuit (SLIC)(雙電阻、低價(jià)格用戶線接口)
L8576B Dual Ringing SLIC(雙通道振鈴用戶環(huán)路接口（SLIC）)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L8560 制造商:AGERE 制造商全稱:AGERE 功能描述:Low-Power SLIC with Ringing
L8560AAU 制造商:Alcatel-Lucent 功能描述: 制造商:LUCENT 功能描述:
L8561 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:The UTC L8561 is a Power Factor Corrector, which can work in wide input voltage range applications (from 85V ~ 265V) with an excellent THD.
L8561_11 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:POWER FACTOR CORRECTOR
L8561G-D08-T 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:POWER FACTOR CORRECTOR
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