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STLC3085 数据表(PDF) 18 Page - STMicroelectronics

部件名 STLC3085
功能描述  Integrated Pots Interface for Home Access Gateway and WLL
PDF  28 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STLC3085 数据表(HTML) 18 Page - STMicroelectronics

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Functional description
STLC3085
18/28
Name
Function
Formula
Typ. Value
CSVR
Negative Battery Filter
CSVR = 1/(2
π ⋅ fp ⋅ 1.8MΩ)
fp = 50Hz
1.5nF 10%
100V
RD
Ring Trip threshold setting
resistor
RD = 100/IRTH
2K
Ω < RD < 5KΩ
4.12k
Ω 1%
@ IRTH = 24mA
CAC
AC/DC split capacitance
22
µF 20% 15V
@ RD = 4.12k
Ω
RP
Line protection resistor
Rp > 30
Ω
50
Ω 1%
RLIM
Current limiting programming
RLIM = 1300/Ilim
52.3k
Ω < RLIM < 65kΩ
52.3k
Ω 1%
@ Ilim = 25mA
RTH
Off-hook threshold programming
(ACTIVE mode)
RTH = 290/ITH
27k
Ω < RTH < 52kΩ
32.4k
Ω 1%
@ITH = 9mA
CREV
Reverse polarity transition time
programming
CREV = ((1/3750) ·
∆T/∆V
TR)
22nF 10% 10V
@ 12V/ms
RDD
Pull up resistors
100k
Ω
CVCC
Internally supply filter capacitor
100nF 20% 10V
CVpos(1)
Positive supply filter capacitor
with low impedance for switch
mode power supply
100
µF
CV(2)
Battery supply filter capacitor
with low impedance for switch
mode power supply
100
µF 20% 100V
CVB
High frequency noise filter
470nF 20% 100V
CRD(3)
High frequency noise filter
100nF 10% 15V
CZ
Fly-Back compensation
capacitor
2.2nF, 20%
CSF
Sense Filter capacitor
120pF, 20%
RSF
Sense Filter resistor
1k
Ω
RSENSE
DC/DC converter peak current
limiting
RSENSE = 375mV/IPK
220m
Ω @I
PK = 1.7A
Q1
DC/DC converter switch Nchan
MOS transistor
RDS(ON)
≤0.05Ω,VDSS = 30V
VDG=30V, ID = 6.5A
Low threshold drive
STN4NF03L
or equivalent
D1
DC/DC converter series diode
Vr > 350V, tRR ≤ 80ns
SMBYTW01-400
or equivalent
T1
DC/DC Converter transformer
Fly-Back transformer 4W, Turns
Ratio 1:16 fro VPOS range from
4.5V to 8.5V
Tyco COEV MAGNETICS
MGPWG-00007
Name
Function
Formula
Typ. Value
Table 10.
External Components (continued)



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