PEB3265 Infineon Technologies Corporation, PEB3265 Datasheet - Page 42

• Manufacturer Part Number: PEB3265
• Description: (PEB326x / PEB426x) Dual Channel Slicofi-2 / Slic Duslic
• Manufacturer: Infineon Technologies Corporation

Preliminary
3.3.2
In the off-hook state, the feed current must usually be kept at a constant value
independent of load (see
information to SLICOFI-2x via the IT pin (input pin for DC control). SLICOFI-2x
compares the actual current with the programmed value and adjusts the SLIC drivers as
necessary.
to 50 mA depending on the used SLIC version.
Figure 15
Depending on the load, the operating point is determined by the voltage
between the Tip and Ring pins.
The operating point is calculated from:
V
where
R
R
The lower the load resistance
pins. A typical value for the programmable feeding resistance in the constant current
zone is about
Data Sheet
TIP/RING
LOAD
PRE
=
=
R
R
PROT
=
PRE
Constant Current Zone
I
R
I
TIP/RING
I
TIP/RING
LOAD
0
R
Constant Current Zone
+
+
I
= 10 k
R
R
LINE
STAB
R
in the constant current zone is programmable from 0 to 32 mA or 0
I
TIP/RING
I
+
(see
R
Figure
(see
PHONE,OFF-HOOK
Figure 99
Table
R
LOAD
15). The SLIC senses the DC current and supplies this
R
5).
, the lower the voltage between the Tip and Ring
LOAD
on
42
Page
R
370).
K12
V
RES
|V
BAT
Functional Description
|
V
TIP/RING
ezm14016.emf
2000-07-14
V
DuSLIC
TIP/RING