stlc3075 STMicroelectronics, stlc3075 Datasheet - Page 17

• Manufacturer Part Number: stlc3075
• Description: Integrated Pots Interface For Home Access Gateway And Wll
• Manufacturer: STMicroelectronics

STLC3075
Table 8.
1. CV
2. For low ripple application use 2x47m F in parallel.
3. Can be saved if proper PCB layout avoid noise coupling on RD pin (high impedance input).
4. Coilcraft type FA2469-AL, Flyback transformer 4W, 1:16 with a V
5. Coilcraft type FA2470-AL, Flyback transformer 4W, 1:8 with a V
6. RF1 sets the self generated battery voltage in RING and ACTIVE(Il=0) mode as as shown in
Name
specified. Also check
specified. Also check
V
providing that the V
requested by the particular ringer load configuration.
RF1
RF2
T1
BATR
POS
should be defined considering the ring peak level required (Vringpeak=V
should be defined depending on the power supply current capability and maximum allowable ripple.
DC/DC converter transformer
Negative battery
programming level
Negative battery
programming level
External components for flyback configuration
Table 9.
Table 10.
Inductance
Leakage inductance
DC resistance
DC resistance
Turns ratio
HI POT
Inductance
Leakage inductance
DC resistance
DC resistance
Turns ratio
HI POT
POS
Test description
Test description
Function
Table 9
Table 10
power supply current capability and the R
Coilcraft type FA2469-AL electrical specifications
Coilcraft type FA2470-AL electrical specifications
for further electrical specifications
for further electrical specifications
Flyback transformer 4W, turns ratio
1:8 for V
12V
250K <RF1<300K
0.0205
0.0205
Limit
0.414
0.036
16.50
1.500
Limit
0.036
1.500
16:1
0.40
7.92
8:1
POS
range from 8.5V to
Formula
POS
POS
SENSE
Unit
ohm
ohm
VAC
Unit
ohm
ohm
VAC
mH
mH
uH
uH
range from 8.5V to 12V @ +20°C unless otherwise
(6)
-
-
range from 4.5V to 8.5V @ +20°C unless otherwise
programming allow to source all the current
+/-3.3%
+/-4%
BATR
Max
Max
Max
Max
Max
Max
Max
Max
Tol
Tol
-6V typ.). This relation is valid
1-3, 10KHz, 100mVmrs
1-3, 100KHz, 100mVmrs
Short pins 4,6
1-3
4-6
(4-6):(1-3), 10KHz, 100mVAC
VDC to be applied for 1 second
from pins 1,3 to pins 4,6.
500 A max leakage current
1-3, 10KHz, 100mVmrs
1-3, 100KHz, 100mVmrs
Short pins 4,6
1-3
4-6
(4-6):(1-3), 10KHz, 100mVAC
VDC to be applied for 1 second
from pins 1,3 to pins 4,6.
500 A max leakage current
300k 1% @ V
Tyco COEV MAGNETICS
or Coilcraft FA2470-AL
Table 7
Functional description
MGPWG-00008
Typ. value
.
9.1k 1%
Notes
Notes
BATR
= -70V
(5)
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