CLP200M STMicroelectronics, CLP200M Datasheet - Page 6

• Manufacturer Part Number: CLP200M
• Description: IC OVP/OCP TELECOM POWERSO-10
• Manufacturer: STMicroelectronics

Specifications of CLP200M

• Voltage - Working: 200V
• Technology: Mixed Technology
• Number Of Circuits: 2
• Applications: Telecommunications
• Package / Case: PowerSO-10 Exposed Bottom Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -
• Voltage - Clamping: -

CLP200M
Fig. 5b : Method to adjust the reference voltage.
2.4 Speech mode
Fig. 6 : Switching by current during speech mode.
In speech mode (Ring relay in position 1), the pro-
tection is provided by the combination of both
CLP200M and the external voltage reference de-
vice.
In normal conditions, the working point of this cir-
cuit is located in region 4 of A2 curve : the
CLP200M is idle.
When a surge occurs on the line, the external volt-
age reference device clamps at GND or -V
spectively for positive and negative surges.
This generates a current which is detected by
R
short-circuited to GND.
6/21
SENSE
TIP
external reference supplies, V
Fuse
and causes the protection to act : the line is
TIP
RING
FS
I
LG
SW3 SW1
Fuse
Fuse
FS
TIPL
OR
R sense
Overcurrent
detector
SW3 SW1
SW4 SW2
Overvoltage
detector
TIPL
RINGL
TIPS
b1
OR
OR
R sense
and V
R sense
Overcurrent
Overcurrent
Overvoltage
(+/- 215 V)
reference
detector
detector
b2
GND
Overvoltage
Overvoltage
(see fig.5b)..
detector
detector
bat
V
LG
TIPS
RINGS
re-
Rp
Overvoltage
Overvoltage
(+/- 215 V)
(+/- 215 V)
reference
reference
1
2
The operating point moves to region 5 for positive
surges or region 6 for negative surges.
Once the surge current falls below the switch-
ing-off current I
initial state (region 4).
Furthermore, the CLP200M switches when an
overvoltage, either positive or negative, occurs ei-
ther :
simultaneously on both TIP and RING lines ver-
sus GND.
between TIP and RING.
on TIP (or RING) versus GND.
reference
GND
External
voltage
-Vbat
SWOFF
, the CLP200M returns to its
-V
REF2
6
4
Rp
Rp
I
LG
VB1
VB2
5
V
REF1
1
2
1
2
A2
V
LG