TC03A-200TC 查看數據表（PDF） - Semtech Corporation
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TC03A-200TC Datasheet PDF : 8 Pages
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PROTECTION PRODUCTS
Applications Information (continued)
Protecting One SLIC Line Pair
The TC03A-200 battery tracking TransClamp is specifi-
cally designed to protect subscriber line interface
circuits (SLICs). The protection voltage of the device is
referenced to the system’s DC battery voltage. There-
fore, the protection voltage will be essentially the same
as the SLIC supply voltage, minimizing the stress on
the protected device. The TC03A-200 may be refer-
enced to battery voltages ranging from -5V to -100V.
Pin 1 is connected to the line (A-lead or B-lead). The
battery feed voltage source is connected to the gate of
the internal SCR at pin 3. Pin 2 is connected to
ground. A 0.1µF capacitor is recommended between
the gate & ground to speed up the triggering of the
device.
Protecting Multiple SLIC Lines
The TC03A-200 may be used in conjunction with
steering diodes to protect up to two SLIC Tip & Ring
line pairs. The steering diodes shunt positive surges to
ground. In this configuration, each line pair may be
surged to 100A (tp=10/100µs) independantly, or all
four pairs may be surged simultaneously up to 50A
(tp=10/100µs). This provides the designer with a
flexible, cost effective solution and increased reliability
over low current protection schemes.
Typical Applications
TCO3A-200
PPRREELLIIMINARY
TC03 Connection Diagram
1
LINE
2
GND
3
GATE
2000 Semtech Corp.
TC03A-200
TC03A-200
Protecting SLIC with Integrated Ring Generator
5
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