TISP8201MDR-S Bourns Inc., TISP8201MDR-S Datasheet - Page 6

• Manufacturer Part Number: TISP8201MDR-S
• Description: Sidacs PROTECTOR - BUFFERED N-GATE PROG. PROT.
• Manufacturer: Bourns Inc.

Specifications of TISP8201MDR-S

• Breakover Current Ibo Max: 11 A
• Rated Repetitive Off-state Voltage Vdrm: 120 V
• Off-state Leakage Current @ Vdrm Idrm: 0.005 mA
• Mounting Style: SMD/SMT
• Package / Case: SOIC-8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 3 shows a typical powering arrangement for a multi-supply rail SLIC. V BATR is a positive supply and V BATL and V BATH are negative
supplies. V BATH is more negative than V BATL . With the positive and negative supply switches S2 and S1 in the positions shown, the line
driver amplifiers are powered between 0 V and V BATL . This mode minimizes the power consumption for short loop transmission. For long
loops, the driver voltage is increased by operating S1 to connect V BATH . To generate ringing, S2 is operated to apply V BATR , powering the
drivers from a total supply voltage of V BATR - V BATH . These conditions are shown in Figure 4.
Conventional ringing is typically unbalanced ground or battery backed. To minimize the supply voltage required, most multi-rail SLICs use
balanced ringing as shown in Figure 4. The ringing has d.c., V DCRING , and a.c., V PKRING , components. A 70 V rms a.c. ring signal has a
peak value, V PKRING , of 99 V. If the d.c. component was 20 V, then the total voltage swing needed would be 99 + 20 = 119 V. There are
internal losses in the SLIC from the positive supply, V SLICR , and the negative supply, V SLICH . The sum of these two losses generally amounts
to a total of 10 V. This makes a total supply rail value of 119 + 10 = 129 V. In practice, the voltage might be distributed as V BATR = +60 V and
V BATH = -70 V. These values are nominal and some extra voltage should be provided to cover power supply voltage tolerance.
MAY 1998 - REVISED JANUARY 2007
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
Operation of SLICs using Positive and Negative Voltage Supply Rails
TISP8200M & TISP8201M
SHORT LOOP
V
0 V
BATL
LONG LOOP
Figure 3. SLIC with Voltage Supply Switching
LINE
Figure 4. Driver Supply Voltage Levels
APPLICATIONS INFORMATION
DRIVERS
LINE
0 V
V
BATH
SLIC
V
SWITCHES
DCRING
SUPPLY
S2
S1
V
V
PKRING
PKRING
AI8XAF
0 V
V
V
V
BATR
BATL
BATH
/2
/2
RINGING
V
V
SLICH
SLICR
V
V
PKRING
PKRING
/2
/2
V
AI8XAG
BATR
-
V
V
BATH
V
BATR
BATH