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Partno	Mfg	Dc	Qty	Available	Descript
TPP25011RL	ST,ST	N/a	2500	avai	OVERVOLTAGE AND OVERCURRENT PROTECTION FOR TELECOM LINE

TPP25011RL ,OVERVOLTAGE AND OVERCURRENT PROTECTION FOR TELECOM LINEFEATURESn UNIDIRECTIONAL FUNCTIONn PROGRAMMABLE BREAKDOWN VOLTAGEUP TO 250 Vn PROGRAMMABLE CURRENT ..
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TPP25011RL
OVERVOLTAGE AND OVERCURRENT PROTECTION FOR TELECOM LINE
1/7
TPP25011 UNIDIRECTIONAL FUNCTION PROGRAMMABLE BREAKDOWN VOLTAGETO 250V PROGRAMMABLE CURRENT LIMITATION
FROM40mATO 500mA SURGE CURRENT CAPABILITY
IPP= 30A 10/1000μs
FEATURES
Dedicatedto sensitive telecom equipment protec-
tion,this device can provide both voltage and cur-
rent triggered protection witha very tight tolerance.
The breakdown voltagecanbe easily programmed usingan external zener diode. multiple protection mode canbe also performed
when using several zener diodes, providingto
eachline interfacean optimized protection level.
The current limiting functionis achieved withthe
useofa resistor betweenthe gate andthe cath-
ode. The valueofthe resistorwill determinethe
levelofthe desired current.
DESCRIPTION
SCHEMATIC DIAGRAM
OVERVOLTAGE and OVERCURRENT
PROTECTION for TELECOM LINE
October 2003-Ed:5
Application Specific Discretes
A.S.D.™
TM:ASDis trademarksof STMicroelectronics.
CCITT K17: 10/700 μs 1.5kV
5/310 μs38A
VDE 0433: 10/700 μs2kV
5/310 μs 40A(*)
CNET: 0.5/700 μs 1.5kV
0.2/310 μs38A
FCC part68: 2/10 μs 2.5kV
2/10 μs 75A(*)
BELLCORE
TR-NWT-000974: 10/1000 μs1 kV
10/1000μs 30A(*)
(*)with series resistorsor PTC.
COMPLIES WITH THE FOLLOWING STANDARDS:
TPP25011
2/7
THERMAL RESISTANCES
ABSOLUTE MAXIMUM RATINGS (Tamb =25°C)
Note1: Pulse waveform:
10/1000μstr =10μstp =1000μs
5/310μstr =5μstp =310μs
2/10μstr =2μstp =10μs
100 tr p t
TPP25011
3/7
ELECTRICAL CHARACTERISTICS (Tamb= 25°C)
Note1: Seethe referencetest circuit1.
Note2: Seetest circuit2.
Note3: VR=5V,F= 1MHz- OPERATION WITHOUT GATE- OPERATION WITH GATE
TPP25011
4/7
REFERENCE TEST CIRCUIT1:
FUNCTIONAL HOLDING CURRENT(IH) TEST CIRCUIT2=GO- NOGO TEST
TPP25011
5/7
APPLICATION CIRCUIT
Overvoltage protection and current limitation
Table below givesthe toleranceofthe limited currentITfor each standardized resistor value.
TPP25011
6/7
Telephoneset protection
OFF HOOK= Ringer circuit protectionis insured with intrinsic breakdown voltageat 250V HOOK=In dialing mode andin conversation mode,the breakdown voltageof TPP250canbe adapted different levels with zener diodes.
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