1/7 TPP25011 ? n unidirectional function n programmable breakdown voltage up to 250 v n programmable current limitation from 40 ma to 500 ma n surge current capability i pp = 30a 10/1000 m s features so-8 dedicated to sensitive telecom equipment protec- tion, this device can provide both voltage and cur- rent triggered protection with a very tight tolerance. the breakdown voltage can be easily programmed by using an external zener diode. a multiple protection mode can be also performed when using several zener diodes, providing to each line interface an optimized protection level. the current limiting function is achieved with the use of a resistor between the gate and the cath- ode. the value of the resistor will determine the level of the desired current. description schematic diagram overvoltage and overcurrent protection for telecom line october 2003 - ed: 5 application specific discretes a.s.d.? tm: asd is trademarks of stmicroelectronics. ccitt k17 : 10/700 m s 1.5 kv 5/310 m s38a vde 0433 : 10/700 m s2kv 5/310 m s 40 a (*) cnet : 0.5/700 m s 1.5 kv 0.2/310 m s38a fcc part 68 : 2/10 m s 2.5 kv 2/10 m s 75 a (*) bellcore tr-nwt-000974 : 10/1000 m s1kv 10/1000 m s 30 a (*) (*) with series resistors or ptc. complies with the following standards :
TPP25011 2/7 symbol parameter value unit r th (j-a) junction to ambient 170 c/w thermal resistances symbol parameter value unit i pp peak pulse current (see note 1) 10/1000 m s 5/310 m s 2/10 m s 30 40 75 a i tsm non repetitive surge peak on-state current (f = 50hz) t p = 10ms t=1s 5 3.5 a t stg t j storage temperature range maximum junction temperature -55to+150 150 c absolute maximum ratings (t amb =25c) note 1 : pulse waveform : 10/1000 m st r =10 m st p =1000 m s 5/310 m st r =5 m st p =310 m s 2/10 m st r =2 m st p =10 m s 100 50 %i pp t t r p 0 t
TPP25011 3/7 symbol parameter v rm stand-off voltage i rm leakage current at stand-off voltage v br breakdown voltage v bo breakover voltage i h holding current i bo breakover current i pp peak pulse current v gn gate voltage i g gate triggering current c capacitance electrical characteristics (t amb = 25c) note 1: see the reference test circuit 1. note 2 : see test circuit 2. note 3: v r = 5v, f = 1mhz type i rm @v rm v br @i r v bo @i bo i h c max. min. max. min. note1 max. min. note 2 max. note 3 m a v vmavmamamapf TPP25011 6 60 250 1 340 15 200 180 100 1 - operation without gate type v gn @i gn =30ma i g min. max. min. max. note 4 v a-c = 100 v v vmama TPP25011 1.05 1.35 5 40 2 - operation with gate
TPP25011 4/7 reference test circuit 1 : functional holding current (i h ) test circui t2=go- nogo test 220v static relay. r1 r2 240 140 d.u.t v bo measure i bo measure tp =20ms k transformer 220v/800v 5a auto transformer 220v/2a v out r -v p v bat =-48v surge generator d.u.t. test procedure : n pulse test duration (tp = 20ms): - for bidirectional devices = switch k is closed - for unidirectional devices = switch k is open. n v out selection - device with v bo < 200 volt -v out = 250 v rms ,r 1 = 140 w . - device with v bo ? 200 volt -v out = 480 v rms ,r 2 = 240 w . this is a go-nogo test which allows to confirm the holding current (i h ) level in a functional test circuit. test procedure : n 1) adjust the current level at the i h value by short circuiting the ak of the d.u.t. 2) fire the d.u.t with a surge current : ipp = 10a , 10/1000 m s. 3) the d.u.t will come back off-state within 50 ms max.
TPP25011 5/7 TPP250 application circuit overvoltage protection and current limitation current tolerance r w ( 5%) i t ma min i t ma max 3.00 3.30 3.60 3.90 4.30 4.70 5.10 5.60 6.20 6.80 7.50 8.20 9.10 10.10 11.00 12.00 13.00 15.00 16.00 18.00 20.00 22.00 24.00 27.00 30.00 338 308 283 261 238 218 201 184 166 152 138 127 115 104 96 88 82 72 68 61 55 50 47 42 38 514 471 435 404 370 342 319 294 269 249 229 213 196 181 169 158 149 135 129 119 111 105 99 93 87 load line -+ table below gives the tolerance of the limited current it for each standardized resistor value.
TPP25011 6/7 telephone set protection protection modes : off hook = ringer circuit protection is insured with intrinsic breakdown voltage at 250 v on hook = in dialing mode and in conversation mode, the breakdown voltage of TPP250 can be adapted at different levels with zener diodes. order code TPP 250 1 1 rl telecom programmable protection breakdown voltage version package: 1 = so-8 plastic packaging: rl = tape & reel = tube
TPP25011 7/7 packaging : products supplied antistatic tubes or tape and reel. weight : 0.08g information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifications mentioned in this publication are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics products are not au- thorized for use as critical components in life support devices or systems without express written approval of stmicroelectronics. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners. ? 2003 stmicroelectronics - all rights reserved. stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - italy - japan - malaysia - malta - morocco - singapore - spain - sweden - switzerland - united kingdom - united states www.st.com package mechanical data so-8 plastic ref. dimensions millimetres inches min. typ. max. min. typ. max. a 1.75 0.069 a1 0.1 0.25 0.004 0.010 a2 1.65 0.065 b 0.35 0.48 0.014 0.019 b1 0.19 0.25 0.007 0.010 c 0.50 0.020 c1 45 (typ) d 4.8 5.0 0.189 0.197 e 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 3.81 0.150 f 3.8 4.0 0.15 0.157 l 0.4 1.27 0.016 0.050 m 0.6 0.024 s 8 (max) package type marking so-8 TPP25011 TPP250 marking
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