public 1 of 8 doc. ds - 090404 v 2 . 1 www.cissoid.com the leader in high temperature semiconductor solutions cht - ldop datasheet version : 02 . 1 10 - nov - 10 (last modification date) high - temperature, 1a, low - dropout voltage regulator 2.5v , 3.3 v, 5v, 5 .5v, 9v, 10v, 12v, 13v or 15v general description the cht - ldop is a 1a, low - dropout linear voltage regulator compatible with high - temperature environments. typical oper a- tion temperature range extends from - 5 0c to 225c. the circuit is stable throughout the whole temperature range and under a large choice of capacitive loads. the minimum dropout voltage (v in - v out ) is 2v with a 1a load current at 225c and 1v for load currents lower than 400ma. the dropout voltage can span from 1 volts to 20 vol ts (1) . the circuit is a one - die solution. cht - ldop is available as die or pac k- aged devices (currently to - 3 and to - 254) on demand. related documents: ? an - 06016 : selecting correct ci s- soid regulator depending on your a p- plication ? an - 06002: voltage regulato r short - circuit protection and associated p o- tential startup problem. ? an - 090477 : power dissipation co n- siderations during short circuit cond i- tions applications power supplies for high - temperature ele c- tronic systems used in well logging, automotive, aeronautics or aerospace applications. features ? 1v to 20v dropout voltage @400ma (1) ? 2v to 20v dropout voltage @1a (1) ? max 1a output current @ 225c ? 60db input ripple rejection (0 - 100hz) ? c load from 100nf to 1000f, large esr range ? available as die or in custom package on demand. (3 - pin compatible) ? the start - up is operative over the whole temperature range ? latch - up free available voltages: ? cht - ldop - 025: 2.5 v ? cht - ldop - 033: 3.3v ? cht - ldop - 050: 5.0v ? cht - ldop - 055 : 5.5v ? cht - ldop - 090 : 9.0v ? cht - ldop - 100 : 10.0v ? cht - ldop - 120: 12.0v ? cht - ldop - 130: 13.0v ? cht - ldop - 150: 15.0v typical application c h t - l d o p c o u t g n d + v i n v o u t + 2 v v i n v o u t c i n v o u t r l o a d
10 - nov - 10 contact : gonzalo picn (+32 - 10 - 489214) nov. 10 cht - ldop datasheet (last modification date) public 2 of 8 doc. ds - 090404 - v 2 . 1 www.cissoid.com absolute maximum ratings supply voltage v in to gnd - 0. 3v to 40 v j unction t emperature (2) t j 300 c power dissipation (3) esd rating (expected) human body model < 1k v operating conditions supply voltage v in to gnd v out +( 1 v to 20 v ) (1) junction temperature - 55 c to +225c power dissipation (3) caution: stresses above those listed in absolute maximum ratings may cause permanent damage to the device. this is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this spec i- fication is not implied. frequent or extended e xpos ure to absolute maximum rating conditions or above may affect device reliability. electrical characteristics unless otherwise stated: v in = 17 v, v out =15v (cht - ldop - 150) . bold underlined values ind i- cate values over the whole temperature range ( - 55c < t j < +225c). for other nominal vol t- ages, see notes under this table. parameter condition min typ max units input voltage v in (1) - 55 c 10 - nov - 10 contact : gonzalo picn (+32 - 10 - 489214) nov. 10 cht - ldop datasheet (last modification date) public 3 of 8 doc. ds - 090404 - v 2 . 1 www.cissoid.com input capacitor and o utput load r ecommended s pecifications resistances in series with capacitors represent the internal esr of these capacitors. output capacitor recommendations: equivalent c out 220nf with low esr l arge capacitors : s mall capacitors: c b = 0 - 1000f c s = 2 20 - 1000 nf r b = 0.2 - ? ? r s =10 - 50 m ? m edium capacitors: c m = 0 - 6f r m = 0.1 - 1 ? in put capacitor recommendations: equivalent c in 220nf with low esr o perating conditions start - up conditions the start - up is operative over the whole temperature range as long as all loads are connected to ground. the start - up is not guaranteed if the positive regulator output has a current path directly connected to a negative voltage. indeed, such load cond i- tion can lead to wrong activation of the short - circuit protec tion, i.e. a bad start - up or a bad recovering after short - circuit. in this case, it is recommended to use our cht - ldos regulator family instead of cht - ldop regulator family. please refer to our application notes for more details: ? an - 06016 : selecting corre ct ci s- soid regulator depending on your a p- plication ? an - 06002: voltage regulator short - circuit protection and associated p o- tential startup problem. power dissipation considerations when determining the maximum power dissipated by the regulator, not only the dissipation during normal operation must be considered, but also the power diss i- pated during any eventual short circuit or overload. during short circuit or overload, worst case conditions are normally found for max i- mum vin and a shorting resistance i n the order of few ohms. entering into short - circuit or overload co n- ditions with high input voltages vin may lead to extreme overheating, placing the part above absolute maximum rating conditions. please refer to our application note for more detail: ? an - 090477 : power dissipation co n- siderations during short circuit cond i- tions shorting the regulator input if the input terminal is shorted to ground once the output capacitance has been charged, a large current corresponding to the discharge of the output capacitor will flow from the output to the input through the drain - body diode of the internal pass transistor. this large current may cause the permanent damage of the part. c h t - l d o p c s g n d v i n v o u t i l o a d 3 0 a r s r m c m r b c b l o a d c i n + v i n
10 - nov - 10 contact : gonzalo picn (+32 - 10 - 489214) nov. 10 cht - ldop datasheet (last modification date) public 4 of 8 doc. ds - 090404 - v 2 . 1 www.cissoid.com sinking current or r aising the output voltage above the input voltage can cause permanent damage to the part . regu lator floating ground when the ground becomes disconnected, the output voltage gets unregulated, cau s- ing possible damage to other circuits co n- nected to v out . if the ground terminal is reconnected while vin is applied , perm a- nent damage may also occur to the reg u- l a tor. if a regulator needs to be reco n- nected with the power supply on, then connect the ground terminal first. typical performance characteristics (cht - ldo p - 1 50) note: temperatures here after are ambient temper atures. figure 1: v out vs. i load @ 2v dropout figure 2: zoom on figure 1 figure 3: typical short - circuit current vs. t (4 samples, 2v dropout) figure 4: v out vs. t (2v dropout, 4 samples) figure 5: v out vs. v in over t figure 6: input ripple rejection (cout = 1 f) 0 2 4 6 8 10 12 14 16 0 0.5 1 1.5 2 i load (a) v out (v) 25 c 100 c 150 c 200 c 250 c 225 c 250 c 25 c 100 c 150 c 200 c 225 c i load (a) v out (v) 14.8 14.9 15 15.1 15.2 0 0.5 1 1.5 2 t( c) i sc (a) 0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0 50 100 150 200 250 v out (v) t( c) 14.85 14.9 14.95 15 15.05 15.1 15.15 0 50 100 150 200 250 300 v in (v) v out (v) 25 c 100 c 150 c 200 c 225 c 250 c 14.8 14.9 15 15.1 15.2 15 17 19 21 23 25 27 29 -100 -80 -60 -40 -20 0 10 100 1k 10k db (v out /v in ) f(hz) 25c 225c
10 - nov - 10 contact : gonzalo picn (+32 - 10 - 489214) nov. 10 cht - ldop datasheet (last modification date) public 5 of 8 doc. ds - 090404 - v 2 . 1 www.cissoid.com figure 7: i quiescent vs. v in over t figure 8: s vout (v2/hz) @25c, i load =100ma v in (v) i quiescent (a) 250 c 25 c 100 c 200 c 225 c 150 c 0.0037 0.0039 0.0041 0.0043 16 18 20 22 24 26 28 30 v noise_rms (10hz - 1khz)=100v 10 - 10 10 - 09 10 - 11 10 - 12 10 100 1k output noise spectral density (v2/hz) f(hz)
10 - nov - 10 contact : gonzalo picn (+32 - 10 - 489214) nov. 10 cht - ldop datasheet (last modification date) public 6 of 8 doc. ds - 090404 - v 2 . 1 www.cissoid.com figure 9: typical max load current over t vs dropout voltage p ackaging and p inout to - 3 metal can to - 254 header bottom view front view 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 - 50 0 50 100 150 200 250 imax (a) t ( c) dropout=2v dropout=1.5v dropout=1.2v dropout=1v g n d v o u t v i n ( c a s e ) v i n g n d v o u t c a s e f l o a t i n g
10 - nov - 10 contact : gonzalo picn (+32 - 10 - 489214) nov. 10 cht - ldop datasheet (last modification date) public 7 of 8 doc. ds - 090404 - v 2 . 1 www.cissoid.com ordering information ordering reference p ackage output voltage temperature range marking cht - ldop - 025 - to3 - t metal to3 2.5v - 55c to +225c cht - ldop - 025 cht - ldop - 025 - to254 - t metal to254 2.5v - 55c to +225c cht - ldop - 025 cht - ldop - 033 - to3 - t metal t o3 3.3v - 55c to +225c cht - ldop - 033 cht - ldop - 033 - to254 - t m etal to254 3.3v - 55c to +225c cht - ldop - 033 cht - ldop - 050 - to3 - t metal to3 5v - 55c to +225c cht - ldop - 050 cht - ldop - 050 - to254 - t metal to254 5v - 55c to +225c cht - ldop - 050 cht - ldop - 055 - to3 - t metal to3 5.5v - 55c to +225c cht - ldop - 055 cht - ldop - 055 - to254 - t metal to254 5.5v - 55c to +225c cht - ldop - 055 cht - ldop - 090 - to3 - t m etal to3 9v - 55c to +225c cht - ldop - 090 cht - ldop - 090 - to254 - t metal to254 9v - 55c to +225c cht - ldop - 090 cht - ldop - 100 - to3 - t metal to3 10v - 55c to +225c cht - ldop - 100 cht - ldop - 100 - to254 - t m etal to254 10v - 55c to +225c cht - ldop - 100 cht - ldop - 120 - to3 - t m etal to3 12v - 55c to +225c cht - ldop - 120 cht - ldop - 120 - to254 - t m etal to254 12v - 55c to +225c cht - ldop - 120 cht - ldop - 130 - to3 - t m etal to3 13v - 55c to +225c cht - ldop - 130 cht - ldop - 130 - to254 - t metal to254 13v - 55c to +225c cht - ldop - 130 cht - ldop - 150 - to3 - t metal to3 15v - 55c to +225c cht - ldop - 150 cht - ldop - 150 - to254 - t m etal to254 15v - 55c to +225c cht - ldop - 150 package dimensions to3 (mm +/ - 10% ) 3 8 . 9 ? 1 9 . 5 0 ? 2 3 . 1 0 ? 2 5 . 5 0 ? 4 . 0 0 ? 4 . 0 0 4 . 0 0 * 2 1 9 . 5 0 5 5 . 9 1 1 2 . 0 0 1 6 . 9 0 - 1 7 . 0 5 3 0 . 1 5 1 0 . 8 5 ? 1 . 0 0
10 - nov - 10 contact : gonzalo picn (+32 - 10 - 489214) nov. 10 cht - ldop datasheet (last modification date) public 8 of 8 doc. ds - 090404 - v 2 . 1 www.cissoid.com t0254 (+/ - 10%) contact & ordering cissoid s.a. headquarters and contact emea: cissoid s.a. C rue francqui, 3 C 1435 mont saint guibert - belgium t : +32 10 48 92 10 - f: +32 10 88 98 75 email: sales@cissoid.com sales representatives: visit our website: http://www.cissoid.com disclaimer neither cissoid, nor any of its directors, employees or affiliates make any representations or extend any warranties of any kind, either express or implied, including but not limited to warranties of merchantability, fitness for a particular purpose, and the absence of latent or other defects, whether or not discoverable. in no event shall cissoid, its d i- rectors, employees and affiliates be liable for direct, indirect, special, incidental or consequential damages of any kind arising out of the use of its circuits and their documentation, even if they have been advised of the possibility of such a damage. the circuits are pr ovided as is. cissoid has no obligation to provide maintenance, support, updates, or modifications. 1 7 . 1 5 2 0 . 1 9 1 3 . 7 2 1 3 . 7 2 ? 3 . 5 5 1 . 1 4 3 . 8 1 2 5 . 4 0 6 . 3 2 ? 1 . 0 2 3 . 8 1
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