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IC-DXC digital sensor i/o driver rev a0.8, page 1/ 11 features ? con?gurable high-side, low-side and push-pull operation ? 200 ma output current ? i/o-link complaint ? 5 s input ?lter for spike suppression ? reverse polarity protection ? current limited output (< 450 ma) ? wide supply voltage range from 8 to 30 v ? driver shut-down with over temperature ? integrated free-wheeling diode for inductive loads ? sensor supply voltage output of 5 v at 10 ma applications ? digital sensors ? light barriers ? proximity switches packages dfn8 3x3 block diagram copyright ? 2011 ic-haus http://www.ichaus.com p r e l i m i n a r y p r e l i m i n a r y h i g h s i d e s w i t c h d i g i t a l i n p u t v r e f r e g & < 1 5 0 c & c v b 1 f c v o u t 1 0 0 n f . . i c - d x c f i l t 3 6 v l o w s i d e s w i t c h 3 6 v = 1 + + + - + - o u t 5 v n i n v b g n d v o u t o e v b . . 3 0 v v r l v r h c f o m o n g n d = 1
IC-DXC digital sensor i/o driver rev a0.8, page 2/ 11 description the IC-DXC is a simple i/o circuit capable of driving ohmic, inductive and capacitive loads and features integrated reverse polarity protection. the output current is at least 200 ma from a supply voltage of 8 to 30 v. with input oe = high the output works as a push-pull driver controlled by pin nin. if pin nin is set either to low or high, the output acts as a high-side (pnp) or low-side (npn) driver respectively, controlled by the input oe. forcing the output pin out from his current state is signaled at pin mon. this can be used to implement an io-link wake-up detection. output transitions are slew-rate limited to reduce in- terference. the output is current limited to 450 ma and short cir- cuit proof by shutting down the driver with excessive temperature. a regulated 5 v low power supply is available at pin vout to supply external circuitry with up to 10 ma. packages dfn8 3x3 pin configuration pin functions no. name function 1 vout regulated +5 v voltage 2 mon monitor output 3 gnd ground 4 nin input 5 oe output enabled 6 cfo feedback channel output 7 out driver output 8 vb supply voltage p r e l i m i n a r y p r e l i m i n a r y 1 2 3 4 5 6 7 8 backside pad/shield (bp)
IC-DXC digital sensor i/o driver rev a0.8, page 3/ 11 package dimensions all dimensions in mm. p r e l i m i n a r y p r e l i m i n a r y 3 3 top 0.90 side 2.38 1.65 0.30 0.65 0.40 bottom 1.65 2.95 0.35 0.65 2.40 r 0.175 0.70 recommended pcb-footprint dra_dfn8-1_pack_1, 15:1
IC-DXC digital sensor i/o driver rev a0.8, page 4/ 11 absolute maximum ratings beyond these values damage may occur; device operation is not guaranteed. absolute maximum ratings are no operating conditions! integrated circuits with system interfaces, e.g. via cable accessible pins (i/o pins, line drivers) are per principle endangered by injected interferences, which may compromise the function or durability. the robustness of the devices has to be veri?ed by the user during system development with regards to applying standards and ensured where necessary by additional protective circuitry. by the manufacturer suggested protective circuitry is for information only and given without responsibility and has to be veri?ed within the actual system with respect to actual interferences. item symbol parameter conditions unit no. min. max. g001 vb supply voltage referenced to lowest voltage of gnd, out 36 v referenced to highest voltage of gnd, out -36 v g002 out out voltage referenced to lowest voltage of vb, gnd 36 v referenced to highest voltage of vb, gnd -36 v g003 gnd gnd voltage referenced to lowest voltage of vb, out 36 v referenced to highest voltage of vb, out -36 v g004 es() maximum surge energy as indication for external protection design single pulse test between each pins of vb, out or gnd. pulse magnitude less than 55 v, duration less than 100 s 6.5 mj g005 vd() esd susceptibility at all pins hbm, 100 pf discharged through 1.5 k
2 kv g006 tj junction temperature -40 150 c g007 ts storage temperature -40 150 c thermal data operating conditions: vb = 8..30 v item symbol parameter conditions unit no. min. typ. max. t01 ta operating ambient temperature range no thermal shutdown -40 +150 c all voltages are referenced to ground unless otherwise stated. all currents ?owing into the device pins are positive; all currents ?owing out of the device pins are negative. p r e l i m i n a r y p r e l i m i n a r y
IC-DXC digital sensor i/o driver rev a0.8, page 5/ 11 electrical characteristics operating conditions: vb = 8...30 v, tj = -40...150 c, unless otherwise stated item symbol parameter conditions unit no. min. typ. max. total device 001 vc()lo clamp voltage lo at nin, oe, vout i() = -1 ma -1.4 v 002 vb permissible supply voltage referenced to gnd 8 24 30 v 003 i(vb) supply current in vb no load, nin = hi, oe = lo 1.2 ma nin = hi, oe = hi 1.4 ma nin = lo, oe = hi 1.6 ma 004 v(vb)on turn-on threshold increasing vb 6 8 v 005 ilk(gnd)rp reverse polarity leakage current v(vb) = 0; v(out) = 0; v(gnd)= 0...30 v 300 ua 006 ilk(out)rp reverse polarity leakage cur- rent v(vb)=0;v(gnd)=0; v(out)= 0...30 v 300 ua 007 ilk(vb)rp reverse polarity leakage cur- rent v(out) =0 ; gnd open; ; v(vb)= 0...30 v 300 ua output characteristics 101 vs(out)lo saturation voltage low-side driver nin = hi, oe = hi i(out) = 100 ma 1.5 v i(out) = 200 ma 2.1 v 102 vs(out)hi saturation voltage high-side driver nin = lo, oe = hi i(out) = -100 ma -1.5 v i(out) = -200 ma -2.1 v 103 isc()lo short-circuit current lo in out v(out) = 3...vb 200 450 ma 104 isc()hi short-circuit current hi in out v() = 0...vb 3 v -450 -200 ma 105 llk() leakage current at out output disabled v(out) = -6...0 v -100 0 a v(out) = 0...vb -40 40 a v(out) > vb...30 v 0 100 a 106 sr() slew rate (switch off ! on, switch on ! off ) vb = 30 v, cl = 2.2 nf, i(out) = 0 40 v/s 107 vfw(out)lo freewheeling voltage i(out) = -1 ma, with reference to vb -47 -36 v 108 vfw(out)hi freewheeling voltage i(out) = 1 ma, with reference to gnd 36 47 v temperature monitor 201 toff over-temperature shutdown increasing tj 150 180 c inputs oe, nin 301 vt()hi input threshold voltage hi at nin, oe 2 v 302 vt()lo input threshold voltage lo at nin, oe 0.8 v 303 vt()hys hysteresis at nin, oe vt()hys = vt()hi vt()lo 200 mv 304 ipd() pull-down current at nin, oe v() > 0.4 v 2 150 a 305 tpio propagation delay nin, oe ! out 2.1 6.5 s 306 tsup() permissible spurious pulse width at nin, oe 1.6 s 307 ttrig() required pulse width at nin, oe 4 s reg series regulator 401 v(vout) regulated output voltage vb = 9...30 v, i(vout) = 10...0 ma 4.7 5.3 v vb = 8...9 v, i(vout) = 10...0 ma 4.5 5.3 v 402 c(vout) capacitor at vout i(vout) = 0 0 10 f i(vout) > 0 0.1 10 f 403 isc(vout) short circuit current at vout vout connected to gnd -125 ma p r e l i m i n a r y p r e l i m i n a r y
IC-DXC digital sensor i/o driver rev a0.8, page 6/ 11 electrical characteristics operating conditions: vb = 8...30 v, tj = -40...150 c, unless otherwise stated item symbol parameter conditions unit no. min. typ. max. feedback channel 501 vt1(out)hi input threshold 1 hi at out vb < 18 v 59 66 74 %vbr 502 vt1(out)lo input threshold 1 lo at out vb < 18 v 44 50 56 %vbr 503 vt2(out)hi input threshold 2 hi at out vb > 18 v 10 11.3 12.5 v 504 vt2(out)lo input threshold 2 lo at out vb > 18 v 8.3 9 10.5 v 505 vt()hys hysteresis vt(out)hys = vt(out)hi vt(out)lo 1 v 506 tpcf propagation delay out ! cfo v(cfo) = 10 $ 90% 1 5 s 507 vs()lo saturation voltage lo at cfo/mon i(cfo/mon) = 1.0 ma 0.4 v 508 isc()lo short circuit current lo in cfo/mon v(cfo/mon) = 0.4 v...vout 1 50 ma 509 ilk() leakage current at cfo open collector mode, v(cfo) = 0 v...vout, cfo = off -10 10 a 510 tdre propagation delay out ! mon short-circuit 5.5 14 us p r e l i m i n a r y p r e l i m i n a r y
IC-DXC digital sensor i/o driver rev a0.8, page 7/ 11 description of functions IC-DXC is a current limited switching channel which enables digital sensors to drive peripheral elements. they are designed to cope with high driver currents. the switches are reverse-polarity protected, feature a free-wheeling circuit for inductive loads, and a current limited output. reverse polarity protection the pins vb, out an gnd on the line side of the chip are reverse polarity protected. as far as the maximum voltage ratings are not exceeded, no possible supply combination at the line side pins can damage the chip. figure 1: out characteristic when low side active figure 2: out characteristic when high side active output characteristics of out the switching channel is current limited to a value be- tween 150ma and 450ma. (cf. electrical characteris- tics nos. 103, 104). the current limitation works only for voltages higher than 3 v at out resp. lower than vbo 3 v. for smaller output voltages the current lim- itation is reduced in order to minimize the saturation voltages without increasing the power dissipation. fig- ures 1 and 2 show the characteristic of the switching channels when activated. region "a" is the saturation range, where the current limitation is not fully active yet and region "b" is the current limited range. region "c" corresponds to the free-wheeling circuit activated. the switching channel is designed so that the low side can only sink current and high side can only source current (no reverse current). free-wheeling circuit for inductive loads the free-wheeling circuit is always present and does not depend on the current output status. it is acti- vated by voltages higher than 36 v at out referenced to gnd or lower than -36 v at out referenced to vb. in that case the correspondent channel will switch on without current limitation (see figure 3 ). figure 3: free-wheeling characteristic p r e l i m i n a r y p r e l i m i n a r y i s c ( ) l o 3 6 v a b v ( o u t ) i ( o u t ) 3 v g n d c v b b c v b - 3 6 v 3 6 v a v b g n d i ( o u t ) i s c ( ) h i v ( o u t ) v b v b - 3 6 v 3 6 v i ( o u t ) 3 6 v v ( o u t ) g n d g n d + 3 6 v
IC-DXC digital sensor i/o driver rev a0.8, page 8/ 11 operating modes the IC-DXC can be operated in high-side (pnp), low- side (npn) and push-pull (pp) switch mode. figure 4 shows the high-side operation where nin pin must be kept low and the oe pin controls the switch. figure 5 shows the low-side operation where nin pin must be kept high and the oe pin controls the switch. figure 6 shows the push-pull operation where oe pin must be kept high and the nin pin controls the switch. if the out signal differs from what declared in tables 4 , 5 and 6 (due to external forcing) for more than 14 s (cf. electrical characteristics no. 510), this event will be signalled by a low level at mon output. in case of a short circuit at out and resulting temperature shut- down, logic level of mon will be unde?ned. figure 4: con?guration as high-side (pnp-switch) output table. high-side mode (pnp-switch) oe nin out cfo mode l l z (l) h high-side, passive pull down h l h l high-side, active pull up table 4: output function table fig. 4 . high-side mode (pnp-switch) with external pull-down. figure 5: con?guration as low-side (npn-switch) output table. low-side mode (npn-switch) oe nin out cfo mode l h z (h) l low-side, passive pull up h h l h low-side, active pull down table 5: output function table fig. 5 . low-side mode (npn-switch) with external pull-up. figure 6: con?guration as pushpull output table. push-pull mode oe nin out cfo mode h h l h push-pull, active pull down h l h l push-pull, active pull up table 6: output function table fig. 6 . push-pull mode p r e l i m i n a r y p r e l i m i n a r y r l o a d 1 0 0 n f . . i c - d x c f i l t 3 6 v l o w s i d e s w i t c h 3 6 v h i g h s i d e s w i t c h d i g i t a l i n p u t v r e f r e g & < 1 5 0 c & c v b 1 f c v o u t + - = 1 + + + - o u t 5 v n i n g n d v b g n d v o u t o e v b . . 3 0 v v r l v r h c f o m o n c h e n g n d v o u t v o u t o u t = 1 h i g h s i d e s w i t c h d i g i t a l i n p u t v r e f r e g & < 1 5 0 c & c v b 1 f i c - d x c f i l t c v o u t 1 0 0 n f . . r l o a d 3 6 v l o w s i d e s w i t c h 3 6 v = 1 + + + - + - o u t 5 v n i n g n d v b g n d v o u t o e v r l v r h c f o m o n c h e n v o u t v b . . 3 0 v o u t v o u t = 1 h i g h s i d e s w i t c h d i g i t a l i n p u t v r e f r e g & < 1 5 0 c & c v b 1 f i c - d x c f i l t c v o u t 1 0 0 n f . . 3 6 v l o w s i d e s w i t c h 3 6 v + - = 1 + + + - o u t 5 v n i n g n d v b g n d v o u t o e v b . . 3 0 v v r l v r h c f o m o n c h e n v o u t v o u t = 1
IC-DXC digital sensor i/o driver rev a0.8, page 9/ 11 circuit protection the IC-DXC is reverse polarity protected via internal circuitry. as far as the maximum voltage ratings are not exceeded, no possible supply combination at the line side pins (vb, gnd and out) can damage the chip. since the chip current consumption is relatively low, discharging of the backup capacitor c1 can be very slow, and injected charge through disturbances may in general result in capacitor voltage exceeding maxi- mum ratings, leading to malfunction or destruction of circuitry and associated parts. thus emc require- ments will afford more external circuitry. figure 7 shows the IC-DXC with the additional protective device d1, d2 and d3. figure 7: circuit schematic showing protective devices for over-voltage protection, the suppressor diodes d1,d2 and d3 absorbs transients on supply line in- jected externally on the cable. clamp voltage of the diodes should be rated slightly above maximum speci- ?ed supply voltage. these currents can be passed to ground or to vb by the internal esd diodes of the IC-DXC. whereas negative current injection will simply be drained off to ground, positive current injection will charge capacitor c1 further to higher voltages. if not suppressor diodes nor any other over-voltage protection is implemented, the backup capacitor c1 should be kept small. a typi- cal 100nf value is normally ok. suggested protective devices at vb max of 36v, suppressor diodes with a breakdown voltage from 36v has to be chosen in order to minimize the energy in IC-DXC for higher voltages. for example diode type like vishay gsot36c or pjsd36w from panjit should be enough as protection. p r e l i m i n a r y p r e l i m i n a r y 6 7 2 1 1 1 0 0 n f . . c 3 1 f e p a d 2 3 3 4 5 6 7 8 c 1 c 2 1 n f 3 6 v l o w s i d e s w i t c h 3 6 v h i g h s i d e s w i t c h d i g i t a l i n p u t v r e f r e g & < 1 5 0 c & i c - d x c f i l t 8 4 5 = 1 + + + - d 2 p s d 3 6 p s d 3 6 d 3 d 1 p s d 3 6 + - o u t 5 v n i n g n d v b v o u t o e v r l v r h c f o m o n p s d 3 6 d 1 p s d 3 6 d 2 d 3 p s d 3 6 = 1
IC-DXC digital sensor i/o driver rev a0.8, page 10/ 11 timing description the IC-DXC has a built-in spurious pulse suppression that prevents short (undesired) pulses at the input pins from reaching the output. every pulse at oe or nin pins shorter than 1.6 s (cf. electrical characteristics no. 306) will be ignored and the output will not re- act. the minimum required pulse length to be sure that the output reacts is 4 s (cf. electrical characteris- tics no. 307). that means that every pulse longer than 4 s will be propagated to the output but with an addi- tional propagation delay of 1.2 s maximum. the re- sulting maximum propagation delay is 5.2 s (cf. elec- trical characteristics no. 305). figure 8: timing diagram in push-pull operation mode with oe high figure 9: block diagram with en and nep internal signals ic-haus expressly reserves the right to change its products and/or speci?cations. an info letter gives details as to any amendments and additions made to the relevant current speci?cations on our internet website www.ichaus.de/infoletter ; this letter is generated automatically and shall be sent to registered users by email. copying C even as an excerpt C is only permitted with ic-haus approval in writing and precise reference to source. ic-haus does not warrant the accuracy, completeness or timeliness of the speci?cation and does not assume liability for any errors or omissions in these materials. the data speci?ed is intended solely for the purpose of product description. no representations or warranties, either express or implied, of merchantability, ?tness for a particular purpose or of any other nature are made hereunder with respect to information/speci?cation or the products to which information refers and no guarantee with respect to compliance to the intended use is given. in particular, this also applies to the stated possible applications or areas of applications of the product. ic-haus conveys no patent, copyright, mask work right or other trade mark right to this product. ic-haus assumes no liability for any patent and/or other trade mark rights of a third party resulting from processing or handling of the product and/or any other use of the product. as a general rule our developments, ips, principle circuitry and range of integrated circuits are suitable and speci?cally designed for appropriate use in technical applications, such as in devices, systems and any kind of technical equipment, in so far as they do not infringe existing patent rights. in principle the range of use is limitless in a technical sense and refers to the products listed in the inventory of goods compiled for the 2008 and following export trade statistics issued annually by the bureau of statistics in wiesbaden, for example, or to any product in the product catalogue published for the 2007 and following exhibitions in hanover (hannover-messe). we understand suitable application of our published designs to be state-of-the-art technology which can no longer be classed as inventive under the stipulations of patent law. our explicit application notes are to be treated only as mere examples of the many possible and extremely advantageous uses our products can be put to. p r e l i m i n a r y p r e l i m i n a r y m o n c f o t p c f t d r e o u t n i n n e p t p i o e n t t r i g ( ) s h o r t - c i r c u i t h i g h s i d e s w i t c h d i g i t a l i n p u t v r e f r e g & < 1 5 0 c & c v b 1 f c v o u t 1 0 0 n f . . i c - d x c f i l t n e p e n 3 6 v l o w s i d e s w i t c h 3 6 v = 1 + + + - + - o u t 5 v n i n g n d v b g n d v o u t o e v b . . 3 0 v v r l v r h c f o m o n = 1
IC-DXC digital sensor i/o driver rev a0.8, page 11/ 11 ordering information type package order designation IC-DXC dfn8 3x3 mm IC-DXC dfn8 3x3 for technical support, information about prices and terms of delivery please contact: ic-haus gmbh tel.: +49 (61 35) 92 92-0 am kuemmerling 18 fax: +49 (61 35) 92 92-192 d-55294 bodenheim web: http://www.ichaus.com germany e-mail: sales@ichaus.com appointed local distributors: http://www.ichaus.com/sales_partners p r e l i m i n a r y p r e l i m i n a r y

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