this data sheet contains core information only. please click here for the full data sheet. the oky-t/3 and -t/5 series are miniature non- isolated point-of-load (pol) switch mode dc/dc power converters for embedded applications. the module is fully compatible with distributed-power open standards alliance (dosa) industry-standard speci? cations (www.dosapower.com). applications include powering cpus, datacom/telecom systems, distributed bus architectures (dba), programmable logic and mixed voltage systems. the wide input range is 2.4 to 5.5 volts dc. two maximum output currents are offered, 3 amps (t/3 models) or 5 amps (t/5 models). based on ? xed- frequency synchronous buck converter switching topology, the high power conversion ef? cient point of load (pol) module features programmable output voltage and on/off control. these converters also include under voltage lock out (uvlo), output short circuit protection, over-current and over temperature protections. these units are designed to meet all standard ul/en/iec 60950-1 safety and fcc emi/rfi emissions certi? cations and rohs-6 hazardous substance compliance. product overview connection diagram figure 1. oky-t/3, -t/5 note: murata power solutions strongly recommends an external input fuse, f1. see speci? cations. external dc power source f1 on/off control common common open = on closed = off +vin +vout trim controller reference and error ampli?er t 4 x j u d i j o h t ' j m u f s t t $ v s s f o u 4 f o t f features non-isolated smt pol dc/dc power module 2.4-5.5vdc input voltage range programmable output voltage from 0.75-3.63vdc 3 amp (t/3) or 5 amp (t/5) output current models drives 1000 f ceramic capacitive loads high power conversion ef? ciency at 96% outstanding thermal derating performance over temperature and over current protection on/off control ul/en/iec 60950-1 safety industry-standard (dosa) surface-mount package rohs-6 hazardous substance compliance typical unit contents of full data sheet page description, connection diagram, photograph 1 ordering guide, model numbering, product label 2 mechanical speci? cations, input/output pinout 3 detailed electrical speci? cations 4 output voltage adjustment, soldering guidelines 5 application notes 6 oky-t/3-w5 performance data and oscillograms 9 oky-t/5-w5 performance data and oscillograms 13 tape and reel information 19 t ypical unit oky t/3, t/5-w5 series adjustable output 3 and 5-amp dosa-smt pols mdc_ mdc_oky- t/3,t/5-w5 series.a02-short page 1 of 4 $ for full details go to www.murata-ps.com/rohs www.murata-ps.com www.murata-ps.com technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
part number structure this data sheet contains core information only. please click here for the full data sheet. ? dimensions are in inches (mm). ? these are partial model numbers. please refer to the part number structure for complete ordering part numbers. ? all specifications are at nominal line voltage, vout=nominal (3.3v) and full load, +25 ?c. unless otherwise noted. output capacitors are 1 f ceramic and 10 f electrolytic in parallel. input cap is 22 f. see detailed specifications. i/o caps are necessary for our test equipment and may not be needed for your application. vin must be 0.5v or higher than vout. ripple and noise is shown at vout=1v. ordering guide root model ? output input ef? ciency package v out (volts) i out (amps max) power (watts) r/n (mvp-p) ? regulation (max.) ? v in nom. (volts) range (volts) i in , no load (ma) i in , full load (amps) case c72 ? pinout max. line load min. typ. oky-t/3-w5n-c 0.7525-3.63 3 10.9 20 0.2% 1.5% 5 2.4-5.5 45 2.1 92% 94.4% 0.47 x 0.82 x 0.28 (11.9 x 20.8 x 7.0) p78 oky-t/3-w5p-c 0.7525-3.63 3 10.9 20 0.2% 1.5% 5 2.4-5.5 45 2.1 92% 94.4% 0.47 x 0.82 x 0.28 (11.9 x 20.8 x 7.0) p78 oky-t/5-w5n-c 0.7525-3.63 5 18 20 0.2% 1% 5 2.4-5.5 35 3.5 92% 96% 0.47 x 0.82 x 0.28 (11.9 x 20.8 x 7.0) p78 oky-t/5-w5p-c 0.7525-3.63 5 18 20 0.2% 1% 5 2.4-5.5 35 3.5 92% 96% 0.47 x 0.82 x 0.28 (11.9 x 20.8 x 7.0) p78 performance speci? cations and ordering guide okami non-isolated pol maximum rated output current in amps surface mount trimmable output voltage range 0.75-3.63v input voltage range 2.4-5.5v on/off polarity p = positive polarity n = negative polarity ok y -/ w5 - t 3 c - rohs hazardous substance compliance c = rohs-6 ( does not claim eu rohs exemption 7bClead in solder ) n note: some model number combinations may not be available. contact murata power solutions for availability. oky t/3, t/5-w5 series adjustable output 3 and 5-amp dosa-smt pols mdc_ mdc_oky- t/3,t/5-w5 series.a02-short page 2 of 4 technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com product label because of the small size of these products, the product label contains a character-reduced code to indicate the model number and manufacturing date code. not all items on the label are always used. here is the layout of the label: the label contains three rows of information: first row C murata power solutions logo second row C model number product code (see table) third row C manufacturing date code and revision level model number product code oky-t/3-w5n-c y00003 oky-t/3-w5p-c y01003 oky-t/5-w5n-c y00005 oky-t/5-w5p-c y01005 the manufacturing date code is four characters: first character C last digit of manufacturing year, example 200 9 second character C month code (1 through 9 and o through d) third character C day code (1 through 9 = 1 to 9, 10=o and 11 through 31 = a through z) fourth character C manufacturing information figure 2. label artwork layout y01003 product code mfg. date code revision level ymdx rev.
this data sheet contains core information only. please click here for the full data sheet. mechanical specifications 0.010 17.52 0.690 4.57 0.180 8.63 0.340 12.69 0.500 0.340 0.25 8.63 0.07 1.8 5.64 ref 0.222 0.420 ref 10.67 3 2 1 bottom view 4 5 typ 0.090 2.29 1.59 0.063 typ 0.06 1.5 end view material: smt pins: copper alloy finish: (all pins) gold (5u"min) over nickel (50u" min) isometric view pin #1 recommended pad layout top view pin #1 this point pickup corner (farside) nozzle 0.47 11.9 0.82 20.8 side view [17.52] 0.690 [11.9] 0.47 ref [1.52] 0.060 ref [4.57] 0.180 [8.63] 0.340 [8.63] 0.340 [12.69] 0.500 [1.8] 0.070 ref [20.8] 0.82 ref [3.05] 0.120 min [3.43] 0.135 max [2.41] 0.095 min [2.79] 0.110 max 0.28 7.0 0.063 1.59 mtg plane oky t/3, t/5-w5 series adjustable output 3 and 5-amp dosa-smt pols mdc_ mdc_oky- t/3,t/5-w5 series.a02-short page 3 of 4 technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com input/output connections oky-t/3, -t/5 pin function 1 on/off control* 2+v in 3 ground (common) 4 trim 5+v out *the remote on/off can be provided with either positive (p suf? x) or negative (n suf? x) polarity figure 3. oky-t/3, -t/5 mechanical outline third angle projection dimensions are in inches (mm shown for ref. only). components are shown for reference only. tolerances (unless otherwise speci?ed): .xx 0.02 (0.5) .xxx 0.010 (0.25) angles 1?
this data sheet contains core information only. please click here for the full data sheet. oky t/3, t/5-w5 series adjustable output 3 and 5-amp dosa-smt pols mdc_ mdc_oky- t/3,t/5-w5 series.a02-short page 4 of 4 murata power solutions, inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. the descriptions contained her ein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. speci? cations are subject to cha nge without notice. ? 2009 murata power solutions, inc. usa: mans? eld (ma), tel: (508) 339-3000, email: sales@murata-ps.com canada: toronto, tel: (866) 740-1232, email: toronto@murata-ps.com uk: milton keynes, tel: +44 (0)1908 615232, email: mk@murata-ps.com france: montigny le bretonneux, tel: +33 (0)1 34 60 01 01, email: france@murata-ps.com germany: mnchen, tel: +49 (0)89-544334-0, email: munich@murata-ps.com japan: tokyo, tel: 3-3779-1031, email: sales_tokyo@murata-ps.com osaka, tel: 6-6354-2025, email: sales_osaka@murata-ps.com china: shanghai, tel: +86 215 027 3678, email: shanghai@murata-ps.com guangzhou, tel: +86 208 221 8066, email: guangzhou@murata-ps.com singapore: parkway centre, tel: +65 6348 9096, email: singapore@murata-ps.com murata power solutions, inc. 11 cabot boulevard, mans? eld, ma 02048-1151 u.s.a. tel: (508) 339-3000 (800) 233-2765 fax: (508) 339-6356 www.murata-ps.com email: sales@murata-ps.com iso 9001 and 14001 registered technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com 04/15/09
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