key features ? efficiency 90% minimum ? input/output isolated ? single and combinable dual output ? designed to meet fcc section 15, sub part j, a & b ? balanced load ? full range operating to 85c ? designed for low noise, high efficiency applications ? outputs may be paralleled reliability ? incorporated product data sheet 7 - 18 watt z-pac? dc/dc converters the z-pac series of dc/dc converters provides the performance advantages of conventional linear converters with a minimum efficiency of 90%. the units are designed to encompass a/d and d/a converters, operational amplifiers, rs232, 444 and 488 as well as negativ e voltage biasing. the units are also suitable in battery or solar powered equipment and in a wide vari ety of other uses in commercial and industrial equipment. the 18 watt model is specifically intended for ethernet/cheapernet hub applications. the series operates from inputs of 5 and 12 vdc with single and dual outputs. all z-pac devices operate over their full temperature range with no derating. reliability incorporated also provides custom designed dc/dc converters to meet customer specifications. reliability incorporated is based in houston, texa s, usa and is a leading provider of semiconductor processing equipment and dc/dc converters. corporate headquarters, located in houston, tx, usa is iso 9001 certified. dc/dc converters ar e manufactured in costa rica. general electrical specifications (specifications at nominal input and 25 c, nominal input voltage and rated out put current unless otherw i se noted.) parameter limits conditions input voltage range 20% all units input filter yes all units input ripple current 5% (p-p) of average input current maximum input voltage (1) 8v, 15v (max) 5v & 12v inputs, respectively output voltage see selection guide output current see selection guide output voltage accuracy 3% 80% of full load, nominal input output ripple and noise 100mv (p-p) 20 hz - 20 mhz, bw ext. cap across outputs load regulation see graphs balanced loads line regulation 1.25% per 1% (max) delta vo/ delta v in 80% full load minimum load 25ma all units isolation 500 vdc all units efficiency (2) 90% (min) 80% of full load, nominal input short circuit protection momentary recommended for full protection, use external fuse operating temperature -40c to +85c no derating storage temperature -55c to 125c case 2" x 2" x 0.375" ry ton ul 94v-0 fcc sect. 15 sub part j yes class b radiated, class a conducted (1) note that the output v o ltage w ill increase accordingly . un its may be operated at maximum input v o ltage continuously . (2) minimum of 85% for single 5v output and 9v output unit. do not operate the conv erters under no load conditions. to prev en t high output v o ltages alw a y s hav e at least 25ma of load curre nt on each output. the positiv e or negativ e output may be used as an output common to obtain 24 or 30 vdc. in this application do not use pin 4, t he standard output common. the maximum output current w ill be as specified for a single output, i.e., 300ma for 24v and 250ma for 30 vdc. 4 .com u datasheet
reliability ? selection guide device ty pe input volts vdc input current a (max) output voltage output current ma (max) package/ pinout 7a5u5 4.5 - 5.5 1.5 + or - 5 1500 a 7a5u12-12 4.5 - 5.5 1.3 + and - 12 300 a 7d5u12-12 4.5 - 5.5 1.3 + and - 12 300 d 7d12u12-12 10.8 - 13.2 0.53 + and - 12 300 d 7d12u15-15 10.8 - 13.2 0.6 + and - 15 250 d 18ZA12U9 11.4 ? 12.6 1.6 + or ? 9 2000 a pin connections: pin single input pin dual output 1 + input 1 + input 2 ? input 2 ? input 3 + output 3 + output 4 ? o u t p u t 4 c o m m o n 5 ? output 5 ? output m echanical specification (dimensions in inches) 7-18 watt z-pac.doc 4/22/2003 4 .com u datasheet
performance data reliability incorporated locations headquarters sales far east sales reliability incor por ated p.o. box 218370 houston, texas 77218 usa tel: 281 492-0550 fax 281 492-0615 www. r e l i n c . c o m reliability incor por ated tel: 281 492-0550 fax 281 492-0615 dcdcinfo@relinc.com www. d c - d c p o w e r . c o m reliability singapore pte. ltd. blk 103 boon keng rd. singapore 339774 tel: 65 299 4938 fax: 65 299 4829 iso 9001 certified iso 9001 certified iso 9002 certified copy right? 2003, reliability incorporated. reliability reserves t he right to make changes in the product at any time, w i thout notification. 7-18 watt z-pac.doc 4/22/2003 4 .com u datasheet
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