i-1 rev.: 2/2016 www.recom-power.com dc/dc converter 3 y e a r w a r r a n t y 3 specifcations (measured at t a = 25c, full load, nominal input voltage and after warm-up) basic characteristics parameter condition min. typ. max. input voltage range 3.3v 5.0v 7vdc 8vdc 24vdc 28vdc input current min. vin 1.5ma 1000ma no load input current typ. vin 1.5ma operating frequency vin= 12vdc 330khz output ripple and noise typ. vin, full load and 20mhz bw limited 120mvp-p description the r-78e series is a switching regulator module that has been designed to offer all the advantages of a switching regulator (high effciency, wide input range, accurate output voltage regulation) but with a low cost for production quantities. due to the r-78es high effciency of up to 91% at an output voltage of 5v/1a at the output, no heat sink is required. the compact to- 220 compatible sip3 package measures only 11.6 x 8.5 x 10.4 mm, so it saves precious board space. the warranty is 3 years. features switching regulator ? effciency up to 91%, no need for heatsinks! ? pin-out compatible with lm78xx linear regs. ? low profle (l*w*h=11.6*8.5*10.4mm) ? wide input range (7v - 28v) ? short circuit protection 1.0 amp sip3 single output r-78e-1.0 selection guide part input output output effciency max. capacitive number voltage range voltage current typ @ min vin. load (vdc) (vdc) (ma) (%) (f) r-78e3.3-1.0 7 - 28 3.3 1000 87 220 r-78e5.0-1.0 8 - 28 5.0 1000 91 220 iec60950-1 certifed en60950-1 certifed effciency vs. load 7v 12v 24v 28v 8v 12v 24v 28v efficiency (%) output current (a) 0 75 80 85 90 95 100 0.2 0.4 0.6 0.8 1.0 efficiency (%) output current (a) 0 70 75 80 85 90 95 100 0.2 0.4 0.6 0.8 1.0 r-78e3.3-1.0 r-78e5.0-1.0
safety and certifications certifcate type (safety) report / file number standard iec general safety spclvd 1407030-1 iec60950-1, 2nd edition, 2011 en general safety spclvd 1407030-1 en60950-1, 2nd edition, 2011 emc compliance condition standard / criterion emi electrical conduction and radiation with external flter en55022, class a or b i-2 rev.: 2/2016 www.recom-power.com dc/dc converter environmental parameter condition value operating temperature range natural convection and with derating (see graph) -40c to +85c humidity non-condensing 95%, rh max. mtbf mil-hdbk 217f, +25c 3875 x 10 3 hours -40 60 80 85 100 40 20 0 0 20 40 60 80 100 ambient temperature (c) output power (%) derating graph specifcations (measured at t a = 25c, full load, nominal input voltage and after warm-up) r-78e-1.0 series regulations parameter condition value output voltage accuracy 3% typ. / 5% max. line voltage regulation low line to high line, full load 1% max. load voltage regulation typ vin. and 10% to 100% load 1.5% max. protections parameter condition value short circuit protection (scp) automatic recovery over current protection (ocp) 100% = 1a 200% load c2 c1 l1 +v in gnd +v out gnd r-78exx-1.0 emi filter suggestion class a and b model c1/c2 l1 class a 1210 10f, 50v mlcc 10h class b 33h
i-3 rev.: 2/2016 www.recom-power.com specifcations (measured at t a = 25c, full load, nominal input voltage and after warm-up) r-78e-1.0 series dimension and physical characteristics parameter value case material potting material ul94v-0, non-conductive black plastic ul94v-0, epoxy package dimension (lxwxh) 11.6 x 8.5 x 10.4mm package weight 2g typ. packaging information parameter type value packaging dimension (lxwxh) tube 520 x 18.2 x 11.2mm packaging quantity 42pcs. storage temperature range -55c to +125c bottom view top view r-78exx-1.0 xxxx r-78exx-1.0 xxxx 1 2 3 ?1.0 +0.15/-0 2.54 2.54 2.0 8.5 11.6 0.7 3.21 5.08 10.4 4.10 0.51 0.25 marking embossed logo dimension drawing (mm) the product information and specifcations are subject to change without prior notice. recom products are not authorized for use in safety-critical applications (such as life support) without recoms explicit written consent. a safety-critical application is defned as an application where a failure of a recom product may reasonably be expected to endanger or cause loss of life, infict bodily harm or damage property. the buyer shall indemnify and hold harmless recom, its affliated companies and its representatives against any damage claims in connection with the unauthorized use of recom products in such safety-critical applications. pin connections pin # function 1 +vin 2 gnd 3 +vout tolerance: xx.x= 0.50mm xx.xx= 0.25mm installation and application 10f mlcc (optional) to protect the converter during power-up, use soft start power supply. c1 c2 +v in gnd +v out gnd r-78exx-1.0 10f mlcc (optional) standard application: notes: note1: the r-78exx-1.0 can`t be used as positive to negativ converter. dc/dc converter
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