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www.recom-international.com 1 13-february-2007 1.5 amp sip3 single output innoline dc/dc-converter r-78bxx- 1.5(l) series efficiency up to 95%,non isolated, no need for heatsinks pin-out compatible with lm78xx linears low profile( l*w*h=11.5*8.5*17.5mm) wide input range.(4.75v ~ 18v) short circuit protection, thermal shutdown non standard outputs available as specials between 1.5v ~ 6.5v low ripple and noise l version with 90 pins features selection guide part input output output efficiency number* range voltage current min. vin max. vin sip3 (v) (v) (a) (%) (%) r-78b1.5-1.5 4.75 C 18 1.5 1.5 83 78 r-78b1.8-1.5 4.75 C 18 1.8 1.5 85 81 r-78b2.5-1.5 4.75 C 18 2.5 1.5 88 84 r-78b3.3-1.5 4.75 C 18 3.3 1.5 91 88 r-78b5.0-1.5 6.5 C 18 5.0 1.5 94 92 r-78b6.5-1.5 8.0 C 18 6.5 1.5 95 93

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derating-graph (ambient temperature) the r-78bxx-1.5 series high efficiency switching regulators are ideally suited to replace 78xx linear regula- tors and are pin compatible. the efficiency of up to 95% means that very little energy is wasted as heat so there is no need for any heat sinks with their additional space and mounting costs. the l-version with 90 pins allows direct replacement for laid-flat regulators where component height is at a premium.low ripple and noise figures and a short circuit input current of typically only 10ma round off the specifications of this versatile converter series. description * add suffix l for 90 bent pins, e.g. r-78b5.0-1.5l
2 www.recom-international.com 13-february-2007 characteristics conditions min. typ. max. input voltage range all series, see selection guide 4.75 18.0v output voltage range (for customized parts) all series 1.5 6.5v output current (see note 1) all series 0 1500ma output current limit all series 5000ma short circuit input current all series 60 80ma internal power dissipation 0.65w short circuit protection continuous, automatic recovery output voltage accuracy (at 100% load) all series 2 3% line voltage regu?lation (vin = min. to max. at full load) all series 0.2 0.4% load regulation (10% to 100% full load) all series 20 25mv dynamic load stability (with output capacitor=100f) 100% <-> 50% load 80 120mv transient recovery time 1.0 1.5ms ripple & noise (10% to 100% full load) all series 15 30mvp-p temperature coefficient -40c ~ +85c ambient 0.015%/c max capacitance load 1000f switching frequency 300 340 380khz quiescent current vin = min. to max. at 0% load 7 9ma input reflected ripple current all series 150 200map-p operating temperature range -40c +85c operating case temperature +100c storage temperature range -55c +125c case thermal impendance 60c / w thermal shutdown internal ic junction +160c relative humidity 95% rh case material epoxy with non-conductive plastic case(ul94v-0) package weight 4g mtbf (+25c) using mil-hdbk 217f 3250 x 103 hours . (+71c) using mil-hdbk 217f 1059 x 103 hours note 1: the converter requires a minimum load of 6ma to start up properly. once started, the load can be reduced to 0% r-78bxx-1.5 (l) series specifications (refer to the standard application circuit, ta: 25c, minimum load = 10%) innoline dc/dc-converter standard application circuit

"# } detailed information see application notes chapter "mtbf" add a blocking diode to vout if current can flow backwards into the out- put, as this can damage the converter.
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