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note 1:1.5v output can be unstable with vin>30vdc 0.5 amp smd single output innoline dc/dc-converter r-78axx- 0.5smd series efficiency up to 97%,non isolated, no need for heatsinks smd package adjustable output voltage wide input range.(4.75v ~ 34v) short circuit protection, thermal shutdown remote on/off control ul94v-0 package material very low shutdown current see positive-to negative converter application note for use as a voltage inverter (alternative to lm79xx linear) features selection guide part input output adjust output efficiency number range (1) voltage range current min. vin max. vin smd (v) (v) (v) (a) (%) (%) r-78a1.5-0.5smd 4.75 C 30 1.5 fixed 0.5 73 63 r-78a1.8-0.5smd 4.75 C 34 1.8 1.5~3.3 0.5 82 71 r-78a2.5-0.5smd 4.75 C 34 2.5 1.5~4.5 0.5 87 77 r-78a3.3-0.5smd 4.75 C 34 3.3 1.8~5.5 0.5 91 81 r-78a5.0-0.5smd 6.5 C 34 5.0 2.5~8.0 0.5 94 86 r-78a6.5-0.5smd 8.0 C 34 6.5 3.3~11.0 0.5 95 88 r-78a9.0-0.5smd 11 C 34 9.0 4.5~12.6 0.5 96 92 r-78a12-0.5smd 15 C 34 12 4.5~12.6 0.5 97 94 r-78a15-0.5smd 18 C 34 15 fixed 0.5 97 95

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derating-graph (ambient temperature) the r-78axx-0.5smd series high efficiency switching regulators are ideally suited to pick-and-place mass production. the efficiency of up to 97% means that very little energy is wasted as heat. the additional featu- res of remote on/off control and adjustable output voltages will find many uses in the battery-powered, industrial, medical and automotive markets. low ripple and noise figures and a shutdown input current of typically only 20ua round off the specifications of this versatile smd converter series. description 27-march-2007 143 www.recom-international.com
characteristics conditions min. typ. max. input voltage range (note 1) see table 4.75 34.0v output voltage range see table 1.5 15v output current all series 0 500ma output current limit all series 2000ma short circuit input current all series 25ma internal power dissipation 0.4w short circuit protection continuous, automatic recovery output voltage accuracy (at 100% load) all series 2 3% adjustable voltage range see table 1 50% line voltage regulation (vin = min. to max. at full load) 1.5v to 6.5v 0.2 0.4% 9v to 15v 0.1 0.2% load regulation (10 to 100% full load) 1.5v to 6.5v 0.7 1.0% 9v to 15v 0.25 0.4% dynamic load stability 100% <-> 50% load 75v 100% <-> 10% load 100mv ripple & noise (without output capacitor) 1.5v to 6.5v 20mvp-p 30mvp-p 9v to 15.5v 30mvp-p 40mvp-p temperature coefficient -40c ~ +85c ambient 0.015%/c max capacitance load 220f switching frequency 280 330 380khz quiescent current vin = min. to max. at 0% load 5 7ma shutdown input current 20 35ua remote on/off threshold voltage 0.8 1.2 1.6v on/off remote control on: open or 1.6
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$%$+, } 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.. see application examples for details. 27-march-2007 www.recom-international.com 144
innoline dc/dc-converter characteristics - ' '* - ' '*$. $#))/( $0,$ $01,1$ $0$ $02$ $0$3$ $$ 1 1 $0,$ efficiency - ' '* , - ' '*$. /($045 $0,$ $01,1$ $0$ $0$
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application examples innoline dc/dc-converter 57 (
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< ' smd 10pin package pin connections pin # 1,2 +vin 3,7,8,9 gnd 4,5 +vout 6 v adj 10 remote on/off xx.x 0.5mm xx.xx 0.25mm table 1: adjustment resistor values innoline dc/dc-converter 0.5adc r-78a1.8 r-78a2.5 r-78a3.3 r-78a5.0 r-78a6.5 r-78a9.0 r-78a12 -0.5smd -0.5smd -0.5smd -0.5smd -0.5smd -0.5smd -0.5smd vout (nom.) 1.8vdc 2.5vdc 3.3vdc 5.0vdc 6.5vdc 9.0vdc 12.0vdc vout (adj) r1 r2 r1 r2 r1 r2 r1 r2 r1 r2 r1 r2 r1 r2 1.5 (v) 3k ? 200 ? 1.8 (v) 12k ? 2.5 (v) 12k ? 21k ? 5.6k ? 3.0 (v) 4.7k ? 50k ? 88.4k ? 17k ? 3.3 (v) 2.7k ? 29k ? 27k ? 6.7k ? 3.6 (v) 19.4k ? 69k ? 42k ? 14k ? 3.9 (v) 14k ? 30.5k ? 58k ? 23k ? 4.5 (v) 8k ? 12.1k ? 180k ? 49k ? 26k ? 17k ? 4.9 (v) 7.6k ? 850k ? 77k ? 36k ? 24k ? 5.0 (v) 6.8k ? 86k ? 39k ? 26k ? 5.1 (v) 6.2k ? 540k ? 97k ? 42k ? 28k ? 5.5 (v) 4k ? 71k ? 160k ? 56k ? 36k ? 6.5 (v) 20.2k ? 112k ? 63k ? 8.0 (v) 7.2k ? 26k ? 400k ? 125k ? 9.0 (v) 11.3k ? 200k ? 10 (v) 5.2k ? 59k ? 345k ? 11 (v) 1.8k ? 18.5k ? 740k ? 12 (v) 5.2k ? 12.6 (v) 830k ? 216k ? r-78axx-0.5 smd series recommended footprint details 27-march-2007 147 www.recom-international.com

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