1 ec 3a series 3 watt 2:1 input range dc-dc converters feature s * 3w isolated output * 24-pin dip package * efficiency to 87% * 2:1 input range * regulated outputs * pi input filter * continuous short circuit protection * meet emi en55022 class a (-e model) * no tantalum capacitor inside (-e model) * wide operating temperature range (-e model) * ul60950-1 approval for h/hm versions only and -e model note: 1. suffix -e of the models are high efficiency an d wide operating temperature version. 2. nominal input voltage is 5, 12, 24 or 48vdc. 3. typical value at nominal input voltage and full load. model number (1) input voltage (2) output voltage output current input current % eff. (3) capacitor load max. no load full load -e -e -e -e ec3a01 4.5 - 6 vdc 4.5 - 9 vdc 5 vdc 600 ma 15 ma 15 ma 800 ma 779 ma 75 77 2200uf ec3a02 4.5-6 vdc 4.5-9 vdc 12 vdc 250 ma 15 ma 15 ma 759 ma 750 ma 79 80 2200uf ec3a03 4.5 - 6 vdc 4. 5 - 9 vdc 15 vdc 200 ma 15 ma 15 ma 779 ma 750 ma 77 80 2200uf ec3a04 4.5-6 vdc 4.5-9 vdc 5 vdc 300 ma 25 ma 25 ma 779 ma 779 ma 77 77 1000uf ec3a05 4.5 - 6 vdc 4.5 - 9 vdc 12 vdc 125 ma 25 ma 25 ma 789 ma 750 ma 76 80 1000uf ec3a06 4.5-6 vdc 4.5-9 vdc 1 5 vdc 100 ma 25 ma 25 ma 800 ma 750 ma 75 80 1000uf ec3a07 4.5 - 6 vdc 4.5 - 9 vdc 3.3 vdc 600 ma 15 ma 15 ma 582 ma 550 ma 68 72 2200uf ec3a11 9 - 18 vdc 5 vdc 600 ma 7.5 ma 7.5 ma 325 ma 309 ma 77 81 2200uf ec3a12 9 - 18 vdc 12 vdc 250 ma 7.5 ma 10 ma 313 ma 298 ma 80 84 2200uf ec3a13 9 - 18 vdc 15 vdc 200 ma 7.5 ma 10 ma 316 ma 294 ma 79 85 2200uf ec3a14 9 - 18 vdc 5 vdc 300 ma 12 ma 15 ma 325 ma 305 ma 77 82 1000uf ec3a15 9 - 18 vdc 12 vdc 125 ma 12 ma 12 ma 325 ma 298 ma 77 84 1000uf ec3a16 9 - 18 vdc 15 vdc 100 ma 12 ma 15 ma 316 ma 294 ma 79 85 1000uf ec3a17 9 - 18 vdc 3.3 vdc 600 ma 7.5 ma 7.5 ma 229 ma 212 ma 72 78 2200uf ec3a21 18 - 36 vdc 5 vdc 600 ma 5 ma 7.5 ma 158 ma 152 ma 79 82 2200uf ec3a22 18 - 36 vdc 12 vdc 250 ma 5 ma 7.5 ma 156 ma 145 ma 80 86 2200uf ec3a23 18 - 36 vdc 15 vdc 200 ma 5 ma 7.5 ma 152 ma 145 ma 82 86 2200uf ec3a24 18 - 36 vdc 5 vdc 300 ma 7.5 ma 7.5 ma 162 ma 152 ma 77 82 1000uf ec3a25 18 - 36 vdc 12 vdc 125 ma 7.5 ma 10 ma 158 ma 147 ma 79 85 1000uf ec3a26 18 - 36 vdc 15 vdc 1 00 ma 7.5 ma 10 ma 154 ma 145 ma 81 86 1000uf ec3a27 18 - 36 vdc 3.3 vdc 600 ma 5 ma 5 ma 111 ma 106 ma 74 78 2200uf ec3a31 36 - 72 vdc 5 vdc 600 ma 2 ma 3 ma 78 ma 74 ma 79 84 2200uf ec3a32 36 - 72 vdc 12 vdc 250 ma 2 ma 3 ma 78 ma 73 ma 80 86 2200uf ec3a33 36 - 72 vdc 15 vdc 200 ma 2 ma 5 ma 78 ma 73 ma 80 86 2200uf ec3a34 36 - 72 vdc 5 vdc 300 ma 3 ma 5 ma 80 ma 74 ma 78 85 1000uf ec3a35 36 - 72 vdc 12 vdc 125 ma 3 ma 5 ma 80 ma 72 ma 78 87 1000uf ec3a36 36 - 72 vdc 15 vdc 100 ma 3 ma 5 ma 80 ma 72 ma 78 87 1000uf ec3a37 36 - 72 vdc 3.3 vdc 600 ma 3 ma 3 ma 57 ma 52 ma 72 79 2200uf
2 specifications all specifications typical at nominal line, full load, and 25 unless otherwise noted input specifications: general specifications: input voltage range ............... 5v .... ............4.5-6v, 4.5-9v efficiency ....................................... ....................................... see table 12v ..................... 9-18v isolation voltage: 24v ..................... 18-36v 500 vdc min. . standard models 48v ................... 36-72v 3k vdc min. (non-conductive black plastic only) .. suffix h models input surge voltage (100ms max.) . 5v ..... .. 10vdc max. 1.5k vdc min. .... suffix hm models 12v ................. 25vdc max. isolation resistance ............................. ........................ 10 9 ohm min. 24v ................. 50vdc max. isolation capacitance .... 250pf typ . 48v ............... 100vdc max. switching frequency .............................. ..................... 100khz, min. input filter ... pi type operating ambient temperature range .............. ........ -25 to +71 output specifications: -e models: -40 to +85 voltage accuracy ................................. ..................................... 2.0% max. power de-rating curve .... see figur e1 voltage balance (dual) ........................... ................................... 1.0% max. case temperature (note 4) plastic/copper case 9 5 /100 max. temperature coefficient .. 0.05% / cooling .. natural convection ripple & noise, 20mhz bw (note 5) 3.3v/5v 1 00mv p-p, max. storage temperature range .......... -40 to +100 12v/15v 1% p-p max. humidity .......................................... ........ 95% rh max. non condensing short circuit protection continu ous mtbf . mil-std-217f .... 2000khrs typ . line regulation single/dual (note 1) . 0.5% max. -e m odels: 2500khrs typ. load regulation .. single (note 2) ..... 0.5% max. dimensions dip .. 1.25 0.80x0.40 inches(31.8x20.3 10.2mm) dual (note 3) ... 1.0% max. smd 1.25 0.80x0.45 inches(31.8x20.3 11.4mm) start up time ......10 ms max. s/hs models (note 6) ... 1.25 0.80x0.41 inches(31.8x20.3 10.4mm) note: case material: 1. measured from high line to low line standard models . non-conductive black pla stic 2. measured from full load to 10% load suffix m models .. black coated copper with non-c onductive base 3. measured from full load to 1/4 load suffix s models .. smd package 4. maximum case temperature under any operating con dition should weight . 12.5g not exceed 95 (plastic case), 100 (copper case). 5. the output noise is measured with 0.1uf mlcc acr oss for smd package 6. s and hs models for e version only case a dimensions: bottom view see note pin connection 500 vdc 1.5k & 3k vdc pin single output dual output 1,24 2,23 3,22 10,15 11,14 12,13 +v input nc nc -v output +v output -v input +v input -v output -v input common common +v output * np-no pin * nc-no connection with pin note:pin size is 0.02 0.002inch (0.50.05mm)dia all dimensions in inches (mm) tolerances inches: x.xx= 0.02 , x.xxx= 0.0 10 millimeters: x.x= 0.5 , x.xx=0.25 9 4 20,21 case as top view dip smd np nc np nc np nc dip smd pin single output dual output dip smd dip smd np nc np nc np nc nc nc -v output common -v input -v input +v output +v output common -v output +v input +v input 1,24 2,3 10,15 11 12,13 14 9 22,23 16 4,5 20,21 np nc np nc np nc np nc nc nc np nc np nc np nc np nc 16 np nc np nc 5 np nc np nc *0.41(10.4)mm for "-e" version s/hs models figure1.typical derating curve for natural convecti on 100 71 -40 100 -40 85 0% 20% 40% 60% 80% 100% 120% -40 -20 0 20 40 60 80 100 ambient temperature( o c) load(%) plastic case copper case -e version
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