dc series to 20 watts www . wallindustries . com 1 603 778 2300 up to 20 watts - dc series surface mount converter features: ? output trim function ? overvoltage protection ? high efficiency (to 88%) ? six sided shield ? undervoltage lockout ? remote on/off ? short-circuit protection ? ul/cul 1950, file #e155800 the dc series from wall industries the dc surface mount series offers the user a wide input range and single output with tight regulation. these converters are highly reliable and well suited for telecom applications. specifications: dc series input specifications input voltage range ........48v nominal input ..........36-75vdc input voltage lockout ......dc-dc on............................36vdc dc-dc off............................33vdc input filter (note 1)......................................................l-c type input voltage variation .....dv/dt ..............................5v/ms, max (complies with ets300 132 part 4.4) input surge voltage .........48v input (100ms max) .....100vdc input reflected ripple (note 2) ..................................25map-p (nominal vin at full load) start up time ...................nom. vin & const. res. load ....25ms remote on/off (note 3)...dc-dc on....open or 3.5v to 20 watts dc series 2 www . wallindustries . com 603 778 2300 input output output model efficiency voltage voltage current number (%) (vdc) (vdc) (a) 36-75 2.0 4 dc48s2.0-8 82 3.3 4 dc48s3.3-13 84 5 4 dc48s5-20 88 12 1.67 DC48S12-20 88 15 1.33 dc48s15-20 87 pin connections 1 +vout 2 -vout 3 n/c (note 7) 4 trim 5 n/c (note 7) 6 n/c (note 7) 7 n/c (note 7) 8 remote on/off 9 sync 10 n/c (note 7) 11 -vin 12 +vin notes: 1. an external filter capacitor is required for normal operation. the capacitor should be capable of han- dling 1a ripple current. we suggest: nippon chemi- con kmf series, 220 f/100v, esr 90mohm 2. simulated source impedance of 12 h. 12h inductor in series with +vin. 3. remote on/off is referenced to the negative input (- vin). 4. measured with 104pf/50v mlcc. t est conditions: nominal input and full load. 5. bellcore tr-nwt-000332. case i: 50% stress, t emperature at 40oc. (ground fixed and controlled environment). 6. we recommend solder paste volume of 2.8 cubic mm (170,000 cubic mills/pin). 7. n/c pins may be used internally by the module and should not be connected by the customer. due to advances in technology, specifications subject to change without notice. 3/18/04
to 20 watts dc series www . wallindustries . com 3 603 778 2300 outline diagram dimensions are in inches and (millimeters). tolerances: x.x 0.02 in. (0.5 mm) - x.xx 0.015 in. (0.4 mm) 3/18/04
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