wall industries, inc. 37 industrial drive exeter , nh 03833 08/26/2014 603-778-2300 www.wallindustries.com fax 603-778-9797 page 1 of 4 datasheet rev. b LTW series 4:1 ultra wide input voltage ranges triple outputs 2.0 x 2.0 x 0.52 inch package 15w dc/dc power converters applications wireless networks telecom / datacom measurement equipment industry control systems semiconductor equipment features triple outputs rohs compliant 4:1 ultra wide input voltage ranges 15 watts output power efficiency up to 80% 100% burn-in tested short circuit protection remote on/off control six-sided shielding 2.0 x 2.0 x 0.52 inch package 1500vdc i/o isolation wide operating temperature range: -40c to +85c mtbf > 1,500,000 hours ul 94v-0 package material ul60950-1 approvals custom solutions available description the LTW series of dc/dc power converters provides 1 5 watts of continuous output power in a 2.0 x 2.0 x 0.52 package. this series has triple output models with 4:1 ultra wide input voltage ranges of 9-36vd c and 20- 72vdc. some features include 1500vdc i/o isolation, remote on/off control, six- sided shielding, efficiency up to 80%, and short circuit protection. this serie s is rohs compliant and has ul 60950-1 safety appro vals . these units are well suited for use in wireless networks, telecom/datacom applications, me asurement equipment, industry control systems, and semiconductor equipme nt. all models are 100% burn-in tested.
rev. b LTW series 15 watts triple outputs dc/dc power converters wall industries, inc. 37 industrial drive exeter , nh 03833 08/26/2014 603-778-2300 www.wallindustries.com fax 603-778-9797 page 2 of 4 specifications: LTW series all specifications are based on 25c, nominal input voltage, and maximum output current unless otherwi se noted. we reserve the right to change specifications based on technological advances. specification test conditions min nom max unit input specifications 24vdc nominal input models 9 24 36 input voltage range 48vdc nominal input models 20 48 72 vdc input filter capacitor remote on/off yes output specifications output voltage see table 5vdc output, io=1.5a 5 12vdc outputs, io=0.31a 2 voltage accuracy 15vdc outputs, io=0.25a 2 % load regulation 25% to 100% full load 0.2 % line regulation low line to high line at full load 1.0 % output power 0 15 w output current see table ripple & noise 20mhz bandwidth 100 mvp-p transient response time 50% load step change 350 s protection short circuit protection continuous, automatic recovery general specifications efficiency 80 % switching frequency 100 khz isolation voltage (input to output) (2sec/0.5ma) 1500 vdc isolation resistance (input to output) 500vdc 1000 m environmental specifications operating temperature with derating (see derating curve) -40 +85 c storage temperature -40 +100 c humidity (non-condensing) 95 % cooling free air convection mtbf mil-hdbk-217f at 25c, ground benign 1,500,000 hours physical specifications case material black coated copper with non-conductive base potting material epoxy (ul94v-0 rated) shielding six-sided weight 2.51oz (71.2g) dimensions (l x w x h) 2.0 x 2.0 x 0.52 inches (50.8 x 50.8 x 13.2 mm) safety & emi conducted emissions en55022 class a radiated emissions en55022 class a safety approvals ul 60950-1
rev. b LTW series 15 watts triple outputs dc/dc power converters wall industries, inc. 37 industrial drive exeter , nh 03833 08/26/2014 603-778-2300 www.wallindustries.com fax 603-778-9797 page 3 of 4 model selection table model number input voltage range output voltage output current output power vo 1 5 vdc 1.5a vo 2 +12 vdc 0.31a LTW2412-15ei vo 3 24 vdc (9 C 36 vdc) -12 vdc 0.31a 15w vo 1 5 vdc 1.5a vo 2 +15 vdc 0.25a LTW2415-15ei vo 3 24 vdc (9 C 36 vdc) -15vdc 0.25a 15w vo 1 5 vdc 1.5a vo 2 +12 vdc 0.31a LTW4812-15ei vo 3 48 vdc (20 C 72 vdc) -12 vdc 0.31a 15w vo 1 5 vdc 1.5a vo 2 +15 vdc 0.25a LTW4815-15ei vo 3 48 vdc (20 C 72 vdc) -15vdc 0.25a 15w applications test circuit recommended filter for en55022 class a compliance +vo1 +vo2 +vo3 com +vin gnd cin cout cout triple 100uf/25v 100uf/25v 24v & 48v:cin 100uf,100v graphs derating curve tolerance output current (%) output voltage (%) 120 110 100 90 80 70 100 75 50 25 0 -40 75 100 ambient temperature (c) 85 output power (%) 10 20 30 40 50 60 70 80 90 100 110 120 natural convection c1 c2 12uh 47uf 33uf +vin -vin +vout -vout dc/dc converter load l
rev. b LTW series 15 watts triple outputs dc/dc power converters wall industries, inc. 37 industrial drive exeter , nh 03833 08/26/2014 603-778-2300 www.wallindustries.com fax 603-778-9797 page 4 of 4 mechanical drawing pin connections pin triple 1 +vin 2 -vin 4 control 5 vo 2 6 vo 1 7 com 8 vo 3 notes 1. all case and pin to case are for reference only unless otherwise noted. 2. p.c. pins: 0.04 (1.0) dia x 0.26 (6.60) long. 3. pin to pin tolerance: 0.01 (0.25) pin diameter tolerance: 0.002 (0.05) 4. 10% minimum load required. 5. remote pin can be left floating if not used. 6. significant capacitive load on output may inhibit start-up and operation. 7. all dc/dc converters should be externally fused on the front end for protection. unit: inches (mm) bottom view 1 2 4 8 7 6 5 2.0 (50.8) 0.10 (2.54) 0.10 (2.54) 2.0 (50.8) 0.40 (10.16) 0.40 (10.16) 0.40 (10.16) 0.40 (10.16) 0.90 (22.86) 0.20 (5.08) tolerance: x.x0.02 (xx.x0.5) x.xx0.01 (xx.xx0.25) 0.240.024 (6.10.61) (pin length is taken from bottom of standoff to bottom of pin) 0.040.002 (1.00.05) 0.52 max (13.2) max 0.016 (0.4) heatsink surface 0.0080.004 (0.20.1) ?0.080.004 (?20.1) x 4 company information wall industries, inc. has created custom and modifi ed units for over 50 years. our in-house research a nd development engineers will provide a solution that exceeds your performance requirements on-time and on budget. ou r iso9001-2008 certification is just one example of our commitment to producing a high quality, well-documented produ ct for our customers. our past projects demonstrate our commitment to you , our customer. wall industries, inc. has a reputat ion for working closely with its customers to ensure each solution meets or exceeds form, fit and function requirement s. we will continue to provide ongoing support for your project above and beyond the design and production phases. give us a call today to discuss your future projects. contact wall industries for further information: phone : (603)778-2300 toll free : (888)587-9255 fax : (603)778-9797 e-mail : sales@wallindustries.com web : www.wallindustries.com address : 37 industrial drive exeter, nh 03833
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