the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. pwa_lt-1w5 & pwb_lt-1w5 b/3-2010 page 1 of 3 pwa_lt-1w5 & pwb_lt-1w5 series 1.5w, wide input isolated & regulated single/dual output dc/dc converter miniature smd package patent protection rohs features product program input output voltage (vdc) current (ma) part number nominal range max** voltage (vdc) max. min. efficiency (%, typ.) pwa2405lt-1w5 5 150 15 74 PWA2412LT-1W5 12 63 6 77 pwa2415lt-1w5 15 50 5 75 pwb2403lt-1w5 3.3 500 50 71 pwb2405lt-1w5 5 300 30 76 pwb2409lt-1w5 9 167 17 76 pwb2412lt-1w5 12 125 12 79 pwb2415lt-1w5 24 9.0-36 40 15 100 10 80 pwa4805lt-1w5 5 150 15 74 pwa4812lt-1w5 12 63 6 76 pwa4815lt-1w5 15 50 5 76 pwb4803lt-1w5 3.3 500 50 72 pwb4805lt-1w5 5 300 30 75 pwb4809lt-1w5 9 167 17 78 pwb4812lt-1w5 12 125 12 77 pwb4815lt-1w5 48 18-72 80 15 100 10 77 **input voltage can t exceed this value, or will cause the permanent damage. common specifications item test conditions min. typ. max. units storage humidity 95 % operating temperature -40 85 storage temp. range -55 125 temp. rise at full load 15 lead temperature 1.5mm from case for 10 seconds 300 c short circuit protection continuous, automatics recovery cooling free air convection case material epoxy resin (ul94-v0) mtbf 1000 k hours weight 5.2 g smd package 4:1 wide input voltage range short circuit protection(automatic recovery) 1500vdc isolation operating temperature: -40 c ~ +85 c no heatsink required no external component required mtbf>1,000,000 hours rohs compliance applications the pwa_lt-1w5 & pwb_lt-1w5 s eries are specially designed for applications where a wide range input voltage power supplies are isolated from the input power supply in a distributed power supply system on a circuit board. these products apply to: 1) where the voltage of the input power supply is wide range(voltage range 4:1); 2) where isolation is necessary between input and output (isolation voltage 1500vdc); 3 where the regulation of the output voltage and the output ripple noise are demanded. model selection pwa2405lt-1w5 product series input voltage output voltage package style rated power mornsun science & technology co.,ltd. address: no. 5, kehui st. 1, kehui development center, science ave., guangzhou science city, luogang district, guangzhou,p.r.china. tel: 86-20-28203030 fax:86-20-28203068 http://www.mornsun-power.com
the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. pwa_lt-1w5 & pwb_lt-1w5 b/3-2010 page 2 of 3 isolation specifications typical temperature curve item test conditions min. typ. max. units isolation voltage tested for 1 minute and 1ma m ax 1500 vdc isolation resistance test at 500vdc 1000 m isolation capacitance input/output, 100khz/1v 1000 pf output specifications item test conditions min. typ. max. units output power refer to products program 0.15 1.5 w positive voltage accuracy refer to recommended circuit 1 3 negative voltage accuracy refer to recommended circuit 3 5 load regulation from 10% to 100% load 0.5 1.5* line regulation input voltage from low to high 0.2 0.75 % temperature drift (vout) refer to recommended circuit 0.03 %/ c output ripple & noise** 20mhz bandwidth 35 100 mvp-p switching frequency 100% load, input voltage range 550 khz *dual output models unbalanced load: 5%. ** test ripple and noise by parallel cable method. see detailed operation instructions at testing of power converter section, application notes. operating temp.( ) c temperature derating graph safe operating area 0 50 100 150 200 250 time (sec.) t e m p e r a t u r e ( c ) 60 max (>220 c) sec 220 c 10 max sec peak.temp 240 c remark: the curve applies only to the hot air reflow soldering application note recommended circuit 1) requirement on output load in order to ensure the product operate efficiently and reliably, in addition to a max load (namely full load), a minimum load is specified for this kind of dc/dc converter. make sure the specified range of input voltage is not exceeded, the minimum output load no less than 10% load. if the actual load is less than the specified minimum load, the output ripple may increase sharply while its efficiency and reliability will reduce greatly. if the actual output power is very small, please add an appropriate resistor as extra loading, or contact our company for other lower output power products. 2) recommended circuit all the pwa_lt-1w5 & pwb_lt-1w5 series have been tested according to the following recommended testing circuit before leaving factory. this series should be tested under load (see figure 1). if you want to further decrease the input/output ripple, you can increase capa citance properly or choose capacitors with low esr. however, the capacitance of the output filter capacitor must be proper. if the capacitance is too big, a startup problem might arise. for every channel of output, provided the safe and reliable operation is ensured, the maximum capacitance of its filter capacitor sees (table 1). general: cin: 10 f~47 f cout: 10 f/100ma 3) input current when it is used in unregulated power supply, be sure that the fluctuating range of the power supply and the rippled voltage do not exceed the module standard. input current of power supply should afford the flash startup current of this kind of dc/dc module (f igure 2) general: ip 1.6*iin-max 4) no parallel connection or plug and play dc dc vin gnd +vo 0v cin vin gnd +vo 0v cin dc dc -vo single output figure 1 output external capacitor table (table 1) single vout (vdc) cout ( f) dual vout (vdc) cout ( f) 3.3 2200 5 680 9 680 12 330 5 1000 15 220 12 470 - - 15 330 -
the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. pwa_lt-1w5 & pwb_lt-1w5 b/3-2010 page 3 of 3 outline dimensions & pin connections 1 8 7 9 10 nc vin gnd -vo +vo 0v 16 nc vin gnd 0v +vo nc 1 1 . 3 0 [ 0 . 4 4 5 ] 22.20[0.874] 13.80[0.543] 1 7 . 2 2 [ 0 . 6 7 8 ] 1 4 . 4 0 [ 0 . 5 6 7 ] 8 . 8 0 [ 0 . 3 4 6 ] 10.00[0.394] 0.60[0.024] 2.54[0.100] 1.00[0.039] 2 . 1 0 [ 0 . 0 8 3 ] 2 . 5 4 [ 0 . 1 0 0 ] 16 109 1 7 8 pin single dual footprint details note: unit:mm[inch] pin section tolerances: 0.10mm[ 0.004inch] general tolerances: 0.25mm[ 0.010inch] mechanical dimensions recommended footprint(top view) tube outline dimensions dual/single output note: unit :mm[inch] general tolerances: 0.50mm[ 0.020inch] l=530mm[20.866inch] pcs/tube: 21 l=220mm[8.661inch] pcs/tube: 8 (top view) (side view) nc: no connection 3.04[0.120] 23.86[0.939] 15.24[0.600] 2.54[0.100] 1 8 . 1 0 [ 0 . 7 1 3 ] 1 3 . 7 0 [ 0 . 5 3 9 ] 0.25[0.010] 5 max 1.40 0.20 [0.055 0.008] 16 109 1 7 8 a a 8 . 0 0 [ 0 . 3 1 5 ] 7 . 5 0 [ 0 . 2 9 5 ] 0.50 [0.020] 1.02 [0.040] 18.10 [0.713] note: 1. the load shouldn't be less than 10%, otherwise ripple will increase dramatically. 2. operation under 10% load will not damage the converter; however, they may not meet all specification listed. 3. capacitor max load tested at input voltage range and full load. 4. all specifications measured at ta=25 c, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 5. only typical models listed, other models may be different, please contact our technical person for more details. 6. in this datasheet, all the test methods of indications are based on corporate standards.
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