the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. ib_ls-w25 & ib_ld-w25 a/1-2012 page 1 of 3 ib_ls-w25 & ib_ld-w25 series 0.25w, fixed input, isolated & regulated single output dc-dc converter rohs features product program input output voltage (vdc) current (ma) part number nominal range voltage (vdc) max. min. efficiency (%, typ.) package ib0505ld - w 25 5 50 5 56 dip ib0505ls-w25 5 4.75-5.25 5 50 5 56 sip IB1205LS-W25 12 11.4-12.6 5 50 5 59 sip ib2405ls-w25 24 22.8-25.2 5 50 5 59 sip note: models listed with strike-through text have been officially discontinued. isolation specifications item test condition min. typ. max. units isolation voltage tested for 1 minute and 1ma max 1000 vdc isolation resistance test at 500vdc 1000 m output specifications item test conditions min. typ. max. units output power 0.25 w line regulation for vin change of 5% 0.25 load regulation 10% to 100% load +1 output voltage accuracy 100% full load 3 % temperature drift 100% full load 0.03 %/ c ripple* 20mhz bandwidth 10 20 noise* 20mhz bandwidth 50 75 mvp-p switching frequency full load, nominal input 100 khz *test ripple and noise by parallel cable method. see detailed operation instructions at testing of power converter section, application notes. small footprint sip/dip package low ripple and good emc features temperature range: -40 c ~ +85 c no heatsink required no external component required 1kvdc isolation internal smd construction continuous short circuit protection industry standard pinout rohs compliance applications the ib_ls-w25 & ib_ld-w25 s eries are specially designed for applications where a single power supply is highly 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 fixed (voltage variation ? 5%); 2) where isolation is necessary between input and output (isolation voltage 1000vdc); 3) where the regulation of the output voltage and the output ripple and noise are demanded. model selection rated power package style output voltage input voltage product series 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: 86-20-38601850 fax:86-20-38601272 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. ib_ls-w25 & ib_ld-w25 a/1-2012 page 2 of 3 common specifications typical temperature curve item test condition min. typ. max. units storage humidity 95 % operating temperature -40 85 storage temperature -55 125 temp. rise at full load 15 25 lead temperature 1.5mm from case for 10 seconds 300 c cooling free air convection short circuit protection continuous case material plastic(ul94-v0) mtbf 3500 k ho urs ib_ls-w25 series 2.1 weight ib_ld-w25 series 2.4 g operating temp.( ) c application note recommended circuit 1) requirement on output load to ensure this module can operate efficiently and reliably, during operation, the minimum output load could not be less than 10% of the full load . if the actual output power is very small, please connect a resistor with proper resistance at the output end in parallel to increase the load, or use our company s products with a lower rated output power. 2) recommended testing and application circuit if you want to further decrease the input/output ripple, an lc filtering network may be connected to the input and output ends of the dc/dc converter, see (figure 1) it should also be noted that the inductance and th e frequency of the lc filtering network should be staggered with the dc/dc frequency to avoid mutual interference. however, the capacitance of the output filter capacitor must be proper. if the capacitance is too big, a startup problem might arise. it s not recommended to connect any external capacitor in the application field. 3) overload protection under normal operating conditions, the output circuit of these products has no protection against over-current. the simplest method is to connect a self- recovery fuse in series at the input end or add a circuit breaker to the circuit. 4) input over-voltage protection circuit the simplest device for input over- voltage protection is a linear voltage regulator with overheat protection that is connected to the input end in series (figure 2). 5) no parallel connection or plug and play l vin gnd +vo 0v dc cin l dc cout (figure 1) vin gnd 0v +vo dc dc reg (figure 2)
the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. ib_ls-w25 & ib_ld-w25 a/1-2012 page 3 of 3 note: 1. operation under minimum load will not damage the converter; however, they may not meet all specification listed. 2. all specifications measured at ta=25 c, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 3. only typical models listed, other models may be different, please contact our technical person for more details. 4. in this datasheet, all the test methods of indications are based on corporate standards. outline dimension & pin connections ib_ls-w25 4 1 6 2 ? 1.00 [0.039] 9.60 [0.378] 1 2 . 4 0 [ 0 . 4 8 8 ] 1 6 . 9 0 [ 0 . 6 6 5 ] 4.90 [0.193] 1 2 4 6 vin gnd 0v +vo function footprint details note: unit:mm[inch] pin section tolerances: 0.10mm[ 0.004inch] general tolerances: 0.25mm[ 0.010inch] note: unit :mm[inch] general tolerances: 0.50mm[ 0.020inch] (bottom view) pin mechanical dimensions recommended footprint tube outline dimensions l=530mm[20.866inch] devices per tube quantity: 25pcs l=220mm[8.661inch] devices per tube quantity: 10pcs short tube inner packaging dimensions: l*w*h=255*170*80mm short tube outer packaging dimensions(with six inner packaging boxes): l*w*h=375*280*270mm long tube inner packaging dimensions: l*w*h=580*200*100mm long tube outer packaging dimensions(with two inner packaging boxes): l*w*h=600*215*220mm long tube outer packaging dimensions(with three inner packaging boxes): l*w*h=600*215*325mm notegrid 2.54*2.54mm :. (front view) 12 4 6 19.60 [0.772] 4 . 1 0 [ 0 . 1 6 1 ] 0 . 5 0 [ 0 . 0 2 0 ] 0.50 [0.020] 0 . 9 0 [ 0 . 0 3 5 ] 0 . 3 0 [ 0 . 0 1 2 ] 10.16 [0.400] 2.54 [0.100] 6 . 0 0 [ 0 . 2 3 6 ] 10.00 [0.394] ib_ld-w25 14 11 9 7 ? 1.00[0.039] 12.50 [0.492] 1 6 . 5 0 [ 0 . 6 5 0 ] 1 0 . 5 0 [ 0 . 4 1 3 ] 3.50 [0.138] 1 7 9 11 14 gnd nc +vo 0v vin 1 function ncnoconnection : note: unit:mm[inch] pin section tolerances: 0.10mm[ 0.004inch] general tolerances: 0.25mm[ 0.010inch] note: unit :mm[inch] general tolerances: 0.50mm[ 0.020inch] mechanical dimensions recommended footprint tube outline dimensions footprint details pin l=530mm[20.866inch] devices per tube quantity: 25pcs l=220mm[8.661inch] devices per tube quantity: 10pcs short tube inner packaging dimensions: l*w*h=255*170*80mm short tube outer packaging dimensions(with six inner packaging boxes): l*w*h=375*280*270mm long tube inner packaging dimensions: l*w*h=580*200*100mm long tube outer packaging dimensions(with two inner packaging boxes): l*w*h=600*215*220mm long tube outer packaging dimensions(with three inner packaging boxes): l*w*h=600*215*325mm (front view) (bottom view) 14 1 11 9 7 20.00 [0.787] 1 0 . 0 0 [ 0 . 3 9 4 ] 7 . 0 0 [ 0 . 2 7 6 ] 4 . 1 0 [ 0 . 1 6 1 ] 0.50 [0.020] 0 . 3 0 [ 0 . 0 1 2 ] 7 . 6 2 [ 0 . 3 0 0 ] 0 . 5 0 [ 0 . 0 2 0 ] 15.24 [0.600] 12.70 [0.500] 7.62 [0.300] note: grid 2.54*2.54mm.
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