the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. krb_s-1w b/0-2012 page 1 of 3 krb_s-1w series 1w, wide input, regulated & non-isolated single output dc-dc converter patent protection rohs features product program input output voltage (vdc) current (ma) part number nominal range max.* voltage (vdc) max. min. efficiency (%, typ.) KRB0305S-1W 5 200 20 80 krb0309s-1w 9 110 11 81 krb0312s-1w 3.3 2.7-5.4 5.4 12 83 9 82 krb0512s-1w 12 83 9 83 krb0524s-1w 5 3.6-7.2 7.2 24 42 5 80 krb0703s-1w 3.3 300 30 83 krb0705s-1w 7.2 5-8 10 5 200 20 84 krb0712s - 1w 7.2 5 - 8 10 12 83 9 85 krb0724s-1w 7.2 6.4-8.4 10 24 42 5 82 krb1203s - 1w 12 9 - 1 4 14 3.3 300 30 8 0 krb1205s-1w 12 9-14 14 5 200 20 81 note: models listed with strike-through text have been officially discontinued. *if input voltage above specified may cause permanent damage to the device. output specifications item test conditions min. typ. max. units output power see above products program 0.1 1 w output voltage accuracy refer to recommended circuit 1 3 load regulation from 10% to 100% load 0.5 0.75 line regulation input voltage from low to high 0.2 0.5 % temperature drift (vout) refer to recommended circuit 0.02 %/ c ripple+noise* 20mhz bandwidth 80 150 mvp-p switching frequency 100% load, nominal input voltage 100 500 khz *t est ripple and noise by parallel cable method. see detailed operation instructions at testing of power converter section, application notes. note: KRB0305S-1W output voltage accuracy: 5%(max). miniature sip package high efficiency temperature range:-20 c ~ +71 c ul94-v0 package no external component required no heatsink required industry standard pinout mtbf>1,000,000 hours applications the krb_s-1w series are specially designed for applications where a wide range input voltage power supplies are unnecessary 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; 2) where isolation is unnecessary between input and output; 3) where the regulation of the output voltage and the output ripple/noise are not demanding. model selection 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: 86-20-38601850 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. krb_s-1w b/0-2012 page 2 of 3 common specifications typical charecteristics item test conditions min typ max units storage humidity 95 % storage temperature -55 125 operating temp. power derating (above 55 c) -20 71 lead temperature 1.5mm from case for 10 seconds 300 temp. rise at full load 15 25 c cooling free air convection case material plastic(ul94-v0) mtbf 25 c(mil-hdbk-217f) 1000 k hours weight 3 g operating temp.( ) c temperature derating graph 55 application note recommended circuit 1) requirement on output load to ensure this module operate efficiently and reliably, a minimum load is specified for this kind of dc/dc converter in addition to a maximum load (namely full load). during operation, make sure the specified range of input voltage is not exceeded, the minimum out put load is not less than 10% of the full load , if the actual load is less below the specified minimum load, the output ripple of this type of dc/dc converter may increase drastically. if the actual output power from the load in your circuit is very small, please connect a resistor with proper resistance at the output end to in parallel to increase the load, or use our company s other products with a lower rated output power. 2) recommended circuit this series have been tested according to the following recommended testing circuit before leaving factory (figure 1). if you want to further decrease the input/output ripple, you can increase capacitance properly or choose capacitors with low esr. however, the capacitance should not be too high(table 1). 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 startup current of this kind of dc/dc module (figure 2). 4) no parallel connection or plug and play vin gnd +vout gnd + + 100f 100v load dc-dc krb series 100f 100v (figure 1) i n p u t c u r r e n t ( a ) input voltage (v) input voltage range ip (figure 2) external capacitor table (table 1) cin cout (normal temp.) cout (-20 c ~+71 c) 100 f 100 f (electrolytic capacitor) 47 f (tantalum capacitor)
the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice. krb_s-1w b/0-2012 page 3 of 3 outline dimensions & footprint details 12.40 [0.488] 9.60 [0.378] 16.90 [0.665] 4.90 [0.193] note: unit:mm[inch] 0.10mm[0.004inch 0.25mm[0.010inch] ] pin section tolerances: general tolerances: note: unit:mm[inch] 0.50mm[0.020inch] general tolerances: l=530mm [20.866inch] 25pcs l=220mm [8.661inch] 10pcs packagingquantity: packagingquantity: note: grid 2.54*2.54mm . (front view) (bottom view) 1 2 vin gnd vo 7 footprint details pin function mechanical dimensions recommended footprint tube outline dimensions 4 . 1 0 [ 0 . 1 6 1 ] 2.54 [0.100] 0 . 5 0 [ 0 . 0 2 0 ] 1 0 . 0 0 [ 0 . 3 9 4 ] 15.24 [0.600] 0.50[0.020] 0 . 3 0 [ 0 . 0 1 2 ] 1 2 7 1 . 0 5 0 . 5 0 [ 0 . 0 4 1 0 . 0 2 0 ] 19.50 [0.768] 7 . 0 0 [ 0 . 2 7 6 ] shorttubeinnerpackagingdimensions: l*w*h=255*170*80mm; shorttubeouterpackaging dimensions (withsixinnerpackagingboxes): l*w*h=375*280*270mm; long tubeinnerpackagingdimensions: l*w*h=580*200*100mm; long tubeouterpackagingdimensions(withtwoinnerpackagingboxes) l*w*h=600*215*220mm; long tubeouterpackagingdimensions(with threeinnerpackagingboxes) l*w*h=600*215*325mm. 1.00 [0.039] 1 2 7 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.
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