the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice LS03-15B12SR2K 2013.03.14-a/0 page 1 of 3 LS03-15B12SR2K features 1. wide input voltage:100 ~ 400vdc(85 ~ 264vac) 2. over current protection and short circuit protection 3. high efficiency, high density 4. low loss, green power 5. ultra-miniature package selection guide model package (typ.) power output (vo/io) efficiency (%) (typ.) LS03-15B12SR2K 43.0*19.0*11mm 3w 12v/250ma 78 input specifications input voltage range 100~400vdc(85~264vac) input current 120ma (max) inrush current 40a external input fuse (recommended) 1a/250v slow blow output specifications -20~+55 5% voltage set accuracy input variation -40~+85 8% input variation 1.5% (typ.) load variation (10%~100%) 2.5% (typ.) (external circuit refer to figure 1) 100mv(typ.) 150mv(max.) ripple & noise(p-p) (20mhz bandwidth) (external circuit refer to figure 2) 50mv(typ.) 100mv(max.) short circuit protection continuous, automatic resume over temperature protection no common specifications operating -40~+85 (55~85) 1.33%/ power derating (-40~20) 2%/ storage -40 ~+105 temperature ranges the max. case temperature +90 (max.) humidity 85% (max.) temperature coefficient 0.15%/ switching frequency variational frequency 50khz (max.) i/o-isolation voltage input and output 3000vac/1min ce cispr22/en55022, class a with typical application circuit emi re cispr22/en55022, class a with typical application circuit esd iec/en61000-4-2 contact 4kv perf. criteria b eft iec/en61000-4-4 2kv perf. criteria b with typical application circuit surge iec/en61000-4-5 1kv/ 2kv perf. criteria b with typical application circuit pfm iec/en61000-4-8 10a/m perf. criteria a emc ems voltage dips,short and interruptions immunity iec/en61000-4-11 0%-70% perf. criteria b
the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice LS03-15B12SR2K 2013.03.14-a/0 page 2 of 3 case material ul94v-0 install pcb mtbf >300,000h @25 note: 1. external electrolytic capacitor are required to models when ac input, more details refer to typical applications. 2. ripple and noise were measured by the method of anear measure (more details refer to the anear measure). 3. all specifications measured at ta=25 c, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 4. in this datasheet, all the test methods of indications are based on corporate standards. 5. recommended applications layout is as shown in the recommend layout. module required dispensing fixed after assembled, dispensing advice position refer to recommended layout . 6. it does not affect products' performance and reliability,that there are part of the pcb edge and resin bare out near the edge of module pin,because of the less envelope of the pcb edge. anear measure c1 c2 copper sheet load 25.4mm 25.4mm connect oscillograph probe fuse note: c1: 1 f (ceramic capacitor) c2: 10 f (electrolytic capacitor) structure figure dc/dc convertor +vin(l) -vin(n) external capacitor 3 5 12 10 + c1 1 rectifiter filter circuit +vo -vo gnd +cap 7 rectificate + c4 typical applications c2 c3 1 +vo -vo tvsrl 10 12 l n c4 + 5 + 3 fuse ntc mov 7 ac-dc + c1 l2 figure 1 typical application circuit c2 c5 1 +vo -vo tvs rl 10 12 l n c4 + 5 + 3 fuse ntc mov 7 ac-dc + c1 c6 + l1 l2 figure 2 typical application circuit l n +vo -vo ac-dc pe l n +vo -vo (figure 3) note: this application is not supported for this series. external capacitors typical value c1 c4 c2 c3 fuse c5 c6 l1 l2 tvs 4.7 f/400v 1 f/50v (ceramic c apacitor) 150 f/35v 1a/250v 120uf/25v 47uf/25v 10uh 5 mh -10mh smbj20a note: 1.c1, c4 : is filtering electrolytic capacitor (which is required), and the value of c1 is 4.7 f/400v. when input voltage is above 370vdc, and the value of c1 is 4.7 f/450v. 2.output filtering capacitor c3 of figure 1 or c5, c6 of figure 2 (which is required ) is recommended to use high frequency and low impedance electrolytic capacitors. for capacitance and current of capacitor please refer to manufacture s datasheet. voltage derating of capacitor should be 80% or above. c2 is ceramic capacitor; it is used to filter high frequency noise. tvs is a recommended component to protect post-circuits (if converter fails). external input ntc is recommended to use 5d-9. 3.for standard emc requirement, please refer to typical application circuit, if higher emc requirement ,please contact our technical person for more detail. mov:varistor, model: 471kd10 it is used to protect the device under surge. 4. l2 is h inductor, must connected to 1pin of module.
the copyright and authority for the interpretation of the products are reserved by mornsun specifications subject to change without notice LS03-15B12SR2K 2013.03.14-a/0 page 3 of 3 recommend layout 3d figure top view outline dimensions & footprint details 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 e-mail: info@mornsun.cn http://www.mornsun-power.com c5 c1 c4 relay1 varistor relay 2 thermistor LS03-15B12SR2K input pin c1 c4 c5 our module need fixed with glue, suggest dispensing position. mornsun , converter LS03-15B12SR2K l1 c6 l1 c6 l2 l2
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