the copyright and authority for the interpretation of the products are reserved by mornsun a_(x)t-1w b/2-2012 page 1 of 5 a_(x)t-1w series 1w, fixed input, isolated & unregulated dual output dc-dc converter ultraminiature smd package patent protection rohs model selection a0505(x)t-1w product series input voltage output voltage package style rated power product features small footprint smd package high efficiency up to 79% 1kvdc isolation temperature range: -40 c ~ +85 c industry standard pinout no heatsink required internal smd construction no external component required rohs compliance applications the a_(x)t-1w s eries are specially designed for applications where a group of polar 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 t he voltage of the input power supply is fixed (voltage variation 10%); 2) where isolation is necessary between input and output (isolation voltage 1000vdc); 3) where the regulation of the output voltage and the output ripple noise are not demanding. such a s: purely digital circuits, ordinary low frequency analog circuits, and igbt power device driving circuits. product program input voltage(vdc) output current (ma) input current (ma)(typ.) model number nominal (range) output voltage (vdc) max. min. @max. load @no load reflected ripple current (ma,typ.) max. capacitive load( f) efficiency (%, typ.) @max. load approval a0305(x)t-1w 5 100 10 427 44 19 71 a0312(x)t-1w 12 42 5 368 33 29 79 a0315(x)t-1w 3.3 (2.97-3.63) 15 33 4 361 27.4 45 79 a0505(x)t-1w 5 100 10 280 34 20 71 ul a0509(x)t-1w 9 56 6 249 27 20 77 ul a0512(x)t-1w 12 42 5 258 33 19 78 ul a0515(x)t-1w 5 (4.5-5.5) 15 33 4 250 31 19 78 ul a1205(x)t-1w 5 100 10 112 11 18 71 ul a1209(x)t-1w 9 56 6 112 17 17 73 ul a1212(x)t-1w 12 42 5 109 18 19 74 ul a1215(x)t-1w 12 (10.8-13.2) 15 33 4 110 22 16 74 ul a1515(x)t-1w 15(13.5-16.5) 15 33 4 80 11 14 79 a2405(x)t-1w 5 100 10 57 7 14 72 a2409(x)t-1w 9 56 6 53 7 18 74 a2412(x)t-1w 12 42 5 51 7 20 76 a2415(x)t-1w 15 33 4 51 7 16 77 a2424(x)t-1w 24 (21.6-26.4) 24 21 2 49 6 20 100 78 note: 1. the a_xt-1w series have no 3,6,8,9 pin. for example A0505XT-1W. 2. a_xt-1w series: ul-609501 pending.
the copyright and authority for the interpretation of the products are reserved by mornsun a_(x)t-1w b/2-2012 page 2 of 5 intput specifications item test conditions min. typ. max. units 3.3vdc input models -0.7 -- 5 5vdc input models -0.7 -- 9 12vdc input models -0.7 -- 18 15vdc input models -0.7 -- 21 input surge voltage (1sec. max.) 24vdc input models -0.7 -- 30 vdc reverse polarity input current* -- -- 0.4 a input filter c filter note: *if the product reverse did not seek to limit current, may result in injury or permanent damage, testing is not recommended. output specifications item test conditions min. typ. max. units output power 0.1 -- 1 w output voltage accuracy see tolerance envelope graph output voltage balance dual output, balanced loads -- 0.5 1.0 line regulation for vin change of 1% -- -- 1.2 5v output -- 12.8 15 9v output -- 8.3 10 12v output -- 6.8 10 15v output -- 6.3 10 load regulation 10% to 100% load 24v output -- 6.0 10 % temperature drift 100% full load -- -- 0.03 %/ c ripple & noise* 20mhz bandwidth -- 50 75 mvp-p short circuit protection** -- -- 1 s note: 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. **supply voltage must be discontinued at the end of short circuit duration. common specifications item test conditions min. typ. max. units isolation voltage tested for 1 minute and 1ma max 1000 -- -- vdc isolation resistance test at 500vdc 1000 -- -- m a2424(x)t-1w 100 -- isolation capacitance input/output,100khz/1v other models -- 30 -- pf full load, nominal input (5v/12v) -- 100 -- switching frequency full load, nominal input (15v/24v) -- 500 -- khz mtbf mil-hdbk-217f@25 3500 -- -- k hours case material epoxy resin (ul94-v0) weight -- 1.70 -- g environmental specifications item test conditions min. typ. max. units storage humidity -- -- 95 % operating temperature power derating (above 85 ) -40 -- 85 storage temperature -55 -- 125 temp. rise at full load -- 25 -- lead temperature 1.5mm from case for 10 seconds -- -- 300 c cooling free air convection emc specifications emi ce cispr22/en55022 class a external circuit refer to figure1 ems esd iec/en61000-4-2 contact 8kv perf. criteria b
the copyright and authority for the interpretation of the products are reserved by mornsun a_(x)t-1w b/2-2012 page 3 of 5 emc recommended circuit emi recommended external circuit class a (figure 1) recommended external circuit parameters: vin 15v c1 2.2 f/50v 1210 vin 24v c1 4.7 f/50v 1210 cy 100pf/2000v 1206 remarks product bare input of 3.3v 5v 12v can be tested by the class a. product typical curve tolerance envelope graph +10% +5% 50% 100% +2.5% -2.5% -7.5% 120 100 80 60 40 20 0 -40 0 40 85 105120 rated output voltage o u t p u t v o l t a g e ( % ) a c c u r a c y o u t p u t p o w e r p e r c e n t ( % ) output current percent(%) ambient temp.() temperature derating graph safe operating area t y p i c a l l o a d l i n e 70% (nominal input voltage) efficiency vs input voltage curve (full load) 50 53 56 59 62 65 68 71 74 77 80 4.607 4.705 4.805 4.902 5.007 5.104 5.200 5.302 5.402 5.503 input voltage(v) efficiency(%) a0505t-1w efficiency vs input voltage curve (full load) 50 53 56 59 62 65 68 71 74 77 80 22.08 22.56 23.04 23.52 24.02 24.48 24.97 25.44 25.92 26.40 input voltage(v) efficiency(%) a2405t-1w output load vs efficiency curve (vin=vin-nominal) 0 10 20 30 40 50 60 70 80 102030405060708090100 output current percent(%) efficiency(%) a0505t-1w output load vs efficiency curve (vin=vin-nominal) 0 10 20 30 40 50 60 70 80 102030405060708090100 output current percent(%) efficiency(%) a2405t-1w recommended reflow soldering profile 0 50 100 150 200 250 time (sec.) 220c o 10 max sec 260c o 90 max (>220c) sec o t e m p e r a t u r e ( c ) o remark: the curve applies only to the hot air reflow soldering
the copyright and authority for the interpretation of the products are reserved by mornsun a_(x)t-1w b/2-2012 page 4 of 5 outline dimensions recommended footprint & packaging pin 1 2 4 5 7 10 3,6,8,9 nc:no connection a_xt-1w a_t-1w 10 6.50 [0.256] 0.25 [0.010] 0.60 [0.024] 6.25 [0.246] 15.24 [0.600] 10.16[0.400] 2.54[0.100] 7.50 [0.295] 11.20 [0.441] 0.25 [0.010] 1.35 [0.053] 5 max 8.50 [0.335] 14.10 [0.555] 8.90 [0.350] 6.50 [0.256] 7.40 [0.291] 4.30 [0.169] 14.10 [0.555] 1.00 [0.039] 2.54 [0.100] 2.54 [0.100] 2.10 [0.083] 6 7 8 10 9 5 4 3 1 2 7 5 4 1 2 1 5 . 6 5 [ 0 . 6 1 6 ] 2.00 [0.079] 2 4 . 0 0 [ 0 . 9 4 5 ] 1.75 [0.069] 11.50 [0.453] 0.50 [0.020] 7.35 [0.289] 16.00[0.630] 11.60[0.457] ? 100.00 [3.937] 29.40 [1.157] ? 3 3 0 . 0 0 [ 1 2 . 9 9 2 ] 7 8 109 4 3 1 2 6 5 a_t-1w gnd vin 0v -vo +vo nc nc a_xt-1w gnd vin 0v -vo +vo nc no pin ? 1.50 [0.059] ? 1.50 [0.059] ? 21.50 [0.846] ? 13.00 [0.512] a a mechanical dimensions recommended footprint tube outline dimensions reel packing outline dimensions (top view) (side view) 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] l=530mm[20.866inch] devices per tube quantity : 33pcs l=220mm[8.661inch] devices per tube quantity: 12pcs 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. footprint details taping dimension: taping reel dimension: note: unit: mm[inch] general tolerances: 0.50mm[ 0.020inch] per reel of packing quantity: 500pcs inner packaging dimensions: l*w*h=365*350*105mm tube quantity:2000pcs outer packaging dimensions: l*w*h=365*350*105mm tube quantity:4000pcs test configurations input reflected-ripple current test setup input reflected-ripple current is measured with a inductor lin and cin to simulate source impedance. dc cin lin dc load oscilloscope current probe lin(4.7 h) cin(220 f, esr < 1.0 at 100 khz) design & apply considerations 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 (a_(x)t-w2 series).
the copyright and authority for the interpretation of the products are reserved by mornsun a_(x)t-1w b/2-2012 page 5 of 5 2) overload protection under normal operating conditions, the output circuit of these products has no protection against overload. the simplest method is to connect a self-recovery fuse in series at the input end or add a circuit breaker to the circuit. input fuse selection guide 3.3vdc input models 500ma slow-blow type 15vdc input models 200ma slow-blow type 5vdc input models 500ma slow-blow type 24vdc input models 100ma slow-blow type 12vdc input models 200ma slow-blow type 3) recommended circuit if you want to further decrease the input/output ripple, an capacitor filtering network may be connected to the input and output ends of the dc/dc converter, see (figure 2). it should also be noted that the capacitance of 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 recommended capacitance of its filter capacitor sees (table 1). vin gnd +vo 0v dc cin dc cout cout -vo (figure 2) external capacitor table (table 1) vin (vdc) cin ( f) vout (vdc) cout ( f) 5 4.7 5 4.7 12 2.2 9 2.2 24 1 12 2.2 -- -- 15 1 it s not recommended to connect any external capacitor in the application field with less than 0.5 watt output. 4) output voltage regulation and over-voltage protection circuit the simplest device for output voltage regulation, over-voltage and over-current protection is a linear regulator and an capacitor filtering network with overheat protection that is connected to the input or output end in series (figure 3), the recommended capacitance of its filter capacitor sees (table 1), linear regulator based on the actual voltage and current to reasonable selection. vin gnd 0v +vo dc dc -vo reg reg reg (figure 3) 5) no parallel connection or plug and play note: 1. operation under minimum load will not damage the converter; however, they may not meet all specification listed, and that will reduce the life of product. 2. all specifications measured at ta=25 c, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 3. in this datasheet, all the test methods of indications are based on corporate standards. 4. only typical models listed, other models may be different, please contact our technical person for more details. 5. our company offer custom products. 6. specifications subject to change without notice. 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:86-20-38601272 http://www.mornsun-power.com
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