10 WATT DC-DC CONVERTER OBS-SC/WC series General Description Features 1.PCB Mountable In response to market demand for DISTRIBUTED 2. Small , Light Weight POWER, ETA has developed a new DC/DC converter 3. High Efficiency suitable for PCB mounting. OB-Series AC/DC Switching 4. Cost effective Power Supplies are designed and built to be installed right onto the users printed circuit board like a piece of 5. Output Voltage adjustable patch-work. They are small, light in weight and cost 6. Over Voltage Protection effective. ETA-USA Sub.ETA ELECTRIC IND., CO. LTD. 16170 Vineyard Blvd. 180 Morgan Hill, CA 95037 Phone: (408) 778-2793 Fax: (408) 779-2753 www.eta-usa.com Specifications M odel OBS**SC/WC12 O BS05SC12 OBS12SC12 OBS15SC12 OBS24SC12 OBS22WC12 OBS23WC12 1 0 W A TTS /S IN GLE /2 O U TP U T Input Voltage D C V 12 12 12 12 12 12 Input R ange D C V 8-18 Inrus h C urrent A N ot s pec ified Input R ange at no load m A (ty pic al) 32 37 39 42 44 47 at full load m A (ty pic al) 1042 1097 1040 1046 1097 1041 Line Bac k N ois e m Vp-p (ty pic al) 500 500 500 500 500 500 Efficiency % (ty pic al) *1 80 82 84 86 82 84 O utput Voltage V 51215 24 +12 -12 +15 -15 O utput C urrent A 2 0.9 0.70 0.45 0.045-0.45 0.035-0.35 Voltage Tolerance +/- mV (maximum) *2 100 240 300 480 240 240 300 300 Ripple and Noise mVp-p (maximum) *3 100 Regulation a.Static Line Regulation mV (maximum) 25 60 75 120 60 75 b.D ynam ic Line R egulation + /- m V (m axim um ) *4 100 100 100 100 200 300 c.Static Load R egulation m V (m axim um ) *5 25 60 75 120 1500 1500 750 750 m V (m axim um ) *6 m V (m axim um ) *7 60 75 o d.T em perature C oeffic ient *8 0.03% / Cmaximum) e.D rift m V (m ax im um ) *9 40 75 90 135 75 90 f.D ynam ic Load R egulation m V (m axim um ) *10 200 400 300 400 300 400 g.R ec ov ery T im e *4 ,*10 10mS(typical) R is e up tim e 10m S(ty pic al) at rated input/output H old up tim e N ot s pec ified O v erc urrent Protec tion F oldbac k /C urrent Lim iting w ith autom atic rec ov ery at dis c ontinuous s hort c irc uit c onditions O v erv oltage Protec tion N ot av ailable R em ote Senc e N ot av ailable T rim m ing of output v oltage m V *11 +250 +250 +350 +650 m V *12 -250 -900 -1600 -4000 Input F us e Ins talled o O perating T em perature -20 to 71 C o o o o (derating) 3.5% / C(50 C to 71 C ) (out of w arranty >= 71 C) O perating H um idity 20-90% /RH(non-condensing) o Storage T em perature -20 to +85 C Storage H um idity 20 to 90% /R H (non-c ondens ing) W iths tanding Voltage Prim ary -Sec ondary AC 500V for 1m inute Is olation R es is tanc e Prim ary -Sec ondary 50M (m inim um ) by D C 500V ins ulation tes ter Capacitance(input-output) pF (typical) 4400 2 Vibration 5-10H z:10m m double am plitude,10-55H z:19.6m /s,20m inutes period for 60m inutes each along X,Y,Z axes(non-operating) 2 Shock 294m/s Cooling Convection W eight (ty pic al) open board ty pe:14g o *1 at 25 C and rated input/output *2 O BS**W C 12 s atis fies the abov e-m entioned s pec ific ations at the s am e load c onditions on both outputs *3 m eas ured by a probe at the output c onnec tor at a 0 to 100M H z bandw idth *4 w hen input v oltage c hanged from 8V to 18V rapidly at rated input *5 w hen output c urrent c hanged from 0m A to rated c urrent k eeping the c urrent of other output below m inim um rated c urrent at rated input *6 w hen output c urrent c hanged from m inim um rated c urrent to rated c urrent k eeping the c urrent of other output abov e m inim um rated c u *7 output c urrent of both outputs c hanged from 0m A to rated c urrent identic ally at rated input o *8 at -20 to +71 C o *9 for 7hour period after 1hour w arm -up at 25 C and rated input/output *10 w hen output c urrent c hanged from 25% of rated c urrent to 75% rapidly at rated input *11 to reduc e output v oltage,put a res is tor betw een pi0 and trim m ing pin *12 to inc reas e output v oltage,put a res is tor betw een pi and trim m ing pin ETA-USA Sub.ETA ELECTRIC IND., CO. LTD. 16170 Vineyard Blvd. 180 Morgan Hill, CA 95037 Phone: (408) 778-2793 Fax: (408) 779-2753 www.eta-usa.com