page ? no. ? : ? 1/9 ds \ rs2596 \ 07 ??? september, ? 2009 ? www.orister.com rs2596 ? 150khz, ? 3a ? pwm ? buck ? dc/dc ? converter ? ? general ? description ? the ? rs2596 ? is ? monolithic ? ic ? that ? design ? for ? a ? step \ down ? dc/dc ? converter, ? and ? own ? the ? ability ? of ? driving ? a ? 3a ? load ? without ? additional ? transistor ? component. ? ? the ? output ? version ? included ? 3.3v, ? 5v, ? 12v ? and ? an ? adjustable ? type. ? it ? operates ? at ? a ? switching ? frequency ? of ? 150khz ? thus ? allowing ? smaller ? sized ? filter ? components ? than ? what ? would ? be ? needed ? with ? lower ? frequency ? switching ? regulators. ? other ? features ? include ? a ? guaranteed ? 4% ? tolerance ? on ? output ? voltage ? under ? specified ? input ? voltage ? and ? output ? load ? conditions, ? and ? 15% ? on ? the ? oscillator ? frequency. ? regarding ? protected ? function, ? thermal ? shutdown ? is ? to ? prevent ? over ? temperature ? operating ? from ? damage, ? and ? current ? limit ? is ? against ? over ? current ? operating ? of ? the ? output ? switch. ? features ? applications ? 3.3v, ? 5v, ? 12v ? and ? adjustable ? adjustable ? version ? output ? voltage ? range: ? 1.23 \ 37v ? 4% ? max ? over ? line ? and ? load ? conditions ? 150khz ? 15% ? fixed ? switching ? frequency ? ttl ? shutdown ? capability ? operating ? voltage ? can ? be ? up ? to ? 40v ? output ? load ? current: ? 3a ? to220 \ 5 ? and ? to263 \ 5 ? packages ? low ? power ? standby ? mode ? thermal \ shunt ? down ? and ? current \ limit ? protection ? built \ in ? switching ? a ? transistor ? on ? chip, ? requires ? only ? 4 ? external ? components ? simple ? high \ efficiency ? step \ down ? regulator ? positive ? to ? negative ? converter ? on \ card ? switching ? regulators ? application ? circuits ? ? adjustable ? output ? voltage ? versions ? ? ? ? ? ? this ? integrated ? circuit ? can ? be ? damaged ? by ? esd. ? orister ? corporation ? recommends ? that ? all ? integrated ? circuits ? be ? handled ? with ? appropriate ? precautions. ? failure ? to ? observe ? proper ? handling ? and ? installation ? procedures ? can ? cause ? damage. ? ? esd ? damage ? can ? range ? from ? subtle ? performance ? degradation ? to ? complete ? device ? failure. ? precision ? integrated ? circuits ? may ? be ? more ? susceptible ? to ? damage ? because ? very ? small ? parametric ? changes ? could ? cause ? the ? device ? not ? to ? meet ? its ? published ? specifications. ?
page ? no. ? : ? 2/9 ds \ rs2596 \ 07 ??? september, ? 2009 ? www.orister.com pin ? assignments ? ?? to \ 263 \ 5 ? to \ 220 \ 5 ? ?? ? ? ?? ? package ? pin ? symbol ? description ? 1 ? vin ? regulator ? input ? pin ? 2 ? vout ? regulator ? output ? pin ? 3, ? 6 ? gnd ? ground ? pin ? 4 ? fb ? output ? voltage ? feed ? back ? control ? pin ? to \ 263 \ 5 ? 5 ? sd ? on/off ? shutdown ? pin ? ? package ? pin ? symbol ? description ? 1 ? vin ? regulator ? input ? pin ? 2 ? vout ? regulator ? output ? pin ? 3, ? 6 ? gnd ? ground ? pin ? 4 ? fb ? output ? voltage ? feed ? back ? control ? pin ? to \ 220 \ 5 ? 5 ? sd ? on/off ? shutdown ? pin ? ordering ? information ? device ? device ? code ? rs2596 \ xx ? y ? z ? xx ? is ? nominal ? output ? voltage ? (for ? example, ? ad=adj, ? 33 ? = ? 3.3v, ? 50 ? = ? 5.0v, ? 12 ? = ? 12v). ? y ? is ? package ? designator ? : ? u ? : ? to \ 263 \ 5 ? e ? : ? to \ 220 \ 5 ? z ? is ? lead ? free ? designator ? : ? p: ? commercial ? standard, ? lead ? (pb) ? free ? and ? phosphorous ? (p) ? free ? package ? g: ? green ? (halogen ? free ? with ? commercial ? standard) ? block ? diagram ? current source bias 1.235v reference 2.5v regulator start up comp + - comp + - 200mv 220mv driver thermal limit 150khz osc. comp + - amp + - output gnd vin sd fb r1=2.5k r2 comp + - current limit ++ r 3a switch
page ? no. ? : ? 3/9 ds \ rs2596 \ 07 ??? september, ? 2009 ? www.orister.com absolute ? maximum ? ratings ? (note1) ? parameter ? symbol ? value ? unit ? supply ? voltage ? v cc ? 40 ? v ? on/off ? pin ? input ? voltage ? v sd ?\ 0.3~+25 ? v ? feedback ? pin ? voltage ? v fb ?\ 0.3~+25 ? v ? output ? voltage ? to ? ground ? v out ?\ 1 ? v ? power ? dissipation ? p d ? internally ? limited ? w ? operating ? temperature ? t opr ? 0~+70 ? o c ? storage ? temperature ? t stg ?\ 65~+150 ? o c ? operating ? junction ? temperature ? range ? t j ?\ 40~+125 ? o c ? operating ? voltage ? v op ? +4.5~+40 ? v ? electrical ? characteristics ? (continued) ? specifications ? with ? boldface ? type ? apply ? over ? for ? full ? operating ? temperature ? range, ? the ? other ? type ? are ? for ? tj=25oc (note ? 2) ? part ? no. ? parameter ? symbol ? conditions ? min. ? typ. ? (note3) ? max. ? (note4) unit output ? voltage ? v out ? 5v v in 40v, ? 0.2a i load 3a ? 3.168 ?? 3.135 ? 3.3 ? 3.342 ? 3.465 v ? rs2596 \ 3.3v ? efficiency ? ? v in ? =12v, ? i load =3a ?\? 72 ?\? % ? output ? voltage ? v out ? 7v v in 40v, ? 0.2a i load 3a ? 4.800 ?? 4.750 ? 5.0 ? 5.200 ?? 5.250 v ? rs2596 \ 5.0v ? efficiency ? ? v in =12v, ? i load =3a ?\? 79 ?\? % ? output ? voltage ? v out ? 15v v in 40v, ? 0.2a i load 3a ? 11.52 ?? 11.40 ? 12.0 ? 12.48 ?? 12.60 v ? rs2596 \ 12v ? efficiency ? ? v in =25v, ? i load =3a ?\? 90 ?\? % ? reference ? voltage ? v fb ? 4.5v v in 40v, ? 0.2a i load 3a ? v out ? programmed ? for ? 3v ? 1.193 ? 1.230 ? 1.267 1.280 v ? rs2596 \ adj ? efficiency ? ? v in =12v, ? i load =3a ?\? 72 ?\? % ?
page ? no. ? : ? 4/9 ds \ rs2596 \ 07 ??? september, ? 2009 ? www.orister.com all ? output ? voltage ? versions ? electrical ? characteristics ? specifications ? with ? boldface ? type ? apply ? over ? for ? full ? operating ? temperature ? range, ? the ? other ? type ? are ? for ? t j =25 o c ? (unless ? otherwise ? specified, ? v in =12v ? for ? the ? 3.3v, ? 5v, ? and ? adjustable ? version ? and ? v in =24v ? for ? the ? 12v ? version, ? i load =500ma) ? parameter ? symbol test ? condition ? min. ? typ. ? max. unit device ? parameters ? feedback ? bias ? current ? i b ? adjustable ? version ? only, ? v fb =1.3v \? 40 ? 50 ??? 100 ? na ? oscillator ? frequency ? f o ? (note ? 5) ? 127 ?? 110 ? 150 ? 173 ?? 173 ? khz ? saturation ? voltage ? v sat ? i out =3a ? (note ? 6,7) ?\? 1.16 ? 1.4 ??? 1.5 ? v ? max. ? duty ? cycle ? (on) ? min. ? duty ? cycle ? (off) ? dc ? (note ? 7) ? ?????????? (note ? 8) ? \? 100 ?? 0 ? \? % ? current ? limit ? i cl ? peak ? current ? (note ? 6,7) ? 3.6 ?\? 5.5 ??? 6.9 ? a ? output ? leakage ? current ? i l ? output=0v ? (note ? 6,8) ?\?\? 50 ? ua ? quiescent ? current ? i q ? (note ? 8) ?\? 5 ? 30 ? ma ? standby ? quiescent ? current ? i stby ? on/off ? pin=5v ? (note ? 9) ?\? 85 ? 200 ?? 300 ? ua ? to220 \ 5l \? 2.5 ?\? jc ? to263 \ 5l junction ? to ? case ? \? 3.5 ?\? o c/w to220 \ 5l \? 28 ?\? thermal ? resistance ? ja(note ? 10) ? to263 \ 5l junction ? to ? ambient \? 30 ?\? o c/w on/off ? control ? v ih ? low ? (regulator ? on) ?\? 0.6 ? on/off ? pin ? logic ? input ? threshold ? voltage ? v il ? high ? (regulator ? off) ? 2.0 ? 1.4 ? \? v ? i ih ? v logic =2.5v ? (regulator ? off) ?\? 6 ? 15 ? on/off ? pin ? input ? current ? i il ? v logic =0.5v ? (regulator ? on) ?\? 0.02 ? 5 ? ua ? ? note: ? 1. absolute ? maximum ? ratings ? indicate ? limits ? beyond ? which ? damage ? to ? the ? device ? may ? occur. ? operating ? ratings ? indicate ? conditions ? for ? which ? the ? device ? is ? intended ? to ? be ? functional, ? but ? do ? not ? guarantee ? specific ? performance ? limits. ? for ? guaranteed ? specifications ? and ? test ? conditions, ? see ? the ? electrical ? characteristics. ?? 2. external ? components ? such ? as ? the ? catch ? diode, ? inductor, ? input ? and ? output ? capacitors, ? and ? voltage ? programming ? resistors ? can ? affect ? switching ? regulator ? system ? performance. ? 3. typical ? numbers ? are ? at ? 25 ? o c ? and ? represent ? the ? most ? likely ? norm. ? 4. all ? limits ? guaranteed ? at ? room ? temperature ? (standard ? type ? face) ? and ? at ? temperature ? extremes ? (bold ? type ? face). ? all ? room ? temperature ? limits ? are ? 100% ? production ? tested. ? all ? limits ? at ? temperature ? extremes ? are ? guaranteed ? via ? correlation ? using ? standard ? statistical ? quality ? control ? (sqc) ? methods. ? all ? limits ? are ? used ? to ? calculate ? average ? outgoing ? quality ? level ? (aoql). ? 5. the ? switching ? frequency ? is ? reduced ? when ? the ? second ? stage ? current ? limit ? is ? activated. ? 6. no ? diode, ? inductor ? or ? capacitor ? connected ? to ? output ? pin. ? 7. feedback ? pin ? removed ? from ? output ? and ? connected ? to ? 0v ? to ? force ? the ? output ? transistor ? switch ? on. ? 8. feedback ? pin ? removed ? from ? output ? and ? connected ? to ? 12v ? for ? the ? 3.3v, ? 5v, ? adj. ? version, ? and ? 15v ? for ? the ? 12v ? version, ? to ? force ? the ? output ? transistor ? switch ? off. ? 9. v in =40v. ? 10. junction ? to ? ambient ? thermal ? resistance. ? (with ? copper ? area ? of ? approximately ? 3in 2 ) ? ? ? ? ? ? ? ? ? ? ?
page ? no. ? : ? 5/9 ds \ rs2596 \ 07 ??? september, ? 2009 ? www.orister.com characteristics ? curve ? ? ? ? ? ? ? ? ? ? normalized output voltage -1.5 -1 -0.5 0 0.5 1 1.5 0 25 50 75 100 125 150 175 junction temperature ( o c) output voltage change (%) .. v in =12v i load =200ma shutdown quiescent current 0 20 40 60 80 100 120 140 160 0 10203040 supply voltage (v) current (ua) v on /v off =5v t j =25 o c switch current limit 5.20 5.30 5.40 5.50 5.60 5.70 5.80 5.90 6.00 0 25 50 75 100 125 150 junction temperature ( o c) switch current limit (a ) v in =12v v out =5v switch saturation voltage 0.80 0.90 1.00 1.10 1.20 1.30 01234 switch current (a) saturation voltage (v) v in =12v t j =25 o c on/off pin current (sinking) 0 2 4 6 8 10 12 0 5 10 15 20 25 30 on/off pin voltage (v) current (ua) v in =40v t j =25 o c
page ? no. ? : ? 6/9 ds \ rs2596 \ 07 ??? september, ? 2009 ? www.orister.com to \ 263 \ 5 ? dimension ? ? notes: ? a. all ? linear ? dimensions ? are ? in ? inches ? (millimeters). ? b. this ? drawing ? is ? subject ? to ? change ? without ? notice. ? c. body ? dimensions ? do ? not ? include ? mold ? flash ? or ? protrusion. ? mold ? flash ? or ? protrusion ? not ? to ? exceed ? 0.005 ? (0.13) ? per ? side. ? d. falls ? within ? jedec ? to \ 263 ? variation ? ba. ? except ? minimum ? lead ? thickness, ? maximum ? seating ? height, ? and ? minimum ? body ? length. ?
page ? no. ? : ? 7/9 ds \ rs2596 \ 07 ??? september, ? 2009 ? www.orister.com to \ 220 \ 5 ? dimension ? ? ? notes: ? a. all ? linear ? dimensions ? are ? in ? inches ? (millimeters). ? b. this ? drawing ? is ? subject ? to ? change ? without ? notice. ? c. all ? lead ? dimensions ? apply ? before ? solder ? dip. ? d. the ? center ? lead ? is ? in ? electrical ? contact ? with ? the ? tab. ? e. the ? chamfer ? is ? optional. ? f. thermal ? pad ? contour ? optional ? within ? these ? dimensions. ? ? ? ? ? ? ? ? ?
page ? no. ? : ? 8/9 ds \ rs2596 \ 07 ??? september, ? 2009 ? www.orister.com soldering ? methods ? for ? orister?s ? products ? 1. ? storage ? environment: ? temperature=10 o c~35 o c ? humidity=65%15% ? 2. ? reflow ? soldering ? of ? surface \ mount ? devices ? ? profile ? feature ? sn \ pb ? eutectic ? assembly ? pb \ free ? assembly ? average ? ramp \ up ? rate ? (t l ? to ? t p ) ? <3 o c/sec ? <3 o c/sec ? preheat ? \? temperature ? min ? (ts min ) ? \? temperature ? max ? (ts max ) ? \? time ? (min ? to ? max) ? (ts) ? ? 100 o c ? 150 o c ? 60~120 ? sec ? ? 150 o c ? 200 o c ? 60~180 ? sec ? tsmax ? to ? t l ? ? \? ramp \ up ? rate ? ? <3 o c/sec ? ? <3 o c/sec ? time ? maintained ? above: ? \? temperature ? (t l ) ? \? time ? (t l ) ? ? 183 o c ? 60~150 ? sec ? ? 217 o c ? 60~150 ? sec ? peak ? temperature ? (t p ) ? 240 o c ? +0/ \ 5 o c ? 260 o c ? +0/ \ 5 o c ? time ? within ? 5 o c ? of ? actual ? peak ? temperature ? (t p ) ? 10~30 ? sec ? 20~40 ? sec ? ramp \ down ? rate ? <6 o c/sec ? <6 o c/sec ? time ? 25 o c ? to ? peak ? temperature ? <6 ? minutes ? <8 ? minutes ? 3. ? flow ? (wave) ? soldering ? (solder ? dipping) ? products ? peak ? temperature ? dipping ? time ? pb ? devices. ? 245 o c ? 5 o c ? 5sec ? 1sec ? pb \ free ? devices. ? 260 o c ? +0/ \ 5 o c ? 5sec ? 1sec ? ? ? ? ? ? figure ? 1: ? temperature ? profile ? t p t l ramp-down ramp-up ts max ts min critical zone t l to t p t s preheat t l t p 25 t 25 o c to peak time temperature
page ? no. ? : ? 9/9 ds \ rs2596 \ 07 ??? september, ? 2009 ? www.orister.com ? ? important ? notice: ? ? ? ? orister ? corporation ? orister ? cannot ? assume ? responsibility ? for ? use ? of ? any ? circuitry ? other ? than ? circuitry ? entirely ? embodied ? in ? an ? orister ? product. ? no ? circuit ? patent ? licenses, ? copyrights, ? mask ? work ? rights, ? or ? other ? intellectual ? property ? rights ? are ? implied. ? ? orister ? reserves ? the ? right ? to ? make ? changes ? to ? their ? products ? or ? specifications ? or ? to ? discontinue ? any ? product ? or ? service ? without ? notice. ? except ? as ? provided ? in ? orister?s ? terms ? and ? conditions ? of ? sale, ? orister ? assumes ? no ? liability ? whatsoever, ? and ? orister ? disclaims ? any ? express ? or ? implied ? warranty ? relating ? to ? the ? sale ? and/or ? use ? of ? orister ? products ? including ? liability ? or ? warranties ? relating ? to ? fitness ? for ? a ? particular ? purpose, ? merchantability, ? or ? infringement ? of ? any ? patent, ? copyright ? or ? other ? intellectual ? property ? right. ? in ? order ? to ? minimize ? risks ? associated ? with ? the ? customer?s ? applications, ? adequate ? design ? and ? operating ? safeguards ? must ? be ? provided ? by ? the ? customer ? to ? minimize ? inherent ? or ? procedural ? hazards. ? testing ? and ? other ? quality ? control ? techniques ? are ? utilized ? to ? the ? extent ? orister ? deems ? necessary ? to ? support ? this ? warranty. ? specific ? testing ? of ? all ? parameters ? of ? each ? device ? is ? not ? necessarily ? performed. ?? ? orister ? and ? the ? orister ? logo ? are ? trademarks ? of ? orister ? corporation. ? all ? other ? brand ? and ? product ? names ? appearing ? in ? this ? document ? are ? registered ? trademarks ? or ? trademarks ? of ? their ? respective ? holders. ? ? ? ?
|
