page ?no. ?: ? 1/8 ds \ rs6501 \ 06??? september, ? 20 10 ? www.orister.com rs6501 ? 150khz, ? 40v, ? 2a ? pwm ? buck ? dc/dc ? converter ? ? general ? description ? the? rs6501 ? is ? monolithic ? ic? that ? design ? for ? a? step \ down ? dc/dc ? converter, ? and ? own ? the ? ability ? of ? driving ? a? 2a ? 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 ? th a n ? 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 ? ag ainst ? ov er ? 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: ? 2a? sop \ 8 ? package ? low ? power ? standby ? mode ? thermal \ shunt ? down ? and ? cur r ent \ 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 ? +5.0v vcc_input + c4 220uf/25v 1 2 r1 10 1 2 d1 ds-ss33 1 2 c5 0.1uf 1 2 l1 33uh 1 2 r1 3.1k(0805) 1 2 r2 1k(0805) 1 2 u1 rs6501-ads 1 2 3 4 8 7 6 5 vin output fb sd gnd gnd gnd gnd c2 0.1uf 1 2 + c1 220uf/25v 1 2 c3 1000pf 1 2 ? ? adjustable ? output ? voltage ? version ? ? ? ? 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 ?becaus e ? very ?small ?parametric ?changes ? could ? cause ?the ? device ?not ?to ? meet ?its ?published ? specifications. ?
page ?no. ?: ? 2/8 ds \ rs6501 \ 06??? september, ? 20 10 ? www.orister.com pin? assignments ? sop \ 8(ep) ? ??? ? ? package ? pin ? symbol ? description ? 1 ? vin? regulator ? input ? pin ? 2 ? vout ? regulator ? output ? pin ? 3 ? fb? output ? voltage ? feed ? back ? control ? pin ? 4 ? sd ? on/off ? shutdown ? pin ? sop\8(ep) ? 5, ? 6, ? 7, ? 8 ? ,9 ? gnd ? ground ? pin ? ordering ? information ? device? device? code? rs6501 \ xx? yy ? z ? xx? is ? nominal? output? voltage ? (for ? example, ? ad=adj, ? 33 ? = ? 3.3v, ? 50 ? = ? 5.0v, ? 12 ? = ? 12v). ? y ? is ? package ? designator ? : ? se ? : ? sop \ 8(ep) ? z ? is ? lead ? free ? designator ? : ? p: ? commercial ? standard, ? lead ? (pb) ? free ? and ? phosphorous ? (p) ? free ? package? g: ? green ? (halogen ? free? with ? commercial ? st andar d) ? 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. ?: ? 3/8 ds \ rs6501 \ 06??? september, ? 20 10? 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. ?? max. ? unit ? output ? voltage? v out ? 5v v in 40v, ? 0.2a i load 2a ??? 3.135? 3.3? 3.465 v ? rs6501\ 3.3v? efficiency ? ? v in ? =12v, ? i load =2a ?\? 72 ?\? % ? output ? voltage? v out ? 7v v in 40v, ? 0.2a i load 2a ??? 4.750? 5.0 ??? 5.250 v ? rs6501\ 5.0v? efficiency ? ? v in =12v, ? i load =2a ?\? 79 ?\? % ? output ? voltage? v out ? 15v v in 40v, ? 0.2a i load 2a ? 11.40? 12.0 ??? 12.60 v ? rs6501\ 12v? efficiency ? ? v in =25v, ? i load =2a ?\? 90 ?\? % ? reference ? voltage? v fb ? 4.5v v in 40v, ? 0.2a i load 2a ? v out ? programmed ? for ? 3v? 1.193? 1.230? 1.280 v ? rs6501\ adj ? efficiency ? ? v in =12v, ? i load =2a ?\? 72 ?\? % ? 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 =2a?(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 ? \ 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? jc ? sop \ 8? junction ? to ? case ?\? 15 ?\? o c/w thermal ? resistance ? ja? (note ? 10) sop \ 8? junction ? to ? ambient ?\? 70 ?\? 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? ? \
page ?no. ?: ? 4/8 ds \ rs6501 \ 06??? september, ? 20 10 ? www.orister.com 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 ? diod e, ? 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 ? out g oing ? 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 ? re mo ved ? 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. ?: ? 5/8 ds \ rs6501 \ 06??? september, ? 20 10 ? 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 1 02 03 04 0 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) vin=22v tj=25
page ?no. ?: ? 6/8 ds \ rs6501 \ 06??? september, ? 20 10 ? www.orister.com sop\ 8/ep ? dimension ? ? notes: ? a. all ? linear? dimensions ? are ? in ? millimeters ? (inches).? b. this ? drawing ? is ? subject ? to ? change ? without ? notice. ? c. body ? length ? does ? not? include ? mold ? flash, ? protrusions, ? or ? gate ? burrs.? mold ? flash, ? protrusions, ? or ? gate ? burrs ? shall? not? exceed ? 0.006 ? (0.15) ? per ? end. ? d. body ? width ? dimension ? does ? not? include ? inter\ lead ? flash ? or ? protrusions. ? in t er \ lead ? flash ? and ? protrusions ? shall? not ? exceed ? 0.010 ? (0.25) ? per ? side.? e. the? chamfer ? on ? the ? body ? is ? optional. ? if ? it ? is ? not? present, ? a? visual ? index ? feature ? must ? be ? located ? within ? the ? cross \ hatched ? area. ? f. lead ? dimension ? is ? the ? length ? of ? terminal ? for ? soldering ? to ? a? substrate.? g. the? lead ? width, ? as ? measured ? 0.0 1 4 ? (0.36) ? or ? greater ? above ? the ? seating ? plane, ? shall ? not ? exceed ? a? maximum? value? of ? 0.024 ? (0.61). ? h. lead ? to ? lead ? coplanarity ? shall ? be ? less? than ? 0.004 ? (0.10) ? form ? seating ? plane.? i. falls ? within ? jedec ? ms \ 012 ? variation ? aa. ? ?
page ?no. ?: ? 7/8 ds \ rs6501 \ 06??? september, ? 20 10 ? 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. ?: ? 8/8 ds \ rs6501 \ 06??? september, ? 20 10 ? 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 ? an y ? prod uct ? 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 ? pa te nt, ? 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 ? su pp ort ? 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. ? ? ? ?
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