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page ? no. ? : ? 1/11 ds \ rs7300 \ 14 ??? september, ? 2009 ? www.orister.com rs7300 ? 600ma ? adjustable ? & ? fixed ? voltage ? ldo ? linear ? regulator ? ? general ? description ? the ? rs7300 ? series ? is ? a ? low \ dropout ? linear ? regulator ? that ? operates ? in ? the ? input ? voltage ? range ? from ? +2.4v ? to ? +7.0v ? and ? delivers ? 600ma ? output ? current. ? ? the ? rs7300 ? is ? available ? in ? two ? types, ? fixed ? output ? voltage ? type ? and ? adjustable ? output ? voltage ? type. ? the ? fixed ? output ? voltage ? type ? is ? preset ? at ? an ? internally ? trimmed ? voltage ? 1.8v, ? 2.5v, ? or ? 3.3v. ? other ? options ? 1.0v, ? 1.2v, ? 1.5v, ? 1.8v, ? 2.0v, ? 2.85v, ? 3.0v, ? 3.3v, ? 3.6v ? and ? 5.0v ? are ? available ? by ? special ? order ? only. ? the ? output ? voltage ? range ? of ? the ? adjustable ? type ? is ? from ? 1.25v ? to ? 5v. ? ? the ? rs7300 ? (adj ? type) ? consists ? of ? a ? 1.25v ? bandgap ? reference, ? an ? error ? amplifier, ? and ? a ? p \ channel ? pass ? transistor. ? other ? features ? include ? short \ circuit ? protection ? and ? thermal ? shutdown ? protection. ? ? the ? rs7300 ? (fixed ? type) ? consists ? of ? a ? 0.95v ? bandgap ? reference, ? an ? error ? amplifier, ? and ? a ? p \ channel ? pass ? transistor. ? other ? features ? include ? short \ circuit ? protection ? and ? thermal ? shutdown ? protection. ? the ? rs7300 ? series ? devices ? are ? available ? in ? sot \ 223, ? sot \ 89 ? and ? sot \ 23 ? packages. ? features ? applications ? operating ? voltage ? range +2.4v ? to ? +7.0v ? output ? voltages +1.0v ? to ? +5.0v ? (0.1v ? step) ? (fixed), ? +1.25v ? to ? +5.0v ? (adj ? type) ? dropout ? voltage 500mv@600ma ? (fixed) ? fast ? response ? in ? power \ on ? (fixed ? voltage ? only) ? low ? current ? consumption 60 a ? (typ.) ? 2% ? output ? voltage ? accuracy ? (special ? 1% ? highly ? accurate), ? v out R 1.8v ? low ? esr ? capacitor ? compatible ? high ? ripple ? rejection 55db ? (typ.) ? output ? current ? limit ? protection 1.0a ? (typ.) ? short ? circuit ? protection 200ma ? (typ.) ? thermal ? overload ? shutdown ? protection ? sot \ 223, ? sot \ 89 ? and ? sot \ 23 ? packages ? rohs ? compliant ? and ? 100% ? lead ? (pb) \ free ? and ? green ? (halogen ? free ? with ? commercial ? standard) ? battery \ powered ? equipments ? graphic ? card, ? peripheral ? card ? pcmcia ? & ? new ? card ? mini ? pci ? & ? pci \ express ? cards ? digital ? still ? camera ? cdma/gsm ? cellular ? handsets ? laptop, ? palmtops, ? notebook ? computers ? portable ? information ? application ? application ? circuits ? ?
page ? no. ? : ? 2/11 ds \ rs7300 \ 14 ??? september, ? 2009 ? www.orister.com ? ? 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. ? pin ? assignments ? ??? sot \ 23 ? sot \ 89 ? sot \ 223 ? ??? ? ? ? ??? ? package ? pin ? symbol ? description ? 1 ? vin ? regulator ? input ? pin ? 2 ? vout ? regulator ? output ? pin ? sot \ 23 ? 3 ? gnd/adj ? ground ? pin ? or ? adj ? pin ? ? package ? pin ? symbol ? description ? 1 ? gnd/adj ? ground ? pin ? or ? adj ? pin ? 2 ? vin ? regulator ? input ? pin ? sot \ 89 ? 3 ? vout ? regulator ? output ? pin ? ? package ? pin ? symbol ? description ? 1 ? vout ? regulator ? output ? pin ? 2 ? gnd/adj ? ground ? pin ? or ? adj ? pin ? sot \ 223 ? 3 ? vin ? regulator ? input ? pin ? ordering ? information ? device ? device ? code ? rs7300 \ xx ? yy ? z ? xx ? is ? nominal ? output ? voltage ? (for ? example, ? ad=adj, ? 15 ? = ? 1.5v, ? 33 ? = ? 3.3v, ? 285 ? = ? 2.85v). ? yy ? is ? package ? designator ? : ? n ? : ? sot \ 23 ? m ? : ? sot \ 89 ? sj ? : ? sot \ 223 ? z ? is ? lead ? free ? designator ? : ? p: ? commercial ? standard, ? lead ? (pb) ? free ? and ? phosphorous ? (p) ? free ? package ? g: ? green ? (halogen ? free ? with ? commercial ? standard) ? ? ? ? ? ?
page ? no. ? : ? 3/11 ds \ rs7300 \ 14 ??? september, ? 2009 ? www.orister.com block ? diagram ? ? ? absolute ? maximum ? ratings ? parameter ? symbol ? ratings ? units input ? voltage ? v in ? to ? gnd ? v in ? 9.0 ? v ? output ? current ? limit, ? i (limit) ? i limit ? 1.0 ? a ? junction ? temperature ? t j ? +155 ? o c ? sot \ 89 ? 180 ? sot \ 223 ? 155 ? thermal ? resistance ? sot \ 23 ? ja ? 260 ? o c/w sot \ 89 ? 550 ? sot \ 223 ? 900 ? power ? dissipation ? sot \ 23 ? p d ? 400 ? mw ? operating ? ambient ? temperature ? t opr ?\ 40 ? ~ ? +85 ? o c ? storage ? temperature ? t stg ?\ 55~+150 ? o c ? lead ? temperature ? (soldering, ? 10sec) ?\? +260 ? o c ? notes ? 1 the ? power ? dissipation ? values ? are ? based ? on ? the ? condition ? that ? junction ? temperature ? t j ? and ? ambient ? temperature ? t a ? difference ? is ? 100c. ? 2 stresses ? beyond ? those ? listed ? under ? ?absolute ? maximum ? ratings? ? may ? cause ? permanent ? damage ? to ? the ? device. ? these ? are ? stress ? ratings ? only, ? and ? function ? operation ? of ? the ? device ? at ? these ? or ? any ? other ? conditions ? beyond ? those ? indicated ? under ? ?recommended ? operating ? conditions? ? is ? not ? implied. ? exposure ? to ? absolute \ maximum ? ?rated ? conditions ? for ? extended ? periods ? may ? affect ? device ? reliability. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
page ? no. ? : ? 4/11 ds \ rs7300 \ 14 ??? september, ? 2009 ? www.orister.com electrical ? characteristics ? (t a =25c, ? v in =5.0v ? unless ? otherwise ? specified) ? symbol ? parameter ? conditions ? min. ? typ. ? max. unit ? v in ? input ? voltage ?\? 2.4 ?\? 7.0 ? v ? v in =v out +1.0v, ? i out =1ma, ? v out R 1.8v ? \ 2% ? +2% ? v ? fixed ? type ? v in =v out +1.0v, ? i out =1ma, ? v out 1.8v, ? v in 2.4v ? \ 35 ? +35 ? mv ? v in =v out +1.2v, ? i out =1ma, ? v out R 1.8v ? \ 2% ? +2% ? v ? v out ? output ? voltage ? adj ? type ? v in =v out +1.2v, ? i out =1ma, ? v out 1.8v, ? v in 2.4v ? \ 50 ? v out ? +50 ? mv ? i max ? output ? current ? (see ? note) ? v out +1.0v Q v in Q 7.0v, ? v out R 2.4v ? 600 ?\? \? ma ? i out =100ma, ? v out >3.0v ?\? 100 ?\? dropout ? voltage ? (fixed ? type) ? i out =600ma, ? v out >3.0v ?\? 500 ?\? v drop ? dropout ? voltage ? (adj ? type) ? i out =600ma, ? v out >3.0v ?\? 900 ?\? mv ? v out +1.0v Q v in Q 7v, ? i out =1ma ? (fixed ? type) ? \? 0.2 ? 0.3 ? v line ? line ? regulation ? v out +1.2v Q v in Q 5v, ? i out =1ma, ? v in R 2.8v ? \? \? 0.2 ? %/v ? v load ? load ? regulation ? v in =v out +1v, ? 1ma Q i out Q 600ma ? \? 0.01 ? 0.02 ? %/ma i q ? ground ? pin ? current ? i load =0ma ? to ? 600ma, ? v in =v out +1.0v ?\? 60 ?\? ua ? i adj ? adj ? pin ? current ? i load =0ma ? to ? 600ma, ? v in =v out +1.0v ?\? 60 ?\? ua ? psrr ? ripple ? rejection ? i out =30ma, ? f=1khz, ? c out =3.3uf ?\? 55 ?\? db ? e n ? output ? noise ? i out =100ma ? , ? f=1khz, ? c out =3.3uf ?\? 40 ?\? uv (rms) t sd ? thermal ? shutdown ? temperature ?\? \? 150 ?\? o c ? t hys ? thermal ? shutdown ? hysteresis ?\? \? 20 ?\? o c ? note measured ? using ? a ? double ? sided ? board ? with ? 1? ? x ? 2? ? square ? inches ? of ? copper ? area ? connected ? to ? the ? gnd ? pins ? for ? ?heat ? spreading?. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
page ? no. ? : ? 5/11 ds \ rs7300 \ 14 ??? september, ? 2009 ? www.orister.com detail ? description ? the ? rs7300 ? is ? a ? low \ dropout ? linear ? regulator. ? the ? device ? provides ? preset ? 1.8v, ? 2.5v ? and ? 3.3v ? output ? voltages ? for ? output ? current ? up ? to ? 600ma. ? adjustable ? output ? voltage ? and ? other ? mask ? options ? for ? special ? output ? voltages ? are ? also ? available. ? as ? illustrated ? in ? function ? block ? diagram, ? it ? consists ? of ? a ? 1.25v ? bandgap ? (fixed ? voltage ? type ? is ? 0.95v) ? reference, ? an ? error ? amplifier, ? a ? p \ channel ? pass ? transistor ? and ? an ? internal ? feedback ? voltage ? divider. ? ? the ? bandgap ? reference ? for ? adjustable ? voltage ? type ? is ? connected ? to ? the ? error ? amplifier, ? which ? compares ? this ? reference ? with ? the ? feedback ? voltage ? and ? amplifies ? the ? voltage ? difference. ? if ? the ? feedback ? voltage ? is ? lower ? than ? the ? reference ? voltage, ? the ? pass ? transistor ? gate ? is ? pulled ? lower, ? which ? allows ? more ? current ? to ? pass ? to ? the ? output ? pin ? and ? increases ? the ? output ? voltage. ? if ? the ? feedback ? voltage ? is ? too ? high, ? the ? pass ? transistor ? gate ? is ? pulled ? up ? to ? decrease ? the ? output ? voltage. ? ? the ? output ? voltage ? is ? feed ? back ? through ? an ? internal ? resistive ? divider ? (or ? external ? resistive ? divider ? for ? adjustable ? output ? voltage ? type) ? connected ? to ? v out ? pin. ? additional ? blocks ? include ? an ? output ? current ? limiter, ? thermal ? sensor, ? and ? shutdown ? logic. ? ? internal ? p \ channel ? pass ? transistor ? the ? rs7300 ? features ? a ? p \ channel ? mosfet ? pass ? transistor. ? unlike ? similar ? designs ? using ? pnp ? pass ? transistors, ? p \ channel ? mosfets ? require ? no ? base ? drive, ? which ? reduces ? quiescent ? current. ? pnp \ based ? regulators ? also ? waste ? considerable ? current ? in ? dropout ? when ? the ? pass ? transistor ? saturates, ? and ? use ? high ? base \ drive ? currents ? under ? large ? loads. ? ? the ? rs7300 ? does ? not ? suffer ? from ? these ? problems ? and ? consumes ? only ? 60 a ? (typ.) ? of ? current ? consumption ? under ? heavy ? loads ? as ? well ? as ? in ? dropout ? conditions. ? ? output ? voltage ? selection ? for ? fixed ? voltage ? type ? of ? rs7300, ? the ? output ? voltage ? is ? preset ? at ? an ? internally ? trimmed ? voltage. ? the ? first ? two ? digits ? of ? part ? number ? suffix ? identify ? the ? output ? voltage ? (see ? ordering ? information). ? for ? example, ? the ? rs7300 \ 33 ? has ? a ? preset ? 3.3v ? output ? voltage. ? ? for ? adjustable ? voltage ? type ? of ? rs7300, ? the ? output ? voltage ? is ? set ? by ? comparing ? the ? feedback ? voltage ? at ? adjust ? terminal ? to ? the ? internal ? bandgap ? reference ? voltage. ? the ? reference ? voltage ? v ref ? is ? 1.25v. ? the ? output ? voltage ? is ? given ? by ? the ? equation: ? ? v out =v ref ? x ? (1+r2/r1)+i adj ? x ? r2 ? ? current ? limit ? the ? rs7300 ? also ? includes ? a ? fold ? back ? current ? limiter. ? it ? monitors ? and ? controls ? the ? pass ? transistor?s ? gate ? voltage, ? estimates ? the ? output ? current, ? and ? limits ? the ? output ? current ? within ? 1.0a. ? ? thermal ? overload ? protection ? thermal ? overload ? protection ? limits ? total ? power ? dissipation ? in ? the ? rs7300. ? when ? the ? junction ? temperature ? exceeds ? t j =+150c, ? a ? thermal ? sensor ? turns ? off ? the ? pass ? transistor, ? allowing ? the ? ic ? to ? cool ? down. ? the ? thermal ? sensor ? turns ? the ? pass ? transistor ? on ? again ? after ? the ? junction ? temperature ? cools ? down ? by ? 20c, ? resulting ? in ? a ? pulsed ? output ? during ? continuous ? thermal ? overload ? conditions. ? ? thermal ? overload ? protection ? is ? designed ? to ? protect ? the ? rs7300 ? in ? the ? event ? of ? fault ? conditions. ? for ? continuous ? operation, ? the ? absolute ? maximum ? operating ? junction ? temperature ? rating ? of ? t j =+125c ? should ? not ? be ? exceeded. ? ? operating ? region ? and ? power ? dissipation ? maximum ? power ? dissipation ? of ? the ? rs7300 ? depends ? on ? the ? thermal ? resistance ? of ? the ? case ? and ? circuit ? board, ? the ? temperature ? difference ? between ? the ? die ? junction ? and ? ambient ? air, ? and ? the ? rate ? of ? airflow. ? the ? power ? dissipation ? across ? the ? devices ? is ? p ? = ? i out ? x ? (v in \ v out ). ? the ? resulting ? maximum ? power ? dissipation ? is: ? ? ja a j ca jc a j max t t t t p ) ( ) ( ? = + ? = ? ? where ? (t j \ t a ) ? is ? the ? temperature ? difference ? between ? the ? rs7300 ? die ? junction ? and ? the ? surrounding ? air, ? jc ? is ? the ? thermal ? resistance ? of ? the ? package ? chosen, ? and ? ca ? is ? the ? thermal ? resistance ? through ? the ? printed ? circuit ? board, ? copper ? traces ? and ? other ? materials ? to ? the ? surrounding ? air. ? for ? better ? heat \ sinking, ? the ? copper ? area ? should ? be ? equally ? shared ? between ? the ? v in , ? v out , ? and ? gnd ? pins. ?
page ? no. ? : ? 6/11 ds \ rs7300 \ 14 ??? september, ? 2009 ? www.orister.com ? if ? the ? rs7300 ? uses ? a ? sot \ 89 ? package ? and ? this ? package ? is ? mounted ? on ? a ? double ? sided ? printed ? circuit ? board ? with ? two ? square ? inches ? of ? copper ? allocated ? for ? ?heat ? spreading?, ? the ? resulting ? ja ? is ? 155c/w. ?? ? based ? on ? the ? maximum ? operating ? junction ? temperature ? 125c ? with ? an ? ambient ? of ? 25c, ? the ? maximum ? power ? dissipation ? will ? be: ? ? w 65 0 155 25 125 t t p ca jc a j max . ) ( ) ( = ? = + ? = ? ? thermal ? characteristics ? were ? measured ? using ? a ? double ? sided ? board ? with ? 1?x2? ? square ? inches ? of ? copper ? area ? connected ? to ? the ? gnd ? pin ? for ? ?heat ? spreading?. ? ? dropout ? voltage ? a ? regulator?s ? minimum ? input \ output ? voltage ? differential, ? or ? dropout ? voltage, ? determines ? the ? lowest ? usable ? supply ? voltage. ? in ? battery \ powered ? systems, ? this ? will ? determine ? the ? useful ? end \ of \ life ? battery ? voltage. ? the ? rs7300 ? use ? a ? p \ channel ? mosfet ? pass ? transistor, ? its ? dropout ? voltage ? is ? a ? function ? of ? drain \ to \ source ? on \ resistance ? r ds(on) ? multiplied ? by ? the ? load ? current. ? ? out on ds out in dropout i r v v v = ? = ) ( ? ? ?
page ? no. ? : ? 7/11 ds \ rs7300 \ 14 ??? september, ? 2009 ? www.orister.com sot \ 23 ? dimension ? ? notes: ? a. all ? linear ? dimensions ? are ? in ? millimeters. ? b. this ? drawing ? is ? subject ? to ? change ? without ? notice. ? c. body ? dimensions ? do ? not ? include ? mold ? flash ? or ? protrusion. ? mold ? flash ? and ? protrusion ? shall ? not ? exceed ? 0.15 ? per ? side. ?
page ? no. ? : ? 8/11 ds \ rs7300 \ 14 ??? september, ? 2009 ? www.orister.com sot \ 89 ? dimension ? ? ? notes: ? a. all ? linear ? dimensions ? are ? in ? millimeters. ? b. this ? drawing ? is ? subject ? to ? change ? without ? notice. ? c. the ? center ? lead ? is ? in ? electrical ? contact ? with ? the ? tab. ? d. body ? dimensions ? do ? not ? include ? mold ? flash ? or ? protrusion. ? mold ? flash ? and ? protrusion ? shall ? not ? exceed ? 0.15 ? per ? side. ? e. thermal ? pad ? contour ? optional ? within ? these ? dimensions. ? f. falls ? within ? jedec ? to \ 243 ? variation ? aa, ? except ? minimum ? lead ? length, ? pin ? 2 ? minimum ? lead ? width, ? minimum ? tab ? width. ? ? ? ? ? ? ? ?
page ? no. ? : ? 9/11 ds \ rs7300 \ 14 ??? september, ? 2009 ? www.orister.com sot \ 223 ? dimension ? ? ? notes: ? a. all ? linear ? dimensions ? are ? in ? millimeters ? (inches). ? b. this ? drawing ? is ? subject ? to ? change ? without ? notice. ? c. body ? dimensions ? do ? not ? include ? mold ? flash ? or ? protrusion. ? d. falls ? within ? jedec ? to \ 261 ? variation ? aa. ? ? ? ? ? ? ? ? ? ? ?
page ? no. ? : ? 10/11 ds \ rs7300 \ 14 ??? 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. ? : ? 11/11 ds \ rs7300 \ 14 ??? 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. ? ? ? ?

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