page ?no. ?: ? 1/7 ds \ rs7202 \ 05??? april, ? 20 11 ? www.orister.com rs7202 ? 250ma? low ? quiescent ? linear ? regulator ? with ? enable ? ? general ? description ? the? rs7202 ? series ? is ? a? positive ? voltage? regulator ? with ? high ? accuracy ? output ? voltage? and ? ultra\ low? quiescent ? current ? which ? is ? typically ? 2.0 a. ? the ? device ? is ? ideal ? for ? handheld ? communication ? equipments ? and ? battery ? powered ? applications? which ? require? low? quiescent ? current.? ? the? rs7202 ? consists? of ? a ? bandgap ? reference ? voltage ? source, ? an ? error ? amplifier, ? a? p \ cha nnel ? pass ? transistor, ? a ? resistor \ divider? for ? setting ? output ? voltage, ? a ? current ? limiter, ? and ? temperat ure ? limit ? protectio n ? circuit. ? the ? high\ accuracy ? output? voltage? is ? preset? at ? an ? internally ? trimmed ? voltage ? 1.8v, ? 2.5v ? or ? 3.3v. ? other ? output ? voltages ? can ? be ? mask \? optioned ? from ? 1.2v ? to ? 5.0v ? with ? 100mv ? incr ement ? except ? the ? rs7202 \ 13 ? which ? has ? 1. 3v ? output ? voltage ? and ? rs7202 \ 185 ? which ? has ? 1.85v ? output? voltage. ? ? the? rs7202 ? has ? been ? designed ? to ? be ? used ? with ? low? cost ? ceramic ? capacitors ? and ? requires ? a? minimum ? output ? capacitor ? of ? 1.0 f. ? the ? device ? is ? available ? in ? sot \ 25 ? package. ? features ? applications ? 2.0 a ? quiescent ? current ? (typ.) ? operating ? voltages ? range +1.8v ? to ? +6v ? output ? voltages ? range +1.2v ? to ? +5.0v ? with ? 100mv ? increment? maximum ? output ? current 250ma ? low ? dropout: ? 150mv@100ma ? (v out R 2.0v) ? high? accuracy ? of ? output ? voltage ? 2.0% ? : ? v out R2.5 ? v ? 50mv ? : ? v out Q2.5 ? v ? high? ripple? rejection 60db ? output ? current ? limit ? protection ? (350ma) ? short ? circuit ? protection ? (200ma) ? thermal ? overload ? shutdown ? protection ? low ? esr ? capacitor ? compatible ? sot \ 25? package? rohs ? compliant ? and ? 100% ? lead ? (pb) \ free ? and ? green ? (halogen ? free ? with ? commercial ? standard) ? battery \ powered ? equipment ? voltage ? regulator ? for ? micro processor ? voltage ? regulator ? for ? lan ? car ds ? wireless ? communication ? equipment ? audio/video ? equipment ? post ? regulator ? for ? switching ? power ? home ? electric/electronic ? appliance ? application ? circuits ? ? ? ? ? ? ?
page ?no. ?: ? 2/7 ds \ rs7202 \ 05??? april, ? 20 11? 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 ?becaus e ? very ?small ?parametric ?changes ? could ? cause ?the ? device ?not ?to ? meet ?its ? published ? specifications. ? pin? assignments ? ? sot \ 25 ? ? ? ? package ? pin ? code ? (ne) ? symbol ? description ? 1 ? ? vin ? regulator ? input ? pin ? 2 ? ? gnd ? ground ? pin ? 3 ? ? en ? chip ? enable ? pin ? 4 ? ? nc ? no ? connection ? sot \ 25? 5 ? ? vout ? regulator ? output ? pin ? ordering ? information ? device? device? code? rs7202 \ xx? ee? yy ? z ? xx? is ? nominal? output? voltage ? (for ? example, ? 12 = 1.2v, 20? = ? 2.0v, ? 33 ? = ? 3.3v, 285 ? = ? 2.85v). ? ee? is ? en ? input ? logic, ? internal ? pull \ up ? / ? dow n? resistor? : ? (see ? en ? function s? table) ? yy ? is package ? & pin assignments ? designator : ? ne?:?sot\25 ? ? z ? is ? lead ? free ? designator ? : ? p: ? commercial ? standard, ? lead ? (pb) ? free ? and ? phosphorous ? (p) ? free ? package ? g: ? green ? (halogen ? free ? with ? commercial ? standard) ? en ? functions ? table ? ee? code ? en ? operational ? state ? h ? on ? gr ? l ? off ? h ? off ? gp ? l ? on ? ?
page ?no. ?: ? 3/7 ds \ rs7202 \ 05??? april, ? 20 11 ? www.orister.com block? diagram ? ? absolute ? maximum ? ratings ? parameter ? symbol ? ratings ? units input ? voltage?v in ? to ? gnd ? v in ? 7.0? v? en ? to ? gnd ? voltage ?\? 7.0? v? en ? to ? input ? voltage?\ ? 0.3? v? output ? current ? limit, ? i (limit) ? i limit ? 350? ma? junction ? temperature ? t j ? +155 ? o c? thermal ? resistance ? sot \ 25? ja ? 250? o c/w power ? dissipation ? sot \ 25? 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? note: ? 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. ? electrical ? characteristics ? (t a =25c, ? unless ? otherwise ? specified) ? symbol ? parameter ? conditions ? min. ? typ. ? max. unit ? v in ? input ? voltage?\ ? 1.8 ?\? 6.0? v? v in =v out +1.0v, ? v out Q2.5v?\ 0.05? +0.05 v out ? output ? voltage? v in =v out +1.0v, ? v out R2.5v?\ 2% ? v out ? +2% ? v? i max ? output ? current ?\? 250 ?\? \? ma? i limit ? current ? limit ?\?\? 0.5 ?\? a ? i sc ? short ? circuit ? current ? v out =0v, ? v in v out +0.48v? \? 200? 300? ma? i q ? quiescent ? current ? i load =0ma, ? v in =v out +1.0v ?\? 2.0? 4.5? ua? v drop ? dropout? voltage? v out R2.5v, ? i out =100ma? \? 150? 200? mv ? v line ? line ? regulation ? v out +1.0v Qv in Q6v, ? i load =1ma ?\? 0.1? 0.2? %/v? v load ? load ? regulation ? i out =1ma? to ? 100ma?\ ? 0.01? 0.02? %/ma? v ih ? en ? pin ? input ? voltage??h? ? (see ? note ? 2) ? 1.0 ?\? \? v? v il ? en ? pin ? input ? voltage??l? ? (see ? note ? 2) ?\?\? 0.3? v? i en ? en ? pin ? leakage? current ?\ ?\ ? 0.05? 0.1? ua? e n ? output ? noise ? f=10khz, ? c out =1uf?\ ? 150 ?\? uv (rms) ? psrr? ripple ? rejection ? f=100hz, ? c out =1uf?\ ? 60 ?\? db ? t c ? output ? voltage?temperature ? coefficient ? i out =1ma, ?\40c Qt a Q80c?\ ? 100 ?\? ppm/ o c t hys ? thermal ? shutdown ? hysteresis ?\?\? 10 ?\? o c? ? ?
page ?no. ?: ? 4/7 ds \ rs7202 \ 05??? april, ? 20 11? www.orister.com detail ? description ? the? rs7202 ? is ? a? low? quiescent ? current ? ldo ? linear ? regulator. ? the ? device ? provides ? preset ? 1.8v, ? 2.5v ? and ? 3.3v ? output ? voltages ? for ? output ? current ? up ? to ? 350ma. ? other ? mask ? options ? for ? special? output? voltages ? from1.5v? to ? 5.0v ? with ? 100mv ? increment ? are ? also ? available. ? as ? illustrated ? in ? function ? block ? diagram, ? it ? consists? of ? a? 1. 23v ? voltage, ? error ? amplifier, ? a? p \ channel ? pas s ? transistor, ? an ? on /off ? control ? logic,? and ? an ? internal ? feedback ? voltage ? divider. ? ? the? 1.23v ? bandgap ? reference ? 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 ? th e ? outp u t ? 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 ? feedback ? through ? an ? internal ? resistive? divider? conne cted ? to ? v out ? pin. ? additional ? blocks ? include ? with ? output? current ? limiter? and ? shutdown ? logic. ? ? internal ? p \ channel ? pass ? transistor ? the? rs7202 ? 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 ? dropo ut ? conditions ? when ? the ? pass ? transistor ? saturates, ? an d ? use? high ? base \ drive? currents ? under ? large ? loads. ? the ? rs7202 ? does ? not? suffer ? from ? these ? problems ? and ? consumes ? only ? 2.0 a ? (typical) ? of ? current ? consumption ? under ? light ? loads. ? ? enable ? function ? en ? pin ? starts ? and ? stops ? the ? regulator. ? when ? the ? en ? pin ? is ? switched ? to ? the ? power ? off ? level, ? the ? opera tion ? of ? all? internal ? circuit ? stops, ? the ? bu ild \ in ? p \ c hannel ? mosfet ? output ? transistor ? between ? pins ? v in ? and ? v out ? is ? switched ? off, ? allowing ? current ? consumption ? to ? be ? drastically ? reduced. ? the ? v out ? pin ? enters ? the ? gnd ? level ? due ? to ? the ? several ? m ? resistance ? of ? the ? feedback ? voltage? divider ? between ? v out ? and ? gnd ? pins. ? ? output ? voltage ? selection ? the? rs7202 ? output ? voltage? is ? preset? at? an ? internally ? trimmed ? voltage ? 1.8v, ? 2.5v ? or ? 3.3v. ? the? output ? voltage ? also ? can? be ? mask \ optioned ? from ? 1.2v? to ? 5.0v ? with ? 100mv ? increment ? by ? special? order ? (but ? only ? 1.28v ? in ? stead ? of ? 1.3v). ? the? first ? two ? digits ? of ? part ? nu mber ? suffix ? identify ? the ? out p ut ? voltage? (see ? ordering ? information ). ? for ? example, ? rs7202 \ 33 ? has ? a? preset ? 3.3v ? output? voltage. ? ? current ? limit ? the? rs7202 ? 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 ? 35 0ma. ? ? thermal ? overl oad ? protection ? thermal ? overload ? protection ? limits ? total ? power ? dissipation ? in ? the ? rs7202. ? when ? the ? junction ? temperature ? exceeds ? t j =+155c, ? a? thermal ? sensor? turns ? off ? the ? pass? transistor, ? allowing ? the ? ic? to ? cool? down.? the ? thermal ? sensor? turns ? the ? pass? transistor ? active ? again ? after ? the ? junction ? temperature ? cools ? down ? by ? 10c, ? resulting ? in ? a ? pulsed ? output ? during ? continuous ? thermal ? overload ? conditions. ? ? thermal ? overload ? protection ? is ? designed ? to ? protect ? the ? rs7202 ? in ? the ? event? of ? fault ? co nditions. ? for ? contin uous ? ope ration, ? the ? maximum ? operating ? junction ? temperature ? rating ? of ? t j =+125c ? should ? not ? be ? exceeded. ? ? 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 ? rs7202 ? uses ? 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 onds out in dropout i r v v v = ? = )( ? ? ? ?
page ?no. ?: ? 5/7 ds \ rs7202 \ 05??? april, ? 20 11? www.orister.com sot \ 25 ? 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. ? d. falls ? within ? jedec ? mo \ 193 ? variation ? ab ? (5 ? pin).? ? ? ? ? ? ? ? ? ? ? ? ?
page ?no. ?: ? 6/7 ds \ rs7202 \ 05??? april, ? 20 11? 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. ?: ? 7/7 ds \ rs7202 \ 05??? april, ? 20 11? 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 ? product ? or ? service ? without ? notice. ? exce pt ? as ? pro vided ? 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 tent, ? copy rig ht ? 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 pport ? th is ? warranty. ? spe cific ? 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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