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page ?no. ?: ? 1/11 rs6515 ? 2a, ? 20v, ? 400khz ? dc/dc ? asynchronous ? step \ down ? converter? ? ? general ? description ? the? rs6515 ? is ? a? high \ efficiency ? asynchronous ? step \ down ? dc/dc ? converter ? that ? can ? deliver ? up ? to ? 2a ? output? current ? from ? 4.75v ? to ? 20v ? input ? supply. ? the ? rs6515's ? current ? mode ? architecture ? and ? external ? compensation ? allow? the ? transient ? response ? to ? be ? optimized ? over ? a? wide ? range ? of ? loads ? and ? output ? capacitors. ? cycle \ by \ cy cle ? current ? limit ? provides ? protection ? against ? shorted ? outputs ? and ? soft \ start ? eliminates ? input ? current ? surge ? during ? start \ up. ? ? the? rs6515 ? also ? provides ? output ? under ? voltage ? protection ? and ? thermal ? shutdown ? protection. ? the ? low? current ? (<30 a) ? shutdown ? mode ? provides ? output ? disconnection, ? enabling ? easy ? power? management ? in ? battery \ powered ? systems. ? features ? applications ? 2a? output? current ? up ? to ? 93% ? efficiency ? integrated ? 100m ? power ? mosfet ? switches ? fixed ? 385khz ? frequency ? cycle \ by \ cycle ? over ? current ? protection ? thermal ? shutdown ? function ? wide ? 4.75v ? to ? 21v ? operating ? input ? range ? output ? adjustable ? from ? 0.92v ? to ? 18v ? programmable ? under ? voltage ? lockout ? available ? in ? an ? msop \ 10(ep) ? package ? rohs ? compliant ? an d ? 100% ? lead ? (pb) \ free ? and ? green ? (halogen ? free ? with ? commercial ? standard) ? pc ? motherboard, ? graphic ? card ? lcd ? monitor? set\ top ? boxes ? dvd \ video ? player ? telecom ? equipment ? adsl ? modem ? printer ? and ? other ? peripheral ? equipment ? microprocessor ? core? supply ? networking ? power ? suppl y ? pre\ regulator ? for ? linear ? regulators ? green ? electronics/appliances ? application ? circuits ? ? input on output c5 10nf c1 10uf/35v c4 0.1uf r3 5.6k c3 8.2nf c6 (optional) d1 b340a u1 rs6515 \ adms 2 4 5 10 7 6 9 8 bs in sw ss fb gnd en comp r1 25.8k ? 1% l1 15uh r2 10k ? 1% c2 22uf/6.3v off 4.75v ? to ? 21v ceramic ? x2 3.3v/2a ceramic ? x2 ? ? 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. ? ds \ rs6515 \ 08??? july,? 2010 ? www.orister.com
page ?no. ?: ? 2/11 on output input u1 rs6508 \ ads 1 2 3 8 5 4 7 6 bs in sw ss fb gnd en comp c4 0.1uf c2 22uf/6.3v c1 10uf/35v c5 10nf l1 15uh d1 b340a r3 5.6k r1 25.8k ? 1% r2 10k ? 1% c6 (optional) c3 8.2nf off 4.75v ? to ? 21v 3.3v/2a ceramic ? x2 ceramic ? x2 ? pin? ass ignments ? ? msop \ 10(ep) ??????????????????????????? sop \ 8 ? ? ?????????????????? ? ? ? package ? pin ? symbol ? description ? 1 ? \? nc ? no ? connect. ? 2 ? 1 ? bs ? bootstrap. ? this ? capacitor ? (c5) ? is ? needed ? to ? drive? the ? power ? switch?s ? gate ? above? the ? supply ? voltage.? it ? is ? connected ? between ? the ? sw ? and ? bs ? pins ? to ? form ? a? floating ? supply ? across ? the ? power ? switch ? driver.? the? voltage ? across ? c5 ? is ? about ? 5v ? and ? is ? supplied ? by ? the ? internal ? +5v ? su pply ? when ? the ? sw ? pin ? voltage? is ? low. ? 3 ? \? nc ? no ? connect. ? 4 ? 2 ? in ? supply ? voltage. ? the? rs6515 ? operates ? from ? a? 4.75v ? to ? 20v ? unregulated ? input. ? c1 ? is ? needed ? to ? prevent ? large ? voltage ? spikes ? from ? appearing ? at ? the ? input.? 5 ? 3 ? sw ? power ? switching ? output. ? sw ? is ? the ? switching ? node ? that ? supplies ? power ? to ? the ? output. ? connect ? the ? output ? lc ? filter ? from ? sw ? to ? the ? output ? load. ? note ? that ? a? capacitor ? is ? required ? from ? sw ? to ? bs ? to ? power ? the ? high\ side? switch. ? 6,11 ? 4 ? gnd ? ground. ?? 7 ? 5 ? fb? feedback ? input. ? fb? senses ? the ? output ? voltage ? and ? regulates ? it. ? drive? fb? with ? a? resistive ? voltage? divider? from ? the ? output? voltage ? to ? ground. ? the? feedback ? threshold ? is ? 0.92v. ? see ? setting ? the ? output? voltage. ? 8 ? 6 ? comp ? compensation ? node. ? comp ? is ? used ? to ? compensate ? the ? regulation ? control ? loop. ? connect ? a? series ? rc ? network ? from ? comp ? to ? gnd. ? in ? some ? cases, ? an ? additional ? capacitor ? from ? comp ? to ? gnd ? is ? required. ? see ? compensation. ? 9 ? 7 ? en ? enable ? input. ? en ? is ? a? digital ? input ? that ? turns ? the ? regulator ? on ? or ? off. ? drive ? en ? high? to ? turn ? on ? the ? regulator, ? drive? it ? low? to ? turn ? it ? off.? for ? automatic ? startup, ? leave? en ? unconnected. ? msop\ 10(ep) ? ? / ?? ? ???? sop\ 8 ? 10? 8 ? ss ? soft \ start. ? connect ? ss ? to ? an ? external ? capacitor ? to ? program ? the ? soft \ start. ? if ? unused, ? leave? it ? open. ? ds \ rs6515 \ 08??? july,? 2010 ? www.orister.com
page ?no. ?: ? 3/11 ordering ? information ? device? device? code? rs6515 \ xx? y ? z ? xx? is ? nominal? output? voltage ? : ? ad ? : ? adj ? y ? is ? package ? & ? pin ? assignments ? designator ? : ? ms ? : ? msop \ 10(ep) ??? s ? : ? sop \ 8 ? z ? is ? lead ? free ? designator ? : ? p: ? commercial ? standard, ? lead ? (pb) ? free ? and ? phosphorous ? (p) ? free ? package? g: ? green ? (halogen ? free ? with ? commercial ? st andard) ? ? block? diagram ? ? absolute ? maximum ? ratings ? symbol ? parameter? range? units? v in ? supply ? voltage ?\ 0.3 ? to ? +21 ? v ? v sw ? sw ? pin ? voltage ?\ 0.3 ? to ? v in ? +0.3 ? v ? v bs ? boot ? strap ? voltage ? v sw ? \ 0.3 ? to ? v sw ? +6 ? v ? v fb ? feedback ? voltage ?\ 0.3 ? to ? +6 ? v ? v en ? enable/uvlo ? voltage?\ 0.3 ? to ? +6 ? v ? v comp ? comp ? voltage ?\ 0.3 ? to ? +6 ? v ? v ss ? ss ? voltage ?\ 0.3 ? to ? +6 ? v ? t j ? junction ? temperature ? 150 ? o c? t opr ? operating ? temperature ? range ?\ 20? to ? +85 ? o c? t stg ? storage ? temperature ? range ?\ 65? to ? +150 ? o c? t lead ? lead ? temperature ? 260 ? o c ? ds \ rs6515 \ 08??? july,? 2010 ? www.orister.com
page ?no. ?: ? 4/11 ds \ rs6515 \ 08??? july,? 2010 ? www.orister.com electrical ? characteristics ? (v in =12v, ? t a =25c, ? unless ? otherwise ? specified) ? symbol ? parameter? conditions ? min. ? typ. ? max. unit v in ? input ? voltage ? \? 4.75 ? \? 20? v ? v fb ? feedback ? voltage ? 4.75v ?? v in ?? 21v ? 0.898 ? 0.925 ? 0.952 v ? r ds(on)1 ? upper ? switch ? on ? resistance ? \?\? 0.22 ? \? ? r ds(on)2 ? lower ? switch ? on ? resistance ? \?\? 10? \? ? i sw ? upper ? switch ? leakage ? v en ? = ? 0v, ? v sw ? = ? 0v? \? \? 10? ua ? i lim ? current ? limit ? (note ? 1) ?\ ? 3.0 ? \? \? a ? g cs ? current ? sense ? transconductance ? output? current ? to ? comp ? pin ? voltage ? \? \? 1.95 ? \? a/v ? a vea ? error ? amplifier ? voltage ? gain ? \?\? 400 ? \?v/v ? g ea ? error ? amplifier ? transconductance ? \? 550 ? 830 ? 1150 ua/v f s ? oscillator? frequency ? \?\? 400 ? \? khz ? f osc1 ? short ? circuit ? frequency ? v fb ? = ? 0v ? \? 240 ? \? khz ? \? soft \ start? pin ? equivalent? output ? resistance ? \? \? 9 ? \? k ? d max ? maximum ? duty ? cycle ? v fb ? = ? 1.0v ?\ ? 90? \? % ? t on ? minimum ? on ? time ? \?\? 100 ? \? ns ? \? en ? shutdown ? threshold ? i cc 100ua ? 0.7 ? 1.0 ? 1.3 ? v ? \? enable ? pull ? up ? current ? v en ? = ? 0v?\ ? 1.0 ? \? ua ? \? en ? uvlo ? threshold ? rising ? v in ? rising ? 2.35 ? 2.50 ? 2.65 v ? \? en ? uvlo ? threshold ? hysteresis?\ ? \ ? 210 ? \? mv ? i sd ? supply ? current ? (shutdown) ? v in ? 0.4v ?\ ? 23? 36? ua ? i q ? supply ? current ? (quiescent) ? v en ? 3v?\ ? 1.1 ? 1.3 ? ma ? t sd ? thermal ? shutdown ? \?\? 160 ? \? o c? notes: ? 1. slope? compensation ? changes ? current ? limit ? above ? 40% ? duty ? cycle. ? 2. stresses ? listed ? as ? the ? above ? "absolute? maximum ? ratings" ? may ? cause ? permanent ? damage ? to ? the ? device. ? these ? are ? for ? stress ? ratings. ? functional ? operation ? of ? the ? device ? at ? these ? or ? any ? other ? conditions ? beyond ? those ? indicated ? in ? the ? operational? sections ? of ? th e ? specifications ? is ? not? implied. ? exposure ? to ? absolute ? maximum? rating ? conditions ? for ? extended ? periods ? may ? remain ? possibility ? to ? affect ? device ? reliability. ? 3. devices ? are ? esd ? sensitive.? handling ? precaution ? is ? recommended. ? 4. the? device ? is ? not ? guaranteed ? to ? function ? outside ? its ? operating ? conditions. ? 5. ja ? is ? measured ? in ? the ? natural ? convection ? at? t a ? = ? 25c ? on ? a? high ? effective ? four ? layers ? thermal ? conductivity ? test ? board ? of ? jedec ? 51\ 7 ? thermal ? measurement? standard. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
page ?no. ?: ? 5/11 detail ? description ? the? rs6515 ? is ? a? synchronous ? high ? voltage ? buck ? converter ? that ? can ? support ? the ? input ? voltage ? range ? from ? 4.75v ? to ? 20v ? and ? the ? output? current ? can ? be ? up ? to ? 2a. ? ? output ? voltage ? setting ? the? resistive ? divider? allows ? the ? fb ? pin ? to ? sense ? the ? output ? voltage? as ? shown ? in ? figure ? 1. ? ? ? ? figure ? 1. ? output ? voltage ? setting ? ? the? output? voltage ? is ? set ? by ? an ? external ? resistive ? divider? according ? to ? the ? following ? equation ? ? ? ? ? ? ? ? ?? 2r 1r 1v v fb out ? ? where ? v fb ? is ? the ? feedback ? reference ? voltage ? (0.92v ? typ.). ? ? external ? bootstrap ? diode? connect ? a? 10nf ? low? esr ? ceramic ? capacitor ? between ? the ? boot ? pin ? and ? sw ? pin. ? this ? capacitor ? provides ? the ? gate ? driver ? voltage ? for ? the ? high ? side ? mosfet. ? ? it ? is ? recommended ? to ? add ? an ? external ? bootstrap ? diode ? between ? an ? external ? 5v ? and ? th e ? boot ? pin ? for ? efficiency ? improvement ? when ? input ? voltage ? is ? lower? than ? 5.5v ? or ? duty ? ratio ? is ? higher ? than ? 65%. ? the? bootstrap ? diode? can ? be ? a ? low? cost ? one ? such ? as ? 1n4148 ? or ? bat54. ? ? soft \ start ? the? rs6515 ? contains ? an ? external ? soft \ start ? clamp ? that ? gradually ? raises? the ? output ? voltage.? th e ? soft \ start ? timing ? can ? be ? programmed ? by ? the ? external ? capacitor ? between ? ss ? pin ? and ? gnd. ? the ? chip ? provides ? a ? 7 a ? charge ? current ? for ? the ? external ? capacitor. ? if ? a? 0.1 f ? capacitor ? is ? used ? to ? set ? the ? soft \ start ? and ? its ? period ? will ? be ? 13ms(typ.). ? ? inductor ? selection ? the? inductor ? value? an d ? operating ? frequency ? determine ? the ? ripple ? current ? according ? to ? a ? specific ? input ? and ? output ? voltage.? the? ripple ? current ? i l ? increases ? with ? higher ? v in ? and ? decreases ? with ? higher ? inductance. ? ? ? ? ? ? ? ? ?? ? ? ? ? ? ? ? ?? in out out l v v 1 lf v i ? ? having ? a ? lower ? ripple ? current ? reduces ? not ? only ? the ? esr ? losses ? in ? the ? output ? capacitors ? but ? also ? the ? output ? voltage ? ripple.? high ? frequency ? with ? small ? ripple ? current ? can ? achieve? highest ? efficiency ? operation. ? however, ? it ? requires ? a ? large ? inductor? to ? achieve ? this ? goal.? ? for ? the ? ripple ? current ? selection,? the ? value? of ? i l ? = ? 0.2375(i max ) ? will ? be ? a? reasonable ? starting ? point. ? the ? largest ? ripple ? current ? occurs? at ? the ? highest ? v in . ? to ? guarantee ? that ? the ? ripple ? current ? stays ? below ? the ? specified ? maximum, ? the ? inductor ? value? should ? be ? chosen ? according ? to ? the ? following ? equation ? ? ? ? ? ? ? ? ?? ? ? ? ? ? ? ?? ? )( )( maxin out maxl out v v 1 if v l ? ? ds \ rs6515 \ 08??? july,? 2010 ?
page ?no. ?: ? 6/11 inductor ? core ? selection ? the? inductor ? type ? must ? be ? selected ? once ? the ? value ? for ? l ? is ? known. ? generally ? speaking, ? high ? efficiency ? converters ? can ? not? afford ? the ? core ? loss ? found ? in ? low? cost ? powdered ? iron ? cores. ? so, ? the ? more? expensive? ferrite ? or ? mollypermalloy ? cores ? will ? be ? a ? better ? choice. ? ? the? selected ? inductance ? rather ? th an ? the ? core? size ? for ? a ? fixed ? inductor? value ? is ? the ? key ? for ? actual ? core ? loss. ? as ? the ? inductance ? increases, ? core? losses? decrease. ? unfortunately,? increase ? of ? the ? inductance ? requires ? more? turns ? of ? wire? and ? therefore ? the ? copper ? losses? will ? increase. ? ? ferrite ? designs ? are ? preferred ? at? high ? switching ? frequency ? due ? to ? the ? characteristics ? of ? very ? low? core? l osses. ? so, ? design ? goals ? can ? focus? on ? the ? reduction ? of ? copper ? loss ? and ? the ? saturation ? prevention. ? ? ferrite ? core? material ? saturates ? ?hard?, ? which ? means? that ? inductance ? collapses? abruptly ? when ? the ? peak? design ? current ? is ? exceeded. ? the ? previous ? situation ? results ? in ? an ? abrupt ? increase ? in ? inductor ? ripple ? current ? and ? c onsequent ? output ? voltage? ripple. ? ? do ? not? allow? the ? core? to ? saturate! ? different ? core? materials ? and ? shapes ? will ? change ? the ? size/ ? current ? and ? price/current ? relationship ? of ? an ? inductor. ? ? toroid ? or ? shielded ? pot ? cores ? in ? ferrite ? or ? permalloy ? materials ? are ? small ? and ? do ? not ? radiate ? energy. ? however, ? they ? ar e ? usually ? more? expensive ? than ? the ? similar ? powdered ? iron ? inductors. ? the ? rule ? for ? inductor ? choice ? mainly ? depends ? on ? the ? price ? vs. ? size ? requirement ? and ? any ? radiated ? field/emi ? requirements. ? ? c in ? and ? c out ? selection ? the? input ? capacitance, ? c in , ? is ? needed ? to ? filter ? the ? trapezoidal ? current ? at? the ? source ? of ? the ? high? side ? mosfet. ? to ? prevent ? large ? ripple ? current, ? a? low? esr ? input ? capacitor ? sized ? for ? the ? maximum ? rms ? current ? should? be ? used.? the ? rms ? current ? is ? given ? by ? ? 1 v v v v ii out in in out max out rms ??? ? )( ? ? this ? formula ? has ? a ? maximum ? at? v in ? = ? 2v out , ? where ? i rms ? = ? i out /2. ? this ? simple ? worst \ case ? condition ? is ? commonly ? used ? for ? design ? because ? even ? significant ? deviations ? do ? not ? offer ? much ? relief. ? ? choose ? a ? capacitor ? rated ? at ? a? higher ? temperature ? than ? required. ? several ? capacitors ? may ? also ? be ? paralleled ? to ? meet? size? or ? height ? requirements ? in ? the ? design. ? ? for ? the ? input ? capacitor, ? a ? 10 f ? x ? 2 ? lo w ? esr ? ceramic ? capacitor ? is ? recommended. ? for ? the ? recommended ? capacitor, ? please ? refer ? to ? table ? 3 ? for ? more? detail. ? the ? selection ? of ? c out ? is ? determined ? by ? the ? required ? esr ? to ? minimize? voltage? ripple. ? ? moreover, ? the ? amount? of ? bulk ? capacitance ? is ? also ? a? key ? for ? c out ? selection ? to ? ensure ? that ? the ? control ? loop ? is ? stable. ? loop ? stability ? can ? be ? checked ? by ? viewing ? the ? load ? transient ? response ? as ? described ? in ? a ? later? section. ? the ? output ? ripple, ? v out ? , ? is ? determined ? by ? ? ? ? ? ? ? ? ? ??? ? out l out fc8 1 esriv ? ? the? output? ripple ? will ? be ? highest ? at ? the ? maximum ? input ? voltage? since ? i l ? increases ? with ? input ? voltage. ? multiple ? capacitors ? placed ? in ? parallel? may ? be ? needed ? to ? meet? the ? esr ? and ? rms ? current ? handling ? requirement. ? dry ? tantalum, ? special ? polymer, ? aluminum ? electrolytic ? and ? ceramic ? capacitors ? are ? all? available ? in ? surface ? mount ? packages. ? special ? polymer ? capacitors ? offer ? very ? low? esr ? value. ? however, ? it ? provides ? lower ? capacitance ? density ? th an ? other ? types. ? although ? tantalum ? capacitors ? have ? the ? highest ? capacitance ? density, ? it ? is ? important ? to ? only ? use ? types ? that ? pass ? the ? surge ? test ? for ? use ? in ? switching ? power ? supplies. ? aluminum ? electrolytic ? capacitors ? have ? significantly ? higher ? esr. ? however, ? it ? can? be ? used ? in ? cost \ sensitive ? applications ? for ? ripple ? current ? rating ? and ? long ? term ? reliability ? considerations. ? ceramic ? cap acitors ? have ? excellent ? low? esr ? characteristics ? but ? can ? have ? a? high ? voltage ? coefficient ? and ? audible ? piezoelectric ? effects. ? the ? high ? q ? of ? ceramic ? capacitors ? with ? trace ? inductance ? can ? also ? lead ? to ? significant ? ringing. ? ? ? ds \ rs6515 \ 08??? july,? 2010 ?
page ?no. ?: ? 7/11 ds \ rs6515 \ 08??? july,? 2010 ? www.orister.com ? higher ? values, ? lower? cost ? ceramic ? capacitors ? are ? now ? becoming ? available ? in ? smaller ? case ? sizes. ? their? high ? ripple ? current, ? high ? voltage? rating ? and ? low? esr ? make ? them ? ideal ? for ? switching ? regulator ? applications. ? however, ? care ? must ? be ? taken ? when ? these ? capacitors ? are ? used ? at? input ? and ? output. ? when ? a? ceramic ? capacitor ? is ? used ? at? the ? input ? and ? th e ? power ? is ? supplied ? by ? a? wall ? adapter ? through ? long ? wires, ? a? load ? step ? at? the ? output ? can ? induce ? ringing ? at? the ? input, ? v in . ? at ? best, ? this ? ringing ? can? couple ? to ? the ? output ? and ? be ? mistaken ? as ? loop ? instability. ? at ? worst, ? a? sudden ? inrush ? of ? current ? through ? the ? long ? wires ? can ? potentially ? cause ? a? voltage ? spike? at ? v in ? large ? enough? to ? damage ? the ? part. ? ? output ? rectifier ? diode ? the? output ? rectifier ? diode? supplies ? the ? current ? to ? the ? inductor ? when ? the ? high\ side ? switch? is ? off. ? to ? reduce ? losses? due ? to ? the ? diode? forward ? voltage? and ? recovery ? times, ? use? a? schottky ? diode. ? ? choose ? a? diode ? whose ? maximum ? reverse ? voltage? rating ? is ? greater ? than ? th e ? maximum ? input ? voltage, ? and ? whose ? current ? rating ? is ? greater ? than ? the ? maximum ? load ? current. ? ? choose ? a? rectifier ? who?s ? maximum ? reverse ? voltage? rating ? is ? greater ? than ? the ? maximum ? input ? voltage, ? and ? who?s ? current ? rating ? is ? greater ? than ? the ? maximum ? load ? current. ? ? checking ? transient ? response ? the? regulator ? loop ? response ? can? be ? che cked ? by ? looking ? at? the ? load ? transient ? response. ? switching ? regulators ? take ? several ? cycles ? to ? respond ? to ? a ? step ? in ? load ? current. ? when ? a ? load ? step ? occurs, ? v out ? immediately ? shifts ? by ? an ? amount ? equal ? to ? i load ? (esr) ? also ? begins ? to ? charge ? or ? discharge? c out ? generating ? a? feedback ? error ? signal ? for ? the ? regulator ? to ? return ? v out ? to ? its ? steady\ state ? value.? during ? this ? recovery ? time, ? v out ? can ? be ? monitored ? for ? overshoot ? or ? ringing ? that ? would ? indicate ? a ? stability ? problem. ? ? ? table ? 1. ? suggested ? inductors ? for ? typical ? application? circuit ? component ? supplier ? series ? dimensions ? (mm) ? maglayers ? mscdri \ 124 \ 150m ? 12? x ? 12 ? x ? 5.0 ? sumida ? cdrh104r ? 10.1 ? x ? 10? x ? 3.0 ? toko ? d104c ? 10? x ? 10 ? x ? 4.3 ? ? ? table ? 2. ? suggested ? capacitors ? for ? c in ? and ? c out ? component ? supplier ? part ? no. ? capacitance ? (uf) ? case ? size ? murata ? grm31cr61e106k ? 10? 1206 ? tdk ? c3225x5r1e106k ? 10? 1206 ? murata ? grm32er71c226m ? 22? 1210 ? tdk ? c3225x5r1c226m ? 22? 1210 ? table ? 3. ? schottky ? rectifier ? selection ? guide ? 2a ? load ? current ? v in ? (max.) ? part ? no. ? vendor ? b320 ? diodes, ? inc. ? (www.diodes.com) ? sk33 ? pan ? jit ? international ? (www.panjit.com.tw) ? 20v ? ss32 ? general ? semiconductor ? (www.gensemi.com) ? b330 ? diodes, ? inc. ? (www.diodes.com) ? b340l ? diodes, ? inc. ? (www.diodes.com) ? sk33 ? diodes, ? inc. ? (www.diodes.com) ? MBRD330 ? on ? semiconductor ? (www.onsemi.com) ? 26v ? ss33 ? fairchild ? semiconductor ? (www.fairchildsemi.com) ? general ? semiconductor ? (www.gensemi.com) ? ? ?
page ?no. ?: ? 8/11 msop \ 10(ep) ? 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, ? protrusion. ? d. this ? package ? is ? designed ? to ? be ? soldered ? to ? a ? thermal ? pad ? on ? the ? board. ? e. falls ? within ? jedec ? mo \ 187 ? variation ? ba \ t. ? ? ? ? ? ? ? ds \ rs6515 \ 08??? july,? 2010 ? www.orister.com
page ?no. ?: ? 9/11 sop\ 8 ? dimension ? ? notes: ? f. all ? linear? dimensions ? are ? in ? millimeters ? (inches).? g. this ? drawing ? is ? subject ? to ? change ? without ? notice. ? h. 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. ? i. body ? width ? does ? not? include ? interlead ? flash. ? interlead ? flas h ? shall? not? exceed ? 0.017 ? (0.43) ? per ? side.? j. falls ? within ? jedec ? ms \ 012 ? variation ? aa. ? ? ds \ rs6515 \ 08??? july,? 2010 ? www.orister.com
page ?no. ?: ? 10/11 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 ? ? 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 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 ? ? ? ? ? ? ds \ rs6515 \ 08??? july,? 2010 ? www.orister.com
page ?no. ?: ? 11/11 ds \ rs6515 \ 08??? july,? 2010 ? 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. ? 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 tent, ? 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 pport ? 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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