isl9519 narrow? vdc ? regulator/charger ? with? smbus ? interface key ? features 0.5% ? system ? voltage ? accuracy ? ( \ 10c ? to ? +100c) 3%? accurate? input ? current ? limit ? ( \ 10c ? to ? +100c) 3%? accurate? battery ? charge ? current ? limit variable ? switching? frequency ? at ? light ? load ? conditions ? for ? higher ? efficiency fixed ? frequency ? operation ? at ? higher ? loads fixed ? frequency ? mode ? can ? be ? forced ? by ? an ? external ? pin trickle ? charge ? system ? for ? deeply ? di scharged ? batteries au tomatic ? trickle ? charge ? current ? (256ma) holds ? minimum ? voltage ? to ? system smbus ? 2 \ wire ? serial ? interface default ? system ? voltage ? values ? for ? 1 \ cell, ? 2 \ cell ? or ? 3 \ cell ? operation ? selected ? by ? an ? external ? pin adapter? in \ rush ? fet ? control adapter? isolation ? fet ? control battery ? short ? circuit ? protection fast ? system \ load ? transient ? response monitor ? outputs adapter? current ? (2.5% ? accuracy) ac \ adapter? presen t ? indicat or 11\ bit ? max ? system ? voltage ? setting 7 \ bit ? min ? system ? voltage ? setting 6 \ bit ? charge ? current ? setting over ? 8a ? battery ? charger ? current 6 \ bit ? adapter? current ? setting over ? 8a ? adapter? current +4.5v ? to ? +22v ? adapter? voltage ? range pb \ free ? (rohs ? compliant) descr iption
the ? isl9519 ? is ? a? highly ? integrated ? narrow ? vdc ? system ? voltage ? regulator ? and? battery ? charger ? controller. ? operating ? parameters ? are ? programmable ? over ? the ? system ? management ? bus ? (smbus). ? the ? isl9519 ? is ? designed ? for ? applications ? where ? the ? system ? power ? source ? is ? either ? the ? battery ? pack? or ? the ? output ? of ? the ? regulator/charger. ? this ? makes ? the ? max ? vol tage ? to ? the ? system ? equal ? to ? the ? max ? battery ? voltage ? instead ? of ? the ? max ? adapter ? voltage. ? the ? isl9519 ? also ? includes ? a? patented ? system ? to ? control ? trickle ? charging ? deeply ? discharged ? batteries ? while ? maintaining ? system ? voltage ? at ? a? user ? defined ? minimum. ? high? efficiency ? is ? achieved ? with ? a? dc/dc ? synchronous \ rectifier ? buck ? converter, ? equipped ? with ? dio de ? emulation ? and? variable ? switching ? frequency ? for ? enhanced ? light ? load ? efficiency ? and? ac \ adapter ? boosting ? prevention. ? the ? isl9519 ? can ? charge ? one, ? two ? or ? three ? series ? connected ? lithium \ ion ? cells,? at ? up ? to ? 8a ? charge ? current. ? default ? settings ? for ? 1 \ ,? 2 \? or ? 3 \ cell? operation ? at ? power \ up ? are ? selected ? by ? an ? extern al? pin. ? integrated ? mosfet ? drivers ? and? bootstrap ? diode ? result ? in ? fewer ? components ? and? smaller ? implementation ? area. ? low ? offset ? current \ sense ? amplifiers ? provide ? high ? accuracy. the ? isl9519 ? provides ? an ? open ? drain ? digital ? output ? that ? indicates ? the ? presence ? of ? the ? ac \ adapter. ? the ? isl9519 ? also ? provides ? an ? analog ? output ? that ? indicat es ? the ? adapter ? current. applications notebook ? computers tablet ? pcs portable ? equipment ? with ? rechargeable ? batteries parameters isl9519 v in ? (min) ? (v) 4.5 v in ? (max) ? (v) 22 input ? current ? limit ? accuracy ? (%) 3 battery ? charge ? voltage ? (v) 2v ? to ? 16.3v ? in ? charging ? voltage ? accuracy ? max ? (%) 0.5 battery ? charge ? voltage ? adjust ? (%) 16mv ? steps charge ? current ? limit ? accuracy ? (%) 3 trickle ? charge ? current ? limit ? accuracy ? (%) 166a ? to ? 346ma automatic ? trickle ? charge ? typ ? (v) 4.7 battery ? leakage ? current ? max ? ( a) 25 ? (dcin=0v,? no ? automatic ? power ? source ? selectio n yes automatic ? power ? source ? selection yes topology variable ?
switching frequency (typ) (khz) 400 max duty cycle (%) 99 audible noise no operating temp range (c) r 10 to 100 thermal shutdown (c) 150 c battery chemistry multi r cell li+/polymer
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