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maxim integrated products 1 ??? 19-4245; rev 0; 1/12 ?? ??????? china.maxim-ic. com/MAX8971.related MAX8971??????? (li + )??1.55a? ??7.5v???22v??? 4mhz?????? y?? ???? ?????? ???????? ???????? ic???usb??? ???usb ?i 2 c?????? ?????i 2 c? ?????????? icy??202.18mm x 1.62mm wlp? ? usb y ? gpspda s ?? ? ? ? ? s ?? s ? ? ? 5%??0.5%?? s ? ? jeita?? ? ?/?????? ? usb s ? ???/ ? ?i 2 c???/ ? ? s i 2 c? ? (100ma1500m a) ? ?/?(250ma15 50ma) ? ?(4.1v4.15v4.2v4.35v) ? ?? ? ?? s + 22v?? s ???7.5v s 5v usb/?ldousb phy s 2.3a gsm rf??() s ??(v ichg )?adc s ?? s /? s ?? MAX8971 ?1.55a li + dc-dc ??????????????? ?????maxim?10800 852 1249 ()10800 152 1249 () maxim?china.maxim-ic.com
maxim integrated products 2 MAX8971 ?1.55a li +dc-dc ?? ?? 4 ? 4 4 ? 9 ? 11 ? 12 ? 13 14 ? 14 ?? 16 dc???? 16 16 pvl avl 16 (thm) 16 ?? ? 17 ? ? 17 ? ?? 20 ? ?? 20 ? + ??? 20 ? ?? 20 ?? 20 ? ?? 20 ? ? 20 ?? 20 ? ?? 21 ? 21 ? 21 v ichg 22 sa feout 22 je ita? 22 ma xim model gauge m3? 22 ??gsm?? 22 ? ? 23 ? 23 ? 23
maxim integrated products 3 MAX8971 ?1.55a li +dc-dc ??() ?? ??? ? 23 ? 23 i 2 c? 26 26 27 ? ? 28 d etails1 29 de tails2 30 us b 31 ? 31 ?? 31 ?? 32 ??gsm???? 35 ? 36 _ 36 ?? 37 ? 37 ?? 37 ?? 38 ? 39 1. ?? 17 2. ? 23 3. 47m 68m ?? 24 4. 47m 68m ?? 24 5. ?i 2 c?? 24 6. chgcc[4:0] 32 7. dcilmt[5:0] 33 ?1. ?? 15 ?2. /??? 18 ?3. ??? 19 ?4. jeita? 22 ?5. MAX8971max17047 22
maxim integrated products 4 MAX8971 ?1.55a li +dc-dc byp to pg_ -0 3v to +22v dc_ to byp -6v to +0 3v i2cin, v ichg , irqb, sda, scl to gnd -0 3v to +6v bst to avl -0 3v to +16v bst to lx_ -0 3v to +6v pvl, sfo, bat, cs to pg_ -0 3v to +6v avl, thm to gnd -0 3v to +6v pg_ to gnd -0 3v to +0 3v dc_, lx_, cs, bat, byp continuous current 1 6a rms continuous power dissipation (t a = +70nc) wlp derate 21 7mw/ nc above +70nc 1736mw operating temperature range -40n c to +85nc junction temperature +150n c storage temperature range -65n c to +150nc soldering temperature (reflow) +260n c absolute m a xi m u m r a tings *this device is constructed using a unique set of packaging techniques that impose a limit on the thermal profile the device can be exposed to during board-level solder attach and rework this limit permits only the use of the solder profiles recommended in the industry-standard specification, jedec 020a, paragraph 7 6, table 3 for ir / vpr and convection reflow preheating is required hand or wave soldering is not allowed stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. these are stress ratings only, and functional opera- tion of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. e lect r ic a l c h ara cte r istics (v dc = 5v, c byp = 1 f f, i fchg = 500ma, c avl = 4 7f f, v thm = avl/2, t a = -40 n c to +85n c, unless otherwise noted typical values are at t a = +25nc ) (note 2) wlp junction-to-ambient thermal resistance ( q ja ) 46c/w junction-to-case thermal resistance (q jc ) 2c/w n ote 1: package thermal resistances were obtained using the method described in jedec specification jesd51-7, using a four- layer board for detailed information on package thermal considerations, refer to china.maxim-ic.com/thermal-tutorial p a ck a ge t he rma l c h ara cte r istics ( n ote 1) param ete r con d itions m in t yp ma x units d c in p ut dc operating voltage range 4 0 v ovp v dc undervoltage lockout dc rising, 500mv hysteresis 3 6 3 8 4 0 v dc overvoltage threshold (v ovp )* dc rising, 250mv hysteresis 7 25 7 5 7 75 v dc ovp interrupt delay 16 ms dc to bat shutdown threshold when charging stops, v dc falling, 150mv hysteresis 0 50 100 mv dc supply current charger enabled, v dc = 5 5v 2 ma bst leakage current v bst = 5 5v, lx_ = pg_ t a = +25c 0 01 10 fa t a = -40c to +85c 0 1 lx_ leakage current v lx_ = 0 or 5 5v t a = +25c 0 01 10 t a = -40c to +85c 0 1 bat reverse leakage current v dc = 0v, v bat = 4 2v 1 5 fa input-current limit range 0 1 1 5 a
maxim integrated products 5 MAX8971 ?1.55a li +dc-dc elect r ic a l ch ara cte r istics (continued) (v dc = 5v, c byp = 1 f f, i fchg = 500ma, c avl = 4 7f f, v thm = avl/2, t a = -40 n c to +85n c, unless otherwise noted typical values are at t a = +25nc ) (note 2) param ete r con d itions m in t yp ma x units input-current limit accuracy usb 100ma mode 90 95 100 ma usb 500ma mode 450 475 500 input limit programmed to 1 5a, i fchg = 1500ma 1350 1500 1650 adaptive input-current limit (aicl) (note 4) dc voltage where charge current is regulated 4 5 v dc voltage where charge current is set to 75ma 4 4 input limit switch v dc = 5 5v, i byp = 100ma 35 80 m i buck o p e ra tion switching frequency v bat = 3 6v 4 mhz maximum duty cycle 99 5 % minimum on-time 55 ns maximum on-time 10 s minimum off-time 65 ns soft-start time 1 5 ms high-side resistance i lx = 100ma, v dc = 5 5v 120 250 m i low-side resistance i lx = 100ma, v dc = 5 5v 150 220 m i thermal regulation temperature (t reg ) i 2 c programmable 2-bits (90, 105, 120, and disable selections, 105 default) 105 c thermal regulation gain percentage decrease in i fchg above the thermal regulation temperature 5 %/c b a tte ry ch ar ge r pr ech ar ge battery-prequalification lower threshold (v pqlth ) v bat rising, 130mv hysteresis 2 1 v dead-battery charge current (i dbat ) 0v v bat 2 1v 45 ma battery-prequalification upper threshold (v pquth ) ** v bat rising, 150mv hysteresis 2 5 v prequalification charge current (i pq ) percentage of fast-charge current programmed 10 % const a nt - cu rr ent m o d e bat fast-charge current range (i fc ) 5 bitsC50ma steps, r cs = 47mi 250 1550 ma fast-charge current accuracy t a = +15nc to +45nc -5 +5 % jeita safety region (figure 6) -65 -50 -35 %
maxim integrated products 6 MAX8971 ?1.55a li +dc-dc elect r ic a l ch ara cte r istics (continued) (v dc = 5v, c byp = 1 f f, i fchg = 500ma, c avl = 4 7f f, v thm = avl/2, t a = -40 n c to +85n c, unless otherwise noted typical values are at t a = +25nc ) (note 2) param ete r con d itions m in t yp ma x units const a nt v olt a ge m o d e battery regulation voltage (v batreg ) i bat = 100ma, operating in voltage-regulation mode, i 2 c- programmable 4 1v, 4 15v, 4 2v, and 4 35v selection t a = +25nc -0 5 +0 5 % t a = -40nc to +85n c -1 +1 jeita safety region, percentage of battery regulation voltage (note 6) 96 97 98 battery refresh threshold (below regulation point), 100mv and 150mv selection, default 150mv (note 5) 120 150 185 mv battery overvoltage protection v bat threshold over regulation voltage to turn off charger during charge (% of regulation voltage) (note 7) 102 103 5 105 % hysteresis (v bat falling) at 4 2v 1 4 charge-current termination threshold (i topoff ) programmable topoff current independent of jeita functionality, default 50ma, 200ma hysteresis 50 200 ma deglitch time 16 ms charge-current termination accuracy i topoff = 200ma -20 +20 % gs m test m o d e gsm test-mode output pulse current v bat capacitance 60ff, peak current pulse frequency = 217hz, on-duty cycle 12 5% 2 3 a gsm test-mode minimum output v bat capacitance 60ff, current pulse frequency = 217hz, on-duty cycle 12 5% (note 3) 3 7 v ch ar ge r ti m e r prequalification time (t pq ) v bat < v batpq_ut 45 mins fast-charge time (t fc ) default 5 hours, i 2 c programmable (4C10 hours and disabled selection) 5 hrs timer accuracy 20 % top-off time (t topoff ) i 2 c programmable 0 to 70 mintues, 10-minute steps, default 30 mintues 0 70 mins top-off timer accuracy 20 % timer-extend current threshold (note 3) percentage of fast-charge current below which the timer clock operates at half speed 50 %
maxim integrated products 7 MAX8971 ?1.55a li +dc-dc elect r ic a l ch ara cte r istics (continued) (v dc = 5v, c byp = 1 f f, i fchg = 500ma, c avl = 4 7f f, v thm = avl/2, t a = -40 n c to +85n c, unless otherwise noted typical values are at t a = +25nc ) (note 2) param ete r con d itions m in t yp ma x units the rm isto r m onito r thm threshold, cold, no charge (0 c) v thm/avl rising, 1% hysterisis (thermistor temperature falling) 71 06 74 56 78 06 % thm threshold, cold, current foldback (+15c) v thm/avl rising, 1% hysterisis (thermistor temperature falling) 57 00 60 00 63 00 % thm threshold, hot, voltage foldback (+45c) v thm/avl falling, 1% hysterisis (thermistor temperature rising) 32 68 34 68 36 68 % thm threshold, hot, no charge (+60nc) v thm/avl falling, 1% hysterisis (thermistor temperature rising) 21 24 22 54 23 84 % thm input bias current v thm = v avl or 0v t a = +25nc -0 2 0 01 +0 2 f a t a = +85nc 0 01 v ichg v ichg output voltage i bat = 100ma 150 mv i bat = 1000ma 1260 1400 1540 mv i bat = 1500ma 2100 mv i rq b out p ut low-level output saturation voltage i irqb =10ma, sinking current 0 4 v high-level leakage current v irqb = 5v t a = +25nc -1 0 01 +1 fa t a = +85nc 0 1 f a s af eout out p ut regulated output i sfo = 30ma, v dc = 5 5v 4 75 5 5 25 v dropout voltage i sfo = 30ma 45 mv current limit 590 ma maximum output current 100 ma pok output threshold 2 7 v pv l /av l out p ut pvl output voltage 5 5v < v dc < 7 5v, no load 5 05 v avl output voltage 5 5v < v dc < 7 5v, no load 5 05 v logic le v els a n d ti m ing ch ara cte r istics ( scl , s da) output low threshold i o = 3ma, sink current (sda) 0 4 v input low threshold v i2cin = 1 8v 0 4 v input high threshold v i2cin = 1 8v 1 4 v
maxim integrated products 8 MAX8971 ?1.55a li +dc-dc elect r ic a l ch ara cte r istics (continued) (v dc = 5v, c byp = 1 f f, i fchg = 500ma, c avl = 4 7f f, v thm = avl/2, t a = -40 n c to +85n c, unless otherwise noted typical values are at t a = +25nc ) (note 2) n ote 2: parameters are production tested at t a = +25nc limits over the operating temperature range are guaranteed through correlation using statistical quality control (sqc) methods n ote 3: guaranteed by design, not production tested n ote 4: voltage for 4 35v battery mode increases by 100mv n ote 5: refresh voltage for 4 15v increases by 50mv n ote 6: jeita decreases by 1% for 4 15v termination voltage n ote 7: battery overvoltage increases by 1% for 4 15v termination voltage * = contact factory for alternate thresholds (6.7v, 9.7v, and 14v available). ** = contact the factory for 3.0v. param ete r con d itions m in t yp ma x units input bias current v i2cin = 1 8v, t a = +25c 1 a scl clock frequency 100 400 khz bus free time between start and stop (note 3) 1 3 s hold time repeated start condition (note 3) 0 6 s scl low period (note 3) 1 3 s scl high period (note 3) 0 6 s setup time repeated start condition (note 3) 0 6 s sda hold time (note 3) 0 s sda setup time (note 3) 100 ns maximum pulse width of spikes (must be suppressed by the input filter of both sda and scl signals) (note 3) 50 ns setup time for stop condition (note 3) 0 6 s the rma l r egul a tion a n d shut d o w n thermal shutdown temperature (note 3) +160 c thermal shutdown hysteresis (note 3) 15 c
maxim integrated products 9 ? (v dc = 5v, c byp = 1ff, c avl = 4 7ff, v thm = 2 5v, t a = -40nc to +85nc, unless otherwise noted typical values are at t a = +25nc ) dc quiescent current vs. dc supply voltage MAX8971 toc01 dc voltage (v) quiescent current (ma) 12 10 8 6 0.5 1.0 1.5 2.0 2.5 3.0 0 41 4 dc supply current vs. temperature temperature (c) dc supply current (ma) 80 70 60 50 40 30 20 10 0 -10 -20 -30 2.5 0 -40 90 MAX8971 toc02 0.5 1.0 1.5 2.0 battery leakage current vs. temperature temperature (c) battery leakage current (a) 80 70 60 50 40 30 20 10 0 -10 -20 -30 1.8 0 -40 90 MAX8971 toc03 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 medium load switching wavefroms MAX8971 toc06 i fchg = 500ma 200ns /div 20mv/div ac-coupled 2v/div 200ma/div 0 v bat v lx i lx fast-charge current vs. dc supply voltage MAX8971 toc04 dc voltage (v) fast-charge current (ma) 100 200 300 400 500 600 0 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 v dc , rising i fchg = 500ma v dc , falling heavy load switching wavefroms MAX8971 toc07 i fchg = 1.55a 400ns /div 20mv/div ac-coupled 2v/div 1a/div 0 v bat v lx i lx MAX8971 ?1.55a li +dc-dc
maxim integrated products 10 ?() (v dc = 5v, c byp = 1ff, c avl = 4 7ff, v thm = 2 5v, t a = -40nc to +85nc, unless otherwise noted typical values are at t a = +25nc ) usb removal MAX8971 toc11 100ms /div 500ma/div 2v/div 5v/div 5v/div 0 0 0 v usb v bat i bat v lx usb insertion into 500ma default fast-charge current MAX8971 toc10 100ms /div 250ma/div 5v/div 5v/div 2v/div 0 0 0 v bat i bat v lx v usb with automatic usb 100ma mode charger enable soft-start time MAX8971 toc08 400s /div 500ma/div 500ma/div 2v/div 2v/div 0 0 0 i bat v bat i dc v dc battery insertion/removal (1a input current limit) MAX8971 toc12 10ms /div 500ma/div 2v/div 2v/div 5v/div 0 0 0 v dc v bat i bat v lx lg lp-ahkm (950mah) i lim = 1a i fchg = 500ma dc plug-in to 1a default fast-charge current MAX8971 toc10a 40ms /div 500ma/div 500ma/div 2v/div 2v/div 0 0 0 0 v bat i bat v dc i dc i fchg = 1.a with automatic usb 100ma mode avl/pvl voltage vs. dc supply voltage MAX8971 toc09 dc voltage (v) avl/pvl voltage (v) 4.4 4.5 4.6 4.7 4.8 4.9 5.0 5.1 5.2 4.3 v pvl v avl 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 MAX8971 ?1.55a li +dc-dc
maxim integrated products 11 ? (v dc = 5v, c byp = 1ff, c avl = 4 7ff, v thm = 2 5v, t a = -40nc to +85nc, unless otherwise noted typical values are at t a = +25nc ) battery charger efficiency vs. battery voltage MAX8971 toc17 battery voltage (v) efficiency (%) 4.1 3.9 3.5 3.7 2.9 3.1 3.3 2.7 55 60 65 70 75 80 85 90 95 100 50 2.5 4.3 i bat = 1.25a i bat = 1.5a i bat = 0.5a v dc = 5v, preq = 2.5v, v bat = 4.2v fast charge to suspend MAX8971 toc15 400ms /div 200ma/div 5v/div 5v/div 5v/div 0 0 0 v sda v bat v lx i lx fast-charge current vs. temperature temperature (c) fast-charge current (ma) 80706050403020100-10-20-30 550 450 -40 90 MAX8971 toc13 460 470 480 490 500 510 520 530 540 battery charger efficiency vs. charge current MAX8971 toc18 charge current (ma) efficiency (%) 55 60 65 70 75 80 85 90 95 100 50 0 200 400 600 800 1000 1200 1400 v bat = 3v v bat = 3.6v v bat = 4.2v battery regulation voltage vs. temperature temperature (c) battery voltage (v) 80 70 60 50 40 30 20 10 0 -10 -20 -30 4.220 4.190 -40 90 MAX8971 toc16 4.195 4.200 4.205 4.210 4.215 fast-charge current vs. battery voltage MAX8971 toc14 battery voltage (v) fast-charge current (ma) 1.5 2.5 1.0 2.0 3.53.0 4.0 100 200 300 400 500 600 0 0.5 MAX8971 ?1.55a li +dc-dc
maxim integrated products 12 ? (v dc = 5v, c byp = 1ff, c avl = 4 7ff, v thm = 2 5v, t a = -40nc to +85nc, unless otherwise noted typical values are at t a = +25nc ) automatic input current limit (2 i cable resistance) MAX8971 toc23 100ms /div 500ma/div 500ma/div 2v/div 2v/div 0 0 0 0 v bat i bat i dc v dc charge profile for 1500mah 4.2v battery with 70ma constant load charged at 0.6c MAX8971 toc21 time (minutes) battery voltage (v) 0.5 1.5 1.0 2.0 2.5 3.0 3.5 4.0 4.5 0 900 -100 03 0609 0 120 150 180 0 100 200 300 500 600 700 800 400 battery charger efficiency vs. battery voltage MAX8971 toc19 battery voltage (v) efficiency (%) 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 10 20 30 40 50 60 70 80 90 100 0 1.0 i bat = 0.5a i chg = 500ma, preq = 2.5v i bat = 0.5a automatic input current limit (1i cable resistance) MAX8971 toc24 4ms /div 200ma/div 500ma/div 2v/div 2v/div 0 0 0 0 v bat i bat i dc v dc automatic input current limit MAX8971 toc22 10ms /div 500ma/div 500ma/div 2v/div 2v/div 0 0 0 v bat i bat i dc v dc charge profile for 1830mah 4.35v battery charged at 0.55c MAX8971 toc20 time (minutes) battery voltage (v) 0.5 1.5 1.0 2.0 2.5 3.0 3.5 4.0 4.5 0 1000 0 03 0609 0 120 150 100 200 300 400 600 700 800 900 500 MAX8971 ?1.55a li +dc-dc
maxim integrated products 13 ? (v dc = 5v, c byp = 1ff, c avl = 4 7ff, v thm = 2 5v, t a = -40nc to +85nc, unless otherwise noted typical values are at t a = +25nc ) charge current vs. ambient temperature MAX8971 toc29 rising ambient temperature (c) charge current (ma) 100 200 300 400 600 500 700 0 40 45 50 55 60 65 100ki, = 4250 thermistor i fchg = 500ma, safety region 1 v ichg gain vs. charge current MAX8971 toc27 charge current (ma) v ichg gain (v/v) 150013001100900700500300 1.3 1.4 1.5 1.6 1.7 1.8 1.2 100 sfo output voltage vs. input voltage MAX8971 toc25 input voltage (v) sfo output voltage (v) 7.06.56.05.5 4.80 4.85 4.90 4.95 5.00 5.05 5.10 4.75 5.0 7.5 i fso = 50ma i fso = 100ma i fchg = 500ma gsm test mode MAX8971 toc30 2ms /d iv v batt i batt v dc charge current vs. ambient temperature MAX8971 toc28 falling ambient temperature (c) charge current (ma) 25 20 15 10 5 100 200 300 400 500 600 0 03 0 100ki, = 4250 thermistor i fchg = 500ma, safety region 1 sfo output voltage vs. load current MAX8971 toc26 load current (ma) sfo voltage (v) 908070605040302010 4.80 4.85 4.90 4.95 5.00 5.05 5.10 4.75 0 100 v dc = 7v v dc = 5v MAX8971 ?1.55a li +dc-dc
maxim integrated products 14 MAX8971 ?1.55a li +dc-dc ? a1, a2 pg1, pg2 ???fet??? a3 v ichg ??1.4mv/ma???? a4 cs ? a5 bat ?li +? b1, b2 lx1, lx2 ??lx_cs??lx1lx2??? b3 irqb ??? b4 i2cin i 2 c??? b5 thm ?thmgnd????(ntc)thmavl?? +25 c??~o???thmgnd? ???i 2 c?thmgnd c1 byp mosfet???mosfet???1 f???pg_ c2 bst ?fet?0.1 f???bstlx c3 gnd ??gnd????? MAX8971 top view (bump side down) a b c d wlp 1234 a1 pg1 pg2 v ichg cs bat thm i2cin irqb lx2 lx1 sda scl gnd bst byp a2 a3 a4 a5 b1 b2 b3 b4 b5 c1 c2 c3 c4 c5 d1 d2 d3 d4 d5 avl sfo pvl dc2 dc1 5 +
maxim integrated products 15 MAX8971 ?1.55a li +dc-dc ?() ?1. ?? c4 scl i 2 c????scli2cin?10k? c5 sda i 2 c???sdai2cin?10k? d1, d2 dc1, dc2 ??2.2f??pg_dc?byp1.5adc? ?usb??dc1dc2? d3 pvl ??????????1f??? pgnd?pvl??? d4 sfo 5v?ldo1 f???sfogndsfo??usb?? d5 avl ??????pvlavl??10??gnd? ????avl??? avl bat+ bat- system load dc byp scl sda irqb i2cin v ichg gnd avl pvl sfo dc1, dc2 bst byp c1 2.2f 25v 0603 c7 4.7f 6.3v 0402 c3 1f 6.3v 0402 c4 4.7f 6.3v 0402 c5 2.2f 6.3v 0603 c2 1f 25v 0603 c6 0.1f 0402 r1, 47mi 0402 l1, 1h 2520 r tb 0402 r2, 100ki lx1, lx2 pg1, pg2 cs bat thm -0.3v to +22v tolerant 4.0v to 10v operational MAX8971 p
maxim integrated products 16 MAX8971 ?1.55a li +dc-dc ?? MAX8971 ? jeita ?li + ? ?jeitaZ?li + ??ic?4v 7.5v??? + 7.5v? ????? ????1.5aic ?????? ???i 2 c??? ??(??????) dc???? dc??????? ?????? ??() ????????? ????? ?????? ???pwm??????? ???????? ??????? ??4mhz?? ?????????? ???4mhz?????? ??????? ?????4mhz???? ??????? ????????? ??????? ?????? ?????(di/dt)? ?1.5ms?0ma ???????? ????????di/dt pvlavl pvl?5v?ic?? pvl?bst?dc2.5v?pvl ?????1 f???pvl pgpvl??? ?1?avl?pvl??ic ???10 avl? (4.7 f)?100khz?? ic???4mhzavlgnd? 4.7 f???avl??? (thm) thm????(ntc)k ????????? N????????? ?????N? ?????? thmavl??? ??k10k ( + 25 c?)??? ? + 25 c???? r tb ?10k 3.97k ()28.7k ()? ????? ??350010k ntc ??0 c + 50 c???? ??????
maxim integrated products 17 MAX8971 ?1.55a li +dc-dc r t = r 25 x e{((1/(t+273)) x (1/298))} ? r t = ??t (?)??( ) r 25 = ?? + 25 c??( ) = ????3000k5000k t = ?( c) ??????r tb ?/? ? ?k??? ??4250 k120k k? + 45 c? 0 c?0 c???? + 50 c??????? ???? ???r tb ???o? ?r tb ? ?????dcavl ????10k k? 10k avl?250 a? 100k 100k k??? 25 a ??? ????ic???? ??t reg ??? ???10% ???10%????? t shdn ??ic?????? + 85 c ? MAX8971?? + 150 c?? ????? + 125 c? ? + 125 c???? ?? ic???????? ?3? ?2???????/?? ?3?????? ? 1. ?? the rm isto r te mp e ra tu r e r thm at t a =+25c 10,000 10,000 10,000 47,000 47,000 100,000 100,000 thermistor beta (ai ) 3380 3940 3940 4050 4050 4250 4250 r tb (i) 10,000 10,000 10,000 47,000 47,000 100,000 100,000 r tp (i) open open 301,000 open 1,200,000 open 1,800,000 r ts (i) short short 499 short 2,400 short 6,800 resistance at t1_n15 (i) 61,788 61,788 77,248 290,410 380,716 617,913 934,027 resistance at t1_0(i ) 29,308 29,308 31,971 137,750 153,211 293,090 343,283
maxim integrated products 18 MAX8971 ?1.55a li +dc-dc ?2. /??? dead battery battery voltage battery charge current 0 i pq i dbat i pq + i dbat i fchg v batreg v plth v plth v dbat dead battery + prequalification prequalification fast-charge (constant current) fast-charge (constant voltage) top-off time time done
maxim integrated products 19 MAX8971 ?1.55a li +dc-dc ?3. ??? no pwr charger disabled prequal check chg_dtls[3:0] i bat = i preq fast chg check chg_dtls[3:0] i bat = i fc v bat > v dbat v bat < v dbat v bat > v pquth soft-start set timer = 0 v bat < v pquth timer fault i rbq = low check chgint, chgstat, and details register i bat = 0 timer > tpreq topoff i rbq = low check chgint, chgstat, and details register done i rbq = low check chg_dtls[3:0] i bat = 0 v bat < v restr set timer = 0 v in too high i rbq = low i bat = 0 any charging state dead bat, prequal, fast charge or topoff battery cold i rbq = low, i bat = 0, if v bat > v dbat battery hot i rbq = low, i bat = 0, if v bat > v dbat v dc > v ovlo timer = suspend v dc < v ovlo timer = resume thermistor > t1 timer = resume thermistor < t1 timer = suspend thermistor > t4 timer = suspend thermistor < t4 timer = resume timer > t topoff i bat > i topoff + 200ma set timer = 0 i bat < i topoff v dc > v uvlo and v dc > v bat and t j < t shdn dead bat i rbq = low check chgint, chgstat, and details register i bat = i dbat v bat > v pqlth v bat < v pqlth set timer = 0 deadbat+ prequal check chg_dtls[3:0] i bat = i bat + i preq battery cool i bat = 50%, *ifchg if v bat > v dbat battery warm i rbq = low, v bat_term = v bat 125mf, if v bat > v dbat timer > tfchg
maxim integrated products 20 MAX8971 ?1.55a li +dc-dc ??? dc?????ic? ?????? ???? ?v pqlth ???ic?? ?i dbat ?v bat v pqlth ?ic????? + ???? ??ic?????? ???????v bat > v dbat ?????? ?? + ??? ??v pqlth ?v dbat ??? + ? ????????? ???????i dbat + i pq ic?????t pq ic???? ???????? ???v dbat ?ic??? ????????v bat > v dbat ???????? ??? ??v dbat ?v pquth ???? ??????????? ????i pq ic???? ?t pq ic????? ?????????? v pquth ?ic?? ?? ??v pquth ?v batreg ?? ????????? ?i fc ic???????? t fc ic??????v batreg ?ic???0 c < thm < + 15 c? ??50% + 15 c < thm < + 60 c ???100% MAX8971??????? ?????t reg ?? i fc ???(v in - v bat )inbat? i fc ? ??? ???v batreg ?i topoff ?? ????????? icv batreg ?? ?topofftopoff? ic???ic????? t fc ???? ?? ???v batreg ???topoff ?????????? ic?v batreg ????? ic?????? ?i topoff + 200ma???? ?? ?????t topoff ic ????????? ?????10 a??? ?????????? ?????ic? ?????????(di/ dt)
maxim integrated products 21 MAX8971 ?1.55a li +dc-dc ??? ???????? ????????? ???? ? ic??? + 22v ?? - 0.3v??????ic ?? ?????? ? ? ? ?? ? ?? ? ??? ? ??? ? ????? ? usb?(?) ? usb ? ????? ? usb???(?? )?? ? ? ? ic????? ????? ???????? ic????? ?????? ????????? ???? ???? ????? ??????? ????????? ?????? ????? (4.5v)???(aicl)?? ??4.5v???? ???dc??? ?dc?????? ??500ma1a? ??4.4v???? 75madc??4.5v??16ms ????????? ? ?fet??? ??(dc_i)???? ??16ms? ?
maxim integrated products 22 MAX8971 ?1.55a li +dc-dc v ichg v ichg ???(v ichg = 1400mv/ i fchg )v ichg ? ? safeout safeout???5v??? usb??v in > 2.5v?sfo??? jeita? ic?jeita??li + ??jeita Z?li + ??ic? ??????/? ? ??1t bat < + 10 c?ic?? t bat > + 45 c???4.200v ( 25mv) 4.075v ( 25mv)??50% ?25%75%jeita???? 50%?? ??2t bat < + 10 ct bat > + 45 c?ic? ??4.200v ( 25mv)4.075v ( 25mv) ??2 maxim model gauge m3? ?5??icmaximmodel gauge m3 max17047 ??????max17047v batt v tt ? ??? ??gsm?? ic?gsm?????? ic???????? ???????(?4.2v)? ??0x08b4?gsm ? ? ?4. jeita? ?5. MAX8971max17047 t1 c 0.5c 0c 10c 25c 45c temperature fast-charge current charge termination voltage 60c 85c 0c 10c 25c 45c temperature 60c 85c t2 t1 t2 4.0v 4.075v 4.2v 4.1v q25mv q25mv safety region 1 safety region 2 r t (battery) r td thrm batt dc byp lx pgnd v ichg sda scl avl thm pvl agnd i2cin sfo ain batt v tt v ss MAX8971 max17047
maxim integrated products 23 MAX8971 ?1.55a li +dc-dc ??????????? ??????100 s (t done2fc )? ????????(v sys ) c bat i load x t done2fc /(v batreg - v sys ) ?????400ma (i load ) ??????3.4v (v sys )??? ??40 f c bat 400ma x 100 s/(4.2v - 3.4v) = 40 f ?? ? 4mhz???1 h2.2 h ???????? ic????? ?????????? ???????40m 120m ?2?? ? ???????ic ??????x5rx7r ????esr????? ????4.7 f??? ??? ?????????? ?esr??z5uy5v?? ? ? ?????? ??????? ?x5rx7r?????esr?? ??????4.7 f? ??????? ? ? ???(r sns )? ??47m 0.125w??0.125w 47m 2%kpanasonic erj2bwgr047? p rsns = i charge 2 x r sns p rsns = 1.5 2 x 0.047 p rsns = 0.105w ?(i charge ) i charge_step = v ( chgcc<> )/r sns 3???? i charge_current_step = v( topoff<> )/r sns 2. ? ma nu fa ctu r e r se r ies in d uct a nce ( h ) es r ( i) cu rr ent ra ting (ma) d i m ensions fdk mipsa2520d1r0 1 0 0 08 1500 2 5mm x 2 0mm x 1 2mm = 6mm 3 murata lqm2hpn_g0 1 0 0 05 1600 2 5mm x 2 0mm x 0 6mm = 3mm 3 coilcraft epl2014 1 0 0 059 1600 2 0mm x 2 0mm x 1 4mm = 5 6mm 3 tdk mlp2520s 1 0 0 06 1500 2 0mm x 2 5mm x 1 0mm = 5mm 3 toko mipf2520 2 2 0 05 1500 2 5mm x 2 0mm x 1 0mm = 5mm 3 toko dfe252012c 1 0 06 2500 2 5 x 2 0 x 1 2 = 6mm 3 murata lqm32pn1r0mg0 1 0 06 1800 3 2 x 2 5 x 0 9 = 7 2mm 3
maxim integrated products 24 MAX8971 ?1.55a li +dc-dc 3. 47m ?68m ?? 4. 47m ?68m ?? 5. ?i 2 c?? bit v i r eg (mv) i ch ar ge (ma) r sns = 47mi i ch ar ge (ma) r sns = 68mi v (chgcc<11110>) 70 5 1500 1037 v (chgcc<10100>) 47 1000 691 v (chgcc<01010>) 23 5 500 345 bit v( to p o ff ) (mv) i ( to p o ff ) (ma) r sns = 47mi i ( to p o ff ) (ma) r sns = 68mi v (topoff<>) 9 4 200 138 2 v (topoff<>) 4 7 100 69 1 v (topoff<>) 2 35 50 34 5 r egiste r n am e r egiste r addr ess r/w r eset con d ition b 7 b 6 b 5 b 4 b 3 b 2 b 1 b 0 chgint 0x0f r vstby or rising edge of sfo_pok aicl_i topoff dc_ ovp dc_ uvp chg_i bat_i thm_i powerup chgint m sk 0x01 r/w vstby or rising edge of sfo_pok aicl_m topoff_ m dc_ ovp_m dc_ uvp_m chg_m bat_m thm_m chgst a t 0x02 r vstby or rising edge of sfo_pok dcv_ok dci_ok dcovp_ ok dcuvp_ ok chg_ok bat_ ok thm_ ok d et a ils 1 0x03 r vstby or rising edge of sfo_pok dc_v dc_i dc_ovp dc_uvp rsvd thm_d[2:0] d et a ils 2 0x04 r vstby or rising edge of sfo_pok rsvd rsvd bat_dt[1:0] chg_d[2:0]
maxim integrated products 25 MAX8971 ?1.55a li +dc-dc 5. ?i 2 c??() r egiste r n am e r egiste r addr ess r/w r eset con d ition b 7 b 6 b 5 b 4 b 3 b 2 b 1 b 0 chgcntl 1 0x05 r/w vstby or rising edge of sfo_pok rsvd rsvd rsvd rsvd rsvd rsvd dcmon_ dis usb_ sus f chgc r nt 0x06 r/w vstby or rising edge of sfo_pok fchgt[2:0] chgcc[3:0] d cc r nt 0x07 r/w vstby or rising edge of sfo_pok rsvd chgr strt dcilmt[5:0] to p o ff 0x08 r/w vstby or rising edge of sfo_pok topofft[2:0] ifst2p8 toffs[1:0] chgcv[1:0] te mpr eg 0x09 r/w vstby or rising edge of sfo_pok rtemp[1:0] thm cnfg rsvd rsvd thmres safe reg pr otc md 0x0a r/w vstby or rising edge of sfo_pok rsvd rsvd rsvd rsvd c_prot[1:0] rsvd rsvd
maxim integrated products 26 MAX8971 ?1.55a li +dc-dc i 2 c? r egiste r n am e i 2 c sl av e addr ess r egiste r addr ess r eset va lue a ccess t yp e s p eci a l f e a tu r es r eset con d ition chgint 0x6a 0x0f 0x01 r cleared upon read vstby invalid or rising edge of sfo_pok bits b7 b6 b5 b4 b3 b2 b1 b0 n am e aicl_i topoff dc_ovp dc_uvp chg_i bat_i thm_i powerup ? ?? b7 aicl_i dc 0 = ??dc??? 1 = ??dc??? 0 b6 topoff 0 = ??????? 1 = ???? 0 b5 dc_ovp dc? 0 = ??dc??? 1 = ??dc??? 0 b4 dc_uvp dc?? 0 = ??dc??? 1 = ??dc??? 0 b3 chg_i 0 = ??????? 1 = ??????? 0 b2 bat_i 0 = ??????? 1 = ??????? 0 b1 thm_i 0 = ??thm??? 1 = ??thm??? 0 b0 powerup ? 0 = ??i 2 c?? 1 = ??i 2 c?? 1
maxim integrated products 27 MAX8971 ?1.55a li +dc-dc r egiste r n am e i 2 c sl av e addr ess r egiste r addr ess r eset va lue a ccess t yp e s p eci a l f e a tu r es r eset con d ition chgint_mask 0x6a 0x01 0x00 r/w n/a vstby invalid or rising edge of sfo_pok bits b7 b6 b5 b4 b3 b2 b1 b0 n am e aicl_m topoff_m dc_ ovp_m dc_ uvp_m chg_m bat_m thm_m ? ?? b7 aicl_m dc 0 = 1 = 0 b6 topoff_m 0 = 1 = 0 b5 dc_ovp_m dc? 0 = 1 = 0 b4 dc_uvp_m dc?? 0 = 1 = 0 b3 chg_m 0 = 1 = 0 b2 bat_m 0 = 1 = 0 b1 thm_m 0 = 1 = 0
maxim integrated products 28 MAX8971 ?1.55a li +dc-dc ?? r egiste r n am e i 2 c sl av e addr ess r egiste r addr ess r eset va lue a ccess t yp e s p eci a l f e a tu r es r eset con d ition chg_stat 0x6a 0x02 r n/a vstby invalid or rising edge of sfo_pok bits b7 b6 b5 b4 b3 b2 b1 b0 n am e dcv_ok dci_ok dcovp_ ok dcuvp_ ok chg_ok bat_ok thm_ok ? b7 dcv_ok dc?????dc_dtls[1:0] 1 = dcdc_v = 1 0 = dcdc_dtls[1:0] = dc_v = 0 b6 dci_ok 1 = dcdc_i = 1 0 = dcdc_dtls[1:0] = dci = 0 b5 dcovp_ok 1 = dcdc_ovp = 1 0 = dcdc_dtls[1:0] = dc_ovp = 0 b4 dcuvp_ok 1 = dc uvp 0 = dcdc_dtls[1:0] = dc_uvp = 0 b3 chg_ok ?????chg_dtls[3:0] 1 = ?chg_dtls[3:0] = 0b01010b01100b01110b1000 0 = chg_dtls[3:0] 0b01010b01100b01110b1000 b2 bat_ok ?????bat_dtls[1:0] 1 = ???bat_dtls[1:0] = 0b010b11 0 = bat_dtls[1:0] = 0b100b00 b1 thm_ok ?????thm_dtls[2:0] 1 = ???thm_dtls[2:0] 0b1000b101 0 = ????thm_dtls[2:0] = 0b1000b101
maxim integrated products 29 MAX8971 ?1.55a li +dc-dc details1 r egiste r n am e i 2 c sl av e addr ess r egiste r addr ess a ccess t yp e s p eci a l f e a tu r es r eset con d ition details1 0x6a 0x03 r n/a vstby invalid or rising edge of sfo_pok bits b7 b6 b5 b4 b3 b2 b1 b0 n am e dc_v dc_i dc_ovp dc_uvp rsvd thm_d[2:0] ? ?? dc_v dc?? 0b0 = v dc aicl??3v < v dc < 4.5v 0b1= v dc v dc > 4.5v dc_i dc?? 0b0 = i dc i dc < ? 0b1 = i dc i dc > ? dc_ovp dc?? 0b0 = v dc v dc < v dcovlo 0b1 = v dc v dc > v dcovlo dc_uvp dc?? 0b0 = v dc v dc > v dcuvlo 0b1 = v dc v dc < v dcuvlo rsvd thm_d[2:0] ?? 0b001 = (< 0 c) 0b010 = 3(> 0 c< 10c) 0b011 = ???(> 10 c< 45c) 0b100 = 3(> 45 c< 60c) 0b101 = (> 60 c)
maxim integrated products 30 MAX8971 ?1.55a li +dc-dc details2 r egiste r n am e i 2 c sl av e addr ess r egiste r addr ess a ccess t yp e s p eci a l f e a tu r es r eset con d ition details2 0x6a 0x04 r n/a vstby invalid or rising edge of sfo_pok bits b7 b6 b5 b4 b3 b2 b1 b0 n am e bat_d[1:0] chg_d[3:0] ? ?? bat_d[1:0] ?? 0b00 = v bat < 2.1v?chg_dtls[3:0]?0b0000 0b01 = ????????????? ????????chg_dtls[3:0]?0b0110 0b10 = 0b11 = ??????(batov)bat ov?v batreg ????? chgcv???dc???? n/a chg_d[3:0] ?? 0b0000 = ?? 0b0001 = ??? 0b0010 = ??? 0b0011 = ???? 0b0100 = ??? 0b0101 = ?? 0b0110 = ???? 0b0111 = ????thm_dtls[2:0] 0b1000 = ??dc/ 0b1001 = ???????????(? regtemp[1:0]??) n/a
maxim integrated products 31 MAX8971 ?1.55a li +dc-dc usb ? ?? r egiste r n am e i 2 c sl av e addr ess r egiste r addr ess a ccess t yp e s p eci a l f e a tu r es r eset con d ition chgcntl1 0x6a 0x05 r/w n/a vstby invalid or rising edge of sfo_pok bits b7 b6 b5 b4 b3 b2 b1 b0 n am e dcmon_dis usb_sus bits b7 b6 b5 b4 b3 b2 b1 b0 n am e fchgt[2:0] chgcc[4:0] ? ?? 0 0 0 0 0 0 dcmon_dis dcmon_dis???? 0 usb_sus usb?????? 0 ? ?? b4Cb0 chgcc[4:0] ? ??????250ma1.55a ?50ma6?chgcc[4:0]? 500ma b7, b6, b5 fchgt[2:0] ???(t fc ) 0x00 = 0b000 = 0x01 = 0b001 = 4? 0x02 = 0b010 = 5? 0x03 = 0b011 = 6? 0x04 = 0b100 = 7? 0x05 = 0b101 = 8? 0x06 = 0b110 = 9? 0x07 = 0b111 = 10? 0b010 r egiste r n am e i 2 c sl av e addr ess r egiste r addr ess a ccess t yp e s p eci a l f e a tu r es r eset con d ition fchgcrnt 0x6a 0x06 r/w protected with cprot[1:0] vstby invalid or rising edge of sfo_pok
maxim integrated products 32 MAX8971 ?1.55a li +dc-dc 6. chgcc[4:0] ?? chgcc [4:0] ch ar ge cu rr ent with 47m ? s ense (ma) 0 0 0 0 0 250 0 0 0 0 1 250 0 0 0 1 0 250 0 0 0 1 1 250 0 0 1 0 0 250 0 0 1 0 1 250 0 0 1 1 0 300 0 0 1 1 1 350 0 1 0 0 0 400 0 1 0 0 1 450 0 1 0 1 0 500 0 1 0 1 1 550 0 1 1 0 0 600 0 1 1 0 1 650 0 1 1 1 0 700 0 1 1 1 1 750 chgcc [4:0] ch ar ge cu rr ent with 47m ? s ense (ma) 1 0 0 0 0 800 1 0 0 0 1 850 1 0 0 1 0 900 1 0 0 1 1 950 1 0 1 0 0 1000 1 0 1 0 1 1050 1 0 1 1 0 1100 1 0 1 1 1 1150 1 1 0 0 0 1200 1 1 0 0 1 1250 1 1 0 1 0 1300 1 1 0 1 1 1350 1 1 1 0 0 1400 1 1 1 0 1 1450 1 1 1 1 0 1500 1 1 1 1 1 1550 bits b7 b6 b5 b4 b3 b2 b1 b0 n am e chgrstrt dcilmt[5:0] ? ?? chgrstrt 0b0 = - 150mv 0b1 = -100mv 0b0 dcilmt[5:0] ?? dc-dc???v dc ??100ma1.5a ?25ma7?dcilmt[5:0]? 500ma r egiste r n am e i 2 c sl av e addr ess r egiste r addr ess a ccess t yp e s p eci a l f e a tu r es r eset con d ition dccrnt 0x6a 0x07 r/w protected with cprot[1:0] vstby invalid or rising edge of sfo_pok
maxim integrated products 33 MAX8971 ?1.55a li +dc-dc 7. dcilmt[5:0] d cil m t [5:0] t ar get in p ut li m it (ma) 0 0 0 0 0 0 100 0 0 0 0 0 1 100 0 0 0 0 1 0 100 0 0 0 0 1 1 100 0 0 0 1 0 0 100 0 0 0 1 0 1 100 0 0 0 1 1 0 100 0 0 0 1 1 1 100 0 0 1 0 0 0 100 0 0 1 0 0 1 100 0 0 1 0 1 0 250 0 0 1 0 1 1 275 0 0 1 1 0 0 300 0 0 1 1 0 1 325 0 0 1 1 1 0 350 0 0 1 1 1 1 375 0 1 0 0 0 0 400 0 1 0 0 0 1 425 0 1 0 0 1 0 450 0 1 0 0 1 1 475 0 1 0 1 0 0 500 0 1 0 1 0 1 525 0 1 0 1 1 0 550 0 1 0 1 1 1 575 0 1 1 0 0 0 600 0 1 1 0 0 1 625 0 1 1 0 1 0 650 0 1 1 0 1 1 675 0 1 1 1 0 0 700 0 1 1 1 0 1 725 0 1 1 1 1 0 750 0 1 1 1 1 1 775 1 0 0 0 0 0 800 1 0 0 0 0 1 825 1 0 0 0 1 0 850 1 0 0 0 1 1 875 1 0 0 1 0 0 900 1 0 0 1 0 1 925 1 0 0 1 1 0 950 1 0 0 1 1 1 975 1 0 1 0 0 0 1000
maxim integrated products 34 MAX8971 ?1.55a li +dc-dc 7. dcilmt[5:0]() ?dcilim???95% d cil m t [5:0] t ar get in p ut li m it (ma) 1 0 1 0 0 1 1025 1 0 1 0 1 0 1050 1 0 1 0 1 1 1075 1 0 1 1 0 0 1100 1 0 1 1 0 1 1125 1 0 1 1 1 0 1150 1 0 1 1 1 1 1175 1 1 0 0 0 0 1200 1 1 0 0 0 1 1225 1 1 0 0 1 0 1250 1 1 0 0 1 1 1275 1 1 0 1 0 0 1300 1 1 0 1 0 1 1325 1 1 0 1 1 0 1350 1 1 0 1 1 1 1375 1 1 1 0 0 0 1400 1 1 1 0 0 1 1425 1 1 1 0 1 0 1450 1 1 1 0 1 1 1475 1 1 1 1 0 0 1500 1 1 1 1 1 1 disable
maxim integrated products 35 MAX8971 ?1.55a li +dc-dc ??gsm???? bits b7 b6 b5 b4 b3 b2 b1 b0 n am e tofft[2:0] ifst2p8 toffs[1:0] chgcv[1:0] ? ?? tofft[2:0] ?? 0x00 = 0b000 = 0 0x01 = 0b001 = 10 0x02 = 0b010 = 20 0x03 = 0b011 = 30 0x04 = 0b100 = 40 0x05 = 0b101 = 50 0x06 = 0b110 = 60 0x07 = 0b111 = 70 0b011 ifst2p8 ?2.8a ????2.8a 0b0 toffs[1:0] ichg????? 0x0 = 0b00 = 50ma 0x1 = 0b01 = 100ma 0x2 = 0b10 = 150ma 0x3 = 0b11 = 200ma 0b00 chgcv[1:0] ?? 0x00 = 0b00 = 4.2v 0x01 = 0b01 = 4.10v 0x02 = 0b10 = 4.35v 0x03 = 0b11 = 4.15v 0b00 r egiste r n am e i 2 c sl av e addr ess r egiste r addr ess a ccess t yp e s p eci a l f e a tu r es r eset con d ition topoff 0x6a 0x08 r/w protected with cprot[1:0] vstby invalid or rising edge of sfo_pok
maxim integrated products 36 MAX8971 ?1.55a li +dc-dc ?? _ bits b7 b6 b5 b4 b3 b2 b1 b0 n am e regtemp[1:0] thm_cnfg thmres[1:0] safetyreg bits b7 b6 b5 b4 b3 b2 b1 b0 n am e cprot[1:0] ? ?? regtemp[1:0] ??? 0x0 = 0b00 = 105 c 0x1 = 0b01 = 90 c 0x2 = 0b10 =120 c 0x3 = 0b11 = 0b00 thm_cnfg 0b0 = 0b1 = 0b1 reserved na reserved na safetyreg jeita?? 0 = ?1 1 = ?2 0b0 r egiste r n am e i 2 c sl av e addr ess r egiste r addr ess a ccess t yp e s p eci a l f e a tu r es r eset con d ition tempreg 0x6a 0x09 r/w protected with cprot[1:0] vstby invalid or rising edge of sfo_pok r egiste r n am e i 2 c sl av e addr ess r egiste r addr ess a ccess t yp e s p eci a l f e a tu r es r eset con d ition protcmd 0x6a 0x0a r/w n/a vstby invalid or rising edge of sfo_pok ? ?? cprot[1:0] ? ?11??11??? 0b00 = 0b01 = 0b10 = 0b11 = 0b00
maxim integrated products 37 MAX8971 ?1.55a li +dc-dc ?? process: bicmos ? + ??(pb)/rohs??? ?? avl bat+ bat+ system load dc scl sda irqb i2cin v ichg gnd avl pvl sfo dc1, dc2 bst byp lx1, lx2 pg1, pg2 cs bat thm -0.3v to +22v tolerant 4.0v to 10v operational MAX8971 p par t te mp ra nge p in -pa ck a ge MAX8971ewp+ -40 n c to +85nc 20-bump wlp (0 4mm pitch)
maxim integrated products 38 MAX8971 ?1.55a li +dc-dc ?? ?????(?)? china.maxim-ic.com/packages ????+#- ?rohs?????????????rohs???? e d aaaa pin 1 indicator marking a3 a2 a1 a see note 7 0.05 s s e d1 e1 sd b se b a side view -drawing not to scale- 1 a top view bottom view a 1 21-0544 b 0.64 0.19 0.45 0.025 0.27 1.20 1.60 0.40 w201a2+1 2.33 2.36 1.92 1.95 w201b2+1 2.16 2.19 1.63 1.60 53 42 d b c w201c2+1 2.01 2.04 1.61 1.64 2.08 1.74 1.71 2.11 w201d2+1 0.05 m s ab title document control no. rev. 1 1 approval package outline 20 bumps, wlp pkg. 0.4mm pitch common dimensions a a2 a1 a3 b e1 d1 e sd se 0.05 0.03 0.03 basic basic 0.20 basic 0.00 basic basic ref basic min max max min e d pkg. code depopulated bumps none notes: 1. terminal pitch is defined by terminal center to center value. 2. outer dimension is defined by center lines between scribe lines. 3. all dimensions in millimeter. 4. marking shown is for package orientation reference only. 5. tolerance is 0.02 unless specified otherwise. 6. all dimensions apply to pbfree (+) package codes only. 7. front - side finish can be either black or clear. none none none ? ? ?? 20 wlp w201b2-1 21-0544 ???1891
maximmaxim????????maxim??????????? ???(??)?????? maxim integrated products, inc. 160 rio robles, san jose, ca 95134 usa 1-408-601-1000 39 ? 2012 maxim integrated products maximmaxim integrated productsinc.??? ?? ? ? ? ?? 0 1/12 MAX8971 ?1.55a li + dc-dc maxim 8328 100083 ?800 810 0310 010-6211 5199 010-6211 5299

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