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anasem single-cell li-ion / li-polymer battery protection ic a7b series rev. e09-06 analog semiconductor ic .......... fu ture of the analo g world anasem inc.
anasem inc. 1 rev. e09-06 products data sheet anasem analog semiconductor ic .......... futu re of the analog world single-cell li-ion / li-polymer battery protection ic a7b series general descriptions the a7b series are protection ics for rechargeable li-ion / li-polymer battery by high withstand voltage cmos process. these series protect single-cell li-ion / li-polymer battery from over-charge, over-discharge, charge over-current and discharge over-current. features z high accuracy detection voltage z selectable detect ion voltage z delay time (internal adjustment) z high withstand voltage ab solute maximum rating 28v (vm & co terminals) z low current consumption z wide operating temperature range ?40c ~ +85c z selectable 0v battery charging function or 0v battery charge inhibiting function halogen rohs compliance typ. 1.0s typ. 31.0ms typ. 8.0ms typ. 8.0ms typ. 370 s typ. 2.0ms typ. 16.0ms 4.0v ~ 4.5v (5mv step) 0.0v ~ 0.4v (50mv step) 2.0v ~ 3.0v (5mv step) ?0.25v ~ ?0.05v (5mv step) 0.05v ~ 0.40v (5mv step) typ. 3.0 a max. 0.1 a over-charge detection delay time over-discharge detection delay time charge over-current detection delay time discharge over-current detection delay time load short-circuiting detection delay time release delay time 1 release delay time 2 operation over-discharge condition over-charge detection over-charge hysteresis over-discharge detection charge over-current detection discharge over-current detection 25mv (topr = 25c) 30mv (topr = ?5c ~ +55c) 25mv 2.5% 30mv 20mv over-charge detection over-charge hysteresis over-discharge detection charge over-current detection discharge over-current detection
anasem inc. 2 rev. e09-06 a7b series single-cell li-ion / li-polymer battery protection ic .......... futu re of the analog world products numbering guide standard models line-ups model no. selectable items a7be01aa a7be02aa a7be03aa a7be04aa over-charge detection voltage 1) 4.275v 4.280v 4.290v 4.325v over-charge hysteresis voltage 2) 0.20v 0.20v 0.20v 0.25v over-discharge detection voltage 3) 2.300v 2.300v 2.300v 2.500v charge over-current detection voltage 4) ?0.100v ?0.100v ?0.100v ?0.150v discharge over-current detection voltage 5) 0.100v 0.100v 0.100v 0.150v over-charge detection delay time 6) 1.0s 1.0s 1.0s 1.0s over-discharge detection delay time 6) 31.0ms 31.0ms 31.0ms 31.0ms charge over-current detection delay time 6) 8.0ms 8.0ms 8.0ms 8.0ms 0v battery charge function acceptable acceptable acceptable acceptable note : the value of detection voltage and delay time can be c hanged by customer?s request. for details, please contact us. 1) the over-charge detection voltage can be selected in the range 4.0v to 4.5v in 5mv steps. 2) the over-charge hysteresis voltage can be selected in the range 0.0v to 0.4v in 50mv steps. 3) the over-discharge detection voltage can be selected in the range 2.0v to 3.0v in 5mv steps. 4) the charge over-current detection voltage can be selected in the range ?0.25v to ?0.05v in 5mv steps. 5) the discharge over-current detection voltage can be se lected in the range 0.05v to 0.40v in 5mv steps. 6) the delay time can be changed within the value listed below. delay time symbol selectable value over-charge detection del ay time tc 0.125s 1.0s 3.75s over-discharge detection delay time tdc 31ms 125ms charge over-current detection delay time tic 8.0ms 125ms 1.0s * the value in bold is set for standard products a7b delivery form c : chip in tray w : 5 inches wafer e : sot-26 n : son-5 a : acceptable b : unacceptable 0v battery charge function serial code from a to z a : standard value b to z : depend upon selected value by customer detection delay time serial code from 00 to 99 * depend upon selected value by customer detection voltage
anasem inc. 3 rev. e09-06 a7b series single-cell li-ion / li-polymer battery protection ic .......... futu re of the analog world block diagram chip pad configuration chip pad layout no. symbol descriptions x y 1 d o fet gate connection for dischar ge control (cmos output) 173.5 428.5 2 v m voltage monitoring for charger negative 228.5 -428.5 3 c o fet gate connection for charge c ontrol (cmos output) -1.1 -428.5 4 v dd positive power input -37.5 428.5 5 v ss negative power input -228.5 428.5 v dd oscillato r counter short detector + _ + _ charge over-current detecto r discharge over-current detecto r + _ + _ over-charge detector over-discharge detector control circuit level shifte r vss d o v m c o chip size : 0.7mm1.1mm thickness : 0.28mm0.02mm pad size : 0.085mm0.085mm chip base level : v dd (unit : m) y x c o v m d o v ss v dd (0,0)
anasem inc. 4 rev. e09-06 a7b series single-cell li-ion / li-polymer battery protection ic .......... futu re of the analog world absolute maximum ratings items symbol ratings unit supply voltage v dd v ss ? 0.3 to v ss + 12 v input voltage of v m v m v dd ? 28 to v dd + 0.3 v output voltage of c o vc o v m ? 0.3 to v dd + 0.3 v output voltage of d o vd o v ss ? 0.3 to v dd + 0.3 v power dissipation p d 250 mw operating temperature topr ?40 to +85 c storage temperature tstg ?55 to +125 c electronical static discharge (esd) a7b series are equipped esd protection. however, please keep following conditions for preventing ic from excessive electrical stress. z tip of soldering iron, all of tools and testing machines must be connected to an earth plate. z power supply must be put first ahead of input signal. z all input signals must be connected to an earth plate when you do not use ic. z do not input beyond absolute maximum ratings even if a moment.
anasem inc. 5 rev. e09-06 a7b series single-cell li-ion / li-polymer battery protection ic .......... futu re of the analog world electrical characteristics items symbol min. typ. max. conditions unit te s t circuit detection voltage vc ?0.025 vc vc +0.025 r1=330 ? v1 over-charge detection voltage vc = 4.0 to 4.5v vc vc ?0.030 vc vc +0.030 r1=330 ? topr = ?5c to +55c 1) v1 over-charge hysteresis voltage vhc = 0.0 to 0.4v vhc vhc ?0.025 vhc vhc +0.025 r1=330 ? v1 over-discharge detection voltage vc = 2.0 to 3.0v vdc vdc 0.975 vdc vdc 1.025 v1 charge over-current detection voltage vic = ?0.25 to ?0.05v vic vic ?0.030 vic vic +0.030 v2 discharge over-current detection voltage vidc = 0.05 to 0.40v vidc vidc ?0.020 vidc vidc +0.020 v2 load short-circuiting detection volt age vshort ?1.7 ?1.3 ?1.0 based on v dd , v dd =3.5v v 2 input voltage input voltage between v dd and v ss v dd 1.8 - 8.0 internal operating voltage v - 0v battery charge starting charger voltage vcha - 0.9 1.4 a7bxxxxa v 3 0v battery charge inhibiting battery voltage vinh 0.7 1.2 1.7 a7bxxxxb v 3 current consumption current consumption on operation iopr - 3.0 6.0 v dd =3.5v, v m =0v a4 current consumption on shutdown isdn - - 0.1 v dd =v m =1.8v a4 output resistance c o : pch on resistance rcop 1.5 3.0 4.5 c o =3.0v, v dd =3.5v, v m =0v k ? 5 c o : nch on resistance rcon 0.5 1.0 1.5 c o =0.5v, v dd =4.6v, v m =0v k ? 5 d o : pch on resistance rdop 1.7 3.5 5.0 d o =3.0v, v dd =3.5v, v m =0v k ? 5 d o : nch on resistance rdon 1.7 3.5 5.0 d o =0.5v, v dd =v m =1.8v k ? 5 discharge over-current release resistance rdwn 15.0 30.0 60.0 v dd =3.5v, v m =1.0v k ? 5 detection delay time over-charge detection delay time tc=0.125s or 1.0s or 3.75s tc tc 0.70 tc tc 1.30 v dd =vc-0.2v vc+0.2v, v m =0v sec 6 over-discharge detection delay time tdc=31ms or 125ms tdc tdc 0.70 tdc tdc 1.30 v dd =vdc+0.2v vdc-0.2v, v m =0v msec 6 charge over-current detection delay time tic=8ms or 125ms or 1000ms tic tic 0.70 tic tic 1.30 v dd =3.5v, v m =0v -1.0v msec 6 discharge over-current detection delay time tidc 5.6 8.0 10.4 v dd =3.5v, v m =0v 1.0v msec 6 load short-circuiting detection delay time tshort 190 370 550 v dd =3.5v, v m =0v 3.5v sec 6 release delay time release delay time 1 over-discharge release charge over-current release discharge over-current release load short-circuiting release trel1 1.0 2.0 3.0 msec 6 release delay time 2 over-charge release trel2 8.0 16.0 24.0 v dd =vc+0.2v vc-0.2v, v m =1.0v msec 6 note : 1) the specification for this temperature range is guaranteed by design, not tested in production. (topr=25c unless otherwise specified)
anasem inc. 6 rev. e09-06 a7b series single-cell li-ion / li-polymer battery protection ic .......... futu re of the analog world measurement conditions z over-charge detection voltage, over-charge hysteresis voltage --- [circuit 1] set v1=3.5v and v2=0v. over-charge detection voltage vc is v1 at which vc o goes "low" from "high" when v1 is gradually increased from 3.5v. then ic is released from the over-charge state and vc o goes "high" from "low" at the voltage "measured vc-vhc" when v1 is gradually decreased. if v2 is set to the greater value than discharge over-current detection voltage vidc in the over-charge state, vhc is canceled and then ic is released from the over-charge state at vc. z over-discharge detection voltage --- [circuit 1] set v1=3.5v and v2=0v. over-discharge detection voltage vdc is v1 at which vd o goes "low" from "high" when v1 is gradually decreased from 3.5v. next, set v2 under to charge over-current detection voltage vic. then ic is released from the over-discharge state at vdc and vd o goes "high" from "low". z charge over-current detectio n voltage --- [circuit 2] set v1=3.5v and v2=0v. charge over-curr ent detection voltage vic is v2 at which vc o goes "low" from "high" when v2 is gradually decreased from 0v. z discharge over-current detection voltage --- [circuit 2] set v1=3.5v and v2=0v. discharge over-current detection voltage vidc is v2 at which vd o goes "low" from "high" when v2 is gradually increased from 0v. z load short-circuiting detection voltage --- [circuit 2] set v1=3.5v and v2=0v. load short-circuiting detection voltage vshort is v2 at which vd o goes "low" from "high" within a time between the minimum and the maximu m value of load short-circuiting detection delay time tshort, when v2 is increased rapidly within 10 s. z 0v battery charge starting charger voltage --- [circuit 3] set v1=v2=0v and decrease v2 gradually. 0v battery charge starting charger voltage vcha is v2 when vc o goes "high" ( v1-0.1v or higher ). z 0v battery charge inhibiting battery voltage --- [circuit 3] set v1=1.8v and v2=0v at first. then set v2=v1-4.0v. next, decrease v1 and v2 gradually, maintaining the relation of v2=v1-4.0v. 0v battery charge inhibiting battery voltage vinh is v1 when vc o goes "low" ( v2+0.1v or lower ). z current consumption on operation and shutdown --- [circuit 4] set v1=3.5v and v2=0v on normal condition. i dd shows current consumption on operation iopr. set v1=v2=1.8v on over-discharge condition. i dd shows current consumption on shutdown isdn. z c o : pch on resistance, c o : nch on resistance --- [circuit 5] set v1=3.5v, v2=0v and v3=3.0v. (v1-v3)/|ic o | is pch on resistance rcop. set v1=4.6v, v2=0v and v3=0.5v. v3/|ic o | is nch on resistance rcon.
anasem inc. 7 rev. e09-06 a7b series single-cell li-ion / li-polymer battery protection ic .......... futu re of the analog world z d o : pch on resistance, d o : nch on resistance --- [circuit 5] set v1=3.5v, v2=0v and v4=3.0v. (v1-v4)/|id o | is pch on resistance rdop. set v1=v2=1.8v and v4=0.5v. v4/|id o | is nch on resistance rdon. z discharge over-current release resistance --- [circuit 5] set v1=3.5v, v2=0v at first. a nd then, set v2=1.0v. v2/|iv m | is discharge over-current release resistance rdwn. z over-charge detection delay time, release delay time 2 --- [circuit 6] set v2=0v. increase v1 from the voltage vc-0.2v to vc+0.2v rapidly within 10 s. over-charge detection delay time tc is the time needed for vc o to go "low" just after the change of v1. next, set v2=1v and decrease v1 from vc+0.2v to vc-0.2v rapidly within 10 s. over-charge release delay time trel 2 is the time needed for vc o to go "high" just after the change of v1. z over-discharge detection delay time, release delay time 1 --- [circuit 6] set v2=0v. decrease v1 from the voltage vdc+0.2v to vdc-0.2v rapidly within 10 s. over-discharge detection delay time tdc is the time needed for vd o to go "low" just after the change of v1. next, set v2=-1v and increase v1 from vdc-0.2v to vdc+0.2v rapidly within 10 s. release delay time 1 trel1 in case of over-discharge is the time needed for vd o to go "high" just after the change of v1. z charge over-current detection delay time, release delay time 1 --- [circuit 6] set v1=3.5v and v2=0v. decrease v2 from 0v to -1v rapidly within 10 s. charge over-current delay time tic is the time needed for vc o to go "low" just after the change of v2. next, increase v2 from -1v to 0v rapidly within 10 s. release delay time 1 trel1 in case of charge over-current is the time needed for vc o to go "high" just after the change of v2. z discharge over-current detection delay time, release delay time 1 --- [circuit 6] set v1=3.5v and v2=0v. increase v2 from 0v to 1v rapidly within 10 s. discharge over-current delay time tidc is the time needed for vd o to go "low" just after the change of v2. next, decrease v2 from 1v to 0v rapidly within 10 s. release delay time 1 trel1 in case of discharge over- current is the time needed for vd o to go "high" just after the change of v2. z load short-circuiting detection delay time, release delay time 1 --- [circuit 6] set v1=3.5v and v2=0v. increase v2 from 0v to 3.5v rapidly within 10 s. load short-circuiting detection delay time tshort is the time needed for vd o to go "low" just after the change of v2. next, decrease v2 from 3.5v to 0v rapidly within 10 s. release delay time 1 trel1 in case of load short-circuiting is the time needed for vd o to go "high" just after the change of v2.
anasem inc. 8 rev. e09-06 a7b series single-cell li-ion / li-polymer battery protection ic .......... futu re of the analog world measurement circuits v 330 ? v dd v ss 0.1 f d o c o v m a7b v1 v2 vd o v vc o v v dd v ss 0.1 f d o c o v m a7b v1=3.5v v2 vd o v vc o z circuit 1 z circuit 2 a v dd v ss 0.1 f d o c o v m a7b v1 v2 i dd z circuit 3 z circuit 4 v dd v ss 0.1 f d o c o v m a7b v1 v2 v vc o 10m ? z circuit 5 z circuit 6 v2 tm v dd v ss d o c o v m a7b v1 v2 vd o tm vc o tm = time measurement v dd v ss 0.1 f d o c o v m a7b v1 a ic o v3 a id o v4 a iv m
anasem inc. 9 rev. e09-06 a7b series single-cell li-ion / li-polymer battery protection ic .......... futu re of the analog world typical connection diagram external components items symbol recommended value min. max. resistor 1 r1 330 ? 100 ? 1.0k ? capacitor 1 c1 0.1 f 0.01 f 1.0 f resistor 2 r2 3.9k ? 500 ? 6.0k ? z the supply voltage (v dd ) to this ic is stabilized by r1 and c1. moreover, r1 and r2 act as the current restriction resistances at the time of reverse-connecting a charger, or at the time of connecting a charger which outputs the voltage exceeding the absolute maximum rating of this ic. please be sure to connect these components. z if the value of r1 is too large, the over-charge dete ction voltage and the over-discharge detection voltage will become high due to the current consumption of this ic. pl ease use the value within the limits shown in the table. 330 ? is recommended. z if the value of c1 is too small, this ic may be in a shut down state at the time of the discharge over-current or the load short-circuiting. please use the value within the limits shown in the table for stable operation. 0.1 f is recommended. z please use the value within the limits shown in the table abo ut the value of r2. in order to reduce the current at the time of reverse-connecting a charger, we recommend you to choose r1 and r2 so that the sum total become more than 4k ? . the recommended value of r2 is 3.9k ? . note) batter y r1 v dd v ss c1 d o c o v m r2 ic the connection diagram and each value of external components shown above are just recommendation. including a battery and fets, please determine the circ uit after sufficient evaluation about your actual application.
anasem inc. 10 rev. e09-06 a7b series single-cell li-ion / li-polymer battery protection ic .......... futu re of the analog world description of operation z normal condition this ic monitors the battery voltage (v dd ) and the voltage of v m terminal, and controls charge and discharge. if the battery voltage (v dd ) is in the range from the over-discharge detection voltage (vdc) to the over-charge detection voltage (vc) and the v m terminal voltage is in the range from the charge over-current detection voltage (vic) to the discharge over-current detection voltage (vidc), this ic turns on both the charge and discharge control fets. this state is called the normal conditi on, and charge and discharge are possible together. z discharge over-current detection, load short-circuiting detection when the discharge current becomes equal to or higher th an the specified value under the normal condition, and if the vm terminal voltage is in the r ange from the discharge over current det ection voltage (vidc) to the short- circuiting detection voltage (vshort) and that state is maintained during more than the discharge over-current detection delay time (tidc), this ic turns off the discharge control fet to stop discharge. this state is called the discharge over-current condition. at that time, if the vm terminal voltage is equal to or hi gher than vshort and that state is maintained during more than the load short-circuiting detection delay time (tshor t), this ic turns off the discharge control fet to stop discharge. this state is called the load short-circuiting detection condition. while load is connected, in both conditions, the v m terminal voltage equals to v dd potential due to the load, but it falls by the discharge over-current release resistanc e (rdwn) when the load is removed and the resistance between (+) and (-) terminals of battery pack (refer to ?typical connection diagram?) becomes larger than the value which enables the automatic return. then the v m terminal voltage becomes less than vidc, and if that state is maintained during more than the release delay time 1 (trel1), this ic returns to normal condition. z charge over-current detection when the charge current becomes equal to or higher than the specified value under t he normal condition, if the v m terminal voltage becomes less than the charge ove r-current detection voltage (vic) and that state is maintained during more than the charge over-current det ection delay time (tic), this ic turns off the charge control fet to stop charge. this state is call ed the charge over-current detection condition. then the v m terminal voltage becomes equals to or higher t han vic and that state is maintained during more than the release delay time 1 (trel1) w hen the charger is removed and the load is connected, this ic returns to the normal condition. if the v m terminal voltage becomes equal to or less than v ss -7v(typical), the charge over-current detection delay time (tic) changes as below. 8msec model 8msec (not changed) 125msec model 7msec (typical) 1.0sec model 56msec (typical) the resistance value between (+) and (-) terminals of batte ry pack for automatic return changes with battery voltage (v dd ) or vidc. the standard is expressed with the following equation. resistance value for automatic return = rdwn (v dd / vidc - 1) note) note)
anasem inc. 11 rev. e09-06 a7b series single-cell li-ion / li-polymer battery protection ic .......... futu re of the analog world z over-charge detection when the battery voltage (v dd ) under the normal condition becomes equal to or higher than the over-charge detection voltage (vc) and that state is maintained durin g more than the over-charge detection delay time (tc), this ic turns off the charge control fet and stops charge. this state is called the ove r-charge detection condition. release from the over-charge detection cond ition includes following three cases. (1) when v dd falls to vc-vhc without load and that state is ma intained during more than the delay time 2 (trel2), this ic turns on the charge control fet and returns to the normal condition. * vhc : over-charge hysteresis voltage (2) when the load is installed and discharge starts, the discharge current flows through the internal parasitic diode of the charge control fet. then the v m terminal voltage rises to only the vf voltage of the internal parasitic diode from v ss potential. at this time, if the v m terminal voltage is higher than the discharge over- current detection voltage (vidc) and v dd is equal to or less than vc, this ic returns to the normal condition when this state continues more than the delay time 2 (trel2). (3) in case (2), if the vm terminal voltage is higher th an the discharge over-current detection voltage (vidc) and v dd is equal to or higher than vc, battery is discharged until v dd becomes less than vc, and then this ic returns to the normal condition when this state continues more than the delay time 2 (trel2). z over-discharge detection when the battery voltage (v dd ) under the normal condition becomes equal to or less than the over-discharge detection voltage (vdc) and that state is maintained during more than the over-discharge detection delay time (tdc), this ic turns off the discharge control fet and st ops discharge. this state is called the over-discharge detection condition. the over-discharge detection conditi on is released when the charger is connected and following three cases are included. (1) when the charger is connected and charge starts, the charge current flows through the internal parasitic diode of the discharge control fet. v dd is higher than vdc and that state is maintained during more than the delay time 1 (trel1), this ic is released from over-d ischarge detection condition automatically and returns to the normal condition. (2) in case (1), if v dd is less than vdc, this ic returns to the normal condition when v dd becomes equal to or higher than vdc and this state continue s more than the delay time 1 (trel1). (3) although there is very little possibility, in case (1), if the v m terminal voltage is higher than the charge over- current detection voltage (vic) even if the charge current flows through the internal parasitic diode of the discharge control fet, this ic returns to the normal condition when v dd becomes equal to or higher than vdc+vhdc and this state continues more than delay time 1 (trel1). * vhdc = 0.4v (typical) ---- this voltage is tested in production, but is not specified. this ic stops all internal circuits ( shutdown condi tion ) after detecting the over-discharge and reduces current consumption. ( max 0.1 a, at v dd =1.8v ) z charge to 0v battery (1) 0v battery charge function if the voltage of charger (the voltage between v dd and v m ) is larger than the 0v battery charge starting charger voltage (vcha), 0v battery charge becomes possible when c o terminal outputs v dd terminal potential and turns on the charge control fet. (2) 0v battery charge inhibiting function if the voltage of the battery (v dd ) is equal to or less than the 0v battery charge inhibiting battery voltage (vinh), charge is inhibited when c o terminal outputs v m terminal potential and turns off a charge control fet.
anasem inc. 12 rev. e09-06 a7b series single-cell li-ion / li-polymer battery protection ic .......... futu re of the analog world timing chart z discharge over-current detection, load short-circuiting detection, charge over-current detection vc vdc vic vidc vshort : over-charge detection voltage : over-discharge detection voltage : charge over-current detection voltage : discharge over-current detection voltage : load short-circuiting detection voltage tic tidc tshort trel1 : charge over-current detection delay time : discharge over-current detection delay time : load short-circuiting detection delay time : release delay time 1 v c vdc v dd v dd vshort vic v m vidc v ss v dd d o v ss v dd c o v m v ss load connected load connected charger connected load connected tidc trel1 tshort tic trel1 trel1
anasem inc. 13 rev. e09-06 a7b series single-cell li-ion / li-polymer battery protection ic .......... futu re of the analog world z over-charge detection vc vdc vhc vidc : over-charge detection voltage : over-discharge detection voltage : over-charge hysteresis voltage : discharge over-current detection voltage tc trel2 : over-charge detection delay time : release delay time 2 v c vc-vhc vdc v dd v m vidc v ss v dd d o v ss v dd c o v m v ss char g er connected charger connected char g er connected load connected tc trel2 tc trel2 tc trel2 load connected
anasem inc. 14 rev. e09-06 a7b series single-cell li-ion / li-polymer battery protection ic .......... futu re of the analog world z over-discharge detection vc vdc vhdc vic vidc : over-charge detection voltage : over-discharge detection voltage : 0.4v (typical) : charge over-current detection voltage : discharge over-current detection voltage tdc trel1 : over-discharge detection delay time : release delay time 1 v c vc+vhdc vdc v dd v m vidc v ss v dd d o v ss v dd c o v m v ss load connected load connected load connected charger connected tdc trel1 tdc trel1 tdc trel1 charger connected charger connected v dd vic
anasem inc. 15 rev. e09-06 a7b series single-cell li-ion / li-polymer battery protection ic .......... futu re of the analog world typical characteristics z detection voltage over-charge detection voltage vs. temperature 4.305 4.295 4.285 4.275 4.265 4.255 4.245 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 vc ( v ) topr (c) over-discharge detection voltage vs. temperature 2.330 2.320 2.310 2.300 2.290 2.280 2.270 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 vdc ( v ) topr (c) charge over-current detection voltage vs. temperature -0.085 -0.090 -0.095 -0.100 -0.110 -0.115 -0.120 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 vic ( v ) topr (c) -0.105 -0.080 discharge over-current detection voltage vs. temperature 0.115 0.110 0.105 0.100 0.090 0.085 0.080 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 vidc ( v ) topr (c) 0.095 0.120 [a7be01aa] [a7be01aa] [a7be01aa] [a7be01aa] load short-circuiting detection voltage vs. temperature -1.15 -1.20 -1.25 -1.30 -1.40 -1.45 -1.50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 vshort ( v ) topr (c) -1.35 -1.10 based on v dd =3.5v
anasem inc. 16 rev. e09-06 a7b series single-cell li-ion / li-polymer battery protection ic .......... futu re of the analog world z 0v battery charge function z current consumption vcha ( v ) topr (c) [a7bxxxxa] 0v battery charge starting charger voltage vs. temperature 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 vinh ( v ) topr (c) [a7bxxxxb] 0v battery charge inhibiting battery voltage vs. temperature 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 isdn ( a ) topr (c) [a7be01aa] current consumption on shutdown vs. temperature 0.10 0.08 0.06 0.04 0.02 0.00 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 io p r ( a ) topr (c) [a7be01aa] current consumption on operation vs. temperature 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 current consumption vs. power supply voltage 6.0 5.0 4.0 3.0 2.0 1.0 0.0 0 1 2 3 4 5 6 7 8 io p r ( a ) v dd (v) [a7be01aa]
anasem inc. 17 rev. e09-06 a7b series single-cell li-ion / li-polymer battery protection ic .......... futu re of the analog world z resistance rco p ( k ? ) topr (c) c o terminal pch on resistance vs. temperature -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 rcon ( k ? ) topr (c) c o terminal nch on resistance vs. temperature -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 rdo p ( k ? ) topr (c) d o terminal pch on resistance vs. temperature -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 rdon ( k ? ) topr (c) d o terminal nch on resistance vs. temperature -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 discharge over-current release resistance vs. temperature 60 50 40 30 20 10 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 rdwn ( k ? ) topr (c)
anasem inc. 18 rev. e09-06 a7b series single-cell li-ion / li-polymer battery protection ic .......... futu re of the analog world z delay time tc ( sec ) topr (c) [a7be01aa] over-charge detection delay time vs. temperature 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 release delay time 2 vs. temperature 30 25 20 15 10 5 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 trel2 (msec) topr (c) [a7be01aa] over-discharge detection delay time vs. temperature 45 40 35 30 25 20 15 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 tdc (msec) topr (c) [a7be01aa] charge over-current detection delay time vs. temperature 11 10 9 8 6 5 4 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 tic ( msec ) topr (c) 7 12 [a7be01aa] discharge over-current detection delay time vs. temperature 11 10 9 8 6 5 4 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 tidc ( msec ) topr (c) 7 12 [a7be01aa] load short-circuiting detection delay time vs. temperature 450 400 350 300 200 150 100 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 tshort ( sec) topr (c) 250 500 [a7be01aa]
anasem inc. 19 rev. e09-06 a7b series single-cell li-ion / li-polymer battery protection ic .......... futu re of the analog world z characteristics related to the value of external components release delay time 1 vs. temperature 3.0 2.5 2.0 1.5 1.0 0.5 0.0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 trel1 (msec) topr (c) [a7be01aa] over-charge detection voltage vs. r1 4.278 4.277 4.276 4.275 4.273 4.272 4.271 0 100 200 300 400 500 600 700 800 900 1000 vc ( v ) r1 ( ? ) 4.274 4.279 [a7be01aa] over-discharge detection voltage vs. r1 2.302 2.301 2.300 2.299 0 100 200 300 400 500 600 700 800 900 1000 vdc ( v ) r1 ( ? ) 2.298 2.303 [a7be01aa] reverse connected charger current vs. r2 4.000 3.000 2.000 1.000 0 0.5 1.0 2.0 2.5 3. 0 3.5 4.0 5.0 5.5 6.0 ichar g er ( ma ) r2 (k ? ) 0.000 5.000 1.5 4.5 r1=330 ? vcharger=4.5v
anasem inc. 20 rev. e09-06 a7b series single-cell li-ion / li-polymer battery protection ic .......... futu re of the analog world package dimensions (sot-26) pin configuration pin no. symbol descriptions 1 d o fet gate connection for discharge control 2 v m voltage monitoring for charger negative 3 c o fet gate connection for charge control 4 nc n/c 5 v dd positive power input 6 v ss negative power input (unit : mm) marked side 2.90.2 1.60.2 1.90.2 0.95 1 2 3 4 6 5 0.95 0.40.1 0.00.10 1.10.1 2.90.2 0.16 +0.10 -0.15 0.60.1 2.80.2 0~0.1 0~10 front view top view bottom v iew (marked side) v ss v dd nc v m d o c o 1 2 3 4 5 6
anasem inc. 21 rev. e09-06 a7b series single-cell li-ion / li-polymer battery protection ic .......... futu re of the analog world package dimensions (son-5) pin configuration pin no. symbol descriptions 1 d o fet gate connection for discharge control 2 v dd positive power input 3 v ss negative power input 4 c o fet gate connection for charge control 5 v m voltage monitoring for charger negative (unit : mm) top view bottom view 2.00.1 0.60.05 0.650.1 0.650.1 0.11 0.60.05 0.10.1 front view 2.00.1 1.60.1 1.30.1 (marked side) 0.2 +0.10 -0 2.00.1 0.20.1 1 2 3 4 5 v ss v dd v m d o c o (marked side) 1 2 3 4 5
an a sem in c . anasem inc. may change the products described in this data sheet, or may discontinue production or services without any notice in order to supply the best produc ts through improve the design and performance. customers are recommended to obtain the latest data or information bef ore placing orders in order to make sure the data or information required is the newest. it is necessary for customers to fully understand the products described in this data sheet and to use it in accordance with its specific ations. the products described in this data sheet are not intended to use for the apparatus which have influence on human lives due to the failure or malfunction of the products. anasem inc. is not responsible for any suppo rt to customer?s application, product design, software performance, patent infringement or service. anasem in c. does not disclose or impl y a guarantee or description about being licensed based on patents, copy-rights, circui t location license, or other intellectual properties associated with the devices or combinat ions in which the products or servic e of anasem inc. are used or can be used, or which cover the methods. customers should not export, directly or indirectly, any products without obtaining required licenses and approvals in advance from appropriate government agencies. anasem

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