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t e c h t m t63h000 8 a tm technology, inc. reserves the right p. 1 publication date: dec . 200 3 to change products or specifications without notice. revision: a t63h000 8 a li - ion/polymer battery for one - cell pr o tector features l high voltage device is used for charger co n nection pins v - and cout pins: maximum 30v l internal high accuracy voltage detection circuit 1. overcharge detection voltage 3.9v to 4.4v (applicab le in 5mv step) accuracy : 2 5mv (+25 oc ) and 3 0mv ( - 5 oc to +55 oc ) 2. overcharge hysteresis voltage 0.0v to 0.4v ??????????????. accuracy : 2 5mv the overcharge hysteresis voltage can be selected from the range 0.0v to 0.4v in 50mv step. 3. over - discharge de tection voltage 2.0v to 3.0 v (10mv step) ???????. accuracy : 5 0mv . 4. over - discharge hysteresis voltage 0.0v to 0.7 v (*2) ??????????. accuracy : 5 0mv the over - discharge hysteresis voltage can be selected from the range 0.0v to 0.7v in 100mv step. 5. overcu rrent 1 detection voltage 0.05v to 0.3v (10mv step) ???????? accuracy : 1 5mv 6.o vercurrent 2 detection voltage 0. 5v (fixed) ?????????????.. accuracy : 1 00mv *1: overcharge release voltage = overcharge detection voltage - overcharge hysteresis voltage (wher e overcharge release voltage<3.8v is prohibited.) *2: over - discharge release voltage = over - discharge detection voltage + over - discharge hysteresis voltage (where over - di s charge release voltage>3.4v is prohibited.) l delay times (overcharge: t vdet1 , over - dis charge: t vdet2 , over - current 1: t vdet3 , over - current 2: t vdet4 ) are generated by an internal circuit. no external capacitor is necessary. ?????. accuracy: 2 0% l three - step over - current detection circuit is included . (over - current 1, over - current 2, and lo ad short - circuiting) . l either charge function or charge inhibition function for 0v battery can be selected. l charger detection function and abnormal charge current detection function 1. the over - discharge hysteresis is released by detecting negative voltage a t the v - pin ( - 0.7v typ.). (charger detection function) 2. when the output voltage of the do ut pin is high and the voltage at the v - pin is equal to or lower than the charger detection voltage ( - 0.7v typ.), the output voltage of the co ut pin goes low. (abn ormal charge current detection function) l low current consumption . 1. operation 3.0ua typ. 7.0 ua max. (idd). 2. power - down 0.1 ua max. (isb). l wide operating temperature range: - 40 oc to +85 oc l ultra small package ???????..sot - 23 - 6 ( 6 pin ) , snb(b)( 6pin ) . (snb type please contact sales).
t e c h t m t63h000 8 a tm technology, inc. reserves the right p. 2 publication date: dec . 200 3 to change products or specifications without notice. revision: a part number examples (*note 1) part no. over - charge dete c tion vol t age over - charge hysteresis voltage over - di s charge dete c tion voltage over - discharge hysteresis vol t age over - current 1 detection voltage 0v battery charge function m ar k ing t63h0008a - ax 4.2 8 v 0.2v 2.3v 0v 0.13v none 0 08a t63h0008a - bx 4. 30 v 0.1v 2.3v 0v 0.08v none 0 08b t63h0008a - cx 4.3 25 v 0.25v 2.5v 0.4v 0.15v no ne 0 08c t63h0008a - dx 4.35v 0.2v 2. 5 v 0.2v 0. 15 v none 00 8 d ? *note2 ?. ? . ? . ? . ? . note 1: this table is for sot - 23 - 6 pin package, snb type please contact sales. note 2: new model version and specific characteristics may be order by cu s tomer. general description the t63h0008a ser ies are lithium - ion/lithium polymer rechargeable battery protection ics i n corpora ting high - accuracy voltage detection circuit and delay circuit. the t63h0008a series are suitable for protection of single - cell lithium ion/lithium polymer battery packs from overcharge, ove r - discharge and over - current and 0v battery charge function. bloc k diagram vss + - vd2 vdd logic circuit dout + - vd4 v- cout oscillator + - vd1 level shift logic circuit + - vd3 counter short detector delay ds
t e c h t m t63h000 8 a tm technology, inc. reserves the right p. 3 publication date: dec . 200 3 to change products or specifications without notice. revision: a pin configurations (mark side) sot-23-6 top view 6 5 1 4 2 3 1 2 3 4 5 6 snb(a&b)-6pin top view (mark side) pin description sot - 23 - 6 s nb( a ) s nb(b) symbol pin description 1 1 3 dout output of over - discharge detection, cmos output 2 6 2 v - pin for charge negative input 3 5 1 cout output of over - charge detection, cmos ou t put 4 4 5 ds test pin for delay time measurement 5 2 6 vdd power supply 6 3 4 vss ground absolute maximum ratings (temp=25 o c) symbol item ratings unit vdd supply voltage - 0.3 to 9 v v - vct i nput voltage v - pin ct pin v dd - 30 to v dd +0.3 vss - 0.3 tov dd +0.3 v v vcout vdout output voltage cout pin dout pin v dd - 30 to v dd +0.3 vss - 0.3 tov dd +0.3 v v p d power dissipation 250 mw topt operating temperature range - 40 to85 oc tstg storage temperatu re range - 55 to 125 oc absolute maximum ratings are threshold limit values that must not be exceeded even for an instant under any conditions. moreover, such values for any two items must not be reached simultaneously. operation above these absolute maxim um ratings may cause degradation or permanent damage to the device. these are stress ratings only and do not necessarily imply functional operation below these limits.
t e c h t m t63h000 8 a tm technology, inc. reserves the right p. 4 publication date: dec . 200 3 to change products or specifications without notice. revision: a electrical characteristic 1 (temp=25oc) symbol pa rameter conditions min. typ. max. unit input voltage / operation voltage vdd1 operating input voltage voltage defined as vdd to vss 1.5 - 8 v vdd 2 operating input voltage voltage defined as vdd to v - 1.5 - 30 v current consumption idd normal operation cu r rent vdd=3. 5 v, v - =0v 1.0 3 .0 7.0 ua isb standby current vdd= v - =1.5v - -- 0. 1 ua output resistance rcouth cout pin h resistance vcout=3.0v,vdd=3.5v,v - =0v 2.5 5 10 k ohm rcoutl cout pin l resistance vcout=0.5,vdd=4.5v,v - =0v 2.5 5 10 k ohm rdouth dou t pin h resistance vdout=3.0v,vdd=3.5v,v - =0v 2.5 5 10 k ohm rdoutl dout pin l resistance vdout=0.5v,vdd=v - =1.8v 2.5 5 10 k ohm v - internal resistance rv - d internal resistance between v - and vdd vdd=1.8v,v - =0v 100 300 900 k ohm rv - s internal resistance be tween v - and vss vdd=3.5v,v - =1.0v 10 20 40 k ohm detection voltage ax 4.2 5 5 4.2 8 0 4. 305 v bx 4.275 4.300 4.325 v cx 4. 300 4. 3 25 4. 350 v vdet1 over - charge detection voltage vdet1=3.9v to 4.4v 5mv step - dx 4.325 4.350 4.375 v vhct1 over - charg e hysteresis voltage vhct1=0.0v to 0.4v 50mv step - - v hct1 - 0.025 v hct1 v hct1 +0.025 v tvdet1 output delay of over charge - 0.96 1.2 1.4 s ax /bx 2.25 2.30 2.35 v cx 2.45 2.50 2.5 5 v vdet2 over - discharge detection voltage vdet2=2.0v to 3.0v 10mv step - dx 2.45 2.50 2.55 v vhdt2 over - discharge hysteresis vol t age vh dt 2=0.0v to 0.7v 100mv step - - v hdt2 - 0.050 v hdt2 v hdt2 +0.050 v tvdet2 output delay of over - discharge - 115 144 173 ms vdet3 over - current 1 detection vol t age vdet3=0.05v to 0.3v 10 mv step detect rising edge of ?v - ? pin vol t age vdet3 - 0.015 vdet3 vdet3 +0.015 v tvdet3 over - current 1 detection delay time - 7.2 9 11 m s vdet 4 over - current 2 detection voltage - 0.4 0.5 0.6 v tvdet 4 over - current 2 detection delay time - 1.8 2.24 2.7 m s vdet5 charger detection voltage detect falling edge of ? v - ? pin voltage - 1.0 - 0.7 - 0.4 v vshort load short - circuiting detection voltage - 0.9 1.2 1.5 v t short load short - circuiting detection delay time - 220 320 380 us 0v battery char g ing function v0c ha 0v battery charge starting charge voltage applied for 0v battery charge function - - 1.5 v v0inh 0v battery charge inhibitio n charge voltage applied for 0v battery charge i n hibition function 0.6 1.0 1.4 v note: since products are not screened at low/ high temperature, the specification for this range is gua r anteed by design, not tested in production.
t e c h t m t63h000 8 a tm technology, inc. reserves the right p. 5 publication date: dec . 200 3 to change products or specifications without notice. revision: a electrical characteristic 2 *note 1 (temp= - 40 to 85 oc) symbol parameter conditions min. typ. max. unit input vo ltage / operation voltage vdd1 operating input voltage voltage defined as vdd to vss 1.5 - 8 v vdd 2 operating input voltage voltage defined as vdd to v - 1.5 - 30 v current consumption idd normal operation cu r rent vdd=3. 5 v, v - =0v 0.7 3 .0 8.0 ua isb st andby current vdd= v - =1.5v -- 0. 1 ua output resistance rcouth cout pin h resistance vcout=3.0v,vdd=3.5v,v - =0v 1.2 5 15 k ohm rcoutl cout pin l resistance vcout=0.5,vdd=4.5v,v - =0v 1.2 5 15 k ohm rdouth dout pin h resistance vdout=3.0v,vdd=3.5v,v - =0v 1.2 5 15 k ohm rdoutl dout pin l resistance vdout=0.5v,vdd=v - =1.8v 1.2 5 15 k ohm v - internal resistance rv - d internal resistance between v - and vdd vdd=1.8v,v - =0v 78 300 1310 k ohm rv - s internal resistance between v - and vss vdd=3.5v,v - =1.0v 7.2 20 44 k ohm detection voltage ax 4.2 25 4.2 8 0 4. 320 v bx 4.260 4.300 4.340 v cx 4. 270 4. 3 25 4. 365 v vdet1 over - charge detection voltage vdet1=3.9v to 4.4v 5mv step - dx 4.320 4.350 4.380 v vhct1 over - charge hysteresis voltage vhct1=0.0v to 0.4v 50mv ste p - - v hct 1 - 0.025 v hct 1 v hct 1 +0.025 v tvdet1 output delay of over charge - 0.7 1.2 2.0 s ax /bx 2.22 2.30 2.38 v cx 2.42 2.50 2.58 v vdet2 over - discharge detection voltage vdet2=2.0 to 3.0v 10mv step - dx 2.42 2.50 2.58 v vhdt2 over - discharge hysteresis vol t age vh d t2=0.0v to 0.7v 100mv step - - v hdt2 - 0.050 v hdt2 v hdt2 +0.050 v tvdet2 output delay of over - discharge - 80 144 245 ms vdet3 over - current 1 detection vol t age vdet3=0.05v to 0.3v 10mv step detect rising edge of ?v - ? pin vol t age vde t3 - 0.015 vdet3 vdet3 +0.015 v tvdet3 over - current 1 detection delay time - 5 9 15 ms vdet 4 over - current 2 detection voltage - 0.37 0.5 0.6 3 v tvdet 4 over - current 2 detection delay time - 1.2 2.24 3.8 ms vdet5 charger detection voltage detect falling e dge of ? v - ? pin voltage - 1.0 - 0.7 - 0.4 v vshort load short - circuiting detection voltage - 0.7 1.2 1.7 v t short load short - circuiting detection delay time - 150 320 540 us 0v battery charging fun c tion v0cha 0v battery charge starting charge voltage appli ed for 0v battery charge function - - 1.7 v v0inh 0v battery charge inhibitio n charge voltage applied for 0v battery charge i n hibition function 0.4 1.0 1.6 v note 1: since products are not screened at low/high temperature, the specification for this ran ge is gua r anteed by design, not tested in production.
t e c h t m t63h000 8 a tm technology, inc. reserves the right p. 6 publication date: dec . 200 3 to change products or specifications without notice. revision: a measurement circuits unless otherwise specified, the output voltage levels ? h ? and ? l ? at cout and dout pins are judged by the threshold voltage (1.0v) of the n channel fet. judge the cout pin level wi th respect to v - and the dout pin level with respect to vss. (1) measurement condition 1, measurement circuit 1 (overcharge detection voltage, overcharge hysteresis voltage) . the overcharge detection voltage (vdet1) is defined by the voltage between vdd and vss at which v co goes ? l ? from ? h ? when the voltage v1 is gradually increased from the starting cond i tion v1=3.5v and v2=0v. the overcharge hysteresis voltage (vhc t1 ) is then defined by the difference between the ove r charge detection voltage (v dd ) and the voltage between vdd and vss at which vco ut goes ?h? from ?l? when the voltage v1 is gradually decreased. (2) measurement condition 2, measurement circuit 2 ( over - discharge detection voltage, over - discharge hysteresis voltage ) the over - discharge d etection voltage (v det2 ) is defined by the voltage between vdd and vss at which v do goes ?l? from ?h? when the voltage v1 is gradually decreased from the starting cond i tion v1=3.5v and v2=0v. the over - discharge hysteresis voltage (v hd t2 ) is then defined by the di f ference between the over - discharge detection voltage (v det2 ) and the voltage between vdd and vss at which v do goes ?h? from ?l? when the voltage v1 is gradually increased. (3) measurement condition 3, measurement circuit 2 ( over - current 1 detec tion voltage, over - current 2 detection voltage, load short - circuiting detection vol t age ) the over - current 1 detection voltage is defined by the voltage between v - and vss whose delay time for changing vdo from ?h? to ?l? lies between the minimum and the ma ximum value of the over - current 1 detection delay time when the voltage v2 is increased rapidly within 10 us from the starting condition v1=3.5v and v2=0v. the over - current 2 detection voltage is defined by the voltage between v - and vss whose delay time f or changing vdo from ?h? to ?l? lies between the minimum and the maximum value of the over - current 2 detection delay time when the voltage v2 is increased rapidly within 10 us from the starting condition v1=3.5v and v2=0v. the load short - circuiting detectio n voltage is defined by the voltage between v - and vss whose delay time for changing vdo from ?h? to ?l? lies between the minimum and the maximum value of the load short - circuiting detection delay time when the voltage v2 is increased rapidly within 10 us f rom the starting condition v1=3.5v and v2=0v.
t e c h t m t63h000 8 a tm technology, inc. reserves the right p. 7 publication date: dec . 200 3 to change products or specifications without notice. revision: a (4) measurement condition 4, measurement circuit 2 ( charger detection voltage, abnormal charge current detection voltage ) set v1=1.8v and v2=0v. increase v1 gradually until v1=v det2 +(vhd t2 /2), then decrease v2 from 0 v gradually. the voltage between v - and vss when vdo goes ?h? from ?l? is the charger detection voltage (v det 5). charger detection voltage can be measured only in the product whose over - discharge hysteresis vhd t2 ? 0. set v1=3.5v and v2=0v , decre ase v2 from 0 v gradually. the voltage between v - and vss when vco goes ?l? from ?h? is the abnormal charge current detection voltage. the abnormal charge current dete c tion voltage has the same value as the charger detection voltage ( vdet 5 ) . (5) measure ment condition 5, measurement circuit 2 ( normal operation current consumption, power - down current consumption) set v1=3.5v and v2=0v under normal condition. the current idd flowing through vdd pin is the normal operation consumption current (i dd ). set v1=v 2=1.5v under over - discharge condition. the current idd flowing through vdd pin is the power - down current consumption ( isb ). (6) measurement condition 6, measurement circuit 3 ( internal resistance between v - and vdd, internal resistance between v - and vss) set v1=1.8v and v2=0v. the resistance between v - and vdd is the internal resistance ( rv - d ) b e tween v - and vdd. set v1=3.5v and v2=1.0v. the resistance between v - and vss is the internal resistance ( rv - s ) between v - and vss . (7) measurement condition 7, measurement circuit 4 ( co ut pin h resistance, co ut pin l resistance ) set v1=3.5v, v2=0v and v3=3.0v. co ut pin resistance is the co ut pin h resistance (rco ut h ). set v1=4.5v, v2=0v and v3=0.5v. co ut pin resistance is the co ut pin l resistance (rco ut l ) . (8 ) measurement condition 8, measurement circuit 4 ( do ut pin h resistance, do ut pin l resistance ) set v1=3.5v, v2=0v and v4=3.0v. do ut pin resistance is the do ut pin h resistance (rdo ut h ). set v1=1.8v, v2=0v and v4=0.5v. do ut pin resistance is the do ut pin l resistance (rdo ut l ). (9) measurement condition 9, measurement circuit 5 ( overcharge detection delay time, over - discharge detection delay time ) the overcharge detection delay time (t vdet1 ) is the time needed for vco to change from "h" to "l" just after the v1 rapid increase within 10 us from the overcharge detection voltage (v det1) - 0.2v to the
t e c h t m t63h000 8 a tm technology, inc. reserves the right p. 8 publication date: dec . 200 3 to change products or specifications without notice. revision: a overcharge detection voltage (v det1 ) + 0.2v in the condition v2=0v. the over - discharge detection delay time (t vdet2 ) is the time needed for vdo to change from " h" to "l" just after the v1 rapid decrease within 10 us from the over - discharge detection voltage (v det2 ) + 0.2v to the over - discharge detection voltage (v det2 ) - 0.2v in the condition v2=0v. (10) measurement condition 10, measurement circuit 5 ( over - curre nt 1 detection delay time, over - current 2 detection delay time, load short - circuiting detection delay time, abnormal charge current detection delay time ) set v1=3.5v and v2=0v. increase v2 from 0 v to 0.35 v momentarily (within 10 us ) the time needed for vdo to go ?l? is over - current 1 detection delay time (t vdet3 ). set v1=3.5v and v2=0v. increase v2 from 0 v to 0.7 v momentarily (within 10 us ) the time needed for vdo to go ?l? is over - current 2 detection delay time (t vdet4 ). set v1=3.5v and v2=0v. increas e v2 from 0 v to 1.6 v momentarily (within 10 us) the time needed for vdo to go ?l? is the load short - circuiting detection delay time (tshort ). set v1=3.5v and v2=0v. decrease v2 from 0 v to - 1.1 v momentarily (within 10 us ) the time needed for vco to go ?l? is the abnormal charge current detection delay time. the abnormal charge current detection delay time has the same value as the overcharge detection delay time. (11) measurement condition 11, measurement circuit 2 (product with 0v battery charge func tion) ( 0v battery charge starting charger voltage ) set v1=v2=0v and decrease v2 gradually. the voltage between vdd and v - when vco goes ?h? (v - + 0.1 v or higher) is the 0v battery charge starting charger voltage (v0cha ). (12) measurement condition 12, measurement circuit 2 (product with 0v battery charge inhibition function) ( 0v battery charge inhibition battery voltage) set v1=0v and v2= - 4v. increase v1 gradually. the voltage between vdd and vss when vco goes ?h? (v - + 0.1 v or higher) is the 0v batter y charge inhibition battery voltage (v0inh ).
t e c h t m t63h000 8 a tm technology, inc. reserves the right p. 9 publication date: dec . 200 3 to change products or specifications without notice. revision: a v1 ivm v2 v3 5 6 4 2 3 1 vdd vss ds v- cout dout a idd 5 6 4 2 3 1 vdd vss ds v- cout dout mesurement circuit 4 vdo t63h0008a v t63h0008a ido v2 mesurement circuit 2 vdo v t63h0008a mesurement circuit 5 vco 5 6 4 2 3 1 vdd vss ds v- cout dout ico 5 6 4 2 3 1 vdd vss ds v- cout dout a idd r1=470 v1 com com 5 6 4 2 3 1 vdd vss ds v- cout dout a t63h0008a vdo v2 com v v1 a v1 mesurement circuit 1 mesurement circuit 3 vco v2 v4 com com v1 v t63h0008a vco
t e c h t m t63h000 8 a tm technology, inc. reserves the right p. 10 publication date: dec . 200 3 to change products or specifications without notice. revision: a description of operation normal condition the t63h0008a monitors the voltage of the battery connected between vdd and vss pin and the voltage difference between v - and vss pin to control charging and di scharging. when the battery voltage is in the range from the over - discharge detection voltage ( vdet2 ) to the overcharge detection voltage ( vdet1 ), and the v - pin voltage is in the range from the charger detection voltage ( vdet 5) to the over - current 1 d e tec tion voltage (v det3 ), the ic turns both the charging and discharging control fets on. this condition is called the normal condition, and in this condition charging and discharging can be carried out freely. note: when a battery is connected to the ic for t he first time, the battery may not enter dischargeable state. in this case, set the v - pin voltage equal to the vss voltage or connect a charger to enter the normal condition. over - current condition (detection of over - current 1, over - current 2, and load sh ort - circuiting) when the condition in which v - pin voltage is equal to or higher than the over - current detection voltage, condition which caused by the excess of discharging current over a specified value, continues longer than the overcharge detection del ay time in a battery under the normal condition, the t63h0008a turns the di s charging control fet off to stop discharging. this condition is called the over - current condition. though the v - and vss pins are shorted by the rv - s resistor in the ic under the over - current condition, the v - pin voltage is pulled to the vdd level by the load as long as the load is connected. the v - pin voltage returns to v ss level when the load is released. the over - current condition returns to the normal condition when the imp edance between the eb+ and eb - pin becomes higher than the automatic r e coverable load resistance (see the equation [1] below), and the ic detects that the v - pin potential is lower than the over - current 1 detection voltage (v det3 ). note: the automatic reco verable load resistance changes depending on the battery voltage and over - cur r ent 1detection voltage settings. overcharge condition when the battery voltage becomes higher than the overcharge detection voltage ( vdd ) during charging under the normal conditi on and the detection continues for the overcharge detection delay time (t vdet1 ) or longer, the t63h0008a turns the charging control fet off to stop charging. this condition is called the ove r charge condition. the overcharge condition is released by the fol lowing two cases ((1) and (2)): (1) when the battery voltage falls below the voltage difference, the overcharge detection voltage (v det1 ) - overcharge detection hysteresis voltage (vhc t1 ), the t63h0008a turns the charging control fet on and turns to the normal condition. (2) when a load is connected and discharging starts, the t63h0008a turns the charging control fet on and returns to the normal condition. the mechanism is : just after the load is connected and discharging starts, the discharging current flows through the parasitic diode in the charging control fet. at this moment v - pin p o tential increases momentarily voltage of the parasitic diode from the vss level when the v - pin voltage goes higher than the over - current 1 detection voltage, and provid ed that the battery voltage goes
t e c h t m t63h000 8 a tm technology, inc. reserves the right p. 11 publication date: dec . 200 3 to change products or specifications without notice. revision: a under the overcharge detection voltage by the internal impedance, the t63h0008a release the overcharge cond i tion. note: (1). if the battery is charged to a voltage higher than the overcharge detection voltage (v d et1) and the battery voltage does not fall below the ove r charge detection voltage (v d et1) even when a heavy load is connected, the detection of over - current 1 , over - current 2 and load short - circuiting does not work .since an actual battery has the internal i m pedance o f several dozens of mw, the battery voltage drops immediately after a heavy load which causes over - current is connected, and the detection of over - current 1, over - current 2 and load short - circuiting then works.. (2). when a charger is connected after the overcharge detection, the overcharge condition is not released even if the battery voltage is below the overcharge detection voltage vdet1. the ove r charge condition is released when the v - pin voltage goes over the charger detection voltage v det 5 by re moving the charger. over - discharge condition when the battery voltage falls below the over - discharge detection voltage (v det2 ) during discharging under the normal condition and the detection continues for the over - discharge detection delay time (t vdet2 ) or longer, the t63h0008a turns the discharging control fet off to stop discharging. this condition is called the over - discharge condition. when the discharging control fet turns off, the v - pin voltage is pulled up by the rv - d resistor between v - and vdd in the ic. the voltage difference between v - and vdd then falls bellow 1.3v (typ.), the current consumption is reduced to the power - down current consumption ( isb ). this condition is called the power - down condition.the power - down condition is r e leased when a c harger is connected and the voltage difference between v - and vdd becomes 1.3 v (typ.) or higher. moreover when the battery voltage becomes the over - discharge detection voltage or higher, the t63h0008a turns the discharging fet on and returns to the normal condition. charger detection when a battery in the over - discharge condition is connected to a charger and provided that the v - pin voltage is lower than the charger detection voltage (v det 5), the t63h0008a releases the over - discharge condition and turns the discharging control fet on as the battery voltage becomes equal to or higher than the over - discharge detection voltage (v det2 ) since the charger detection function works. this action is called charger detection. when a battery in the over - discharge co ndition is connected to a charger and provided that the v - pin voltage is not lower than the charger detection voltage (v det 5), the t63h0008a releases the over - di s charge condition when the battery voltage reaches the over - discharge detection voltage (v det2 ) + over - discharge hysteresis (vhd t2 ) or higher. abnormal charge current detection if the v - pin voltage falls below the charger detection voltage (v det 5) during charging under normal condition and it continues for the overcharge detection delay time (t v det1 ) or longer, the charging control fet turns off and charging stops. this action is called the abnormal charge current detection. abnormal charge current detection works when the do ut pin voltage is ? h ? and the v - pin voltage falls below the charger det ection voltage ( vdet 5). consequently, if an abnormal charge current flows to an over - discharged battery, the t63h0008a turns the charging control fet off and stops charging after the battery voltage becomes higher than the over - discharge detection voltage which make the do ut pin
t e c h t m t63h000 8 a tm technology, inc. reserves the right p. 12 publication date: dec . 200 3 to change products or specifications without notice. revision: a voltage ? h ? , and still after the overcharge detection delay time (t vdet1 ) elapses . abnormal charge current detection is released when the voltage difference between v - pin and vss pin becomes less than charger detection voltage v de t 5. delay circuits the detection delay times are generated by dividing the approximate 7 khz clock with a counter. note . the detection delay time for over - current 2 and load and short - circuiting start when the over - current 1 is detected. as soon as the ov er - current 2 or load short - circuiting is detected over the detection delay time for over - current 2 or load short - circuiting after the detection of over - current 1, the t63h0008a turns the discharging control fet off. vdd vdd time time vdet3 vss vss vdet4 (tvdet4) over-current 2 detection delay time when the o ver - current is detected and it continues for longer than the over - discharge detection delay time without releasing the load, the condition changes to the power - down condition when the battery voltage falls below the over - discharge detection voltage. when t he battery voltage falls below the over - discharge detection voltage due to the over - current, the t63h0008a turns the discharging control fet off by the over - current detection. and in this case the r e covery of the battery voltage is so slow that the battery voltage after the over - discharge detection delay time is still lower than the over - discharge detection voltage, the t63h0008a transits to the power - down cond i tion.
t e c h t m t63h000 8 a tm technology, inc. reserves the right p. 13 publication date: dec . 200 3 to change products or specifications without notice. revision: a d s pin the d s pin is a test pin for delay time measurement and it should be open in the a ctual application. if a capacitor whose capacitance is larger than 100pf or a resister whose resistance is larger than 100kw is co n nected to this pin, error may occur in the delay time. 0v battery charge function (*1) (*2) this function is used to recharg e the connected battery whose voltage is 0v due to the self - discharge. when the 0v battery charge starting charger voltage (v0cha ) or higher is applied between eb+ and eb - pins by connecting a charger, the charging control fet gate is fixed to vdd pin vol tage. when the voltage between the gate and source of the charging control fet becomes equal to or higher than the turn - on voltage by the charger voltage, the charging control fet turns on to start charging. at this time, the di s charging control fet is off and the charging current flows through the internal parasitic diode in the discharging control fet. when the battery voltage becomes equal to or higher than the over - discharge release voltage, the t63h0008a enters the normal condition. 0v battery charge i nhibition function (*1) this function inhibits the recharging when a battery which is short - circuited (0v) internally is connected. when the battery voltage is 1.0 v (typ.) or lower, the charging control fet gate is fixed to eb - pin voltage to inhibit char ging. when the battery voltage is the 0v battery charge inhibition battery voltage (v0inh ) or higher, charging can be performed. (*1) some battery providers do not recommend charging for completely self - discharged battery. please ask battery providers bef ore determining the 0v battery charge function. (*2) the 0v battery charge function has higher priority than the abnormal charge current detection fun c tion. consequently, a product with the 0v battery charge function charges a battery forcedly and abnormal charge current cannot be detected when the battery voltage is low.
t e c h t m t63h000 8 a tm technology, inc. reserves the right p. 14 publication date: dec . 200 3 to change products or specifications without notice. revision: a operation timing chart vdet1 vdet1-vhct1 vdet2+vhdt2 vdet2 battery voltage vdd vss vdd vss vdd vdet3 vss vdet5 dout pin cout pin v- pin 1.operation timing chart charger connection tvdet1 tvdet2 load connection mode (a) (b) (a) (c) (a) note:(a):normal condition, (b):overcharge conditing, (c):overdischarge condition, (d):overcurrent condition the charge is supposed to charge with constant current.
t e c h t m t63h000 8 a tm technology, inc. reserves the right p. 15 publication date: dec . 200 3 to change products or specifications without notice. revision: a vdet1 vdet1-vhct1 vdet2+vhdt2 vdet2 battery voltage vdd vss vdd vss vdd vdet4 vdet3 vss dout pin cout pin v- pin 2.over-current detection charger connection load connection mode (a) (d) (d) (a) (a) note:(a):normal condition, (b):overcharge conditing, (c):overdischarge condition, (d):overcurrent condition the charge is supposed to charge with constant current. vshort tvdet3 tshort tvdet4 (a) (d)
t e c h t m t63h000 8 a tm technology, inc. reserves the right p. 16 publication date: dec . 200 3 to change products or specifications without notice. revision: a vdet1 vdet1-vhct1 vdet2+vhdt2 vdet2 battery voltage vdd vss vdd vss vdd vdet5 vss dout pin cout pin v- pin 3.charger detection charger connection load connection mode (a) (c) (a) note:(a):normal condition, (b):overcharge conditing, (c):overdischarge condition, (d):overcurrent condition the charge is supposed to charge with constant current. note2:in case v- pin voltage < vdet5 over-discharge is released at the overdischarge detection voltage(vdet2) tvdet2 note:2
t e c h t m t63h000 8 a tm technology, inc. reserves the right p. 17 publication date: dec . 200 3 to change products or specifications without notice. revision: a vdet1 vdet1-vhct1 vdet2+vhdt2 vdet2 battery voltage vdd vss vdd vss vdd vdet5 vss dout pin cout pin v- pin 4.abnormal charge current detection charger connection load connection mode (a) (c) (a) note:(a):normal condition, (b):overcharge conditing, (c):overdischarge condition, (d):overcurrent condition the charge is supposed to charge with constant current. note2:abnormal charge current detection delay time (=overcharge detection delay time(tvdet1) tvdet2 tvdet1 (a) (b) (note 2)
t e c h t m t63h000 8 a tm technology, inc. reserves the right p. 18 publication date: dec . 200 3 to change products or specifications without notice. revision: a application circuits t63h0008a battery fet1 r1=470ohm 5 6 4 2 3 1 vdd_1 vss ds v- cout dout r2 2k eb- eb+ c1 0.1uf fet2 table constant for external components symbol parts purpose reco m mend min. max. remarks fet1 n channel mo s fet charge co n trol --- --- --- *1) 0.4 v = threshold vol t age = over - discharge detection vol t age, gate to source withstand vol t age = charger vol t age . fet2 n chan nel mo s fet discharge co n trol --- --- --- *1) 0.4 v = threshold vol t age = over - discharge detection vol t age, gate to source withstand vol t age = charger vol t age . r1 resistor esd prote c tion for power flu c tuation 470ohm 300ohm 1k ohm *2) set resistance so tha t 2 x r1 = r2 c1 capacitor for power fluctu a tion 0.1uf 0.022 uf 1.0uf *3) install a capacitor of 0.022uf of higher between vdd and vss. r2 resistor protection for r e verse connection of a charger 2kohm 300ohm 4k ohm *4) to prevent current when a charger is reversely connected. select a larger resistance within the range from 300ohm to 4kohm. *1) if an fet with a threshold voltage of 0.4 v or lower is used, the fet may not cut the charging current. if an fet with a threshold voltage equal to or higher than the over - discharge detection voltage is used, discharging may be stoped before over - discharge is detected. if the withstand voltage between the gate and source is lower than the charger voltage, the fet may d e stroy. *2) if r1 has a high resistance, the vol tage between vdd and vss may exceed the absolute maximum rating
t e c h t m t63h000 8 a tm technology, inc. reserves the right p. 19 publication date: dec . 200 3 to change products or specifications without notice. revision: a when a charger is connected reversely since the current flows from the charger to the ic. insert a resistor of 300w or higher as r1 for esd protection. if r1 has a high resistance, the overc harge detection voltage increases by ic current consumption. *3) if a capacitor of less than 0.022 uf is installed as c1, do ut may oscillate when load short - circuiting is detected. be sure to install a capacitor of 0.022 uf or higher as c1. *4) if r2 has a r esistance higher than 4kw, the charging current may not be cut when a high - voltage charger is connected. note: (1). the d s pin should be open. (2). the above connection diagram and constants do not guarantee proper operation. evaluate upon actual applic a tio n and determine constants properly. precautions pay attention to the operating conditions for input/output voltage and load current so that the loss in the ic does not exceed the permissible loss (power dissipation) of the package.
t e c h t m t63h000 8 a tm technology, inc. reserves the right p. 20 publication date: dec . 200 3 to change products or specifications without notice. revision: a package dimension (unit: mm) sot - 23 - 6 taping specification (unit: mm) sot - 23 - 6

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