View S-8243AADFT_6841669.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

rev.1.2 _00 battry protection ic for 3-serial or 4-serial pack s-8243a/b series seiko instruments inc. 1 the s-8243a/b is a series of lithium-ion rechargeable battery protection ics incorporating high-accuracy battery protection circuits, a battery monitor amp and a voltage regulator which drives microcomputer and gas gauge ic. combining microcomputer or gas gauge ic facilitates displaying a remaining amount of battery. the s-8243a/b is suitable for protection of 3-serial or 4-serial cell lithium-ion battery packs from overcharge, overdischarge and overcurrent. ? features (1) high-accuracy voltage detection for each cell ? overcharge detection voltage n (n = 1 to 4) 3.9 v to 4.4 v (50 mv step) accuracy 25 mv ? hysteresis voltage n (n = 1 to 4) of overcharge detection ? 0.10 v to ? 0.40 v (50 mv step) or 0 v accuracy 50 mv (overcharge release voltage n ( = overcharge detection voltage n + hysteresis voltage n) can be selected within the range 3.8 v to 4.4 v.) ? overdischarge detection voltage n (n = 1 to 4) 2.0 v to 3.0 v (100 mv step) accuracy 80 mv ? hysteresis voltage n (n = 1 to 4) of overdischarge detection 0.20 v to 0.70 v or 0 v (100 mv step) accuracy 100 mv (overdischarge release voltage n ( = overdischarge detection voltage n + hysteresis voltage n) can be selected within the range 2.0 v to 3.4 v.) (2) three-level overcurrent protection including protection for short-circuiting ? overcurrent detection voltage 1 0.05 v to 0.3 v (50 mv step) accuracy 25 mv ? overcurrent detection voltage 2 0.5 v accuracy 100 mv ? overcurrent detection voltage 3 v dd /2 accuracy 15 % (3) delay times for overcharge detection, overdischar ge detection and overcurrent detection 1 can be set by external capacitors. (delay times for overcurrent detec tion 2 and 3 are fixed internally.) (4) charge/discharge operation can be c ontrolled through the control pins. (5) high-accuracy battery monitor amp gamp = v battery 0.2 1.0% (6) voltage regulator v out = 3.3 v 2.4 % (3 ma max.) (7) high input-voltage device absolute maximum rating: 26 v (8) wide operating voltage range 6 v to 18 v (9) wide operating temperature range: ? 40c to + 85 c (10) low current consumption operation mode 120 a max. power down mode 0.1 a max. (11) small package 16-pin tssop package ? applications ? lithium-ion rechargeable battery packs ? lithium- polymer rechargeable battery packs
battery protection ic for 3-serial or 4-serial pack s-8243a/b series rev.1.2 _00 seiko instruments inc. 2 ? package package name drawing code package tape reel 16-pin tssop ft016-a ft016-a ft016-a
battery protection ic for 3-serial or 4-serial pack rev.1.2 _00 s-8243a/b series seiko instruments inc. 3 ? block diagrams s-8243a series battery protection vc3 vc2 vc1 vdd dop cop vmp vreg vbatout 200 na ctl1 ctl2 ctl3 1.4 m ? 1.4 m ? 1 m ? 1 m ? 5 m ? 5 m ? ctl4 vreg vreg vreg delay control rvcm,rvsm dop,cop, delay delay delay battery monitor amp voltage regulator 1.4 m ? 1.4 m ? 1.4 m ? 1.4 m ? 660 k ? 660 k ? 440 k ? cct vss cdt battery selection remark1. diodes in the figure are parasitic diodes. 2. numerical values are typical values. figure 1
battery protection ic for 3-serial or 4-serial pack s-8243a/b series rev.1.2 _00 seiko instruments inc. 4 s-8243b series battery protection vc3 vc2 vc1 vdd dop cop vmp vreg vbatout 200 na ctl1 ctl2 ctl3 1.4 m ? 1.4 m ? 1 m ? 1 m ? 5 m ? 5 m ? ctl4 vreg vreg vreg delay control rvcm, rvsm dop, cop, delay delay delay battery monitor amp voltage regulator 1.4 m ? 1.4 m ? 1.4 m ? 1.4 m ? 660 k ? 660 k ? 440 k ? cct vss cdt battery selection remark1. diodes in the figure are parasitic diodes. 2. numerical values are typical values. figure 2
battery protection ic for 3-serial or 4-serial pack rev.1.2 _00 s-8243a/b series seiko instruments inc. 5 ? product name structure 1. product name s ? 8243 x xx ft indicates package type and packing specification of ic *1 ft : 16-pin tssop, tape serial code *2 sequentially set from aa to zz product series name a : 3-cell b : 4-cell *1. refer to the taping specific ations at the end of this book. *2. refer to the ? 2. product name list ?. 2. product name list table 1 s-8243a series (for 3-serial cell) product name overcharge detection voltage [v cu ] hysteresis voltage for overcharge detection [v hc ] overdischarge detection voltage [v dl ] hysteresis voltage for overdischarge detection [v hd ] overcurrent detection voltage1 [v iov1 ] 0 v battery charging function s-8243aacft 4.35 0.025 v ? 0.15 0.05 v 2.40 0.08 v 0.20 0.10 v 0.20 0.025 v available S-8243AADFT 4.35 0.025 v ? 0.35 0.05 v 2.40 0.08 v 0 v 0.20 0.025 v available note change in the detection voltage is ava ilable in products other than listed abov e. contact the sii sales office. table 2 s-8243b series (for 4-serial cell) product name overcharge detection voltage [v cu ] hysteresis voltage for overcharge detection [v hc ] overdischarge detection voltage [v dl ] hysteresis voltage for overdischarge detection [v hd ] overcurrent detection voltage1 [v iov1 ] 0 v battery charging function s-8243badft 4.35 0.025 v ? 0.25 0.05 v 2.40 0.08 v 0 v 0.25 0.025 v available s-8243baeft 4.35 0.025 v ? 0.15 0.05 v 2.40 0.08 v 0.20 0.10 v 0.20 0.025 v available s-8243bafft 4.25 0.025 v ? 0.25 0.05 v 2.40 0.08 v 0 v 0.20 0.025 v available note change in the detection voltage is ava ilable in products other than listed abov e. contact the sii sales office. ? absolute maximum ratings table 3 (ta = 25 c unless otherwise specified) parameter symbol applied pins rating unit input voltage vdd v ds ? v ss ? 0.3 to v ss + 26 v input voltage v in vc1, vc2, vc3, cct, cdt v ss ? 0.3 to v dd + 0.3 v vmp pin input voltage v mp vmp v ss ? 0.3 to v ss + 26 v dop pin output voltage v dop dop v ss ? 0.3 to v dd + 0.3 v cop pin output voltage v cop cop v ss ? 0.3 to v ss + 26 v vreg pin output voltage v out vreg v ss ? 0.3 to v dd + 0.3 v ctl1 pin input voltage v ctl1 ctl1 v ss ? 0.3 to v dd + 0.3 v ctl2 to ctl4 pin input voltage v ctln ctl2, ctl3, ctl4 v ss ? 0.3 to v out + 0.3 v cell voltage output voltage v batout vbatout v ss ? 0.3 to v out + 0.3 v power dissipation p d ? 300 mw operation ambient temperature t opr ? ? 40 to + 85 c storage temperature t stg ? ? 40 to + 125 c caution the absolute maximum ratings are rated values exceeding which the product could suffer physical damage. these values must therefore not be exceeded under any conditions.
battery protection ic for 3-serial or 4-serial pack s-8243a/b series rev.1.2 _00 seiko instruments inc. 6 ? pin configuration 16-pin tssop top view vdd dop cop vmp vc1 vc2 vc3 vss vreg ctl1 ctl2 ctl3 ctl4 vbatout cct cdt 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 figure 3 table 4 pin description (s-8243a series) no. name description 1 vdd positive power input pin. ba ttery 1 positive voltage connection pin 2 dop fet gate connection pin for discharge control (cmos output) 3 cop fet gate connection pin for c harge control (nch open-drain output) 4 vmp voltage detection pin between vdd and vmp (over current detection pin) 5 vc1 no connection 6 vc2 battery1 negative voltage and batte ry 2 positive voltage connection pin 7 vc3 battery 2 negative voltage and batte ry 3 positive voltage connection pin 8 vss negative power input pin. ba ttery 3 negative voltage connection pin 9 cdt capacitor connection pin for ov erdischarge detection delay time and over current detection1 delay time 10 cct capacitor connection pin for overcharge detection delay time 11 vbatout output pin for each battery voltage and offset 12 ctl4 battery selection control signal input 13 ctl3 battery selection control signal input 14 ctl2 charge and discharge control signal input 15 ctl1 charge and discharge control signal input 16 vreg 3.3 v volt age regulator output table 5 pin description (s-8243b series) no. name description 1 vdd positive power input pin. ba ttery 1 positive voltage connection pin 2 dop fet gate connection pin for discharge control (cmos output) 3 cop fet gate connection pin for c harge control (nch open-drain output) 4 vmp voltage detection pin between vdd and vmp (over current detection pin) 5 vc1 battery1 negative voltage and batte ry 2 positive voltage connection pin 6 vc2 battery 2 negative voltage and batte ry 3 positive voltage connection pin 7 vc3 battery 3 negative voltage and batte ry 4 positive voltage connection pin 8 vss negative power input pin. ba ttery 4 negative voltage connection pin 9 cdt capacitor connection pin for ov erdischarge detection delay time and over current detection1 delay time 10 cct capacitor connection pin for overcharge detection delay time 11 vbatout output pin for each battery voltage and offset 12 ctl4 battery selection control signal input 13 ctl3 battery selection control signal input 14 ctl2 charge and discharge control signal input 15 ctl1 charge and discharge control signal input 16 vreg 3.3 v volt age regulator output
battery protection ic for 3-serial or 4-serial pack rev.1.2 _00 s-8243a/b series seiko instruments inc. 7 ? electrical characteristics (1) s-8243a series table 6 (1/2) (ta = 25 c unless otherwise specified) parameter symbol conditions min. typ. max. unit test circuit battery protection overcharge detection voltage n n = 1, 2, 3 v cun 3.9 v to 4.4 v, 50 mv step v cun ? 0.025 v cun v cun + 0.025 v 4 hysteresis voltage n of overcharge detection n = 1, 2, 3 v hcn ? 0.10 v to ? 0.40 v, and 0 v v hcn ? 0.05 v hcn v hcn + 0.05 v 4 overdischarge detection voltage n = 1, 2, 3 v dln 2.0 v to 3.0 v, 100 mv step v dln ? 0.08 v dln v dln + 0.08 v 4 hysteresis voltage n of overdischarge detection n = 1, 2, 3 v hdn 0.20 v to 0.70 v, and 0 v v hdn ? 0.10 v hdn v hdn + 0.10 v 4 overcurrent detection voltage 1 v iov1 0.05 v to 0.3 v, 50 mv step v iov1 ? 0.025 v iov1 v iov1 + 0.025 v 4 overcurrent detection voltage 2 v iov2 ? v dd ? 0.60 v dd ? 0.50 v dd ? 0.40 v 4 overcurrent detection voltage 3 v iov3 ? v dd 0.425 v dd 0.5 v dd 0.575 v 4 temperature coefficient for detection and release voltage *1 t coe1 ta = ? 5 c to + 55 c ? 1.0 0 1.0 mv/ c 4 temperature coefficient for overcurrent detection voltage *2 t coe2 ta = ? 5 c to + 55 c ? 0.5 0 0.5 mv/ c 4 0 v battery charging function 0 v battery charge starting charger voltage v 0cha 0 v battery charging available ? 0.8 1.5 v 7 0 v battery charge inhibition battery voltage v 0inh 0 v battery charging unavailable 0.4 0.7 1.1 v 7 internal resistance internal resistance between vmp and vdd r vdm v1 = v2 = v3 = 3.5 v 500 1100 2400 k ? 8 internal resistance between vmp and vss r vsm v1 = v2 = v3 = 1.8 v 300 700 1500 k ? 8 voltage regulator output voltage v out v dd = 14 v, i out = 3 ma 3.221 3.300 3.379 v 2 line regulation ? v out1 v dd = 6 v 18 v, i out = 3 ma ? 5 15 mv 2 load regulation ? v out2 v dd = 14 v, i out = 5 a 3 ma ? 15 30 mv 2 battery monitor amp input offset voltage n n = 1, 2, 3 v offn v1 = v2 = v3 = 3.5 v 60 165 270 mv 3 voltage gain n n = 1, 2, 3 gampn v1 = v2 = v3 = 3.5 v 0.2 0.99 0.2 0.2 1.01 ? 3 input voltage, operating voltage operating voltage between v dd and v ss v dsop ? 6 ? 18 v 4 ctl1 input voltage for high v ctl1h ? v dd 0.8 ? ? v 6 ctl1 input voltage for low v ctl1l ? ? ? v dd 0.2 v 6 ctln input voltage for high n = 2, 3, 4 v ctlnh ? v out 0.9 ? v out v 3, 6 ctln input voltage for low n = 2, 3, 4 v ctlnl ? ? ? v out 0.1 v 3, 6
battery protection ic for 3-serial or 4-serial pack s-8243a/b series rev.1.2 _00 seiko instruments inc. 8 table 6 (2/2) parameter symbol remarks min. typ. max. unit test circuit input current current consumption at not monitoring v batout i ope v1 = v2 = v3 = 3.5 v, v mp = v dd ? 65 120 a 1 current consumption at power down i pdn v1 = v2 = v3 = 1.5 v, v mp = v ss ? ? 0.1 a 1 current for vcn at not monitoring v batout (n = 2, 3) i vcnn v1 = v2 = v3 = 3.5 v ? 0.3 0 0.3 a 3 current for vc2 at monitoring of v batout i vc2 v1 = v2 = v3 = 3.5 v ? 2.0 7.2 a 3 current for vc3 at monitoring of v batout i vc3 v1 = v2 = v3 = 3.5 v ? 1.0 4.0 a 3 current for ctl1 at low i ctl1l v1 = v2 = v3 = 3.5 v, v ctl1 = 0 v ? 0.4 ? 0.2 ? a 5 current for ctln at high n = 2,3,4 i ctlnh v ctln = v out ? 2.5 5 a 9 current for ctln at low n = 2,3,4 i ctlnl v ctln = 0 v ? 5 ? 2.5 ? a 9 output current leak current cop i coh v cop = 24 v ? ? 0.1 a 9 sink current cop i col v cop = v ss + 0.5 v 10 ? ? a 9 source current dop i doh v dop = v dd ? 0.5 v 10 ? ? a 9 sink current dop i dol v dop = v ss + 0.5 v 10 ? ? a 9 source current v batout i vbath v batout = v dd ? 0.5 v 100 ? ? a 9 sink current v batout i vbatl v batout = v ss + 0.5 v 100 ? ? a 9 applied to s-8243aacft and S-8243AADFT parameter symbol conditions min. typ. max. unit test circuit delay time overcharge detection delay time t cu c ct = 0.1 f 0.5 1.0 1.5 s 5 overdischarge detection delay time t dl c dt = 0.1 f 50 100 150 ms 5 overcurrent detection delay time 1 t lov1 c dt = 0.1 f 5 10 15 ms 5 overcurrent detection delay time 2 t lov2 ? 1.5 2.5 4.0 ms 4 overcurrent detection delay time 3 t lov3 ? 100 300 600 s 4 *1. temperature coefficient for detection and re lease voltage is applied to overcharge det ection voltage n, overcharge release volt age n , overdischarge detection voltage n, and overdischarge release voltage n. *2. temperature coefficient for overcurrent detection volt age is applied to over current detection voltage 1 and 2.
battery protection ic for 3-serial or 4-serial pack rev.1.2 _00 s-8243a/b series seiko instruments inc. 9 (2) s-8243b series table 7 (1/2) (ta = 25 c unless otherwise specified) parameter symbol conditions min. typ. max. unit test circuit detection voltage overcharge detection voltage n n = 1, 2, 3, 4 v cun 3.9 v to 4.4 v, 50 mv step v cun ? 0.025 v cun v cun + 0.025 v 4 hysteresis voltage n of overcharge detection n = 1, 2, 3, 4 v hcn ? 0.10 v to ? 0.40 v, and 0 v v hcn ? 0.05 v hcn v hcn + 0.05 v 4 overdischarge detection voltage n = 1, 2, 3, 4 v dln 2.0 v to 3.0 v, 100 mv step v dln ? 0.08 v dln v dln + 0.08 v 4 hysteresis voltage n of overdischarge detection n = 1, 2, 3, 4 v hdn 0.20 to 0.70, and 0 v hdn ? 0.10 v hdn v hdn + 0.10 v 4 overcurrent detection voltage 1 v iov1 0.05 v to 0.3 v, 50 mv step v iov1 ? 0.025 v iov1 v iov1 + 0.025 v 4 overcurrent detection voltage 2 v iov2 ? v dd ? 0.60 v dd ? 0.50 v dd ? 0.40 v 4 overcurrent detection voltage 3 v iov3 ? v dd 0.425 v dd 0.5 v dd 0.575 v 4 temperature coefficient for detection and release voltage *1 t coe1 ta = ? 5 c to + 55 c ? 1.0 0 1.0 mv/ c4 temperature coefficient for overcurrent detection voltage *2 t coe2 ta = ? 5 c to + 55 c ? 0.5 0 0.5 mv/ c4 0 v battery charging function (the 0 v battery function is either "0 v battery charging is allowed." or "0 v battery charging is inhibited." depending upon the product type.) 0 v battery charge starting charger voltage v 0cha 0 v battery charging allowed ? 0.8 1.5 v 7 0 v battery charge inhibition battery voltage v 0inh 0 v battery charging inhibited 0.4 0.7 1.1 v 7 internal resistance internal resistance between vmp and vdd r vdm v1 = v2 = v3 = v4 = 3.5 v 500 1100 2400 k ? 8 internal resistance between vmp and vss r vsm v1 = v2 = v3 = v4 = 1.8 v 300 700 1500 k ? 8 voltage regulator output voltage v out v dd = 14v, i out = 3 ma 3.221 3.300 3.379 v 2 line regulation ? v out1 v dd = 6 v 18 v, i out = 3 ma ? 5 15 mv 2 load regulation ? v out2 v dd = 14 v, i out = 5 a 3 ma ? 15 30 mv 2 battery monitor amp input offset voltage n n = 1, 2, 3, 4 v offn v1 = v2 = v3 = v4 = 3.5 v 60 165 270 mv 3 voltage gain n n = 1, 2, 3, 4 gampn v1 = v2 = v3 = v4 = 3.5 v 0.2 0.99 0.2 0.2 1.01 ? 3 input voltage, operating voltage operating voltage between v dd and v ss v dsop ? 6 ? 18 v 4 ctl1 input voltage for high v ctl1h ? v dd 0.8 ? ? v 6 ctl1 input voltage for low v ctl1l ? ? ? v dd 0.2 v 6 ctln input voltage for high n = 2, 3, 4 v ctlnh ? v out 0.9 ? v out v 3, 6 ctln input voltage for low n = 2, 3, 4 v ctlnl ? ? ? v out 0.1 v 3, 6
battery protection ic for 3-serial or 4-serial pack s-8243a/b series rev.1.2 _00 seiko instruments inc. 10 table 7 (2/2) parameter symbol remarks min. typ. max. unit test circuit input current current consumption at not monitoring v batout i ope v1 = v2 = v3 = v4 = 3.5 v, v mp = v dd ? 65 120 a 1 current consumption at power down i pdn v1 = v2 = v3 = v4 = 1.5 v, v mp = v ss ? ? 0.1 a 1 current for vcn at not monitoring v batout (n = 1, 2, 3) i vcnn v1 = v2 = v3 = v4 = 3.5 v ? 0.3 0 0.3 a 3 current for vc1 at monitoring of v batout i vc1 v1 = v2 = v3 = v4 = 3.5 v ? 3.2 10.4 a 3 current for vc2 at monitoring of v batout i vc2 v1 = v2 = v3 = v4 = 3.5 v ? 2.0 7.2 a 3 current for vc3 at monitoring of v batout i vc3 v1 = v2 = v3 = v4 = 3.5 v, v ctl1 = 0 v ? 1.0 4.0 a 3 current for ctl1 at low i ctl1l v1 = v2 = v3 = v4 = 3.5 v, v ctl1 = 0 v ? 0.4 ? 0.2 ? a 5 current for ctln at high n = 2, 3, 4 i ctlnh v ctln = v out ? 2.5 5 a 9 current for ctln at low n = 2, 3, 4 i ctlnl v ctln = 0 v ? 5 ? 2.5 ? a 9 output current leak current cop i coh v cop = 24 v ? ? 0.1 a 9 sink current cop i col v cop = v ss + 0.5 v 10 ? ? a 9 source current dop i doh v dop = v dd ? 0.5 v 10 ? ? a 9 sink current dop i dol v dop = v ss + 0.5 v 10 ? ? a 9 source current v batout i vbath v batout = v dd ? 0.5 v 100 ? ? a 9 sink current v batout i vbatl v batout = v ss + 0.5 v 100 ? ? a 9 applied to s-8243baeft and s-8243bafft parameter symbol conditions min. typ. max. unit test circuit delay time overcharge detection delay time t cu c ct = 0.1 f 0.5 1.0 1.5 s 5 overdischarge detection delay time t dl c dt = 0.1 f 50 100 150 ms 5 overcurrent detection delay time 1 t lov1 c dt = 0.1 f 5 10 15 ms 5 overcurrent detection delay time 2 t lov2 ? 1.5 2.5 4.0 ms 4 overcurrent detection delay time 3 t lov3 ? 100 300 600 s 4 applied to s-8243badft parameter symbol conditions min. typ. max. unit test circuit delay time overcharge detection delay time t cu c ct = 0.1 f 0.5 1.0 1.5 s 5 overdischarge detection delay time t dl c dt = 0.1 f 55.5 111 222 ms 5 overcurrent detection delay time 1 t lov1 c dt = 0.1 f 3.31 6.62 13.2 ms 5 overcurrent detection delay time 2 t lov2 ? 1.5 2.5 4.0 ms 4 overcurrent detection delay time 3 t lov3 ? 100 300 600 s 4 *1. temperature coefficient for detection and re lease voltage is applied to overcharge det ection voltage n, overcharge release volt age n overdischarge detection voltage n, and overdischarge release voltage n. *2. temperature coefficient for overcurrent detection volt age is applied to over current detection voltage 1 and 2.
battery protection ic for 3-serial or 4-serial pack rev.1.2 _00 s-8243a/b series seiko instruments inc. 11 ? test circuits in this chapter test methods are explained for the case of s-8243b series, which is designed for 4-serial cell pack. for the case of s-8243a series, which is des igned for 3-serial cell, voltage source v2 should be shorted, v3 should be read as v2, and v4 as v3. 1. current consumption (test circuit 1) current consumption at not monitoring v batout , i ope , is a current measured at the vss pin when v1 = v2 = v3 = v4 = 3.5 v and v mp = v dd . current consumption at power down, i pdn , is a current measured at the vss pin when v1 = v2 = v3 = v4 = 1.5 v and v mp = v ss . 2. voltage regulator (test circuit 2) output voltage of the regulator v out is a voltage measured at the vreg pin when v dd = v mp = 14 v and i out = 3 ma. line regulation of the voltage regulator ? v out1 is defined by the equation ? v out1 = v out2 ? v out1 where v out1 is the output voltage when v dd = v mp = 6 v and i out = 3 ma, and v out2 is the output voltage when v dd = v mp = 18 v and i out = 3 ma. load regulation of the regulator is defined by the equation ? v out2 = v out3 ? v out where v out3 is the output voltage when v dd = v mp = 14 v and i out = 5 a. 3. battery monitor amp and pin current for vc1 to vc3 (test circuit 3) voltage gain of the battery monitor amp for each ce ll is defined by the input offset voltage and the measurement result provided from the vbatout pin for the combination of the ctl3 pin and ctl4 pin expressed by the following tabl e at the condition where v1 = v2 = v3 = v4 = 3.5 v. pin current for vc1 to vc3, i vcn and i vcnn are at the same time measured. table 8 ctl3 pin status ctl4 pin status vbatout pin output vcn (n = 1, 2, 3) pin current v ctl3h min. v ctl4h min. v off1 i vc1 at vc1 pin v ctl3h min. open v bat1 ? v ctl3h min. v ctl4l max. v off2 i vc2 at vc2 pin open v ctl4h min. v bat2 ? open open v off3 i vc3 at vc3 pin open v ctl4l max. v bat3 ? v ctl3l max. v ctl4h min. v off4 i vcnn at vcn pin (n = 1, 2, 3) v ctl3l max. open v bat4 ? voltage gain of the battery monitor amp fo r each cell is calculated by the equation gampn = (v batn ? v offn ) / vn (n = 1 to 4) 4. overcharge detection voltages, overcharge detection hysteresis, overdischarge detection voltages, overdischarge detection hysteresis, and overcurrent detection voltages (test circuit 4) ?? overcharge detection voltages, hysteresis voltages, and overdischarge detection voltages ?? in the following v mp = v dd and the cdt pin is open. the cop pin and the dop pin should provide ?low?, which is a voltage equal to v dd 0.1 v or lower, in the condition that v1 = v2 = v3 = v4 = 3.5 v. the overcharge detection voltage v cu1 is defined by the voltage at which cop pin voltage becomes ?high?, which is a voltage equal to vdd 0.9 v or higher, when the voltage v1 is gradually increased from the starting condition v1 = 3.5 v. the overcharge release voltage v cl1 is defined by the voltage at which cop pin voltage becomes ?low? when the voltage v1 is gradually decreased. the hysteresis voltage of t he overcharge detection v hc1 is then defined by the difference between the overcharge detection voltage v cu1 and the overcharge release voltage v cl1 .
battery protection ic for 3-serial or 4-serial pack s-8243a/b series rev.1.2 _00 seiko instruments inc. 12 the overdischarge detection voltage v dl1 is defined by the voltage at which dop pin voltage becomes ?high? when the voltage v1 is gradua lly decreased from the starting condition v1 = 3.5 v. the overdischarge release voltage v du1 is defined by the voltage at which dop pin voltage becomes ?low? when the voltage v1 is gradually increased. the hysteresis of t he overdischarge detection voltage v hd1 is then defined by the difference bet ween the overdischarge release voltage v du1 and the overdischarge detection voltage v dl1 . other overcharge detection voltage v cun , hysteresis voltage of overcharge detection v hcn , overdischarge detection voltage v dln , and hysteresis of the ov erdischarge detection voltage v hdn ( for n = 2 to 4) are defined in the same manner as in the case for n = 1. ?? overcurrent detection voltages ?? starting condition is v1 = v2 = v3 = v4 = 3.5 v, v mp = v dd , and the cdt pin is open. the dop pin voltage thus provides ?low? the overcurrent detection voltage 1, v iov1 is defined by the voltage difference v dd ? v mp at which the dop pin voltage becomes ?high? when t he voltage of vmp pin is decreased. starting condition for measuring the over current detection voltage 2 and 3 is v1 = v2 = v3 = v4 = 3.5 v, v mp = v dd and the cdt pin voltage v cdt = v ss . the dop pin voltage thus provides ?low?. the overcurrent detection voltage 2, v iov2 is defined by the voltage difference v dd ? v mp at which the dop pin voltage becomes ?high? when t he voltage of vmp pin is decreased. the overcurrent detection delay time 2, t iov2 is a time needed for the dop pin to become ?high? from ?low? when the vm pin voltage is changed quickly to v iov2 min. ? 0.2 v from the starting condition v mp = v dd . the overcurrent detection voltage 3, v iov3 is defined by the voltage of the vm pin at which the dop pin voltage becomes ?high? when the voltage of vm p pin is decreased at the speed 10 v / ms. the overcurrent detection delay time 3, t iov3 is a time needed for the dop pin to become ?high? from ?low? when the vm pin voltage is changed quickly to v iov3 min. ? 0.2 v from the starting condition v mp = v dd . 5. ctl1 pin current, overcharge detection delay , overdischarge detection delay, and overcurrent detection delay 1 (test circuit 5) starting condition is v1 = v2 = v3 = v4 = 3.5 v and v mp = v dd . current that flows between the ctl1 pin and v ss is the ctl1 pin current i ctl1l . the overcharge detection delay time t cu is a time needed for the cop pin voltage to change from ?low? to ?high? just after the v1 voltage is rapi dly increased from 3.5 v to 4.5 v. the overdischarge detection delay time t dl is a time needed for the dop pin voltage to change from ?low? to ?high? just after the v1 voltage is rapidly decreased from 3.5 v to 1.5 v. the overcurrent detection delay time 1 is a time needed for the dop pin voltage to change from ?low? to ?high? just after the vmp pin voltage is decreased from v dd to v dd ? 0.35 v when v1 = 3.5 v. 6. input voltages for ctl1 and ctl2 (test circuit 6) starting condition is v1 = v2 = v3 = v4 = 3.5 v. pin voltages of the cop and the dop should be ?high? when v ctl1 = v ctl1h min. and ctl2 is open. pin voltages of the cop and the dop should be ?low? when v ctl1 = v ctl1l max. and ctl2 is open. pin voltage of the cop is ?high? and the pin voltage of the dop is ?low? when v ctl1 = v ctl1l max. and v ctl2 = v ctl2h min. pin voltage of the cop is ?low? and the pin voltage of the dop is ?high? when v ctl1 = v ctl1l max. and v ctl2 = v ctl2l max.
battery protection ic for 3-serial or 4-serial pack rev.1.2 _00 s-8243a/b series seiko instruments inc. 13 7. 0 v battery charge starting charger voltage and 0 v battery charge inhibition battery voltage (test circuit 7) one of the 0 v battery charge starting charger volt age and 0 v battery charge inhibition battery voltage is applied to each product according to t he 0v battery charging function. starting condition is v1 = v2 = v3 = v4 = 0 v for a product in which 0 v ba ttery charging is available. the cop pin voltage should be lower than v 0cha max. ? 1 v when the vmp pin voltage v mp = v 0cha max. starting condition is v1 = v2 = v3 = v4 = v 0inh for a product in which 0 v batte ry charging is inhibited. the cop pin voltage should be higher than v mp ? 1 v when the vmp pin voltage v mp = 24 v. 8. internal resistance (test circuit 8) the resistance between vdd and vmp is r vdm and is calculated by the equation r vdm = v dd / i vdm where i vdm is a vmp pin current after v mp is changed to v ss from the starting condition v1 = v2 = v3 = v4 = 3.5 v and v mp = v dd . the resistance between vss and vmp is r vsm and is calculated by the equation r vsm = v dd / i vsm where i vsm is a vmp pin current at the condition v1 = v2 = v3 = v4 = 1.8 v and v mp = v dd . 9. pin current for ctl2 to ctl4, cop, dop, vbatout (test circuit 9) starting condition is v1 = v2 = v3 = v4 = 3.5 v. pin current for ctl2 at ?high? is i ctl2h and is obtained by setting v ctl2 = v out . pin current for ctl2 at ?low? is i ctl2l and is obtained by setting v ctl2 = v ss . pin current for ctl3 and ctl4 can be obtained in the same manner as in the ctl2. pin current for cop at ?high? is i coh and is obtained by setting v1 = v2 = v3 = v4 = 6 v, v mp = v dd , and v cop = v dd . and pin current for cop at ?low? is i col and is obtained by setting v1 = v2 = v3 = v4 = 3.5 v, v mp = v dd , and v cop = 0.5 v. pin current for dop at ?low? is i dol and is obtained by setting v1 = v2 = v3 = v4 = 3.5 v, v mp = v dd , and v dop = 0.5 v. and pin current for cop at ?high? is i coh and is obtained by setting v1 = v2 = v3 = v4 = 3.5 v, v mp = v dd ? 1 v, and v dop = v dd ? 0.5 v. pin current for vbatout at ?high? is i vbath and is obtained by setting ctl3 and ctl4 are open and v batout = v off3 ? 0.5 v. and pin current for vbatout at ?low? is i vbatl and is obtained by setting v batout = v off3 + 0.5 v. c1 = 1 f v4 v3 v2 v1 8 vss 7 vc3 6 vc2 5 vc1 3 cop 2 dop 4 vmp 1 vdd vbatout 11 vreg 16 cdt 9 cct 10 ctl4 12 ctl2 14 ctl1 15 ctl3 13 a c1 = 1 f i out v 8 vss 7 vc3 6 vc2 5 vc1 3 cop 2 dop 4 vmp 1 vdd vbatout 11 vreg 16 cdt 9 cct 10 ctl4 12 ctl2 14 ctl1 15 ctl3 13 test circuit 1 test circuit 2
battery protection ic for 3-serial or 4-serial pack s-8243a/b series rev.1.2 _00 seiko instruments inc. 14 c1 = 1 f v4 v3 v2 v1 v a a a 8 vss 7 vc3 6 vc2 5 vc1 3 cop 2 dop 4 vmp 1 vdd vbatout 11 vreg 16 cdt 9 cct 10 ctl4 12 ctl2 14 ctl1 15 ctl3 13 r1 = 1 m ? v4 v3 v2 v1 v v c1 = 1 f 8 vss 7 vc3 6 vc2 5 vc1 3 cop 2 dop 4 vmp 1 vdd vbatout 11 vreg 16 cdt 9 cct 10 ctl4 12 ctl2 14 ctl1 15 ctl3 13 test circuit 3 test circuit 4 c2 = 0.1 f v4 v3 v2 v1 a c1 = 1 f c3 = 0.1 f 8 vss 7 vc3 6 vc2 5 vc1 3 cop 2 dop 4 vmp 1 vdd vbatout 11 vreg 16 cdt 9 cct 10 ctl4 12 ctl2 14 ctl1 15 ctl3 13 c1 = 1 f v4 v3 v2 v1 r1 = 1 m ? v v 8 vss 7 vc3 6 vc2 5 vc1 3 cop 2 dop 4 vmp 1 vdd vbatout 11 vreg 16 cdt 9 cct 10 ctl4 12 ctl2 14 ctl1 15 ctl3 13 test circuit 5 test circuit 6 v4 v3 v2 v1 r1 = 1 m ? v c1 = 1 f 8 vss 7 vc3 6 vc2 5 vc1 3 cop 2 dop 4 vmp 1 vdd vbatout 11 vreg 16 cdt 9 cct 10 ctl4 12 ctl2 14 ctl1 15 ctl3 13 v4 v3 v2 v1 a c1 = 1 f 8 vss 7 vc3 6 vc2 5 vc1 3 cop 2 dop 4 vmp 1 vdd vbatout 11 vreg 16 cdt 9 cct 10 ctl4 12 ctl2 14 ctl1 15 ctl3 13 test circuit 7 test circuit 8 v4 v3 v2 v1 a a a a a a c1 = 1 f 8 vss 7 vc3 6 vc2 5 vc1 3 cop 2 dop 4 vmp 1 vdd vbatout 11 vreg 16 cdt 9 cct 10 ctl4 12 ctl2 14 ctl1 15 ctl3 13 test circuit 9 figure 4
battery protection ic for 3-serial or 4-serial pack rev.1.2 _00 s-8243a/b series seiko instruments inc. 15 ? operation descriptions 1. battery protection circuit battery protection protects batteri es from overcharge and overdischar ge, and also protects external fets from overcurrent. 1-1 normal condition when all of the battery voltages are in the range from v dln to v cun and the discharge current is lower than a specified value (the vmp pin voltage is lower than v iov1 ), the charging and discharging fets are turned on. 1-2 overcharge condition when any one of the battery voltages becomes higher than v cun and the state continues for t cu or longer, the cop pin becomes high impedance and is pulled up to eb + pin voltage by an external resistor, and the charging fet is turned off to st op charging. the overcharge condition is released when one of the following two conditions holds. a) all battery voltages become lower than v cun + v hcn . b) v dd ? v mp > v iov1 (a load is connected, and discharging starts.) 1-3 overdischarge condition when any one of the battery voltages becomes lower than v dln and the state continues for t dl or longer, the dop pin voltage becomes v dd level, and the discharging fet is turned off to stop discharging. after discharging is stopped due to overdischarge condition, the s-8243 enters power down condition. 1-4 power down condition after stopping discharging due to overdischarge condi tion, the s-8243 enters power down condition. in this condition, almost all circuits of the s-8243 are stopped to save current consumption. the current consumption becomes lower than i pdn . in the power down condition, the vmp pin is pulled down to v ss level by the internal r vsm resistor. in power down conditi on, output pin voltages are fixed at the following levels. a) cop v ss (charging fet is turned on) b) dop v dd (discharging fet is turned off) c) vreg v ss (voltage regulator circuit is off) d) vbatout v ss (battery voltage monitor amp circuit is off) the power down condition is releas ed when the following condition holds. a) v mp > v iov3 (a charger is connec ted, and charging starts. ) the overdischarging status is rel eased when the following condition holds. a) all of the battery voltages are v dln or higher, and the vdd pin voltage is v dd /2 or higher. (a charger is connected.) 1-5 overcurrent condition the s-8243 has three overcurrent detection levels (v iov1 , v iov2 and v iov3 ) and three overcurrent detection delay times (t iov1 , t iov2 and t iov3 ) corresponding to each overcurrent detection levels. when the discharging current becomes higher t han a specified value (the voltage between v dd and v mp is greater than v iov1 ) and the state continues for t iov1 or longer, the s-8243 enters the overcurrent condition in which the dop pin voltage becomes v dd level to turn off the discharging fet to stop discharging, the cop pin becomes high impedance and is pulled up to eb + pin voltage by an external resistor to turn off the charging fet to stop charging, and the vmp pin is pulled up to v dd voltage by the internal resistor r vdm . operation of two other overcurrent detection levels (v iov2 and v iov3 ) and overcurrent detection delay times (t iov2 and t iov3 ) is the same as that for v iov1 and t iov1 . the overcurrent condition is released when the following condition holds. a) v mp > {v iov3 / (1 ? v iov3 ) 3 / 5 ? 2 / 5} r vdm ( a load is released, and the impedance between the eb ? and eb + pin becomes higher. )
battery protection ic for 3-serial or 4-serial pack s-8243a/b series rev.1.2 _00 seiko instruments inc. 16 1-6 0 v battery charging function regarding the charging of a self-discharged battery (0 v battery) the s-8243 has two functions from which one should be selected. a) 0 v battery charging is allowed (0 v battery charging is available) when a charger voltage is higher than v 0cha , 0 v battery can be charged. b) 0 v battery charging is forbidden (0 v battery charging is impossible) when one of the battery voltages is lower than v 0inh , 0 v battery can not be charged. caution when the vdd pin voltage is lower than minimum of v dsop , the operation of s-8243 series is not guaranteed. 1-7 delay time setting overcharge detection delay times (t cu1 to t cu4 ) are determined by the exter nal capacitor at the cct pin. overdischarge detection delay times (t dl1 to t dl4 ) and overcurrent detection delay time 1 (t iov1 ) are determined by the external capacitor at cdt pin. overcurrent detection delay time 2,3 (t iov2 , t iov3 ) are fixed internally. s-8243aac, aad, ae, baf min. typ. max. t cu [s] = delay factor ( 5 10 15 ) c ct [ f] t dl [ms] = delay factor ( 500 1000 1500 ) c dt [ f] t iov1 [ms] = delay factor ( 50 100 150 ) c dt [ f] s-8243bad min. typ. max. t cu [s] = delay factor ( 5 10 15 ) c ct [ f] t dl [ms] = delay factor ( 555 1110 2220 ) c dt [ f] t iov1 [ms] = delay factor ( 33.1 66.2 132 ) c dt [ f] 2. voltage regulator circuit built-in voltage regulator can be used to drive a micr o computer, etc. the voltage regulator supplies voltage of 3.3 v (3 ma maximum) and an external capacitor is needed. caution in the power down condition the voltage regulator output is pulled down to the v ss level by an internal resistor. 3. battery monitor amp circuit battery monitor amp sends information of the batteri es to a microcomputer. the battery monitor amp output is controlled and selected by ctl3 and ct l4 pins to give the following two voltages. a) v batn = gampn v batteryn + v offn where gampn is the n-th voltage gain of the amp, v batteryn is the n-th battery voltage, and v offn is the n-th offset voltage of the amp. b) n-th offset voltage v offn each battery voltage v batteryn (n = 1 to 4) is thus calculated by following equation. v batteryn = {(v batn ? v offn } / gampn (n = 1,2,3,4) after the state of ctl3 and ct l4 are changed, a time between 25 s and 250 s is needed for the battery monitor amp to become stable. caution in the power down condition the battery monitor amp output is the v ss level.
battery protection ic for 3-serial or 4-serial pack rev.1.2 _00 s-8243a/b series seiko instruments inc. 17 4. ctl pins the s-8243 has four control pins. the ctl1 and ctl2 pins are used to control the cop and dop pin output voltages. ctl1 takes precedence over ctl2. ctl2 takes precedence over the battery protection circuit. the ctl3 and ctl4 pins are used to control the vbatout pin output voltage. table 9 ctl1 and ctl2 mode input output ctl1 pin ctl2 pin external discharging fet external charging fet high high off off high open off off high low off off open high off off open open off off open low off off low high normal *1 off *2 low open normal *1 normal *1 low low off normal *1 *1. states are controlled by voltage detection circuit. *2. off state is brought after the overcharge detection delay time t cu . table 10 ctl3 and ctl4 mode input output ctl3 pin ctl4 pin v batout (a series) v batout (b series) high high v1 offset v1 offset high open v1 0.2 + v1 offset v1 0.2 + v1 offset high low don?t use. v2 offset open high don?t use. v2 0.2 + v2 offset open *1 open *1 v2 offset v3 offset open low v2 0.2 + v2 offset v3 0.2 + v3 offset low high v3 offset v4 offset low open v3 0.2 + v3 offset v4 0.2 + v4 offset low low don?t use. don?t use. *1. ctl3 and ctl4 pins should be open when a microcomputer is not used. caution please note unexpected behavior might occur when electrical potential difference between the ctl pin (?l? level) and vss is generated through the external filter (r vss and c vss ) as a result of input voltage fluctuations.
battery protection ic for 3-serial or 4-serial pack s-8243a/b series rev.1.2 _00 seiko instruments inc. 18 ? operation timing charts 1. overcharge detection, over discharge detection (n= 1~4) v cun v dun v dln v cln battery voltage hi-z v dd v ss cop pin voltage v iov1 v ss vmp pin voltage v dd v dd dop pin voltage v ss charger connected load connected mode *2 overcharge detection delay time (t cu ) overdischarge detection delay time (t dl ) <1> <2> <1> <3> <1> v bat v ss vbatout pin volta g e *1 v out v out v ss vreg pin votage v dd hi-z *1. state depends on ctl3 and ctl4 input levels. refer to figure 8 . *2. <1>: normal mode, <2>: overc harge mode, <3>: overdischarge mode remark the charger is assumed to charge with a constant current. v eb + indicates the open voltage of the charger. figure 5
battery protection ic for 3-serial or 4-serial pack rev.1.2 _00 s-8243a/b series seiko instruments inc. 19 2. overcurrent detection v cu v du v dl v cl battery voltage v hc v hd v dd dop pin voltage v ss hi-z v ss cop pin voltage hi-z hi-z v dd v ss vmp pin voltage v iov3 v iov2 v iov1 load connected v return * 1 v out v ss vbatout pin voltage *2 v dd v ss vreg pin voltage v out v bat <1> <2> <1> <1> <2> <1> <2> mode * 3 charger connected overcurrent detection delay time 1 ( t iov1 ) overcurrent detection delay time 3 ( t iov3 ) overcurrent detection delay time 2 ( t iov2 ) *1. v return = v dd / 6 (typ.) *2. state depends on ctl3 and ctl4 input levels. refer to figure 8 . *3. <1>: normal mode, <2>: overcurrent mode remark the charger is assumed to charge with a constant current. figure 6
battery protection ic for 3-serial or 4-serial pack s-8243a/b series rev.1.2 _00 seiko instruments inc. 20 3. ctl1, ctl2 pin voltage v dd cop pin volta g e v ss v out v ss vbatout pin voltage *2 v dd v ss vreg pin volta g e v out v bat v dd dop pin volta g e v ss v dd v dd v dd v dd v dd v dd normal *1 normal *1 v dd hi-z hi-z hi-z hi-z hi-z hi-z hi-z normal * 1 normal * 1 v dd v ss ctl1 pin volta g e v out open v dd v ss v out open ctl2 pin volta g e *1. state depends on each battery voltage and the vmp pin voltage. *2. state depends on ctl3 and ctl4 input levels. refer to figure 8 . figure 7
battery protection ic for 3-serial or 4-serial pack rev.1.2 _00 s-8243a/b series seiko instruments inc. 21 4. ctl3, tl4 pin voltage v off cop pin voltage *1 v ss v out v ss v dd v ss vreg pin voltage v out v bat v dd dop pin voltage *1 v ss (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) v dd v ss ctl3 pin voltage v out open v dd v ss v out open ctl4 pin voltage v out v ss s-8243a (3-serial cell) vbatout pin voltage v bat s-8243b (4-serial cell) vbatout pin voltage (1) v off v1 offset + v1 offset v1 0.2 v2 offset v2 0.2 + v2 offset + v3 offset v3 0.2 v3 offset v1 offset + v1 offset v1 0.2 v2 offset v3 0.2 + v2 offset v3 offset v4 0.2 v2 0.2 don?t use don?t use don?t use don?t use + v3 offset v4 offset + v4 offset (1) *1. state depends on ctl1 and ctl2 and each battery voltage and the vmp pin voltage. refer to figure 5 to 7 . figure 8
battery protection ic for 3-serial or 4-serial pack s-8243a/b series rev.1.2 _00 seiko instruments inc. 22 ? battery protection ic connection example 1. s-8243a series r vss ctl1 r vmp r dop eb- eb+ 8 vss 7 vc3 6 vc2 5 vc1 3 cop 2 dop 4 vmp 1 vdd vbatout 11 ctl4 12 vreg 16 cct 10 ctl2 14 ctl1 15 ctl3 13 cdt 9 c vc3 c vc2 s-8243a c vss r vc3 r vc2 microcomputer c cdt c cct c vreg r vbat r ctl4 r ctl3 r ctl2 r ctl1 charging fet discharging fet r cop figure 10 table 11 constants for external components no. part typ. range unit 1 r vc2 1 0.51 to 1 *1 k ? 2 r vc3 1 0.51 to 1 *1 k ? 3 r vss 10 2.2 to 10 *1 ? 4 r dop 5.1 2 to 10 k ? 5 r cop 1 0.1 to 1 m ? 6 r vmp 5.1 1 to 10 k ? 7 r ctl1 0 0 to 100 k ? 8 r ctl2 0 0 to 10 k ? 9 r ctl3 0 0 to 10 k ? 10 r ctl4 0 0 to 10 k ? 11 r vbat 0 0 to 100 k ? 12 c vc2 0.047 0.047 to 0.22 *1 f 13 c vc3 0.047 0.047 to 0.22 *1 f 14 c vss 4.7 2.2 to 10 *1 f 15 c cct 0.1 more than 0.01 f 16 c cdt 0.1 more than 0.02 f 17 c vreg 4.7 0.68 to 10 f *1. please set up a filter constant to be r vss c vss 22 f ? ? and to be r vc2 c vc2 = r vc3 c vc3 = r vss c vss . caution no resistance should be inserted in the power supply pin vdd. the above connection example does not guarantee proper operations. evaluation in actual application is needed to determine proper constants.
battery protection ic for 3-serial or 4-serial pack rev.1.2 _00 s-8243a/b series seiko instruments inc. 23 2. s-8243b series r vss ctl1 charging fet discharging fet r vmp r dop eb- eb+ 8 vss 7 vc3 6 vc2 5 vc1 3 cop 2 dop 4 vmp 1 vdd vbatout 11 ctl4 12 vreg 16 cct 10 ctl2 14 ctl1 15 ctl3 13 cdt 9 c vc3 c vc2 c vc1 s-8243b c vss r vc3 r vc2 microcomputer c cdt c cct c vreg r vbat r ctl4 r ctl3 r ctl2 r ctl1 r vc1 r cop figure 11 table 12 constants for external components no. part typ. range unit 1 r vc1 1 0.51 to 1 *1 k ? 2 r vc2 1 0.51 to 1 *1 k ? 3 r vc3 1 0.51 to 1 *1 k ? 4 r vss 10 2.2 to 10 *1 ? 5 r dop 5.1 2 to 10 k ? 6 r cop 1 0.1 to 1 m ? 7 r vmp 5.1 1 to 10 k ? 8 r ctl1 0 0 to 100 k ? 9 r ctl2 0 0 to 10 k ? 10 r ctl3 0 0 to 10 k ? 11 r ctl4 0 0 to 10 k ? 12 r vbat 0 0 to 100 k ? 13 c vc1 0.047 0.047 to 0.22 *1 f 14 c vc2 0.047 0.047 to 0.22 *1 f 15 c vc3 0.047 0.047 to 0.22 *1 f 16 c vss 4.7 2.2 to 10 *1 f 17 c cct 0.1 more than 0.01 f 18 c cdt 0.1 more than 0.02 f 19 c vreg 4.7 0.68 to 10 f *1. please set up a filter constant to be r vss c vss 22 f ? ? and to be r vc1 c vc1 = r vc2 c vc2 = r vc3 c vc3 = r vss c vss . caution no resistance should be inserted in the power supply pin vdd. the above connection example does not guarantee proper operations. evaluation in actual application is needed to determine proper constants.
battery protection ic for 3-serial or 4-serial pack s-8243a/b series rev.1.2 _00 seiko instruments inc. 24 ? precautions ? pay attention to the operating conditions for input/output voltage and load current so that the power loss in the ic does not exceed the package power dissipation. ? do not apply an electrostatic discharge to this ic t hat exceeds the performance ratings of the built-in electrostatic protection circuit. ? seiko instruments inc. shall not be responsible for any patent infringement by products including the s-8243 series, the method of using the s-8243 series in such pr oducts, the product specificat ions or the country of destination thereof.
battery protection ic for 3-serial or 4-serial pack rev.1.2 _00 s-8243a/b series seiko instruments inc. 25 ? the example of application circuit 1. s-8243a series ctl1 eb ? eb + 8 vss 7 vc3 6 vc2 5 vc1 3 cop 2 dop 4 vmp 1 vdd vbatout 11 ctl4 12 vreg 16 cct 10 ctl2 14 ctl1 15 ctl3 13 cdt 9 s-8243a vreg smbus vreg vreg led1 led2 led3 led4 led5 disp vout escl escd smbc smbd hdq sr2 sr1 src vss rb1 vt thon vcell1 ctl4 ctl3 ctl2 reg vcc bq2063 s-24c gnd wp a2 a1 a0 sda scl vcc figure 12 2. s-8243b series ctl1 eb - eb+ 8 vss 7 vc3 6 vc2 5 vc1 3 cop 2 dop 4 vmp 1 vdd vbatout 11 ctl4 12 vreg 16 cct 10 ctl2 14 ctl1 15 ctl3 13 cdt 9 s-8243b vreg smbus vreg vreg led1 led2 led3 led4 led5 disp vout escl escd smbc smbd hdq sr2 sr1 src vss rb1 vt thon vcell1 ctl4 ctl3 ctl2 reg vcc bq2063 s-24c gnd wp a2 a1 a0 sda scl vcc figure 13 caution the application circuits do not guarantee proper operations. evaluation in actual application is needed to determine proper constants.
battery protection ic for 3-serial or 4-serial pack s-8243a/b series rev.1.2 _00 seiko instruments inc. 26 ? typical characteristics (typical data) 1. current consumption 0 20 40 60 80 100 120 0 4 8 12 16 20 24 v dd (v) i ope ( a) s-8243baf i ope - v dd 0 20 40 60 80 100 120 -40 -20 0 20 40 60 80 ta (c) i ope ( a) s-8243baf i ope - temp 0.00 0.02 0.04 0.06 0.08 0.10 0 4 8 12 16 20 24 v dd (v) i pdn ( a) s-8243baf i pdn - v dd 0.00 0.02 0.04 0.06 0.08 0.10 -40 -20 0 20 40 60 80 ta (c) i pdn ( a) s-8243baf i pdn - temp 2. overcharge detection/release volt age, overdischarge detection/releas e voltage, overcurrent detection voltages, and delay times 4.225 4.230 4.235 4.240 4.245 4.250 4.255 4.260 4.265 4.270 4.275 -40 -20 0 20 40 60 80 ta (c) v cu (v) s-8243baf v cu - temp 3.95 3.97 3.99 4.01 4.03 4.05 -40 -20 0 20 40 60 80 ta (c) v cl (v) s-8243baf v cl - temp 2.300 2.325 2.350 2.375 2.400 2.425 2.450 2.475 2.500 -40 -20 0 20 40 60 80 ta (c) v du (v) s-8243baf v du - temp 2.32 2.34 2.36 2.38 2.40 2.42 2.44 2.46 2.48 -40 -20 0 20 40 60 80 ta (c) v dl (v) s-8243baf v dl - temp 0.175 0.180 0.185 0.190 0.195 0.200 0.205 0.210 0.215 0.220 0.225 10 12 14 16 v dd (v) v iov1 (v) s-8243baf v iov1 - v dd 0.175 0.180 0.185 0.190 0.195 0.200 0.205 0.210 0.215 0.220 0.225 -40 -20 0 20 40 60 80 ta (c) v iov1 (v) s-8243baf v iov1 - temp
battery protection ic for 3-serial or 4-serial pack rev.1.2 _00 s-8243a/b series seiko instruments inc. 27 -0.60 -0.55 -0.50 -0.45 -0.40 10 12 14 16 v dd (v) v iov2 (v) s-8243baf v iov2 - v dd v dd reference -0.60 -0.55 -0.50 -0.45 -0.40 -40-20 0 20406080 ta (c) v iov2 (v) s-8243baf v iov2 - temp v dd reference 0.425 0.450 0.475 0.500 0.525 0.550 0.575 10 12 14 16 v dd (v) v iov3 /v dd ( ? ) s-8243baf v iov3 - v dd 0.425 0.450 0.475 0.500 0.525 0.550 0.575 -40 -20 0 20 40 60 80 ta (c) v iov3 /v dd ( ? ) s-8243baf v iov3 - temp 0 5 10 15 0 0.2 0.4 0.6 0.8 1 c ct ( f) t cu (s) s-8243baf t cu - c ct 0.0 0.5 1.0 1.5 2.0 2.5 -40-20 0 20406080 ta (c) t cu (s) s-8243baf t cu - temp c ct =0.1 f 0 500 1000 1500 0 0.2 0.4 0.6 0.8 1 c dt ( f) t dl (ms) s-8243baf t dl - c dt 0 50 100 150 200 250 -40-20 0 20406080 ta (c) t dl (v) s-8243baf t dl - temp c dt =0.1 f 0 50 100 150 0 0.2 0.4 0.6 0.8 1 c dt ( f) t iov1 (ms) s-8243baf t iov1 - c dt 0 5 10 15 20 25 -40 -20 0 20 40 60 80 ta (c) t iov1 (ms) s-8243baf t iov1 - temp c dt =0.1 f 1.5 2.0 2.5 3.0 3.5 4.0 -40 -20 0 20 40 60 80 ta (c) t iov2 (ms) s-8243baf t iov2 -temp 100 200 300 400 500 600 -40 -20 0 20 40 60 80 ta (c) t iov3 ( s) s-8243baf t iov3 -temp
battery protection ic for 3-serial or 4-serial pack s-8243a/b series rev.1.2 _00 seiko instruments inc. 28 3. cop/dop pin current 0.00 0.02 0.04 0.06 0.08 0.10 0 4 8 12 16 20 24 v cop (v) i coh ( a ) s-8243baf i coh - v cop 0 5 10 15 20 25 30 35 40 0 3.5 7 10.5 14 v cop (v) i col (m a ) s-8243baf i col - v cop -5 -4 -3 -2 -1 0 0 1.8 3.6 5.4 7.2 v dop (v) i doh (m a ) s-8243baf i doh - v dop 0 5 10 15 20 25 30 35 40 0 3.5 7 10.5 14 v dop (v) i dol (m a ) s-8243baf i dol - v dop 4. voltage regulator 3.0 3.1 3.2 3.3 3.4 3.5 3.6 -40 -20 0 20 40 60 80 ta (c) v out (v) s-8243baf v out - temp 2.3 2.8 3.3 3.8 0 4 8 12 16 20 24 v dd (v) v out (v) s-8243baf v out - v dd v dd =0 24v, ta=25c i out = 5 a 100 a 3ma 10ma 0.0 1.0 2.0 3.0 4.0 0 20 40 60 80 100 i out (ma) v out (v) s-8243baf v out - i out v1=v2=v3=v4=v bat v dd =6v 14v 18v 10v 0.0 1.0 2.0 3.0 4.0 0 20406080100 i out (ma) v out (v) s-8243baf v out - i out 85c ta=-40c 25c
battery protection ic for 3-serial or 4-serial pack rev.1.2 _00 s-8243a/b series seiko instruments inc. 29 5. battery monitor amp 150 155 160 165 170 175 180 12345 v bat (v) v off (mv) s-8243baf v off - v bat v1=v2=v3=v4=v bat v off1 v off2 v off3 v off4 150 155 160 165 170 175 180 -40-200 20406080 ta (c) v off (mv) s-8243baf v off - temp v off1 v off2 v off3 v off4 0.198 0.199 0.200 0.201 0.202 12345 v bat (v) gamp ( ? ) s-8243baf gamp - v bat v1=v2=v3=v4=v bat gamp4 gamp3 gamp2 gamp1 0.198 0.199 0.200 0.201 0.202 -40 -20 0 20 40 60 80 ta (c) gamp ( ? ) s-8243baf gamp - temp gamp1 gamp2 gamp3 gamp4

!!"!#! !!"!#! $" !!"%&#
'
( ) ! ( '

)' !
* +
, !!!#! !!!#! $" !!- -. //
'
' ' )
!
(*
(
!!0!#! !!0!#! $" !! 01 1-2//-324-1.- 5 6
7
the information described herein is subject to change without notice. seiko instruments inc. is not responsible for any problems caused by circuits or diagrams described herein whose related industrial properties, patents, or other rights belong to third parties. the application circuit examples explain typical applications of the products, and do not guarantee the success of any specific mass-production design. when the products described herein are regulated products subject to the wassenaar arrangement or other agreements, they may not be exported without authorization from the appropriate governmental authority. use of the information described herein for other purposes and/or reproduction or copying without the express permission of seiko instruments inc. is strictly prohibited. the products described herein cannot be used as part of any device or equipment affecting the human body, such as exercise equipment, medical equipment, security systems, gas equipment, or any apparatus installed in airplanes and other vehicles, without prior written permission of seiko instruments inc. although seiko instruments inc. exerts the greatest possible effort to ensure high quality and reliability, the failure or malfunction of semiconductor products may occur. the user of these products should therefore give thorough consideration to safety design, including redundancy, fire-prevention measures, and malfunction prevention, to prevent any accidents, fires, or community damage that may ensue.

▲Up To Search▲

Price & Availability of S-8243AADFT

	To Download S-8243AADFT Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .