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s-8243a/b series www.sii-ic.com battery protection ic for 3-serial or 4-serial cell pack ? seiko instruments inc., 2002-2010 rev.3.0 _00 seiko instruments inc. 1 the s-8243a/b series is a protection ic for lithium-ion rechar geable battery. the s-8243a series protects 3-series, the s-8243b series protects 4-series cell pack from t he overcharge, overdisc harge, overcurrent voltages. this ic has a high-accuracy batter y protection circuit and a battery monitor amplifier, and also a voltage regulator which operates the microcomputer or gas gauge ic. combining this ic and a microcomputer or a gas gauge ic allo ws to display the amount of charge remained in a battery. ? 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 0.15 v to 0.70 v or 0 v (50 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, overdischarge det ection and overcurrent detection 1 can be set by external capacitors. (delay times for overcurrent detection 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) lead-free, sn 100%, halogen-free *1 *1. refer to ? ? product name structure ? for details. ? applications ? lithium-ion rechargeable battery packs ? lithium polymer rechargeable battery packs ? package ? 16-pin tssop
battery protection ic for 3-serial or 4-serial cell pack s-8243a/b series rev.3.0 _00 seiko instruments inc. 2 ? block diagrams 1. 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 cell pack rev.3.0 _00 s-8243a/b series seiko instruments inc. 3 2. 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 cell pack s-8243a/b series rev.3.0 _00 seiko instruments inc. 4 ? product name structure 1. product name s-8243 x xx ft - tb ? x environmental code u : lead-free (sn 100%), halogen-free g : lead-free (for details, please contact our sales office) ic direction in tape specifications *1 package name (abbreviation) ft: 16-pin tssop serial code *2 sequentially set from aa to zz product series name a : 3-cell b : 4-cell *1. refer to the tape specifications at the end of this book. *2. refer to the ? 3. product name list ?. 2. package drawing code package name package tape reel environmental code = g ft016-a-p- sd ft016-a-c-sd ft016-a-r-sd 16-pin tssop environmental code = u ft016-a-p- sd ft016-a-c-sd ft016-a-r-s1 3. product name list table 1 s-8243a series (for 3-serial cell) product name / item 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-tb-x 4.350 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-tb-x 4.350 0.025 v ? 0.35 0.05 v 2.40 0.08 v 0 v 0.20 0.025 v available table 2 s-8243b series (for 4-serial cell) product name / item 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-tb-x 4.350 0.025 v ? 0.25 0.05 v 2.40 0.08 v 0 v 0.25 0.025 v available s-8243baeft-tb-x 4.350 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-tb-x 4.250 0.025 v ? 0.25 0.05 v 2.40 0.08 v 0 v 0.20 0.025 v available s-8243bahft-tb-x 4.315 0.025 v ? 0.20 0.05 v 2.00 0.08 v 0.15 0.10 v 0.20 0.025 v available remark 1. change in the detection voltage is available in products other than listed above. contact our sales office. 2. x: g or u 3. please select products of environmental code = u for sn 100%, halogen-free products.
battery protection ic for 3-serial or 4-serial cell pack rev.3.0 _00 s-8243a/b series seiko instruments inc. 5 ? 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 3 pin description (s-8243a series) pin no. symbol description 1 vdd input pin for positive power supply, connection pin for battery 1?s positive voltage 2 dop connection pin for discharge control fet gate (cmos output) 3 cop connection pin for charge cont rol fet gate (nch open drain output) 4 vmp pin for voltage detection between vdd-vm p pin (pin for overcurrent detection) 5 vc1 no connection 6 vc2 connection pin for battery 1?s negative vo ltage, for battery 2?s positive voltage 7 vc3 connection pin for battery 2?s negative vo ltage, for battery 3?s positive voltage 8 vss input pin for negative power supply, connec tion pin for battery 3?s negative voltage 9 cdt connection pin to capacitor for overdischarge det ection delay, for overcurrent detection delay 1 10 cct connection pin to capacitor for overcharge detection delay 11 vbatout output pin for battery voltage and offset voltage 12 ctl4 pin for selecting output from vbatout pin 13 ctl3 pin for selecting output from vbatout pin 14 ctl2 control pin for charge / discharge fet 15 ctl1 control pin for charge / discharge fet 16 vreg output pin for voltage regulator (3.3 v) table 4 pin description (s-8243b series) pin no. symbol description 1 vdd input pin for positive power supply, connection pin for battery 1?s positive voltage 2 dop connection pin for discharge c ontrol fet gate (cmos output) 3 cop connection pin for charge control fet gate (nch open drain output) 4 vmp pin for voltage detection between vdd-vmp pin (pin for overcurrent detection) 5 vc1 connection pin for battery 1?s negative vo ltage, for battery 2?s positive voltage 6 vc2 connection pin for battery 2?s negative voltage, for battery 3?s positive voltage 7 vc3 connection pin for battery 3?s negative voltage, for battery 4?s positive voltage 8 vss input pin for negative power supply, connection pin for battery 4?s negative voltage 9 cdt connection pin to capacitor for overdischarge detection delay, for overcurrent detection delay 1 10 cct connection pin to capacitor fo r overcharge detection delay 11 vbatout output pin for battery voltage and offset voltage 12 ctl4 pin for selecting output from vbatout pin 13 ctl3 pin for selecting output from vbatout pin 14 ctl2 control pin for charge / discharge fet 15 ctl1 control pin for charge / discharge fet 16 vreg output pin for voltage regulator (3.3 v)
battery protection ic for 3-serial or 4-serial cell pack s-8243a/b series rev.3.0 _00 seiko instruments inc. 6 ? absolute maximum ratings table 5 (ta = 25 c unless otherwise specified) item symbol applied pins absolute maximum ratings 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 ? 300 (when not mounted on board) mw power dissipation p d ? 1100 *1 mw operation ambient temperature t opr ? ? 40 to + 85 c storage temperature t stg ? ? 40 to + 125 c *1. when mounted on board [mounted board] (1) board size : 114.3 mm 76.2 mm t1.6 mm (2) board name : jedec standard51-7 caution the absolute maximum ratings are rated valu es exceeding which the product could suffer physical damage. these values must therefor e not be exceeded under any conditions. 0 50 100 150 800 400 0 power dissipation (p d ) [mw] ambient temperature (ta) [ c] 1000 600 200 1200 figure 4 power dissipation of package (when mounted on board)
battery protection ic for 3-serial or 4-serial cell pack rev.3.0 _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) item 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 0.15 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 vm voltage based on v dd v iov1 ? 0.025 v iov1 v iov1 + 0.025 v 4 overcurrent detection voltage 2 v iov2 vm voltage based on v dd 0.40 0.50 0.60 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 *3 ? 1.0 0 1.0 mv/ c 4 temperature coefficient for overcurrent detection voltage *2 t coe2 ta = ? 5 c to + 55 c *3 ? 0.5 0 0.5 mv/ c 4 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 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 cell pack s-8243a/b series rev.3.0 _00 seiko instruments inc. 8 table 6 (2 / 2) item 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 item 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 release voltage is app lied to overcharge detection voltage n, overcharge release volt age n, overdischarge detection voltage n, and overdischarge release voltage n. *2. temperature coefficient for overcurrent detection voltage is applied to over current detection voltage 1 and 2. *3. since products are not screened at high and low temperature, t he specification for this temperature range is guaranteed by des ign, not tested in production.
battery protection ic for 3-serial or 4-serial cell pack rev.3.0 _00 s-8243a/b series seiko instruments inc. 9 2. s-8243b series table 7 (1 / 2) (ta = 25 c unless otherwise specified) item 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 0.15 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 vm voltage based on v dd v iov1 ? 0.025 v iov1 v iov1 + 0.025 v 4 overcurrent detection voltage 2 v iov2 vm voltage based on v dd 0.40 0.50 0.60 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 *3 ? 1.0 0 1.0 mv/ c 4 temperature coefficient for overcurrent detection voltage *2 t coe2 ta = ? 5 c to + 55 c *3 ? 0.5 0 0.5 mv/ c 4 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 cell pack s-8243a/b series rev.3.0 _00 seiko instruments inc. 10 table 7 (2 / 2) item 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 = 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, s-8243bafft, s-8243bahft item 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 item 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 release voltage is app lied to overcharge detection voltage n, overcharge release vol tage n, overdischarge detection voltage n, and overdischarge release voltage n. *2. temperature coefficient for overcurrent detection voltage is applied to over current detection voltage 1 and 2. *3. since products are not screened at high and low temperature, t he specification for this temperature range is guaranteed by des ign, not tested in production.
battery protection ic for 3-serial or 4-serial cell pack rev.3.0 _00 s-8243a/b series seiko instruments inc. 11 ? test circuits in this chapter test methods are explai ned for the case of s-8243b series, which is designed for 4-serial cell pack. for the case of s-8243a series, which is designed for 3-serial cell, voltage source v2 should be shor ted, 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 consumpti on 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 t he 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 t he regulator is def ined 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 cell is defined by the input o ffset voltage and the m easurement result provided from the vbatout pin for the co mbination of the ctl3 pin and ctl4 pin expressed by the following table 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)
battery protection ic for 3-serial or 4-serial cell pack s-8243a/b series rev.3.0 _00 seiko instruments inc. 12 4. overcharge detection voltages, overcharge detection hysteresis, overdischarge detection voltages, overdischarge detection hysteresis, and overcurrent detection voltages (test circuit 4) 4. 1 overcharge detection voltages, hysteresi s 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 co p pin voltage becomes ?high?, which is a voltage equal to vdd 0.9 v or higher, when the volt age v1 is gradually increased fr om the starting condition v1 = 3.5 v. the overc harge release voltage v cl1 is defined by the voltage at wh ich cop pin voltage becomes ?low? when the voltage v1 is gradually dec reased. the hysteresis volt age of the overc harge detection v hc1 is then defined by the difference between the overcharge detection voltage v cu1 and the overcharge release voltage v cl1 . the overdischarge detection voltage v dl1 is defined by the voltage at which dop pin voltage becomes ?high? when the voltage v1 is gradually decreased fr om 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 the ov erdischarge detection voltage v hd1 is then defined by t he difference between the overdischarge release voltage v du1 and the overdischar ge 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. 4. 2 overcurrent detection voltages starting condition is v1 = v2 = v3 = v4 = 3.5 v, vmp = vdd, and the cdt pin is open. the dop pin voltage thus provides ?low? the overcurrent detection vo ltage 1, viov1 is defined by the voltage difference vdd ? vmp at which the dop pin voltage becomes ?high? when the vo ltage of vmp pin is decreased. starting condition for measuring the ov ercurrent 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 the volt age 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 det ection voltage 3, v iov3 is defined by the volt age of the vm pin at which the dop pin voltage becomes ?high? when the voltage of vmp pi n 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 .
battery protection ic for 3-serial or 4-serial cell pack rev.3.0 _00 s-8243a/b series seiko instruments inc. 13 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 bet ween 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 rapidly in creased 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 dec reased 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 t he dop should be ?high? when v ctl1 = v ctl1h min. and ctl2 is open. pin voltages of the cop and t he 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. 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 battery 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 battery charging is inhibited. the cop pin voltage should be higher than v mp ? 1 v when the vmp pin voltage v mp = 24 v.
battery protection ic for 3-serial or 4-serial cell pack s-8243a/b series rev.3.0 _00 seiko instruments inc. 14 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 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 figure 5 (1 / 2)
battery protection ic for 3-serial or 4-serial cell pack rev.3.0 _00 s-8243a/b series seiko instruments inc. 15 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 5 (2 / 2)
battery protection ic for 3-serial or 4-serial cell pack s-8243a/b series rev.3.0 _00 seiko instruments inc. 16 ? operation 1. battery protection circuit remark refer to ? ? battery protection ic connection example ?. battery protection protects batteries from overcharge and overdischarge, and also protects external fets from overcurrent. 1. 1 normal status when all of the battery volt ages 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 dischargi ng fets are turned on. 1. 2 overcharge status when any one of the battery vo ltages 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 re sistor, and the charging fet is turned off to stop charging. the ov ercharge status 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 status 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. this is the overdischarge status. 1. 4 power down status after stopping discharging due to overdisc harge status, the s-8243 enter s power down status. in this status, 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 status, t he vmp pin is pulled down to v ss level by the internal r vsm resistor. in power down status, output pin voltages are fixed at the following levels. (a) cop high-z (charging fet is turned off) (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 status is releas ed when the following condition holds. (a) v mp >v iov3 (a charger is connected, 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 vmp pin voltage is vdd / 2 or higher. (a charger is connected.) 1. 5 overcurrent status the s-8243 has three overcu rrent 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 detecti on levels. when the discharging current becomes higher than a specifi ed 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 status in which the dop pin voltage becomes v dd level to turn off the discharging fet to stop dischargi ng, the cop pin becomes hi gh impedance and is pulled up to eb+ pin voltage by an external resistor to turn off the c harging 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 ov ercurrent 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 status is releas ed 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 cell pack rev.3.0 _00 s-8243a/b series seiko instruments inc. 17 1. 6 0 v battery charging function regarding the charging of a self-di scharged 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 external 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. ov ercurrent detection delay time 2,3 (t iov2 , t iov3 ) are fixed internally. s-8243aac, s-8243aad, s-8243bae, s-8243baf, s-8243bah 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 dr ive a micro 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 status 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 batteries to a microcomputer. the battery monitor amp output is controlled and selected by ctl3 and ctl4 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 status the battery monitor amp output is the v ss level.
battery protection ic for 3-serial or 4-serial cell pack s-8243a/b series rev.3.0 _00 seiko instruments inc. 18 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 ov er 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 ov ercharge 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) amss 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 cell pack rev.3.0 _00 s-8243a/b series seiko instruments inc. 19 ? timing charts 1. overcharge detection, over discharge detection (n = 1 to 4) v cun v dun v dln v cln battery voltage high-z v eb + 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 status *2 overcharge detection delay time (t cu ) overdischarge detection delay time (t dl ) v bat v ss vbatout pin voltage *1 v out v out v ss vreg pin voltage v dd high-z <1> <2> <1> <4> <1> <3> v iov3 *1. state depends on ctl3 and ctl4 input levels. refer to figure 9 . *2. <1>: normal status, <2>: overcharge status, <3 >: overdischarge status, <4>: power down status remark the charger is assumed to charge with a constant current. v eb + indicates the open voltage of the charger. figure 6
battery protection ic for 3-serial or 4-serial cell pack s-8243a/b series rev.3.0 _00 seiko instruments inc. 20 2. overcurrent detection v cu v du v dl v cl battery voltage v hc v hd v dd dop pin voltage v ss high-z v ss cop pin voltage high-z high-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> status *3 charger connected overcurrent detection delay time 1 ( t iov1 ) overcurrent detection delay time 3 ( t iov3 ) overcurrent detection delay time 2 ( t iov2 ) v eb + *1. v return = v dd / 6 (typ.) *2. state depends on ctl3 and ctl4 input levels. refer to figure 9 . *3. <1>: normal status, <2>: overcurrent status remark the charger is assumed to charge with a constant current. v eb + indicates the open voltage of the charger. figure 7
battery protection ic for 3-serial or 4-serial cell pack rev.3.0 _00 s-8243a/b series seiko instruments inc. 21 3. ctl1, ctl2 pin voltage cop pin voltage v ss v out v ss vbatout pin voltage *2 v dd v ss vreg pin voltage v out v bat v dd dop pin voltage v ss v dd v dd v dd v dd v dd v dd normal *1 normal *1 v dd high-z normal *1 normal *1 v dd v ss ctl1 pin voltage v out open v dd v ss v out open ctl2 pin voltage high-z hi g h-z high-z high-z hi g h-z high-z v eb + *1. state depends on each battery voltage and the vmp pin voltage. *2. state depends on ctl3 and ctl4 input levels. refer to figure 9 . figure 8
battery protection ic for 3-serial or 4-serial cell pack s-8243a/b series rev.3.0 _00 seiko instruments inc. 22 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) v eb + *1. state depends on ctl1 and ctl2 and each battery voltage and the vmp pin voltage. refer to figure 6 to 8 . figure 9
battery protection ic for 3-serial or 4-serial cell pack rev.3.0 _00 s-8243a/b series seiko instruments inc. 23 ? 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 1 1 to 100 k 8 r ctl2 1 1 to 10 k 9 r ctl3 1 1 to 10 k 10 r ctl4 1 1 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 . caution1. no resistance should be inserted in the power supply pin vdd. 2. the above constants are subject to change without prior notice. 3. it has not been confirmed whether the operation is normal or not in circuits other than the above example of connection. in addi tion, the example of connection s hown above and the constant will not guarantee successful operation. perform thorough evaluation using the actual application to set the constant.
battery protection ic for 3-serial or 4-serial cell pack s-8243a/b series rev.3.0 _00 seiko instruments inc. 24 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 1 1 to 100 k 9 r ctl2 1 1 to 10 k 10 r ctl3 1 1 to 10 k 11 r ctl4 1 1 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 . caution1. no resistance should be inserted in the power supply pin vdd. 2. the above constants are subject to change without prior notice. 3. it has not been confirmed whether the operation is normal or not in circuits other than the above example of connection. in addi tion, the example of connection s hown above and the constant will not guarantee successful operation. perform thorough evaluation using the actual application to set the constant.
battery protection ic for 3-serial or 4-serial cell pack rev.3.0 _00 s-8243a/b series seiko instruments inc. 25 ? 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 that ex ceeds the performance ratings of the built-in electrostatic protection circuit. ? seiko instruments inc. shall not be re sponsible for any patent infringement by products including the s-8243 series, the method of using the s-8243 series in su ch products, the product specifications or the country of destination thereof.
battery protection ic for 3-serial or 4-serial cell pack s-8243a/b series rev.3.0 _00 seiko instruments inc. 26 ? 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 above connection exampl e will not guarantee successful operation. perform thorough evaluation using the actual application.
battery protection ic for 3-serial or 4-serial cell pack rev.3.0 _00 s-8243a/b series seiko instruments inc. 27 ? characteristics (typical data) 1. current consumption 0 20 40 60 80 100 120 0 4 8 12 16 20 24 v dd [v] s-8243baf i ope ? v dd i ope [ a] 0 20 40 60 80 100 120 ? 40 ? 20 0 20406080 ta [c] s-8243baf i ope ? temp i ope [ a] 0.00 0.02 0.04 0.06 0.08 0.10 0 4 8 12 16 20 24 s-8243baf v dd [v] i pdn ? v dd i pdn [ a] 0.00 0.02 0.04 0.06 0.08 0.10 s-8243baf 0 20406080 ? 40 ? 20 ta [c] i pdn ? temp i pdn [ a] 2. overcharge detection/release voltage, overdi scharge detection/release 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 s-8243baf 0 20 40 60 80 ? 40 ? 20 ta [c] v cu ? temp v cu [v] 3.95 3.97 3.99 4.01 4.03 4.05 s-8243baf 020406080 ? 40 ? 20 ta [c] v cl ? temp v cl [v] 2.300 2.325 2.350 2.375 2.400 2.425 2.450 2.475 2.500 s-8243baf 0 20 40 60 80 ? 40 ? 20 ta [c] v du ? temp v du [v] 2.32 2.34 2.36 2.38 2.40 2.42 2.44 2.46 2.48 s-8243baf 0 20 40 60 80 ? 40 ? 20 ta [c] v dl ? temp v dl [v] 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 s-8243baf v dd [v] v iov1 ? v dd v iov1 [v] 0.175 0.180 0.185 0.190 0.195 0.200 0.205 0.210 0.215 0.220 0.225 s-8243baf 0 20 40 60 80 ? 40 ? 20 ta [c] v iov1 ? temp v iov1 [v]
battery protection ic for 3-serial or 4-serial cell pack s-8243a/b series rev.3.0 _00 seiko instruments inc. 28 ? 0.60 ? 0.55 ? 0.50 ? 0.45 ? 0.40 10 12 14 16 s-8243baf v dd [v] v iov2 ? v dd v iov2 [v] v dd reference ? 0.60 ? 0.55 ? 0.50 ? 0.45 ? 0.40 ? 40 ? 20 020406080 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 s-8243baf v dd [v] v iov3 ? v dd v iov3 / v dd 0.425 0.450 0.475 0.500 0.525 0.550 0.575 ta [c] s-8243baf v iov3 ? temp v iov3 / v dd ? 40 ? 20 0 20 40 60 80 0 5 10 15 0 0.2 0.4 0.6 0.8 1.0 s-8243baf c ct [ f] t cu ? c ct t cu [s] 0.0 0.5 1.0 1.5 2.0 2.5 ? 40 ? 20 0 20 40 60 80 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 1.0 s-8243baf c dt [ f] t dl ? c dt t dl [ms] 0 50 100 150 200 250 ? 40 ? 20 020406080 ta [c] t dl [ms] s-8243baf t dl ? temp c dt = 0.1 f 0 50 100 150 0 0.2 0.4 0.6 0.8 1.0 s-8243baf c dt [f] t iov1 ? c dt t iov1 [ms] 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 020406080 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 cell pack rev.3.0 _00 s-8243a/b series seiko instruments inc. 29 3. cop / dop pin current 0.00 0.02 0.04 0.06 0.08 0.10 0 4 8 12 16 20 24 s-8243baf v cop [v] i coh ? v cop i coh [ a] 0 5 10 15 20 25 30 35 40 0 3.5 7.0 10.5 14.0 s-8243baf v cop [v] i col ? v cop i col [ma] ? 5 ? 4 ? 3 ? 2 ? 1 0 0 1.8 3.6 5.4 7.2 s-8243baf v dop [v] i doh ? v dop i doh [ma] 0 5 10 15 20 25 30 35 40 0 3.5 7.0 10.5 14.0 s-8243baf v dop [v] i dol ? v dop i dol [ma] 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 04812162024 i out = 5 a 100 a 3 ma 10 ma s-8243baf v dd [v] v out ? v dd v out [v] v dd = 0 24 v, ta = 25c 0.0 1.0 2.0 3.0 4.0 0 20 40 60 80 100 v dd = 6 v 14 v 18 v 10 v i out [ma] v out ? i out v out [v] v1 = v2 = v3 = v4 = v bat s-8243baf 0.0 1.0 2.0 3.0 4.0 0 20 40 60 80 100 85c ta = ? 40c 25c i out [ma] v out ? i out v out [v] s-8243baf
battery protection ic for 3-serial or 4-serial cell pack s-8243a/b series rev.3.0 _00 seiko instruments inc. 30 5. battery monitor amp 150 155 160 165 170 175 180 1 2 3 4 5 v off3 s-8243baf v bat [v] v off ? v bat v off [mv] v1 = v2 = v3 = v4 = v bat v off4 v off2 v off1 150 155 160 165 170 175 180 ? 40 ? 20 020406080 ta [c] v off [mv] s-8243baf v off ? temp v off3 v off4 v off2 v off1 0.198 0.199 0.200 0.201 0.202 1 2 3 4 5 gamp s-8243baf gamp4 gamp3 gamp2 gamp1 v bat [v] gamp ? v bat v1 = v2 = v3 = v4 = v bat 0.198 0.199 0.200 0.201 0.202 ? 40 ? 20 0 20 40 60 80 ta [c] gamp gamp ? temp s-8243baf gamp4 gamp3 gamp2 gamp1

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www.sii-ic.com ? the information described herein is subject to change without notice. ? seiko instruments inc. is not responsible for any pr oblems caused by circuits or diagrams described herein whose related industrial properties, patents, or ot her rights belong to third parties. the application circuit examples explain typical applications of the products, and do not guarant ee the success of any specific mass-production design. ? when the products described herein are regulated produ cts subject to the wassenaar arrangement or other agreements, they may not be exported without authoriz ation from the appropriate governmental authority. ? use of the information described he rein for other purposes and/or repr oduction or copying without the express permission of seiko instrum ents inc. is strictly prohibited. ? the products described herein cannot be used as par t 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 oc cur. 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.

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