22 power supply s-8491 series lithium-ion battery protection ic features ? built-in high-accuracy voltage detection circuits excess charge detection voltage : 4.30 0.05v (s-8491aup) excess charge release voltage : 4.00 0.13v (s-8491aup) excess discharge detection voltage : 2.30 0.10v excess discharge release voltage : 3.00 0.15v (s-8491aup) excess current detection voltage : 0.20 0.06v ? built-in delay circuit the excess charge, excess discharge or excess current is de- tected with delay. ? ultra-low current consumption operation : 15.0 m a max. (+25 c) power down : 0.48 m a max. (+25 c) ? sot-89-5 package the s-8491 series is a series of lithium-ion rechargeable battery protection ics incorporating high-accuracy voltage detectors and a delay circuit. this series is suitable for protecting a single-cell pack. pin configurations specifications (for 1-cell) ] please design all applications of the s-8491 series with safety in mind. s-8491aup-dka-t2 s-8491bup-dkb-t2 s-8491cup-dkc-t2 s-8491dup-dkd-t2 s-8491eup-dke-t2 4.30 ?0.05v 4.35 ?0.05v 4.25 ?0.05v 4.25 ?0.05v 4.25 ?0.05v excess charge detection voltage model no. excess charge release voltage excess discharge release voltage 4.00 ?0.13v 4.10 ?0.13v 4.05 ?0.13v 4.05 ?0.13v 3.95 ?0.13v 3.00 ?0.15v 3.00 ?0.15v 2.70 ?0.15v 2.40 ?0.15v 3.00 ?0.15v 1 : co 5 : cm 2 : v cc 3 : do 4 : v ss sot-89-5 top view 1 5 3 4 2 s-8232 series lithium-ion battery protection ic features the s-8232 is a series of lithium-ion rechargeable battery protection ics incorporating high-accuracy voltage detec- tion circuits and delay circuits. it is suitable for a 2-serial-cell lithium-ion battery pack. pin configurations selection guide (for 2-cell) ? internal high-accuracy voltage detection circuit ? over charge detection voltage 3.90 v 25 mv to 4.60 v 25 mv 5 m v - step ? over charge release voltage 3.60 v 50 mv to 4.60 v 50 mv 5 m v - step (the over charge release voltage can be selected within the range where a difference from over charge detection voltage is 0 to 0.3 v) ? over discharge detection voltage 1.70 v 80 mv to 2.60 v 80 mv 50 mv - step ? over discharge release voltage 1.70 v 100 mv to 3.80 v 100 mv 50 mv - step (the over discharge release voltage can be selected within the range where a difference from over discharge detection voltage is 0 to 1.2v) ? over current detection voltage 1 0.07 v 20 mv to 0.30 v 20 mv 5 mv-step ? high input-voltage device (absolute maximum rating: 18 v) ? wide operating voltage range: 2.0 v to 16 v ? the delay time for every detection can be set via an external capacitor. each delay time for over charge detection, over discharge detection, over current detection are proportion of hundred to ten to one. ? two over current detection levels (protection for short-circuiting) ? internal auxiliary over voltage detection circuit (fail safe for over voltage) ? internal charge circuit for 0v battery (unavailable is option) ? low current consumption operation 7.5 m a typ. 14.2 m a max (-40 to +85 c) power-down mode 0.2 na typ. 0.1 m a max (-40 to +85 c) ? tssop package (8-pin) 6.4 mm x 3.1 mm sens 1 8 v cc do 2 7 vc co 3 6 ict vm 4 5 top view v ss tssop - 8 s-8232aaft-t2 s-8232abft-t2 s-8232acft-t2 s-8232aeft-t2 s-8232afft-t2 s-8232agft-t2 s-8232ahft-t2 s-8232aift-t2 s-8232ajft-t2 S-8232AKFT-T2 s-8232alft-t2 s-8232amft-t2 s-8232anft-t2 s-8232aoft-t2 s-8232apft-t2 model/item 4.25v?5mv 4.35v?5mv 4.35v?5mv 4.35v?5mv 4.25v?5mv 4.25v?5mv 4.25v?5mv 4.325v?5mv 4.25v?5mv 4.20v?5mv 4.30v?5mv 4.19v?5mv 4.325v?5mv 4.30v?5mv 4.28v?5mv 4.05v?0mv 4.15v?0mv 4.15v?0mv 4.28v?0mv 4.05v?0mv 4.05v?0mv 4.05v?0mv 4.325v *1,2 4.05v?0mv 4.00v?0mv 4.05v?0mv 4.19v *1 4.325v *1,3 4.05v?0mv 4.05v ?0mv 2.40v?0mv 2.30v?0mv 2.30v?0mv 2.15v?0mv 2.30v?0mv 2.20v?0mv 2.20v?0mv 2.40v?0mv 2.40v?0mv 2.30v?0mv 2.00v?0mv 2.00v?0mv 2.40v?0mv 2.00v?0mv 2.30v?0mv 3.00v?00mv 3.00v?00mv 3.00v?00mv 2.80v?00mv 2.70v?00mv 2.40v?00mv 2.40v?00mv 3.00v?00mv 3.00v?00mv 2.90v?00mv 3.00v?00mv 3.00v?00mv 3.00v?00mv 3.00v?00mv 2.90v?00mv 0.150v?0mv 0.300v?0mv 0.300v?0mv 0.100v?0mv 0.300v?0mv 0.200v?0mv 0.300v?0mv 0.300v?0mv 0.150v?0mv 0.200v?0mv 0.200v?0mv 0.190v?0mv 0.300v?0mv 0.230v?0mv 0.100v?0mv 1.0 sec 1.0 sec 1.0 sec 1.0 sec 1.0 sec 1.0 sec 1.0 sec 1.0 sec 1.0 sec 1.0 sec 1.0 sec 1.0 sec 1.0 sec 1.0 sec 1.0 sec available available unavailable available available available available unavailable unavailable available available available unavailable available unavailable over charge detection voltage over charge release voltage over discharge detection voltage over discharge release voltage over current detection voltage 1 over charge detection delay (c3=0.22 m f) 0v battery charging function *1) without over charge detection/release hysteresis. *2) final over charge magnification: x 1.11. the others: x 1.25. *3) without final over charge function change in the detection voltage is available in products other than the above listed ones. please contact with our sales divisi on. ] please design all applications of s-8232 series with safety in mind.
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