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| ?? 5 ! ic one cell lithium-ion/polymer battery protection ic ] ? 2 - 0 ]? 2??? ? j d fhi01 1 pin configuration _ pin1 pin6 pin5 pin4 pin3 pin2 figure 1 sot-23-6l description & features c the fhi01 series battery pr otection ic is designed to protect lithium-ion/polymer battery from damage or degrading the lifetime due to overcharge over-discharge and/or over-current for one-cell lithium-ion/polymer battery powered systems ,such as cellular phones the ultra-small package and less required external components make it ideal to integrate the fhi01 in to the limited space of battery pack. the accurate 50mv overcharging detection voltage ensures safe and full utilization charging. the very low standby current drains little current from the cell while in storage. fhi01 ?a???????x? ????oH? ???o?^?^ ?^?? ?b^?L??? ???C????gY? 50mv ^?zy?C??? ?CBr^ miniature package sot-23-6 low dissipation ultra-low quiescent current at 3.5a ultra-low power-down current at 0.3a precision overcharge protection voltage 4.3 50mv(top=25 ) for fhi01. load detection function during over-current mode 0.1v 0.18v delay time are generated by external capacitor c2,when c2=0.01 f, the delay time about 120ms. less required external components tow resistors and two capacitors. ??b sot-23-6 ??O?oB 3.5a O??C 0.3a ???zy?? 4.3 50mv(top=25 ) ^o? 0.1v 0.18v ^??r c2=0.01 f r , s 120ms ^?L???k? applications protection ic for one-cell li thium-ion/lithium-polymer battery pack. high precision protectors for cell-phone and any other gadgets using on board lithium-ion/polymer battery. x????o?y ???C??o??? ?a? ?? 5 ! ic one cell lithium-ion/polymer battery protection ic ] ? 2 - 0 ]? 2??? ? j d fhi01 2 pin description _ pin no. symbol description 1 do output of over-discharge detection,cmos output ^?o? cmos ? 2 v- pin for charger hegative input ??? 3 co output of over-discharge detection,cmos output ^?o? cmos ? 4 ct pin for external capacitor setting output delay of vd1 vd1 ??r{ 5 vdd power supply,through a resistor(r1) ?^ r1 ?? 6 vss ground pin ? ordering information ??Y? package b temperature range ?? part number a?? marking id packing type b FHI01A-YT pa + week no. tape sot-23-6 -40c ~ 85c fhi01b-yt pb + week no. tape type name ? fhi01 x - y t packing type b? t tape type a?? b bulk ?b voltage package b? y sot-23 -6 ? block diagram ?D sampling voltage reference dormancy control overcharge overdischarge over current charger delay vdd v- co do ct circuit detector detector timer detector detector control logic a 4.3 0.05v b 4.2 0.05v ?? 5 ! ic one cell lithium-ion/polymer battery protection ic ] ? 2 - 0 ]? 2??? ? j d fhi01 3 absolute maximum ratings (t a =25 ) ~? (note ) rating ~? characteristic ? symbol ? min max unit supply voltage ?? v dd -0.3 12 v co output pin voltage co ?? vco v dd -26 v dd +0.3 v do output pin voltage do ?? vdo v dd -0.3 v dd +0.3 v ct input pin voltage ct ?? vct v dd -0.3 v dd +0.3 v v- input pin voltage v- ?? v- v dd -26 v dd +0.3 v operating temperature range ?? topt -40 85 c storage temperature range ?? ts t g -55 125 c note absolute maximum ratings are threshold limit values that must not e exceeded ever for an instant under any conditions. moreover, such values for any two items mu st not be reached simultaneously. operation above these absolute maximum ratings may cause degradation or perma nent damage to the device. these are stress ratings only and do not necessarily imply functional operation below these limits. ??^??O? , r??O??rg??^????^??r_ O . ??? , p?@HH??? , K???? O?? electrical characteristics item symbol conditions min. typ. max. unit operating input voltage ? v dd1 voltage defined as v dd -v ss 1.5 10 v minimum operating voltage for 0v charging ???r? v st voltage defined as v dd -v-, v dd -v ss =0v 1.2 v over-charge threshold ^? v det1 detect rising edge of supply voltage 4.25 4.3 4.35 v release voltage for overcharge detection ^??? v rel1 v dd =3.6 4.35v ct=10nf 4.075 4.15 4.175 v output delay of overcharge ^?trg t v det1 90 125 160 ms over-discharge threshold ^?? v det2 detect falling edge of supply voltage v-=0v 2.45 2.5 2.65 v release voltage for over-discharge detection ^??? v rel2 2.85 2.95 3.05 v output delay of over-discharge ^?trg t v det2 v dd =3.6 2.4v ct=10nf 5 10 25 ms excess current threshold ^? v det3 detect rising edge of v- pin voltage 0.10 0.14 0.18 v output delay of excess current t v det3 ct=10nf 5 13 25 ms ?? 5 ! ic one cell lithium-ion/polymer battery protection ic ] ? 2 - 0 ]? 2??? ? j d fhi01 4 ^?trg short protection voltage o? v short v dd =3.0v detect voltage of v- pin v dd -1.2 v dd -0.9 v dd -0.6 v output delay of short protection ?t t short v dd =3.0v 10 15 25 s nch on voltage of co co ?? vol1 v-=0v v dd =4.4v 0.3 0.5 v pch on voltage of co co ?? voh1 v dd =3.9v io1=-50 a 3.4 3.7 v nch on voltage of do do ?? vol2 v dd =2.4v io1=50 a 0.2 0.5 v pch on voltage of do do ?? voh2 v dd =3.9v io1=-50 a 3.4 3.7 v supply current ? i dd v dd =3.9v v-=0v 3.6 6.0 a standby current i standby v dd =2.0v 0.3 0.6 a note considering of variation in process parameters we compensate for this characte ristic related to temperature by laser-trim however this specification is guaranteed by design not production tested. ??@^?c?P? , HO?ay? typical applications ?D m2 m1 batt- batt+ r2 1k mosfet c1 0.01uf c1 0.1uf r1 100 fhi01 2 v- 3 co 1 do vss 6 ct 4 vdd 5 application hints ? D?D , ??]? r1 c1 ? fhi01 ?h r1 ? 100 W? fhi01, r1 ? ,r1 ???zy???a` r2 c????Y , ? v- _? , ???_ r2 ?^??^zya `h r2 ? 1k W? r1 r2 ??O`???O??r , ?o ct _ c2, ??^?otrg???? c2 ?? , ^trg?L PS?? c2(f) / ? 0.001f 0.005f 0.01f t vdet1 (ms) / ^?trg 13 66 125 t vdet2 (ms) / ^?trg 1 5 10 t vdet3 (ms) / ^?trg 1.3 6.5 13 ?? 5 ! ic one cell lithium-ion/polymer battery protection ic ] ? 2 - 0 ]? 2??? ? j d fhi01 5 description of operation vd1/ overcharge protection ^?o vd1 O v dd _? v dd ????? v det1 ?r^?o? v det1 vd1 ?zy^?BK????? n ? mosfet D ? P ? ?B?r co ? ?B??? v- ???C??g_ ??Nr? vd1 ?zy^ co _?DA? vd1 ???y? ^? ?Nr??? v dd ???^??? v det1 ?r?Nr c??M_K?d?? v dd ? v rel1 ??r vd1 ?^{B v ss _ ct _? c2 O^?o?trg??zy^ ?K^??r????????B?P? v dd ?? v det1 ? v dd ????r?rg??? v det1 ? N vd1 ??P?????r?rg ct P , w??? co _???n?DQM???r?c v- _? , ??r c v dd _? vd2/over-discharge detector ^?o vd2 Oy v dd _? v dd ??^?o? v det2 r vd2 ?^?? r^??r? do ??P??? n ? mosfet r v- A? ??r?rg ct P ?zy^? do _???A???r????^ ???? v rel2 r do A?^?o??? ?w?rB????y??? vst ?? (1.2v) rM ? vd2 zy^?s 2.2v ?MCB v dd =2.0v rCB 0.3a ?? ?zy vd1 ?Cr do ? do _?? cmos ??? v dd ??? v ss vd3/excess current detect or, short circuit protector ^zyo ? mosfet ?B????Br^Oy?o??? v- ?l^?? v det3 rr do ^??r??P]?? n ? mosfet v- ??M??Br do ???P] n ? mosfet ?o ? ??r v- ??c v ss Bk? 100k ? ^ozy??^?? v- _??^? (100k ) v ss ??^?? n ? mosfet ??????_??B v dd ?? v det2 ???^zy fhi01 MCBf? v dd ?? v det2 ???MCB fhi01 ?zy?MCB ?r co c do ??P]??? mosfet |
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