View EUP9232ACQIR1_3048280.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

eup9232 ds9232 ver1.1 feb. 2007 1 li-ion/polymer two cell protector description the eup9232 series are lithium-ion rechargeable battery protection ics incorporating high-accuracy voltage detection circuits and delay circuits. the eup9232 series are suitable for a 2-cell serial lithium- ion battery pack. features z highly accurate voltage detector????...overcharge detection (topt=+25c) 25mv overcharge hysteresis 50mv overdischarge detection 80mv overcurrent 1 detection 20mv z variety of detector???????????o vercharge detection 4.25v-4.35v step of 5mv overcharge hysteresis 0.0v-0.4v *1 step of 50mv overdischarge detection 2.0v-2.4v step of 10mv overdischarge hysteresis 0.0v-1v *2 step of 100mv overcurrent 1 detection 0.095v-0.3v step of 10mv overcurrent 2 detection 0.9v(fixed) *1 overcharge release voltage=over detec tion voltage-overcharge hysteresis voltage *2 overdischarge release voltage = overdischarge detection voltage-overdischarge hysteresis voltage. z high input-voltage device: absolute maximum ratings 28v z wide operating voltage range :2 to 16v z the delay time for every detection can be set via an external capacitor. (each delay time for overcharge detection, ov erdischarge detection, over curent detection are ?proportion of hundred to ten to one?.) z two overcurrent detection levels (p rotection for shourt-circuiting) z internal auxiliary over voltage detection circ uit (fall-safe for overcharge detection voltage) z internal charge circuit for 0v battery (unavailable is option) z low current consumption ? operation mode: 5a typ. 12a max. (-40 to +85c) ? power-down mode 0.1a max. (-40 to +85c) z package: tssop-8 z rohs compliant and 100% lead (pb)-free applications z lithium-ion rechar geable battery packs.
eup9232 ds9232 ver1.1 feb. 2007 2 block diagram figure1. pin configurations packa g e t yp e pin confi g urations tssop-8 pin description pin no. symbol pin description 1 sens detection pin for voltage between sens and vc (detection for overcharge and overdischarge) 2 do fet gate connection pin for discharge control (cmos output) 3 co fet gate connection pin for charge control (cmos output) 4 vm detection pin for voltage between vm and vss (overcurrent detection pin) 5 vss negative power input pin 6 ict capacitor connection pin for detection delay 7 vc middle voltage input pin 8 vcc positive power input pin
eup9232 ds9232 ver1.1 feb. 2007 3 absolute maximum ratings ? input voltage between v cc and v ss -------------------------------------------------- v ss -0.3 v to v ss +18 v ? input pin voltage for vm -------------------------------------------------------------- v cc -28v to v cc +0.3 v ? input pin voltage for sens and ict ------------------------------------------------- v ss -0.3v to v cc +0.3 v ? output pin voltage for co ------------------------------------------------------------- v vm -0.3 v to v cc +0.3 v ? output pin voltage for do --------------------------------------------------------------- v ss -0.3 v to v cc +0.3 v ? power dissipation tssop-8---------------------------------------------------------------------------- 300mw ? operating temperature range --------------------------------------------------------------------- -40c to +85c ? storage temperature range --------------------------------------------------------------------- -40c to +125c ordering information order number package type markin g operating temperature range eup9232aaqir1 tssop-8 xxxx p9232a -40c to 85c eup9232abqir1 tssop-8 xxxx p9232b -40c to 85c EUP9232ACQIR1 tssop-8 xxxx p9232c -40c to 85c eup9232adqir1 tssop-8 xxxx p9232d -40c to 85c eup9232aeqir1 tssop-8 xxxx p9232e -40c to 85c eup9232afqir1 tssop-8 xxxx p9232f -40c to 85c eup9232agqir1 tssop-8 xxxx p9232g -40c to 85c eup9232ahqir1 tssop-8 xxxx p9232h -40c to 85c eup9232 ???? ?? ?? ?? ?? lead free code 1:lead free 0:lead packing r: tape& reel operating temperature range i: industry standard package type q: tssop-8 model no.
eup9232 ds9232 ver1.1 feb. 2007 4 application circuit figure2. symbol parts purpose recommend min. max. remarks fet1 nch mosfet discharge control ? ? ? ? fet2 nch mos fet charge control ? ? ? ? r1 chip resistor esd protection 1k ? 300 ? 1 k ? ? c1 chip capacitor filter 0.22 f 0 f 1 f ? r2 chip resistor esd protection 1k ? 300 ? 1 k ? ? c2 chip capacitor filter 0.22 f 0 f 1 f ? r4 chip resistor esd protection 1 k ? = r1 min. = r1 max. same value as r1 and r2. *1 c3 chip capacitor delay time setting 0.22 f 0 f 1 f attention should be paid to leak current of c3. *2 r3 chip resistor protection for charger reverse connection 1 k ? 300 ? 5 k ? discharge can?t be stopped at less than 300 ? when a charger is reverse-connected. *3 *1 r4=r1 is required. overcharge detection voltage increases by r4. for example 10 k ? (r4) increases overcharge detection voltage by 20 mv. *2 the overcharge detection delay time (t cu ), the overdischarge detection delay time (t dd ), and the over current detection delay time (t iov ) change with the external capacitor c3. refer to the ? electrical characteristics ?. *3 when the resistor r3 is set less than 300 [ and a charger is reverse-connected, current which exceeds the power dissipation of the package will flow and the ic may break. caution 1.the above constants may be changed without notice. 2. it has not been confirmed whether the operation is normal or not in circuits other than the above example of connection. in addition, the example of connection shown above and the constant do not guarantee proper operation. perform through evaluation using the actual application to set the constant.
eup9232 ds9232 ver1.1 feb. 2007 5 product name list model / no. overcharge detection voltage1,2 [v cu1, v cu2 ] overcharge release voltage 1,2 [v cd1, v cd2 ] overdischarge detection voltage 1,2 [v dd1, v dd2 ] overdischarge release voltage 1,2 [v du1, v du2 ] overcurrent detection voltage 1 [v iov1 ] overcharge detection delay time [t cu ] c3 = 0.22uf 0v battery charge function eup9232aa 4.28 v 4.05 v 2.3 v 2.9 v 0.095 v 1.0 s available eup9232ab 4.25 v 4.05 v 2.4 v 3.0 v 0.15 v 1.0 s available eup9232ac 4.30 v 4.05 v 2.0 v 3.0 v 0.30 v 1.0 s available eup9232ad 4.30 v 4.05 v 2.4 v 3.0 v 0.21 v 1.0 s unavailable eup9232ae 4.325 v 4.05 v 2.3 v 2.9 v 0.21 v 1.0 s unavailable eup9232af 4.325 v 4.15 v 2.3 v 2.9 v 0.30 v 1.0 s unavailable eup9232ag 4.35 v 4.15 v 2.3 v 3.0 v 0.21 v 1.0 s available eup9232ah 4.35 v 4.15 v 2.3 v 3.0 v 0.30 v 1.0 s available note: it is possible to change the detection voltages of the pr oduct other than above. for deta ils, please contact our sales of fice. detection voltage symbol selection range unit overcharge detection voltage 1,2 v cu1,2 4.25 4.28 4.3 4.325 4.35 overcharge release voltage 1,2 v cd1,2 3.9 4 4.05 4.15 overdischarge detection voltage 1,2 v dd1,2 2 2.2 2.3 2.4 overdischarge release voltage 1,2 v du1,2 2.5 2.8 2.9 3 overcurrent detection voltage 1 v iov1 0.095 0.15 0.21 0.3 v function selection 0v battery charge function available unavailable
eup9232 ds9232 ver1.1 feb. 2007 6 electrical characteristics (1 ) except detection delay time (25c) (ta=25c unless otherwise specified) symbol parameter condition min typ max unit test condition test circuit detection voltage v cu1,2 overcharge detection voltage 1,2 3.90 to 4.60v adjustable v cu1,2 -0.025 v cu1,2 v cu1,2 +0.025 v 1,2 1 v cuaux1,2 auxiliary overcharge detection voltage 1,2 v cu1,2 delay time (c3=0.22f) t cu1,2 overcharge detection delay time 1,2 1.0s 0.7 1.00 1.4 s 8,9 5 t dd1,2 overdischarge detection delay time1,2 0.1s 68 100 138 ms 8,9 5 t iov1 overcurrent detection delay time 1 0.01s 6.7 10 13.9 ms 10 5 t iov2 overcuttent detection delay time 2 - - 220 - us 14 1 input voltage, operation voltage v dsop1 operation voltage between vcc and vss internal circuit operating voltage 2.0 --- 16 v --- --- v dsop2 operation voltage between vcc and vm *3 internal circuit operating voltage 2.0 --- 28 v --- --- current consumption i ope current consumption during normal operation v1=v2=3.6v - 5 10 a 4 2 i pdn current consumption at power down v1=v2=1.5v - - 0.1 a 4 2 output voltage v do(h) do voltage ?h? i out =10 a v cc -0.05 v cc -0.003 v cc v 6 3 v do(l) do voltage ?l? i out =10 a v ss vss +0.003 v ss +0.05 v 6 3 v co(h) co voltage ?h? i out =10 a v cc -0.15 v cc -0.019 v cc v 7 4 v co(l) co voltage ?l? i out =10 a v ss vss +0.003 v ss +0.05 v 7 4 internal resistance r vcm resistance between vcc and vm v1=v2=1.5v v vm =0v 100 300 900 k ? 5 2 r vsm resistance between vss and vm v1=v2=3.5v v vm =1.0v 50 100 170 k ? 5 2
eup9232 ds9232 ver1.1 feb. 2007 7 electrical characteristics (1 ) except detection delay time (25c) (ta=25c unless otherwise specified) symbol parameter condition min typ max unit test condition test circuit 0v battery charging function v 0cha 0v battery charge starting charger voltage 0v battery charging function ?available? 0.38 0.75 1.12 v 11 6 v 0inh1,2 0v battery charge inhibition battery voltage 1,2 0v battery charging function ?unavailable? 0.32 0.88 1.44 v 12,13 6 *1. temperature coefficient 1 for detection voltage should be applied to overcharge detection voltag e, overcharge release volta ge, overdischarge detection voltage, and overdischarge release voltage. *2. temperature coefficient 2 for detection voltage should be applied to overcurrent detection voltage. *3. the do and co pin logic are esta blished at the operating voltage. electrical characteristics (2 ) except detection delay time (-20c to +70c) (ta= -20c to +70c unless otherwise specified) symbol parameter condition min typ max unit test condition test circuit detection voltage v cu1,2 overcharge detection voltage 1,2 3.90 to 4.60v adjustable v cu1,2 -0.045 v cu1,2 v cu1,2 +0.040 v 1,2 1 v cuaux1,2 auxiliary overcharge detection voltage 1,2 v cu1,2 delay time (c3=0.22f) t cu1,2 overcharge detection delay time 1,2 1.0s 0.6 1.00 1.84 s 8,9 5 t dd1,2 overdischarge detection delay time1,2 0.1s 67 100 140 ms 8,9 5 t iov1 overcurrent detection delay time 1 0.01s 6.5 10 14.5 ms 10 5 t iov2 overcuttent detection delay time 2 - - 220 - us 14 1 input voltage, operation voltage v dsop1 operation voltage between vcc and vss internal circuit operating voltage 2.0 --- 16 v --- --- v dsop2 operation voltage between vcc and vm *3 internal circuit operating voltage 2.0 --- 28 v --- ---
eup9232 ds9232 ver1.1 feb. 2007 8 electrical characteristics (2 ) except detection delay time (-20c to +70c) (ta= -20c to +70c unless otherwise specified) current consumption i ope current consumption during normal operation v1=v2=3.6v - 5 11 a 4 2 i pdn current consumption at power down v1=v2=1.5v - - 0.1 a 4 2 output voltage v do(h) do voltage ?h? i out =10 a v cc -0.14 v cc -0.003 v cc v 6 3 v do(l) do voltage ?l? i out =10 a v ss vss +0.003 v ss +0.14 v 6 3 v co(h) co voltage ?h? i out =10 a v cc -0.24 v cc -0.019 v cc v 7 4 v co(l) co voltage ?l? i out =10 a v ss vss +0.003 v ss +0.14 v 7 4 internal resistance r vcm resistance between vcc and vm v1=v2=1.5v v vm =0v 83 300 1200 k ? 5 2 r vsm resistance between vss and vm v1=v2=3.5v v vm =1.0v 40 100 190 k ? 5 2 0v battery charging function v 0cha 0v battery charge starting charger voltage 0v battery charging function ?available? 0.29 0.75 1.21 v 11 6 v 0inh1,2 0v battery charge inhibition battery voltage 1,2 0v battery charging function ?unavailable? 0.23 0.88 1.53 v 12,13 6 *1. temperature coefficient 1 for detection voltage should be applied to overcharge detection voltag e, overcharge release volta ge, overdischarge detection voltage, and overdischarge release voltage. *2. temperature coefficient 2 for detection voltage should be applied to overcurrent detection voltage. *3. the do and co pin logic are established at the operating voltage. electrical characteristics (3 ) except detection delay time (-40c to +85c) (ta= -40c to +85c unless otherwise specified) symbol parameter condition min typ max unit test condition test circuit detection voltage v cu1,2 overcharge detection voltage 1,2 3.90 to 4.60v adjustable v cu1,2 -0.055 v cu1,2 v cu1,2 +0.045 v 1,2 1 v cuaux1,2 auxiliary overcharge detection voltage 1,2 v cu1,2 1.31 v 1,2 1 v cd1,2 overcharge release voltage 1,2 3.60 to 4.60v adjustable v cd1,2 -0.080 v cd1,2 v cd1,2 +0.070 v 1,2 1 v dd1,2 overdischarge detection voltage 1,2 1.70 to 2.60v adjustable v dd1,2 -0.110 v dd1,2 v dd1,2 +0.100 v 1,2 1 v du1,2 overdischarge release voltage 1,2 1.70 to 3.80v adjustable v du1,2 -0.130 v du1,2 v du1,2 +0.120 v 1,2 1 v iov1 overcurrent detection voltage1 0.07 to 0.03v adjustable v iov1 -0.033 v iov1 v iov1 +0.033 v 3 1 v iov2 overcurrent detection voltage 2 load short circuit 0.4 0.9 1.4 v 3 1 t coe1 temperature coefficient 1 for detection voltage *1 ta= -40 to +85c -0.6 0 0.6 mv/c --- --- t coe2 temperature coefficient 2 for detection voltage *2 ta= -40 to +85c -0.24 -0.05 0 mv/c --- ---
eup9232 ds9232 ver1.1 feb. 2007 9 electrical characteristics (3 ) except detection delay time (-40c to +85c) (ta= -40c to +85c unless otherwise specified) delay time (c3=0.22f) t cu1,2 overcharge detection delay time 1,2 1.0s 0.55 1.00 2.06 s 8,9 5 t dd1,2 overdischarge detection delay time1,2 0.1s 67 100 141 ms 8,9 5 t iov1 overcurrent detection delay time 1 0.01s 6.3 10 14.7 ms 10 5 t iov2 overcuttent detection delay time 2 - - 220 - us 14 1 input voltage, operation voltage v dsop1 operation voltage between vcc and vss internal circuit operating voltage 2.0 --- 16 v --- --- v dsop2 operation voltage between vcc and vm *3 internal circuit operating voltage 2.0 --- 28 v --- --- current consumption i ope current consumption during normal operation v1=v2=3.6v - 5 12 a 4 2 i pdn current consumption at power down v1=v2=1.5v - - 0.1 a 4 2 output voltage v do(h) do voltage ?h? i out =10 a v cc -0.17 v cc -0.003 v cc v 6 3 v do(l) do voltage ?l? i out =10 a v ss vss +0.003 v ss +0.17 v 6 3 v co(h) co voltage ?h? i out =10 a v cc -0.27 v cc -0.019 v cc v 7 4 v co(l) co voltage ?l? i out =10 a v ss vss +0.003 v ss +0.17 v 7 4 internal resistance r vcm resistance between vcc and vm v1=v2=1.5v v vm =0v 78 300 1310 k ? 5 2 r vsm resistance between vss and vm v1=v2=3.5v v vm =1.0v 30 100 200 k ? 5 2 0v battery charging function v 0cha 0v battery charge starting charger voltage 0v battery charging function ?available? 0.26 0.75 1.25 v 11 6 v 0inh1,2 0v battery charge inhibition battery voltage 1,2 0v battery charging function ?unavailable? 0.2 0.88 1.57 v 12,13 6 *1. temperature coefficient 1 for detection voltage should be applied to overcharge detection voltag e, overcharge release volta ge, overdischarge detection voltage, and overdischarge release voltage. *2. temperature coefficient 2 for detection voltage should be applied to overcurrent detection voltage. *3. the do and co pin logic are esta blished at the operating voltage.
eup9232 ds9232 ver1.1 feb. 2007 10 test circuits (1) test condition 1, test circuit 1 set s1=off, v1= v2 =3.6 v, and v3= 0 v under normal condition. increase v1 from 3.6v gradually. the v1 voltage when co = ?l? is overcharge detection voltage 1 (v cu1 ). decrease v1 gradually. the v1 voltage when co = ?h? is overcharge release voltage 1(v cd1 ). further decrease v1. the v1 voltage when do= ?l? is overdischarge voltage 1(v dd1 ). increase v1 gradually. the v1 voltage when do = ?h? is overdischarge release voltage 1 (v du1 ). set s1 = on, and v1= v2= 3.6 v and v3 = 0 v under normal condition. increase v1 from 3.6v gradually. the v1 voltage when co = ?l? is auxiliary overcharge detection voltage 1 (v cuaux1 ). (2) test condition 2, test circuit 1 set s1=off, v1= v2 =3.6 v, and v3= 0v under normal condition. increase v2 from 3.6v gradually. the v2 voltage when co = ?l? is overcharge detection voltage 2 (v cu2 ). decrease v2 gradually. the v2 voltage when co = ?h? is overcharge release voltage 2(v cd2 ). further decrease v2. the v2 voltage when do= ?l? is overdischarge voltage 2(v dd2 ). increase v2 gradually. the v2 voltage when do = ?h? is overdischarge release voltage 2 (v du2 ). set s1 = on, and v1= v2= 3.6 v and v3 = 0 v under normal condition. increase v2 from 3.6v gradually. the v2 voltage when co = ?l? is auxiliary overcharge detection voltage 2 (v cuaux2 ). (3) test condition 3, test circuit 1 set s1=off, v1 =v2 =3.6 v, and v3 = 0v under normal condition. increase v3 from 0v gradually. the v3 voltage when do= ?l? is overcurrent detection voltage 1 (v iov1 ). set s1 =on, v1=v2= 3.6v, v3=0 under normal condition. increase v3 from 0 v gradually.v3 voltage when do= ?l? is overcurrent detection voltage 2 (v iov2 ). (4) test condition 4, test circuit 2 set s1 = on, v1 = v2 =3.6v, and v3 =0 v under normal condition and measure current consumption. current consumption i1 is the normal condition current consumption (i ope ). set s1 =off, v1 =v2 =1.5v under overdischarge condition and measure current consumption. current c onsumption i1 is the power-down current consumption (i pdn ). (5) test condition 5, test circuit 2 set s1 =on, v1=v2 = 1.5 v, and v3 =0 v under overdischarge condition. (v1+ v2)/i2 is the internal resistance between vcc and vm (rvcm). set s1= on, v1=v2=3.5v, and v3 = 1.0 v under overcurrent condition. v3 / i2 is the internal resistance between vss and vm (rvsm). (6) test condition 6, test circuit 3 set s1=on, s2=off,v1=v2=3.6v, and v3 =0 v under normal condition. increase v4 from 0v gradually. the v4 voltage when i1=10 a is do voltage ?h? (v doh ). set s1=off, s2=on,v1=v2=3.6v, and v3=0.5 v under overcurrent condition. increase v5 from 0v gradually. the v5 voltage when i2=10 a is do voltage ?l? (v dol ). (7) test condition 7, test circuit 4 set s1 = on, s2=off, v1=v2 =3.6v, and v3 =0 v under normal condition. increase v4 from 0v gradually. the v4 voltage when i1=10 a is the co ?h? voltage (v coh ). set s1=off, s2=on,v1=4.4, v2 =3.6v, and v3 =0 v under overcharge condition. increase v4 from 0v gradually. the v5 voltage when i1=10 a is co voltage ?l? (v col ). (8) test condition 8, test circuit 5 set v1=v2=3.6v and v3=0v under normal condition. increase v1 from (v cu1 -0.2v) to (v cu1 +0.2v) immediately (within 10 s). the time after v1 becomes (v cu1 +0.2v) until co goes ?l? is the overcharge detection delay time 1 (t cu1 ). set v1=v2=3.5v and v3=0v under normal condition. decrease v1 from (v dd1 +0.2v) to (v dd1 -0.2v) immediately (within 10 s). the time after v1 becomes (v dd1 -0.2v) until do goes ?l? is the overcharge detection delay time 1 (t dd1 ). (9) test condition 9, test circuit 5 set v1=v2=3.6v and v3=0v under normal condition. increase v2 from (v cu2 -0.2v) to (v cu2 +0.2v) immediately (within 10 s). the time after v2 becomes (v cu2 +0.2v) until co goes ?l? is the overcharge detection delay time 2 (t cu2 ). set v1=v2=3.6v and v3=0v under normal condition. decrease v2 from (v dd2 +0.2v) to (v dd2 -0.2v) immediately (within 10 s). the time after v2 becomes (v dd2 -0.2v) until do goes ?l? is the overcharge detection delay time 2 (t dd2 ). (10) test condition 10, test circuit 5 set v1=v2=3.6v and v3=0v under normal condition. increase v3 from 0v to 0.5v immediately(within 10 s). the time after v3 becomes 0.5v until do goes ?l? is the overcurrent detection delay time 1(t i0v1 ). (11) test condition 11, test circuit 6 set v1=v2=0v and v3=2v,and decrease v3 gradually. the v3 voltage when co=?l?(v cc -0.3v or lower) is the 0v charge starting voltage (v 0cha ).
eup9232 ds9232 ver1.1 feb. 2007 11 (12) test condition 12, test circuit 6 set v1=0v and v2=3.6v and v3=12v, and increase v1 gradually. the v1 voltage when co=?h? (v vm +0.3v or higher) is the 0v charge inhibiting voltage 1(v 0inh1 ). (13) test condition 13, test circuit 6 set v1=3.6v and v2=0v and v3=12v, and increase v2 gradually. the v2 voltage when co=?h? (v vm +0.3v or higher) is the 0v charge inhibiting voltage 2(v 0inh2 ). (14) test condition 14, test circuit 1 set s1=on, v1=v2=3.6v and v3=0v under normal condition. increase v3 from 0v to 1.5v immediately ( within 10 us ). the time after do goes ?l? is the overcurrent detection delay time 2 ( t iov2 ).
eup9232 ds9232 ver1.1 feb. 2007 12 test circuit test circuit 1 test t circuit 2 test circuit 3 test circuit 4 test circuit 5 test circuit 6
eup9232 ds9232 ver1.1 feb. 2007 13 typical characteristics 1. detection voltage temperature characteristics -40-20 0 20406080 4.22 4.24 4.26 4.28 4.30 4.32 4.34 overcharge detection voltage1 vs. temperature vcu1 (v) ta( c) -40-20 0 20406080 4.22 4.24 4.26 4.28 4.30 4.32 4.34 overcharge detection voltage2 vs. temperature vcu2 (v) ta( c) figure3. figure4. -40-20 0 20406080 3.84 3.86 3.88 3.90 3.92 3.94 3.96 overcharge release voltage1 vs. temperature vcd1 (v) ta( c) -40-20 0 20406080 3.84 3.86 3.88 3.90 3.92 3.94 3.96 overcharge release voltage2 vs. temperature vcd2 (v) ta( c) figure5. figure6. -40-20 0 20406080 5.29 5.31 5.33 5.35 5.37 5.39 5.41 auxiliary overcharge detection voltage1 vs. temperature vcuaux1 (v) ta( c) -40-20 0 20406080 5.29 5.31 5.33 5.35 5.37 5.39 5.41 auxiliary overcharge detection voltage2 vs.temperature vcuaux2 (v) ta( c) figure7. figure8.
eup9232 ds9232 ver1.1 feb. 2007 14 -40-20 0 20406080 1.94 1.96 1.98 2.00 2.02 2.04 2.06 overdischarge detection voltage1 vs. temperature vdd1 (v) ta( c) -40-20 0 20406080 1.94 1.96 1.98 2.00 2.02 2.04 2.06 overdischarge detection voltage2 vs. temperature vdd2 (v) ta( c) figure 9. figure10. -40-20 0 20406080 2.44 2.46 2.48 2.50 2.52 2.54 2.56 overdischarge release voltage1 vs. temperature vdu1 (v) ta( c) -40-20 0 20406080 2.44 2.46 2.48 2.50 2.52 2.54 2.56 overdischarge release voltage2 vs. temperature vdu2 (v) ta( c) figure11. figure12. -40-20 0 20406080 0.050 0.065 0.080 0.095 0.110 0.125 0.140 overcurrent detection voltage1 vs. temperature viov1 (v) ta( c) -40-20 0 20406080 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 overcurrent detection voltage2 vs. temperature viov2 (v) ta( c) figure13. figure14.
eup9232 ds9232 ver1.1 feb. 2007 15 2. current consumption temperature characteristics -40-20 0 20406080 0.0 2.5 5.0 7.5 10.0 current consumption vs. temperature in normal mode iope ( a) ta( c) -40-20 0 20406080 0 20 40 60 80 100 120 current consumption vs. temperature in power-down mode ipdn (na) ta( c) figure15. figure16. 3. delay time temperature characteristics -40-20 0 20406080 0.4 0.6 0.8 1.0 1.2 1.4 1.6 overcharge detection time vs. tempature tcu (s) ta( c) -40-20 0 20406080 40 60 80 100 120 140 160 overdischarge detection time vs. tempature tdd (ms) ta( c) figure17. figure18. -40-20 0 20406080 4 6 8 10 12 14 16 overcurrent detection1 time vs. tempature tiov1 (ms) ta( c) figure19.
eup9232 ds9232 ver1.1 feb. 2007 16 description of operation normal condition *1 this ic monitors the volt ages of the two serially connected batteries and t he discharge current to control charging and discharging. when the voltages of two batteries are in the range from the overdischarge detection voltage (v dd1 , 2 ) to the overcharge detection voltage (v cu1 , 2 ), and the current flowing through the batteries becomes equal or lower than a specified value (the vm pin voltage is equal or lower than overcurrent detection voltage 1) , t he charging and discharging fets are turned on. in th is condition, charging and discharging can be carried out freely. this condition is called normal condition. overcurrent condition when the discharging current becomes equal to or higher than a specified val ue (the vm pin voltage is equal to or higher than the overcurrent detection voltage) during discharging under normal condition and it continues for the ov ercurrent detection delay time (t iov ) or longer, the discharging fet is turned off to stop discharging. this condition is called overcurrent condition. when the discharging fet is off and a load is connected, the vm pin voltage equals the v cc potential. the overcurrent condition returns to the normal condition when the load is released and the impedance between the eb ? - and eb ? + pins (refer to the figure 2 for a connection example) is 400 k [ or higher. when the load is rel eased, the vm pin, which is shorted to the vss pin with the rvsm resistor, goes back to the v ss potential. the ic detects that the vm pin potential returns to overcurrent detection voltage 1 (v iov1 ) or lower and returns to the normal condition. overcharge condition following two cases are detected as overcharge conditions: (1) if one of the battery voltages becomes higher than the overcharge detection voltage (v cu1,2 ) during charging under normal condition and it continues for the overch arge detection delay time (t cu1,2 ) or longer, the charging fet turns off to stop charging. (2) if one of the battery voltages becomes higher than the auxiliary over charge detection voltage (v cuaux1, 2 ) the charging fet turns off immediately to stop charging. the auxiliary overchar ge detection voltages (v cuaux1,2 ) are correlated with the overcharge detection voltages (v cu1,2 ) and are defined by following equation: v cuaux1,2 [v]=1.25 v cu1,2 the overcharge condition is release in two cases: (1)the battery voltage which exceeded the overcharge detection voltage (v cu1,2 ) falls below the overcharge release voltage (v cd1, 2 ), the charging fet turns on and the normal condition returns. (2)if the battery voltage which exceeded the overcharge detection voltage (v cu1, 2 ) is equal or higher than the overcharge release voltage (v cd1 , 2 ), but the charger is removed, a load is placed, and discharging star ts, the charging fet turns on and the normal condition returns. the release mechanism is as follows: the discharge current flows through an internal parasitic diode of the charging fet immediat ely after a load is installed and discharging starts, and the vm pin voltage increases by about 0.6 v from the vss pin voltage momentarily. the ic detects this voltage (overcurrent detection volt age 1 or higher), releases the overcharge condition and returns to the normal condition. overdischarge condition if any one of the battery voltages falls below the overdischarge detection voltage (v dd1,2 ) during discharging under normal c ondition and it continues for the overdischarge detection delay time (t dd1, 2 ) or longer, the discharging fet turns off and discharging stops. this condition is called the overdischarge condition. when the discharging fet turns off, the vm pin voltage becomes equal to the vcc voltage and the ic?s cu rrent consumption falls below the power-down cu rrent consumption (i pdn ). this condition is called the power-down condition. the vm and vcc pins are shorted by the r vcm resistor under the overdischarge and power-down conditions. the power-down condition is canceled when the charger is connected an d the voltage between vm and vcc is overcurrent detection voltage 2 or higher. when all the battery voltages becomes equal to or higher than the overdischarge release voltage (v du1,2 ) in this condition, the overdischarge condition changes to t he normal condition.
eup9232 ds9232 ver1.1 feb. 2007 17 delay circuits the overcharge detection delay time (t cu1,2 ), the overdischarge detection delay time (t dd1,2 ), and the overcurrent detection delay time1 (t i0v1 ) change with an external capacitor (c3). since one capacitor determine each delay time, delay times are correlated by the following ratio: overcharge delay time: overdischarge delay time : overcurrent delay time =100:10:1 the delay times are calculated by the following equations : (ta=-40 to +85 j ) min. typ. max. overcharge detection delay time t cu [s] = delay factor (2.5, 4.545, 9.364) c3 [ f] overdischarge detection delay time t dd [s] = delay factor (0.3045, 0.4545, 0.6409) f] overcurrent detection delay time t iov1 [s] = delay factor (0.02864, 0.04545, 0.06682) f] remark the delay time for overcurrent detection 2 is fixed by an internal circuit. the delay time cannot be changed via an external capacitor. 0v battery charging function *2 this function is used to recharge both of two serially-connected batteri es after they self- discharge to 0v. when the 0v charging start voltage (v 0cha ) or higher is applied to between vm and vcc by connecting the charger, the charging fet gate is fixed to v cc potential. when the voltage between the gate and the source of the charging fet becomes equal to or higher than the turn-on voltage by the charger voltage, the charging fet turns on to start charging. at this time, the discharging fet turns off and the charging current flows through the internal parasitic diode in the discharging fet. if all the battery voltages become equal to or higher than the overdischarge release voltage (v du1, 2 ), the normal condition returns. 0v battery charge inhibiting function *2 this function is used for inhibiting charging when either of the c onnected batteries goes 0v due to its self-discharge. when the vo ltage of either of the connected batteries goes bel ow 0 v charge inhibit voltage 1 and 2 (v oinh1,2 ), the charging fet gate is fixed to "eb- ? " to inhibit charging. charging is possible only when the vo ltage of both connected batteries goes 0v c harge inhibit voltage 1 and 2 (v oinh1, 2 ) or more. note that charging may be possible when the total voltage of both connected batteries is less than the minimum value (v dsopmin ) of the operating voltage between vcc and vss even if the voltage of ei ther of the connected batteries is 0 v charge inhibit voltage 1 and 2 (v 0inh1, 2 ) or less. charging is prohibited when the total voltage of both connected batteries reaches the minimum value (v dsopmin ) of the operating voltage between vcc and vss. *1. when initially connecting batteries, the ic may fail to enter the normal condition (d ischarging ready state).if so, once set the vm pin to vss voltage (short pins vm and vss or connect a charger). *2. some lithium ion batteries are not recommended to be recharged after having been completely discharged. please contact the battery manufacturer when you decide to select a 0v battery charging function.
eup9232 ds9232 ver1.1 feb. 2007 18 timing charts 1. overcharge detection figure18. *1. <1> normal mode. <2> over charge mode.<3> over discharge mode.<4> over current mode. remark the charger is assumed to charge with a constant current. 2. overdischarge detection figure19. *1. <1> normal mode. <2> over charge mode.<3> over discharge mode.<4> over current mode. remark the charger is assumed to charge with a constant current.
eup9232 ds9232 ver1.1 feb. 2007 19 3. overcurrent detection figure20. *1. <1> normal mode. <2> over charge mode.<3> over discharge mode.<4> over current mode. remark the charger is assumed to charge with a constant current.
eup9232 ds9232 ver1.1 feb. 2007 20 package information tssop-8 millimeters inches symbols min. max. min. max. a - 1.20 - 0.048 a1 0.00 0.15 0.000 0.006 b 0.19 0.30 0.007 0.012 d 3.00 0.118 e 6.20 6.60 0.244 0.260 e1 4.40 0.173 e 0.65 0.026 l 0.45 0.75 0.018 0.030

▲Up To Search▲

Price & Availability of EUP9232ACQIR1

	To Download EUP9232ACQIR1 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .