APPLE 1010
`
`CONTENTS
`
`1 1 2 3 3 3
`
`° 8 9
`
`10
`
`10
`
`11
`
`11
`
`12
`
`13
`
`FeatureSer rr eee ee ew eo
`
`we ww ew
`
`ew ww ew
`
`Selection Guide:-++++rtrerees
`
`Block Diagram:--+++++e rte reese
`
`Pin Assignment: --+++++c+ reese
`
`Functions of Pins::+r+++e+ee-.
`
`Absolute Maximum Ratings:°:::
`
`Electrical Characteristics::
`
`Measurement CircuitS:::+rr:-:-.
`
`Operat LON* sree eee eee een eee ae
`
`Operating Timing Chart--:c:::
`
`Battery Protection IC°:-:>:-
`
`Handing Precautions: ::--r:r>::
`
`Dimentions:++°+++c+++err seers
`
`MarkingS-+++++ srt tee tte eee
`
`Taping: +++ cer tee tt et eee
`
`CharacteristicS:-+*t+trerree-s
`
`1
`
`APPLE 1010
`
`

`

`
`
`
`S-8491 Series
`|
`BATTERY PROTECTION IC
`
`
`The S-8491 is a series of lithium-ion rechargeable battery protection
`ICs incorporating high-accuracy voltage detectors and a delaycircuit.
`This series is suitable for protecting a single-cell pack.
`
`M Features
`
`(1) Built-in high-accuracy voltage detection circuits:
`
`@ Excess charge detection voltage
`
`Voy
`
`..
`
`4.35+0.05 V to 4.2540.05 V/0.05 V step
`
`Vop ..... 4.15 40.13 V to 3.95 + 0.13 V/0.05 V step
`@ Excess chargerelease voltage
`* The difference between the excess charge detection voltage and the excess charge release voltage can
`be selected in the range of 0.2 V to 0.3 V.
`
`‘
`
`@ Excess discharge detection voltageVpp ..... 2.30 £0.10 V
`@ Excess discharge release voltage Vpvy..... 3.00 + 0.15 V to 2.40+0.15 V/0.10 V step
`© Excess current detection voltage Viov..... 0.20 + 0.06 V
`
`(2) Built-in delay circuit
`The excess charge, excess discharge or excess current is detected with delay.
`(3) Ultra-low current consumption
`
`Operation:
`Power down:
`
`15.0 vA max. (+25 °C)
`0.48 wzA max. (+25 °C)
`
`(4) SOT - 89 - 5 package
`
`M Selection Guide
`
`S - 8491AUP - DKA - T2
`
`| TL Direction of the !C [Refer to the tape specifications (T2)]
`
`Abbreviation
`
`SOT- 89 - 5 package
`
`Table 1
`
`detection voltage
`
`voltage
`
`release voltage
`
`MM
`
`
`
`
`
`
`
`
`
`
`
`
`
`Characteristics not specified in Table 1 apply commonly to the S-8491AUP/BUP/CUP/DUP.,
`
`2
`
`APPLE 1610
`
`2
`
`APPLE 1010
`
`

`

`BATTERY PROTECTION IC
`S-8491 Series
`
`@=Block Diagram
`
`ssaoxq
`
`
`
`-BARS1BMOd-
`
`PIND4ID
`
`Aejaq
`
`WNIAID
`
`
`
`aBseyrsiq$sa2x3
`
`
`
`pNDIDUOIIA}ag
`
`Aelaq
`
`HN
`
`yuasny
`
`PNDUONDaIaq
`
`Aejaq
`
`HNDUID
`
`
`
`abbeysssaoxq
`
`
`
`PNDIDUONPaIaq
`
`Figure 1
`
`APPLE 1010
`
`3
`
`APPLE 1010
`
`
`

`

`BATTERY PROTECTION IC
`S-8491 Series
`
`HH Pin Assignment
`
`SOT -89-5
`Top view
`
`5
`
`4
`
`
`
`1. CO
`2. VCC
`3. DO
`4. VSS
`5. CM
`
`Figure 2
`
`Mi Functions of Pins
`
`Input
`* Voc (Pin No. 2) ....
`Power supply pin at the positive side of the IC. :
`
`Input
`* Vgg (Pin No. 4) ....
`Power supply pin at the negative side of the IC.
`
`(CMOS)
`..... Output
`DO (Pin No. 3)
`It turns OFF the gate during excess charge or
`Gate connection pin for the discharge control Nch-FET.
`excess Current, whereas it turns ON the gate in the excess charge or the normal region.
`
`.... Output (Pch open-drain)
`CO (Pin No. 1)
`Gate connection pin for the charge control Nch-FET. This pin turns ON the gate in the excess current region,
`whereasit turns ON the gate in the normal or excess discharge region.
`
`Input
`....
`CM (Pin No. 5)
`Voltage detection pin (between CM and Vgs). Detects the discharge current value of the battery due to a drop
`in the voltage of the FET.
`
`M Absolute Maximum Ratings
`
`Table 2
`
`Ta=25°C
`
`
`
`
`Inputvoltage between Vcc=Vss Vss -0.3 to +18 Poy|Input voltage between Vcc- CM
`
`
`
`Vv
`Vcc + 0.3 to-18
`Vcop
`Input voltage between Vcc- CO
`
`Powerdissipation|b|500—+|~_—mw_|
`
`
`
`
`Vem
`
`Vcc + 0.3 to- 18
`
`Vv
`
`Storage temperature range
`
`-40 to +125
`
`A
`
`APPLE 1010
`
`4
`
`APPLE 1010
`
`

`

`BATTERY PROTECTION IC
`S-8491 Series
`
`EH Electrical Characteristics
`
`Table 3
`
`Ta=25°C
`
`Excess charge detection
`voltage
`
`voltage
`Temperature coefficient
`
`_
`
`Vv
`
`
`
`
`
`
`AuP] 387|4.00|413_|
` Excess charge release
`
`Vep BuP| 3.97[|410|423|[Measurement 1
`
`
`voltage
`
`aewomens[a[aw|2
`Vp
`205] 300|315_|
`Voy |Measurement1 SUP]285|3.00|3.15__|
`
`Excess discharge release
`Tcur|255|270|285__
`voltage
`
`Pour[225|240|255_|
`
`
`
`
`
`
`
`
`p=[=
`eeecr[ww[fe||
`
`
`eee,[we|[f+
`
` consumption|love_|
`
`
`onsmpion"|ew[Measremerts|—~|02s|oe
`
`
`
`Delay time of excess
`
`M
`
`nt2
`
`Delay time of excess
`:
`
`Measurement 2
`
`Delay time of excess
`Torr|Measurement 2
`current detection
`
`consumption
`
`
`
`pA
`
`
`
`Note 1: The Vcc pin-based voltage supplied to the CM pin.
`
`4
`
`5
`
`APPLE 1010
`
`5
`
`APPLE 1010
`
`

`

`BATTERY PROTECTION IC
`S-8491 Series
`
`Table 4
`
`Conditions
`
`Ta= -20to 60°C
`
`Measurement2
`
`Measurement 2
`
`3.50
`.
`
`Ta= -20 to +60 Measurement 2
`
`
`
`
`
`
`
`T
`
`COE
`T
`
`cu
`
`T
`
`T.
`
`DD
`°
`
`FF
`
`Temperature coefficient
`of detection voltage
`Delay time of excess
`charge detection
`Delay time of excess °
`discharge detection
`Delay time of excess
`current detection
`20
`Measurement3
`Normal operating current
`consumption
`
`HA
`0.58
`Measurement 3
`Power down current
`.
`consumption
`
`DOH’ voltage Vow |Measwrement#|vec-o5|——|——_
`
`
`
`DO’ L’ voltage » [Measurement|—|—|vssror] ¥
`<Q°
`
`
`CO’H' voltage [Measurement[vec-0.5|——|——Veouwn
`
`
`
`HM Measurement Circuits
`
`(1) Measurement1
`
`To measure excess charge detection voltage Voy, excess charge release voltage Vcp, excess discharge
`detection voltage Vpp, and excess discharge release voltage Vpu, follow these steps:
`
`@ In the normal region with Voc =Vcp, Vom=0 V, excess charge detection voltage Vcuy is the voltage of
`Vec when CO goeslow after gradually increasing Vcc.
`
`@ In the excess charge region with Vcc =Vcut+0.1 V. Vom=0 V, excess charge release voltage Vcp is
`the voltage of Vcc when CO goeshigh after gradually increasing Vcc.
`
`@ Inthe normal region with Vcc = Vcp, Vom=0 V, excess discharge detection voltage Vppis the voltage of
`Vcc when DO goeslow after gradually decreasing Vcc.
`
`@®
`
`In the excess discharge region with Vcc =2.0 V, Vom=0 V, excess discharge release voltage Vpy is
`the voltage of Vcc when DO goeshigh after gradually increasing Vcc.
`
`Note: Rise and fall speeds of Vcc are each specified at 150 V/sec orless.
`
`6
`
`APPLE 1010
`
`6
`
`APPLE 1010
`
`

`

`BATTERY PROTECTION IC
`S-8491 Series
`
`(2) Measurement 2
`
`co
`
`To measure excess charge detection time Tou, excess discharge detection time Tpp, and excess current
`detection time Torr, follow these steps:
`
`@ In the normal region with Vcc = Vcu-0.1 V, Vom=0 V, excess charge detection time Tcu is the time
`from when Vcc is Vcu + 0.1 V to when CO goes low.
`
`@ In the normal region with Voc = Vpp + 0.1 V, Vom=0 V, excess discharge detection time Tpp is the time
`from when Vcc = Vpp-0.1 V to when DO goeslow.
`
`@ In the normal region with Vcc = 3.5 V, Vom=0 V, excess current detection time Torr is the time from
`when Venis 3.5 V to when DO goeslow.
`
`(3) Measurement 3
`
`co
`$2
`
`@ In the normal region with Voc = 3.5 V, Vom= 0 V, normal operating current consumption lopeis 11.
`
`@ In the excess discharge region with Voc =2.0 V, Vcom=2.0 V, current consumption Ippn in power-
`down modeis I1.
`
`(4) Measurement 4
`
`v2
`
`To measures DO ‘H’ voltage Vpo(H), DO ‘L’ voltage Vpo(L), follow these steps:
`
`@®
`
`@®
`
`In the normal region with Vcc =3.5 V, Vom= OV, S1=open, S2=close, V2=0 V, DO ‘H’ voltage Vpo(H)
`is the voltage of V2 when [2 is 10 wA after gradually increasing V2.
`
`In the excess current region with Vcc =3.5 V, Vom=3.5 V, S1=close, S2=open, V1=0 V, DO ‘L’
`voltage Vpo(L) is the voltag of V1 when 11=10 JA after gradually increasing V1.
`
`6
`
`7
`
`APPLE 1010
`
`7
`
`APPLE 1010
`
`

`

`BATTERY PROTECTION IC
`S-8491 Series
`
`To measure CO ‘H’ voltage Vco(H), follow the step:
`
`@ In the normal region with Voc =3.5 V, Vom=0 V, V1=0 V, CO ‘H’ voltage Vcoo(H) is the voltage of V1
`when {1=10 ZA after gradually increasing V1.
`
`(5) Measurement 5
`equivalent
`
`(6) Measurement 6
`
`25K2046 or
`
`To measure excess current detection voltage Viovy,follow the step:
`@ In the normal region with Voc = 3.5 V, V1=0 V, S1=close S2=close, excess current detection voltage
`Viov is the voltage of the CM pin when DO goeslow after opening S1 and after gradually increasing V1.
`
`8
`
`APPLE 1010
`
`8
`
`APPLE 1010
`
`

`

`BATTERY PROTECTION IC
`S-8491 Series
`
`Hi Operation
`Normal!
`
`This IC monitors both the voltage and the current of a battery connected between Vcc and Vss, and controls
`charge and discharge. Whenthe voltage of the battery is over Vpp, and below Vcu, and the voltage of the CM
`pin is bewlow Viov,this IC turns ON the charge and discharge FETs.This is called the normal region.
`
`Excess Charge
`
`In the normal region, when the voltage of the battery being charged exceeds Vcu, this IC stops charge by
`turning OFF the charge FET. This is called the_excess charge region. When the battery voltage goes below
`Vep, the state returns to the normal.
`
`Excess Discharge
`
`In the normal region, when the voltage of the battery being discharged goes below Vpp, this !C stops discharge
`by turning OFF the discharge FET. Current consumption of the IC turns to Ippn at this time. This is called the
`excess discharge region.
`When a chargeris connected in the excess discharge region and the battery voltage exceeds Vpu, the state
`returns to the normal.
`
`Excess Current
`
`In the normal region, when the voltage of the CM pin exceeds Vioy during discharge, this IC stops discharge by
`turning OFF the discharge FET. This is called excess current.
`
`The state is returned to the normal by being more than 500Mnoresistance between EB+ and EB-, for example,
`by removing load.
`
`Delay Circuit
`
`This IC is provided with a comparator for monitoring excess charge detection, excess discharge detection or
`excess current. Also, it has delay time from when the comparator detects the voltage to when the output voltage
`is inverted at DO and CO pins.
`Delay occurs only during the following operations.
`(1) The “comparator” detects the excess charge detection voltage — Delay time — CO pin changesto the
`Hi-Z level.
`
`(2) The "comparator” detects the excess discharge detection voltage — Delay time — DO pin changes to
`the Vsg_ level.
`
`(3) The *comparator” detects the excess current detection voltage > Delay time + DO pin changesto the
`Vsg level.
`
`@Normal region
`@eExcess discharge region
`@Excess charge region
`
`
`
`Discharge
`Charge
`ob wee ee ee eee a eee ee hee
`
`
`
`Vee
`$-8491 Series
`
`
`
`
`
`EB+
`Fon
`
`6
`EB -
`
`©
`
`:@:
`i
`
`O
`
`:@:
`7
`
`oO
`
`Figure 3
`
`Discharge
`FET
`
`Charge
`FET
`
`Figure 4
`
`8
`
`9
`
`APPLE 1010
`
`9
`
`APPLE 1010
`
`

`

`BATTERY PROTECTION IC
`S-8491 Series
`
`
`
`[end«dYSS
`
`
`
`
`
`
`
`
`
`Normal
`
`Excess charge
`
`Normal
`
`,
`Excess discharge
`
`Charge
`— Excess charge
`
`Discharge
`— Normal
`Discharge
`2
`Charge
`>
`
`Normal
`
`Excess discharge
`
`Excess charge—>Excess current occurs
`
`Normal regionExcess current occurs
`Excess dischargeLoad short
`
`HM Operating Timing Charts
`
`
`
`
`
`
`Table 5
`
`4
`
`Delay
`—> Hi-z
`
`H
`
`.
`Hi-z —>
`
`4H
`
`H
`
`H
`
`H
`
`9
`elay
`L
`=?
`H
`L > H
`
`H
`
`H
`
`Delay L
`
`Delay L
`
`@Normal region
`@eExcess discharge region
`@eExcess charge region
`@Excess current region
`®Connecting a charger
`®Noload
`
`@
`
`®
`
`®
`
`@
`
`@
`
`®
`
`®
`
`®©® ®Mm—-+tt—_aitH YH)tHOOOF
`
`cM
`
`DO
`
`co
`
` Hi-2
`
`K Rises up to Vec potential.
`
`Figure 5
`
`10
`
`APPLE 1610
`
`10
`
`APPLE 1010
`
`

`

`BATTERY PROTECTION IC
`S-8491 Series
`
`Battery Protection IC Connection Diagram
`
` Battery Protection IC
`$-8491 Series
`CM
`
` DO
`
`Figure 6
`
`Install an R1* less than 1 KQ.
`
`+ The R2 is a pull-down resistor which turns OFF FET2. The R2 also protects the IC when the charger is connected
`reversely. Use a resistor from 100 KO. or more to 1 MQ orless.
`
`* The R3 protects the IC when the charger is connected reversely. Use a resistor from 1 KQ or more to 10 KQ orless.
`
`install a C1* more than 0.47yF.
`
`*
`
`if they are needed for ESD ( Electric Static Discharge ) protection.
`
`* The connection diagram explain typical applications of the products, and do not guarantee any
`massproduction design.
`
`Handling Precautions
`
`In the excess discharge region, the voltage of the CM pin rises to the power supply voltage Vcc. This forces
`‘the built-in comparator to stop. Unless the CM pin is down to the Vcc level or less by connecting a charger,
`the excess discharge state can beretained.
`
`Wheninitially connecting the battery to the IC, the state may go to the excess discharge state depending
`upon the characteristics of the capacitor or resistor attached to the CM pin. To return to the normal region,
`set the CM pin to the Vsg level or less (connect a charger).
`
`Oscillation may occur depending upon the value of the capacitor or resistor attached to the CM or DO pin.
`Select one from the following parts:
`FETgate capacity: A capacitor of 5000 pF or less
`Wiring resistance on the PCB between DO pin and FET1 gate: A resistor of 5 0 or less
`(Refer to Figure 4, Battery Protection iC Diagram )
`
`impedance to stop
`the battery voltage drops due to its internal
`- When the excess current generates,
`dischrage. If the voltage goes below the operating voltage of the IC (2.0 V), the excess discharge state may
`be retained even when the load is released. To return to the normal region, set the CM pin to the Vss or less
`(connect a charger).
`
`10
`
`11
`
`APPLE 1010
`
`11
`
`APPLE 1010
`
`

`

`BATTERY PROTECTION IC
`S-8491 Series
`
`HM Dimensions
`
`0.65 min.
`
`2.5+0.2
`
`0.65 min.
`
`0.440.05
`
`
`
`(Unit: mm)
`
`Figure 7
`
`M Markings
`
`(6)
`
`(1) to (3):
`(4)
`(5)
`
`Figure 8
`
`Product name (abbreviation)
`Year of assembly (last digit)
`Monthof assembly
`(1 to 9, X, Y, and Z)
`Weekof assembly (1 to 3)
`
`12
`
`APPLE 1110
`
`12
`
`APPLE 1010
`
`

`

`BATTERY PROTECTION IC
`S-8491 Series
`
`H Taping
`
`1. Tape Specifications
`
`wt 0.3 40.05
`
`1.80.1
`
` Unit: mm
`
`—— FeedDirection
`
`Figure 9
`
`2. Reel Specifications
`A reel holds 1000 ICs.
`
`Figure 10
`
`“|
`
`14+ 05
`15
`
`Unit: mm
`
`12
`
`13
`
`-
`
`APPLE 1010
`
`cn
`
`m-w
`
`no
`s+1wwo
`
`13
`
`APPLE 1010
`
`

`

`MH Characteristics
`
`1. Temperature Characteristics of the Voltage Detector (Example: S8491AUP-DKA-T2)
`
`BATTERY PROTECTION IC
`$-8491 Series
`
`Excess charge detection voltage vs temperature
`
`Excess charge release voltage vs temperature
`
`vcutv)
`
`VCOIV)
`
`Ta [°C}
`
`Ta [°C]
`
`Excess current detection voltage vs temperature
`
`31
`
`Excess discharge release voltage vs temperature
`
`VDO[V]
`
`VDUIV)
`
`41
`
`‘ -25
`
`Ta [°C]
`
`Ta [°C}
`
`Excess current detection voltage vs temperature VCC = 3.5[V]
`
`0
`
`25
`Ta [°C]
`
`50
`
`75
`
`2. Temperature characteristics of current consumption (Example: S8491AUP-DKA-T2)
`
`IOPE[pzA]
`
`Power down current consumption vs temperature
`
`Normal opeating current consumptionvs
`temperature
`VCC = 3.5[V]
`
`(PDN[pA] Ta (°C)
`
`14
`
`APPLE 1610
`
`14
`
`APPLE 1010
`
`

`

`BATTERY PROTECTION iC
`S-8491 Series
`
`3. Temperature Characteristics of Delay Time (Example: S8491AUP-DKA-T2)
`
`TOFF[mS)
`
`5 4
`
`3
`
`2
`
`1
`
`0
`
`5 4 3
`
`TCU[mS}
`
` Excess charge detection voitage vs temperature
`
`Excess discharge detection voltage vs temperature
`
`TOD{ms]
`
`4
`
`3
`
`2
`
`1
`
`0
`
`14
`
`15
`
`APPLE 1010
`
`15
`
`APPLE 1010
`
`