A7BW75AA [ANASEM]
Single-cell Li-ion / Li-polymer Single-cell Li-ion / Li-polymer; 单节锂离子/锂聚合物单节锂离子/锂聚合物
| 型号： | A7BW75AA |
| 厂家： | 
AnaSem Hong Kong Limited |
| 描述： | Single-cell Li-ion / Li-polymer Single-cell Li-ion / Li-polymer |
| 文件： | 总23页 (文件大小：223K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AnaSem
Analog Semiconductor IC
A7B Series
Single-cell Li-ion / Li-polymer
Battery Protection IC
Rev. E09-06
AnaSem Inc.
.......... Future of the analog world
Rev. E09-06
Products Data Sheet
AnaSem
Analog Semiconductor IC
Single-cell Li-ion / Li-polymer Battery Protection IC
A7B Series
GENERAL DESCRIPTIONS
HALOGEN
The A7B series are protection ICs for rechargeable Li-ion / Li-polymer battery by
high withstand voltage CMOS process. These series protect single-cell Li-ion /
Li-polymer battery from over-charge, over-discharge, charge over-current and
discharge over-current.
RoHS
COMPLIANCE
FEATURES
z
High accuracy detection voltage ······
±25mV (Topr = 25°C)
Over-charge detection
±30mV (Topr = –5°C ~ +55°C)
±25mV
±2.5%
±30mV
±20mV
Over-charge hysteresis
Over-discharge detection
Charge over-current detection
Discharge over-current detection
z
z
Selectable detection voltage ·············
4.0V ~ 4.5V (5mV step)
0.0V ~ 0.4V (50mV step)
2.0V ~ 3.0V (5mV step)
–0.25V ~ –0.05V (5mV step)
0.05V ~ 0.40V (5mV step)
Over-charge detection
Over-charge hysteresis
Over-discharge detection
Charge over-current detection
Discharge over-current detection
Delay time (internal adjustment) ······
Typ. 1.0s
Over-charge detection delay time
Over-discharge detection delay time
Charge over-current detection delay time
Discharge over-current detection delay time
Load short-circuiting detection delay time
Release delay time 1
Typ. 31.0ms
Typ. 8.0ms
Typ. 8.0ms
Typ. 370μs
Typ. 2.0ms
Typ. 16.0ms
Release delay time 2
z
z
High withstand voltage ····················· Absolute maximum rating
28V (VM & CO terminals)
Typ. 3.0μA
Max. 0.1μA
Low current consumption ·················
Operation
Over-discharge condition
z
Wide operating temperature range ··············································································· –40°C ~ +85°C
Selectable 0V battery charging function or 0V battery charge inhibiting function
z
AnaSem Inc.
1
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
Rev. E09-06
A7B Series
PRODUCTS NUMBERING GUIDE
A7B
0V battery charge function
A : Acceptable
B : Unacceptable
Detection delay time
Serial code from A to Z
A : Standard value
B to Z : Depend upon selected value by customer
Detection voltage
Delivery form
Serial code from 00 to 99
* Depend upon selected value by customer
C : Chip in tray
W : 5 inches wafer
E : SOT-26
N : SON-5
STANDARD MODELS LINE-UPS
Model No.
A7BE01AA
A7BE02AA
A7BE03AA
A7BE04AA
Selectable items
Over-charge detection voltage 1)
4.275V
0.20V
4.280V
0.20V
4.290V
0.20V
4.325V
0.25V
Over-charge hysteresis voltage 2)
Over-discharge detection voltage 3)
Charge over-current detection voltage 4)
Discharge over-current detection voltage 5)
Over-charge detection delay time 6)
Over-discharge detection delay time 6)
Charge over-current detection delay time 6)
0V battery charge function
2.300V
–0.100V
0.100V
1.0s
2.300V
–0.100V
0.100V
1.0s
2.300V
–0.100V
0.100V
1.0s
2.500V
–0.150V
0.150V
1.0s
31.0ms
8.0ms
31.0ms
8.0ms
31.0ms
8.0ms
31.0ms
8.0ms
Acceptable
Acceptable
Acceptable
Acceptable
Note : The value of detection voltage and delay time can be changed by customer’s request. For details, please contact us.
1) The over-charge detection voltage can be selected in the range 4.0V to 4.5V in 5mV steps.
2) The over-charge hysteresis voltage can be selected in the range 0.0V to 0.4V in 50mV steps.
3) The over-discharge detection voltage can be selected in the range 2.0V to 3.0V in 5mV steps.
4) The charge over-current detection voltage can be selected in the range –0.25V to –0.05V in 5mV steps.
5) The discharge over-current detection voltage can be selected in the range 0.05V to 0.40V in 5mV steps.
6) The delay time can be changed within the value listed below.
Delay time
Symbol
tc
Selectable value
1.0s
Over-charge detection delay time
0.125s
31ms
8.0ms
3.75s
1.0s
Over-discharge detection delay time
Charge over-current detection delay time
* The value in bold is set for standard products
tdc
125ms
tic
125ms
AnaSem Inc.
2
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
Rev. E09-06
A7B Series
BLOCK DIAGRAM
Oscillator
Level
Shifter
Counter
VDD
CO
VM
Control Circuit
Short Detector
_
_
Over-charge
Detector
Charge
Over-current
Detector
_
DO
_
Over-discharge
Detector
Discharge
Over-current
Detector
Vss
CHIP PAD CONFIGURATION
(Unit : µm)
Chip pad layout
No.
Symbol
Descriptions
X
Y
1
2
3
4
5
DO
VM
FET gate connection for discharge control (CMOS output)
Voltage monitoring for charger negative
FET gate connection for charge control (CMOS output)
Positive power input
173.5
228.5
-1.1
428.5
-428.5
-428.5
428.5
428.5
CO
VDD
VSS
-37.5
-228.5
Negative power input
VDD
VSS
DO
VM
(0,0)
X
Chip size : 0.7mm×1.1mm
Thickness : 0.28mm±0.02mm
Pad size : 0.085mm×0.085mm
Chip base level : VDD
CO
Y
AnaSem Inc.
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.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
Rev. E09-06
A7B Series
ABSOLUTE MAXIMUM RATINGS
Items
Supply voltage
Symbol
VDD
VM
Ratings
Unit
V
VSS – 0.3 to VSS + 12
VDD – 28 to VDD + 0.3
VM – 0.3 to VDD + 0.3
VSS – 0.3 to VDD + 0.3
250
Input voltage of VM
Output voltage of CO
Output voltage of DO
Power dissipation
Operating temperature
Storage temperature
V
VCO
VDO
PD
V
V
mW
°C
°C
Topr
Tstg
–40 to +85
–55 to +125
ELECTRONICAL STATIC DISCHARGE (ESD)
A7B series are equipped ESD protection. However, please keep following conditions for preventing IC from excessive
electrical stress.
z
z
z
z
Tip of soldering iron, all of tools and testing machines must be connected to an earth plate.
Power supply must be put first ahead of input signal.
All input signals must be connected to an earth plate when you do not use IC.
Do not input beyond absolute maximum ratings even if a moment.
AnaSem Inc.
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.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
Rev. E09-06
A7B Series
ELECTRICAL CHARACTERISTICS
(Topr=25°C unless otherwise specified)
Test
Items
Symbol
Vc
Min.
Typ.
Max.
Conditions
Unit
circuit
Detection voltage
Vc
–0.025
Vc
–0.030
VHc
–0.025
Vdc
×0.975
VIc
–0.030
VIdc
–0.020
Vc
+0.025
Vc
+0.030
VHc
+0.025
Vdc
×1.025
VIc
+0.030
VIdc
+0.020
Vc
Vc
R1=330Ω
R1=330Ω
V
V
V
V
V
1
1
1
1
2
Over-charge detection voltage
Vc = 4.0 to 4.5V
Topr = –5°C to +55°C 1)
Over-charge hysteresis voltage
VHc = 0.0 to 0.4V
Over-discharge detection voltage
Vc = 2.0 to 3.0V
Charge over-current detection voltage
VIc = –0.25 to –0.05V
Discharge over-current detection voltage
VIdc = 0.05 to 0.40V
VHc
Vdc
VIc
VHc
Vdc
VIc
R1=330Ω
VIdc
VIdc
–1.3
V
V
2
2
Load short-circuiting detection voltage
Vshort
–1.7
–1.0
Based on VDD, VDD=3.5V
Input voltage
Input voltage between VDD and VSS
0V battery charge starting charger voltage
0V battery charge inhibiting battery voltage
VDD
Vcha
Vinh
1.8
-
-
8.0
1.4
1.7
Internal operating voltage
A7BxxxxA
V
V
V
-
0.9
1.2
3
3
0.7
A7BxxxxB
Current consumption
Current consumption on operation
Current consumption on shutdown
Iopr
Isdn
-
-
3.0
-
6.0
0.1
VDD=3.5V, VM=0V
VDD=VM=1.8V
μA
μA
4
4
Output resistance
CO : Pch ON resistance
Rcop
Rcon
Rdop
Rdon
Rdwn
1.5
3.0
1.0
4.5
1.5
CO=3.0V, VDD=3.5V, VM=0V
CO=0.5V, VDD=4.6V, VM=0V
DO=3.0V, VDD=3.5V, VM=0V
DO=0.5V, VDD=VM=1.8V
VDD=3.5V, VM=1.0V
KΩ
KΩ
KΩ
KΩ
KΩ
5
5
5
5
5
CO : Nch ON resistance
0.5
1.7
DO : Pch ON resistance
3.5
5.0
DO : Nch ON resistance
1.7
3.5
5.0
Discharge over-current release resistance
15.0
30.0
60.0
Detection delay time
Over-charge detection delay time
tc=0.125s or 1.0s or 3.75s
Over-discharge detection delay time
tdc=31ms or 125ms
Charge over-current detection delay time
tic=8ms or 125ms or 1000ms
tc
×0.70
tdc
×0.70
tic
×0.70
tc
×1.30
tdc
×1.30
tic
×1.30
VDD=Vc-0.2V→Vc+0.2V,
VM=0V
VDD=Vdc+0.2V→Vdc-0.2V,
VM=0V
tc
tdc
tic
tc
sec
6
6
6
tdc
tic
msec
msec
VDD=3.5V, VM=0V→-1.0V
Discharge over-current detection delay time
Load short-circuiting detection delay time
tidc
5.6
8.0
10.4
550
VDD=3.5V, VM=0V→1.0V
VDD=3.5V, VM=0V→3.5V
msec
6
6
tshort
190
370
μsec
Release delay time
Release delay time 1
Over-discharge release
Charge over-current release
Discharge over-current release
Load short-circuiting release
Release delay time 2
trel1
trel2
1.0
8.0
2.0
3.0
msec
msec
6
6
VDD=Vc+0.2V→Vc-0.2V,
VM=1.0V
16.0
24.0
Over-charge release
Note :
1) The specification for this temperature range is guaranteed by design, not tested in production.
AnaSem Inc.
5
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
Rev. E09-06
A7B Series
MEASUREMENT CONDITIONS
z Over-charge detection voltage, Over-charge hysteresis voltage --- [Circuit 1]
Set V1=3.5V and V2=0V. Over-charge detection voltage Vc is V1 at which VCO goes "Low" from "High" when
V1 is gradually increased from 3.5V. Then IC is released from the over-charge state and VCO goes "High" from
"Low" at the voltage "Measured Vc-VHc" when V1 is gradually decreased.
If V2 is set to the greater value than discharge over-current detection voltage VIdc in the over-charge state, VHc
is canceled and then IC is released from the over-charge state at Vc.
z Over-discharge detection voltage --- [Circuit 1]
Set V1=3.5V and V2=0V. Over-discharge detection voltage Vdc is V1 at which VDO goes "Low" from "High"
when V1 is gradually decreased from 3.5V. Next, set V2 under to charge over-current detection voltage VIc.
Then IC is released from the over-discharge state at Vdc and VDO goes "High" from "Low".
z Charge over-current detection voltage --- [Circuit 2]
Set V1=3.5V and V2=0V. Charge over-current detection voltage VIc is V2 at which VCO goes "Low" from "High"
when V2 is gradually decreased from 0V.
z Discharge over-current detection voltage --- [Circuit 2]
Set V1=3.5V and V2=0V. Discharge over-current detection voltage VIdc is V2 at which VDO goes "Low" from
"High" when V2 is gradually increased from 0V.
z Load short-circuiting detection voltage --- [Circuit 2]
Set V1=3.5V and V2=0V. Load short-circuiting detection voltage Vshort is V2 at which VDO goes "Low" from
"High" within a time between the minimum and the maximum value of load short-circuiting detection delay time
tshort, when V2 is increased rapidly within 10μs.
z 0V battery charge starting charger voltage --- [Circuit 3]
Set V1=V2=0V and decrease V2 gradually. 0V battery charge starting charger voltage Vcha is V2 when VCO
goes "High" ( V1-0.1V or higher ).
z 0V battery charge inhibiting battery voltage --- [Circuit 3]
Set V1=1.8V and V2=0V at first. Then set V2=V1-4.0V. Next, decrease V1 and V2 gradually, maintaining the
relation of V2=V1-4.0V. 0V battery charge inhibiting battery voltage Vinh is V1 when VCO goes "Low" ( V2+0.1V
or lower ).
z Current consumption on operation and shutdown --- [Circuit 4]
Set V1=3.5V and V2=0V on normal condition. IDD shows current consumption on operation Iopr.
Set V1=V2=1.8V on over-discharge condition. IDD shows current consumption on shutdown Isdn.
z CO : Pch ON resistance, CO : Nch ON resistance --- [Circuit 5]
Set V1=3.5V, V2=0V and V3=3.0V. (V1-V3)/|ICO| is Pch ON resistance Rcop.
Set V1=4.6V, V2=0V and V3=0.5V. V3/|ICO| is Nch ON resistance Rcon.
AnaSem Inc.
6
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
Rev. E09-06
A7B Series
z DO : Pch ON resistance, DO : Nch ON resistance --- [Circuit 5]
Set V1=3.5V, V2=0V and V4=3.0V. (V1-V4)/|IDO| is Pch ON resistance Rdop.
Set V1=V2=1.8V and V4=0.5V. V4/|IDO| is Nch ON resistance Rdon.
z Discharge over-current release resistance --- [Circuit 5]
Set V1=3.5V, V2=0V at first. And then, set V2=1.0V. V2/|IVM| is discharge over-current release resistance Rdwn.
z Over-charge detection delay time, Release delay time 2 --- [Circuit 6]
Set V2=0V. Increase V1 from the voltage Vc-0.2V to Vc+0.2V rapidly within 10μs. Over-charge detection
delay time tc is the time needed for VCO to go "Low" just after the change of V1.
Next, set V2=1V and decrease V1 from Vc+0.2V to Vc-0.2V rapidly within 10μs. Over-charge release delay
time trel 2 is the time needed for VCO to go "High" just after the change of V1.
z Over-discharge detection delay time, Release delay time 1 --- [Circuit 6]
Set V2=0V. Decrease V1 from the voltage Vdc+0.2V to Vdc-0.2V rapidly within 10μs. Over-discharge
detection delay time tdc is the time needed for VDO to go "Low" just after the change of V1.
Next, set V2=-1V and increase V1 from Vdc-0.2V to Vdc+0.2V rapidly within 10μs. Release delay time 1 trel1 in
case of over-discharge is the time needed for VDO to go "High" just after the change of V1.
z Charge over-current detection delay time, Release delay time 1 --- [Circuit 6]
Set V1=3.5V and V2=0V. Decrease V2 from 0V to -1V rapidly within 10μs. Charge over-current delay time tic
is the time needed for VCO to go "Low" just after the change of V2.
Next, increase V2 from -1V to 0V rapidly within 10μs. Release delay time 1 trel1 in case of charge over-current
is the time needed for VCO to go "High" just after the change of V2.
z Discharge over-current detection delay time, Release delay time 1 --- [Circuit 6]
Set V1=3.5V and V2=0V. Increase V2 from 0V to 1V rapidly within 10μs. Discharge over-current delay time
tidc is the time needed for VDO to go "Low" just after the change of V2.
Next, decrease V2 from 1V to 0V rapidly within 10μs. Release delay time 1 trel1 in case of discharge over-
current is the time needed for VDO to go "High" just after the change of V2.
z Load short-circuiting detection delay time, Release delay time 1 --- [Circuit 6]
Set V1=3.5V and V2=0V. Increase V2 from 0V to 3.5V rapidly within 10μs. Load short-circuiting detection
delay time tshort is the time needed for VDO to go "Low" just after the change of V2. Next, decrease V2 from
3.5V to 0V rapidly within 10μs. Release delay time 1 trel1 in case of load short-circuiting is the time needed for
VDO to go "High" just after the change of V2.
AnaSem Inc.
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.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
Rev. E09-06
A7B Series
MEASUREMENT CIRCUITS
z Circuit 1
z Circuit 2
330ꢀ
VDD
VDD
V1
A7B
0.1µF
A7B
0.1µF
V1=3.5V
VM
VM
VSS
VSS
DO
V
CO
DO
CO
V
V2
V2
VDO
V
VCO
VDO
V
VCO
z Circuit 3
z Circuit 4
IDD
A
VDD
VDD
VSS
A7B
A7B
0.1µF
V1
V1
0.1µF
VM
VM
VSS
DO
CO
V
DO
CO
V2
V2
10Mꢀ
VCO
z Circuit 5
z Circuit 6
VDD
VSS
VDD
VSS
A7B
A7B
0.1µF
V1
V1
VM
VM
DO
CO
A
DO
CO
V2
A
IVM
VDO TM
TM VCO
A
IDO
ICO
V4
V3
V2
TM = Time Measurement
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.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
Rev. E09-06
A7B Series
TYPICAL CONNECTION DIAGRAM
R1
VDD
C1
IC
Battery
VSS
DO
CO
VM
R2
EXTERNAL COMPONENTS
Min.
100ꢀ
0.01µF
500ꢀ
Items
Symbol
R1
Recommended value
Max.
1.0Kꢀ
1.0µF
6.0Kꢀ
Resistor 1
Capacitor 1
Resistor 2
330ꢀ
0.1µF
3.9Kꢀ
C1
R2
z
The supply voltage (VDD) to this IC is stabilized by R1 and C1. Moreover, R1 and R2 act as the current
restriction resistances at the time of reverse-connecting a charger, or at the time of connecting a charger which
outputs the voltage exceeding the absolute maximum rating of this IC. Please be sure to connect these
components.
z
z
z
If the value of R1 is too large, the over-charge detection voltage and the over-discharge detection voltage will
become high due to the current consumption of this IC. Please use the value within the limits shown in the table.
330ꢀ is recommended.
If the value of C1 is too small, this IC may be in a shutdown state at the time of the discharge over-current or the
load short-circuiting. Please use the value within the limits shown in the table for stable operation. 0.1μF is
recommended.
Please use the value within the limits shown in the table about the value of R2. In order to reduce the current at
the time of reverse-connecting a charger, we recommend you to choose R1 and R2 so that the sum total become
more than 4Kꢀ. The recommended value of R2 is 3.9Kꢀ.
Note)
The connection diagram and each value of external components shown above are just recommendation.
Including a battery and FETs, please determine the circuit after sufficient evaluation about your actual
application.
AnaSem Inc.
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.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
Rev. E09-06
A7B Series
DESCRIPTION OF OPERATION
z Normal condition
This IC monitors the battery voltage (VDD) and the voltage of VM terminal, and controls charge and discharge.
If the battery voltage (VDD) is in the range from the over-discharge detection voltage (Vdc) to the over-charge
detection voltage (Vc) and the VM terminal voltage is in the range from the charge over-current detection voltage
(VIc) to the discharge over-current detection voltage (VIdc), this IC turns on both the charge and discharge
control FETs. This state is called the normal condition, and charge and discharge are possible together.
z Discharge over-current detection, Load short-circuiting detection
When the discharge current becomes equal to or higher than the specified value under the normal condition, and
if the VM terminal voltage is in the range from the discharge over current detection voltage (VIdc) to the short-
circuiting detection voltage (Vshort) and that state is maintained during more than the discharge over-current
detection delay time (tidc), this IC turns off the discharge control FET to stop discharge. This state is called the
discharge over-current condition.
At that time, if the VM terminal voltage is equal to or higher than Vshort and that state is maintained during more
than the load short-circuiting detection delay time (tshort), this IC turns off the discharge control FET to stop
discharge. This state is called the load short-circuiting detection condition.
While load is connected, in both conditions, the VM terminal voltage equals to VDD potential due to the load, but it
falls by the discharge over-current release resistance (Rdwn) when the load is removed and the resistance
between (+) and (-) terminals of battery pack (refer to “TYPICAL CONNECTION DIAGRAM”) becomes larger
than the value which enables the automatic return.
Then the VM terminal voltage becomes less than VIdc, and if that state is maintained during more than the
release delay time 1 (trel1), this IC returns to normal condition.
Note)
The resistance value between (+) and (-) terminals of battery pack for automatic return changes with battery
voltage (VDD) or VIdc. The standard is expressed with the following equation.
Resistance value for automatic return = Rdwn × (VDD / VIdc - 1)
z Charge over-current detection
When the charge current becomes equal to or higher than the specified value under the normal condition, if the
VM terminal voltage becomes less than the charge over-current detection voltage (VIc) and that state is
maintained during more than the charge over-current detection delay time (tic), this IC turns off the charge
control FET to stop charge. This state is called the charge over-current detection condition.
Then the VM terminal voltage becomes equals to or higher than VIc and that state is maintained during more
than the release delay time 1 (trel1) when the charger is removed and the load is connected, this IC returns to
the normal condition.
Note)
If the VM terminal voltage becomes equal to or less than VSS-7V(typical), the charge over-current detection
delay time (tic) changes as below.
8msec model
→
8msec (not changed)
125msec model
1.0sec model
→
→
7msec (typical)
56msec (typical)
AnaSem Inc.
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.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
Rev. E09-06
A7B Series
z Over-charge detection
When the battery voltage (VDD) under the normal condition becomes equal to or higher than the over-charge
detection voltage (Vc) and that state is maintained during more than the over-charge detection delay time (tc),
this IC turns off the charge control FET and stops charge. This state is called the over-charge detection condition.
Release from the over-charge detection condition includes following three cases.
(1) When VDD falls to Vc-VHc without load and that state is maintained during more than the delay time 2 (trel2),
this IC turns on the charge control FET and returns to the normal condition.
* VHc : Over-charge hysteresis voltage
(2) When the load is installed and discharge starts, the discharge current flows through the internal parasitic
diode of the charge control FET. Then the VM terminal voltage rises to only the Vf voltage of the internal
parasitic diode from VSS potential. At this time, if the VM terminal voltage is higher than the discharge over-
current detection voltage (VIdc) and VDD is equal to or less than Vc, this IC returns to the normal condition
when this state continues more than the delay time 2 (trel2).
(3) In case (2), if the VM terminal voltage is higher than the discharge over-current detection voltage (VIdc) and
VDD is equal to or higher than Vc, battery is discharged until VDD becomes less than Vc, and then this IC
returns to the normal condition when this state continues more than the delay time 2 (trel2).
z Over-discharge detection
When the battery voltage (VDD) under the normal condition becomes equal to or less than the over-discharge
detection voltage (Vdc) and that state is maintained during more than the over-discharge detection delay time
(tdc), this IC turns off the discharge control FET and stops discharge. This state is called the over-discharge
detection condition. The over-discharge detection condition is released when the charger is connected and
following three cases are included.
(1) When the charger is connected and charge starts, the charge current flows through the internal parasitic
diode of the discharge control FET. VDD is higher than Vdc and that state is maintained during more than the
delay time 1 (trel1), this IC is released from over-discharge detection condition automatically and returns to
the normal condition.
(2) In case (1), if VDD is less than Vdc, this IC returns to the normal condition when VDD becomes equal to or
higher than Vdc and this state continues more than the delay time 1 (trel1).
(3) Although there is very little possibility, in case (1), if the VM terminal voltage is higher than the charge over-
current detection voltage (VIc) even if the charge current flows through the internal parasitic diode of the
discharge control FET, this IC returns to the normal condition when VDD becomes equal to or higher than
Vdc+VHdc and this state continues more than delay time 1 (trel1).
* VHdc = 0.4V (typical) ---- This voltage is tested in production, but is not specified.
This IC stops all internal circuits ( Shutdown condition ) after detecting the over-discharge and reduces current
consumption. ( Max 0.1µA, at VDD=1.8V )
z Charge to 0V battery
(1) 0V battery charge function
If the voltage of charger (the voltage between VDD and VM) is larger than the 0V battery charge starting
charger voltage (Vcha), 0V battery charge becomes possible when CO terminal outputs VDD terminal
potential and turns on the charge control FET.
(2) 0V battery charge inhibiting function
If the voltage of the battery (VDD) is equal to or less than the 0V battery charge inhibiting battery voltage
(Vinh), charge is inhibited when CO terminal outputs VM terminal potential and turns off a charge control FET.
AnaSem Inc.
11
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
Rev. E09-06
A7B Series
TIMING CHART
z Discharge over-current detection, Load short-circuiting detection, Charge over-current detection
Load connected
Charger connected
Load connected
Load connected
VC
VDD
VM
DO
CO
Vdc
VDD
Vshort
VIdc
VSS
VIc
VDD
VSS
VDD
VSS
VM
tic
tshort
tidc
trel1
trel1
trel1
Vc
: Over-charge detection voltage
: Over-discharge detection voltage
tic
: Charge over-current detection delay time
Vdc
VIc
tidc : Discharge over-current detection delay time
tshort : Load short-circuiting detection delay time
trel1 : Release delay time 1
: Charge over-current detection voltage
VIdc : Discharge over-current detection voltage
Vshort : Load short-circuiting detection voltage
AnaSem Inc.
12
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
Rev. E09-06
A7B Series
z Over-charge detection
Load connected
Charger connected
Load connected
Charger connected
Charger connected
VC
Vc-VHc
VDD
VM
DO
CO
Vdc
VIdc
VSS
VDD
VSS
VDD
VSS
VM
tc
tc
tc
trel2
trel2
trel2
Vc : Over-charge detection voltage
tc
: Over-charge detection delay time
Vdc : Over-discharge detection voltage
VHc : Over-charge hysteresis voltage
VIdc : Discharge over-current detection voltage
trel2 : Release delay time 2
AnaSem Inc.
13
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
Rev. E09-06
A7B Series
z Over-discharge detection
Charger connected
Load connected
Load connected
Charger connected
Charger connected
Load connected
VC
VDD
VM
DO
CO
Vc+VHdc
Vdc
VDD
VIdc
VSS
VIc
VDD
VSS
VDD
VSS
VM
tdc
tdc
tdc
trel1
trel1
trel1
Vc
: Over-charge detection voltage
tdc
: Over-discharge detection delay time
: Release delay time 1
Vdc : Over-discharge detection voltage
VHdc : 0.4V (typical)
trel1
VIc : Charge over-current detection voltage
VIdc : Discharge over-current detection voltage
AnaSem Inc.
14
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
Rev. E09-06
A7B Series
TYPICAL CHARACTERISTICS
z Detection voltage
Over-charge detection voltage
Over-discharge detection voltage
vs.
Temperature
vs.
Temperature
4.305
2.330
4.295
4.285
4.275
4.265
4.255
4.245
2.320
2.310
2.300
2.290
2.280
2.270
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
[A7BE01AA]
[A7BE01AA]
Topr (°C)
Topr (°C)
Charge over-current detection voltage
Discharge over-current detection voltage
vs.
vs.
Temperature
Temperature
-0.080
-0.085
-0.090
-0.095
-0.100
-0.105
-0.110
-0.115
-0.120
0.120
0.115
0.110
0.105
0.100
0.095
0.090
0.085
0.080
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
[A7BE01AA]
[A7BE01AA]
Topr (°C)
Topr (°C)
Load short-circuiting detection voltage
vs.
Temperature
-1.10
-1.15
-1.20
-1.25
-1.30
-1.35
-1.40
-1.45
-1.50
Based on VDD=3.5V
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
Topr (°C)
AnaSem Inc.
15
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
Rev. E09-06
A7B Series
z 0V battery charge function
0V battery charge starting charger voltage
0V battery charge inhibiting battery voltage
vs.
vs.
Temperature
Temperature
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
[A7BxxxxA]
[A7BxxxxB]
Topr (°C)
Topr (°C)
z Current consumption
Current consumption on operation
Current consumption on shutdown
vs.
vs.
Temperature
Temperature
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0.10
0.08
0.06
0.04
0.02
0.00
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
[A7BE01AA]
[A7BE01AA]
Topr (°C)
Topr (°C)
Current consumption
vs.
Power supply voltage
6.0
5.0
4.0
3.0
2.0
1.0
0.0
0
1
2
3
4
5
6
7
8
VDD (V)
[A7BE01AA]
AnaSem Inc.
16
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
Rev. E09-06
A7B Series
z Resistance
CO terminal Pch ON resistance
CO terminal Nch ON resistance
vs.
vs.
Temperature
Temperature
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
Topr (°C)
Topr (°C)
DO terminal Pch ON resistance
DO terminal Nch ON resistance
vs.
vs.
Temperature
Temperature
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
Topr (°C)
Topr (°C)
Discharge over-current release resistance
vs.
Temperature
60
50
40
30
20
10
0
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
Topr (°C)
AnaSem Inc.
17
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
Rev. E09-06
A7B Series
z Delay time
Over-charge detection delay time
Release delay time 2
vs.
vs.
Temperature
Temperature
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
30
25
20
15
10
5
0
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
Topr (°C)
Topr (°C)
[A7BE01AA]
[A7BE01AA]
Over-discharge detection delay time
Charge over-current detection delay time
vs.
vs.
Temperature
Temperature
12
11
10
9
45
40
35
30
25
20
15
8
7
6
5
4
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
Topr (°C)
[A7BE01AA]
Topr (°C)
[A7BE01AA]
Discharge over-current detection delay time
Load short-circuiting detection delay time
vs.
vs.
Temperature
Temperature
12
11
10
9
500
450
400
350
300
250
200
150
100
8
7
6
5
4
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
Topr (°C)
Topr (°C)
[A7BE01AA]
[A7BE01AA]
AnaSem Inc.
18
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
Rev. E09-06
A7B Series
Release delay time 1
vs.
Temperature
3.0
2.5
2.0
1.5
1.0
0.5
0.0
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
Topr (°C)
[A7BE01AA]
z Characteristics related to the value of external components
Over-charge detection voltage
Over-discharge detection voltage
vs.
R1
vs.
R1
4.279
4.278
4.277
4.276
4.275
4.274
4.273
4.272
4.271
2.303
2.302
2.301
2.300
2.299
2.298
0
100 200 300 400 500 600 700 800 900 1000
0
100 200 300 400 500 600 700 800 900 1000
R1 (ꢀ)
R1 (ꢀ)
[A7BE01AA]
[A7BE01AA]
Reverse connected charger current
vs.
R2
5.000
4.000
3.000
2.000
1.000
0.000
R1=330ꢀ
Vcharger=4.5V
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
R2 (Kꢀ)
AnaSem Inc.
19
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
Rev. E09-06
A7B Series
PACKAGE DIMENSIONS (SOT-26)
Top view
Bottom view
2.9±0.2
1.9±0.2
+0.10
-0.15
0.16
6
5
4
Marked Side
0~0.1
1
2
3
0~10°
0.95
0.95
(Unit : mm)
Front view
2.9±0.2
0.4±0.1
PIN CONFIGURATION
VSS
6
VDD
NC
4
Pin No.
Symbol
DO
Descriptions
1
2
3
4
5
6
FET gate connection for discharge control
Voltage monitoring for charger negative
FET gate connection for charge control
N/C
5
VM
(Marked side)
CO
NC
1
2
3
VDD
VSS
Positive power input
Negative power input
DO
VM
CO
AnaSem Inc.
20
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
Rev. E09-06
A7B Series
PACKAGE DIMENSIONS (SON-5)
Top view
Bottom view
1.3±0.1
5
4
(Marked side)
1
2
3
+0.10
-0
0.11
0.2
0.6±0.05
2.0±0.1
(Unit : mm)
Front view
2.0±0.1
0.65±0.1 0.65±0.1
PIN CONFIGURATION
VM
5
CO
4
Pin No.
Symbol
DO
Descriptions
1
2
3
4
5
FET gate connection for discharge control
Positive power input
VDD
VSS
CO
(Marked side)
Negative power input
FET gate connection for charge control
Voltage monitoring for charger negative
1
2
3
VM
DO
VDD
VSS
AnaSem Inc.
21
.......... Future of the analog world
AnaSem
AnaSem Inc. may change the products described in this data sheet, or may discontinue production or services
without any notice in order to supply the best products through improve the design and performance. Customers
are recommended to obtain the latest data or information before placing orders in order to make sure the data or
information required is the newest. It is necessary for customers to fully understand the products described in this
data sheet and to use it in accordance with its specifications. The products described in this data sheet are not
intended to use for the apparatus which have influence on human lives due to the failure or malfunction of the
products. AnaSem Inc. is not responsible for any support to customer’s application, product design, software
performance, patent infringement or service. AnaSem Inc. does not disclose or imply a guarantee or description
about being licensed based on patents, copy-rights, circuit location license, or other intellectual properties
associated with the devices or combinations in which the products or service of AnaSem Inc. are used or can be
used, or which cover the methods. Customers should not export, directly or indirectly, any products without
obtaining required licenses and approvals in advance from appropriate government agencies.
ANASEM INC.
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