ANASEM A7BW01AA

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
AnaSem
Products Data Sheet
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 /
RoHS
Li-polymer battery from over-charge, over-discharge, charge over-current and
COMPLIANCE
discharge over-current.
FEATURES
z
High accuracy detection voltage ······ Over-charge detection
±25mV (Topr = 25°C)
±30mV (Topr = –5°C ~ +55°C)
z
z
Over-charge hysteresis
±25mV
Over-discharge detection
±2.5%
Charge over-current detection
±30mV
Discharge over-current detection
±20mV
4.0V ~ 4.5V (5mV step)
Selectable detection voltage ·············Over-charge detection
Over-charge hysteresis
0.0V ~ 0.4V (50mV step)
Over-discharge detection
2.0V ~ 3.0V (5mV step)
Charge over-current detection
–0.25V ~ –0.05V (5mV step)
Discharge over-current detection
0.05V ~ 0.40V (5mV step)
Typ. 1.0s
Delay time (internal adjustment) ······ Over-charge detection delay time
Over-discharge detection delay time
Typ. 31.0ms
Charge over-current detection delay time
Typ. 8.0ms
Discharge over-current detection delay time
Typ. 8.0ms
Load short-circuiting detection delay time
Typ. 370μs
Release delay time 1
Typ. 2.0ms
Release delay time 2
Typ. 16.0ms
z
High withstand voltage ····················· Absolute maximum rating
28V (VM & CO terminals)
z
Low current consumption ················· Operation
Typ. 3.0μA
Over-discharge condition
Max. 0.1μA
z
Wide operating temperature range ··············································································· –40°C ~ +85°C
z
Selectable 0V battery charging function or 0V battery charge inhibiting function
1
AnaSem Inc.
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
A7B Series
Rev. E09-06
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
Serial code from 00 to 99
* Depend upon selected value by customer
Delivery form
C : Chip in tray
W : 5 inches wafer
E : SOT-26
N : SON-5
STANDARD MODELS LINE-UPS
Model No.
Selectable items
Over-charge detection voltage 1)
Over-charge hysteresis voltage
2)
Over-discharge detection voltage
3)
A7BE01AA
A7BE02AA
A7BE03AA
A7BE04AA
4.275V
4.280V
4.290V
4.325V
0.20V
0.20V
0.20V
0.25V
2.300V
2.300V
2.300V
2.500V
Charge over-current detection voltage 4)
–0.100V
–0.100V
–0.100V
–0.150V
Discharge over-current detection voltage 5)
0.100V
0.100V
0.100V
0.150V
1.0s
1.0s
1.0s
1.0s
31.0ms
31.0ms
31.0ms
31.0ms
Over-charge detection delay time 6)
Over-discharge detection delay time
6)
Charge over-current detection delay time
6)
0V battery charge function
8.0ms
8.0ms
8.0ms
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
Over-charge detection delay time
tc
Over-discharge detection delay time
Charge over-current detection delay time
Selectable value
0.125s
1.0s
tdc
31ms
125ms
tic
8.0ms
125ms
3.75s
1.0s
* The value in bold is set for standard products
2
AnaSem Inc.
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
A7B Series
Rev. E09-06
BLOCK DIAGRAM
Oscillator
Counter
VDD
Level
Shifter
CO
Control Circuit
Short Detector
_
+
Over-charge
Detector
+
_
VM
+
_
DO
Charge
Over-current
Detector
+
_
Over-discharge
Detector
Discharge
Over-current
Detector
Vss
CHIP PAD CONFIGURATION
(Unit : µm)
Chip pad layout
No.
Symbol
Descriptions
X
Y
1
DO
FET gate connection for discharge control (CMOS output)
173.5
428.5
228.5
-428.5
-1.1
-428.5
2
VM
Voltage monitoring for charger negative
3
CO
FET gate connection for charge control (CMOS output)
4
VDD
Positive power input
-37.5
428.5
5
VSS
Negative power input
-228.5
428.5
VSS VDD
X
DO
(0,0)
Chip size : 0.7mm×1.1mm
CO
VM
Thickness : 0.28mm±0.02mm
Pad size : 0.085mm×0.085mm
Chip base level : VDD
Y
3
AnaSem Inc.
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
A7B Series
Rev. E09-06
ABSOLUTE MAXIMUM RATINGS
Items
Symbol
Ratings
Unit
Supply voltage
VDD
VSS – 0.3 to VSS + 12
V
Input voltage of VM
VM
VDD – 28 to VDD + 0.3
V
Output voltage of CO
VCO
VM – 0.3 to VDD + 0.3
V
Output voltage of DO
VDO
VSS – 0.3 to VDD + 0.3
V
PD
250
mW
Operating temperature
Topr
–40 to +85
°C
Storage temperature
Tstg
–55 to +125
°C
Power dissipation
ELECTRONICAL STATIC DISCHARGE (ESD)
A7B series are equipped ESD protection. However, please keep following conditions for preventing IC from excessive
electrical stress.
z
Tip of soldering iron, all of tools and testing machines must be connected to an earth plate.
z
Power supply must be put first ahead of input signal.
z
All input signals must be connected to an earth plate when you do not use IC.
z
Do not input beyond absolute maximum ratings even if a moment.
4
AnaSem Inc.
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
A7B Series
Rev. E09-06
ELECTRICAL CHARACTERISTICS
Items
Symbol
Min.
Typ.
Max.
(Topr=25°C unless otherwise specified)
Test
Conditions
Unit
circuit
Detection voltage
Over-charge detection voltage
Vc = 4.0 to 4.5V
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
Load short-circuiting detection voltage
Vc
VHc
Vdc
VIc
VIdc
Vc
–0.025
Vc
–0.030
VHc
–0.025
Vdc
×0.975
VIc
–0.030
VIdc
–0.020
Vshort
–1.7
Input voltage between VDD and VSS
VDD
1.8
0V battery charge starting charger voltage
Vcha
0V battery charge inhibiting battery voltage
Vinh
Vc
Vc
VHc
Vdc
VIc
VIdc
Vc
+0.025
Vc
+0.030
VHc
+0.025
Vdc
×1.025
VIc
+0.030
VIdc
+0.020
–1.3
R1=330Ω
V
1
R1=330Ω
1)
Topr = –5°C to +55°C
V
1
R1=330Ω
V
1
V
1
V
2
V
2
–1.0
Based on VDD, VDD=3.5V
V
2
-
8.0
Internal operating voltage
V
-
-
0.9
1.4
A7BxxxxA
V
3
0.7
1.2
1.7
A7BxxxxB
V
3
Input voltage
Current consumption
Current consumption on operation
Iopr
-
3.0
6.0
VDD=3.5V, VM=0V
μA
4
Current consumption on shutdown
Isdn
-
-
0.1
VDD=VM=1.8V
μA
4
CO : Pch ON resistance
Rcop
1.5
3.0
4.5
CO=3.0V, VDD=3.5V, VM=0V
KΩ
5
CO : Nch ON resistance
Rcon
0.5
1.0
1.5
CO=0.5V, VDD=4.6V, VM=0V
KΩ
5
DO : Pch ON resistance
Rdop
1.7
3.5
5.0
DO=3.0V, VDD=3.5V, VM=0V
KΩ
5
DO : Nch ON resistance
Rdon
1.7
3.5
5.0
DO=0.5V, VDD=VM=1.8V
KΩ
5
Discharge over-current release resistance
Rdwn
15.0
30.0
60.0
VDD=3.5V, VM=1.0V
KΩ
5
sec
6
msec
6
Output resistance
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
Discharge over-current detection delay time
Load short-circuiting detection delay time
tidc
tc
×0.70
tdc
×0.70
tic
×0.70
5.6
tshort
190
tc
tdc
tic
VDD=3.5V, VM=0V→-1.0V
msec
6
8.0
tc
×1.30
tdc
×1.30
tic
×1.30
10.4
VDD=3.5V, VM=0V→1.0V
msec
6
370
550
VDD=3.5V, VM=0V→3.5V
μsec
6
msec
6
msec
6
tc
tdc
tic
VDD=Vc-0.2V→Vc+0.2V,
VM=0V
VDD=Vdc+0.2V→Vdc-0.2V,
VM=0V
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
Over-charge release
trel1
1.0
2.0
3.0
trel2
8.0
16.0
24.0
VDD=Vc+0.2V→Vc-0.2V,
VM=1.0V
Note :
1)
The specification for this temperature range is guaranteed by design, not tested in production.
5
AnaSem Inc.
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
A7B Series
Rev. E09-06
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]
6
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.
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
A7B Series
Rev. E09-06
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 overcurrent 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.
7
AnaSem Inc.
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
A7B Series
Rev. E09-06
MEASUREMENT CIRCUITS
z Circuit 1
z Circuit 2
330Ω
VDD
V1
0.1µF
VDD
A7B
VSS
CO
DO
V1=3.5V
VM
VDO V
0.1µF
A7B
VSS
CO
DO
V2
VDO V
V VCO
z Circuit 3
VM
V2
V VCO
z Circuit 4
IDD
A
VDD
V1
0.1µF
A7B
VSS
V1
VM
CO
DO
0.1µF
VDD
VSS
A7B
CO
DO
V2
VM
V2
10MΩ
VCO V
z Circuit 5
z Circuit 6
VDD
V1
0.1µF
VDD
A7B
VSS
DO
V1
VM
CO
VSS
A7B
DO
VM
CO
A IVM
IDO
V4
8
A
VDO TM
A ICO
V3
V2
V2
TM VCO
TM = Time Measurement
AnaSem Inc.
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
A7B Series
Rev. E09-06
TYPICAL CONNECTION DIAGRAM
R1
VDD
C1
Battery
IC
VSS
DO
CO
VM
R2
EXTERNAL COMPONENTS
Items
Symbol
Min.
Max.
Resistor 1
R1
330Ω
100Ω
1.0KΩ
Capacitor 1
C1
0.1µF
0.01µF
1.0µF
3.9KΩ
500Ω
6.0KΩ
Resistor 2
z
R2
Recommended value
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
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.
330Ω is recommended.
z
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.
z
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 4KΩ. The recommended value of R2 is 3.9KΩ.
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.
9
AnaSem Inc.
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
A7B Series
Rev. E09-06
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 shortcircuiting 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
125msec model
1.0sec model
10
→
8msec (not changed)
→
7msec (typical)
→ 56msec (typical)
AnaSem Inc.
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
A7B Series
Rev. E09-06
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 overcurrent 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 overcurrent 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.
11
AnaSem Inc.
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
A7B Series
Rev. E09-06
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
Vdc
VM
VDD
Vshort
VIdc
VSS
VIc
VDD
DO
VSS
VDD
CO
VSS
VM
tic
tshort
tidc
trel1
trel1
trel1
Vc
: Over-charge detection voltage
tic
: Charge over-current detection delay time
Vdc
: Over-discharge detection voltage
tidc
: Discharge over-current detection delay time
VIc
: Charge over-current detection voltage
tshort : Load short-circuiting detection delay time
VIdc
: Discharge over-current detection voltage
trel1
: Release delay time 1
Vshort : Load short-circuiting detection voltage
12
AnaSem Inc.
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
A7B Series
Rev. E09-06
z Over-charge detection
Load connected
Charger connected
Charger connected
Load connected
Charger connected
VC
VDD
Vc-VHc
Vdc
VM
VIdc
VSS
VDD
DO
VSS
VDD
CO
VSS
VM
tc
tc
tc
Vc
: Over-charge detection voltage
Vdc : Over-discharge detection voltage
trel2
trel2
trel2
tc
: Over-charge detection delay time
trel2 : Release delay time 2
VHc : Over-charge hysteresis voltage
VIdc : Discharge over-current detection voltage
13
AnaSem Inc.
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
A7B Series
Rev. E09-06
z Over-discharge detection
Charger connected
Load connected
Charger connected
Charger connected
Load connected
Load connected
VC
VDD
Vc+VHdc
Vdc
VDD
VM
VIdc
VSS
VIc
VDD
DO
VSS
VDD
CO
VSS
VM
tdc
tdc
trel1
Vc
: Over-charge detection voltage
Vdc
: Over-discharge detection voltage
tdc
trel1
trel1
tdc
: Over-discharge detection delay time
trel1 : Release delay time 1
VHdc : 0.4V (typical)
VIc
: Charge over-current detection voltage
VIdc : Discharge over-current detection voltage
14
AnaSem Inc.
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
A7B Series
Rev. E09-06
TYPICAL CHARACTERISTICS
z Detection voltage
Over-discharge detection voltage
vs.
Temperature
4.305
2.330
4.295
2.320
4.285
2.310
Vdc (V)
Vc (V)
Over-charge detection voltage
vs.
Temperature
4.275
2.300
4.265
2.290
4.255
2.280
4.245
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
2.270
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
[A7BE01AA]
Topr (°C)
[A7BE01AA]
Discharge over-current detection voltage
vs.
Temperature
-0.080
0.120
-0.085
0.115
-0.090
0.110
-0.095
0.105
VIdc (V)
VIc (V)
Charge over-current detection voltage
vs.
Temperature
-0.100
-0.105
Topr (°C)
0.100
0.095
-0.110
0.090
-0.115
0.085
-0.120
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
0.080
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
[A7BE01AA]
Topr (°C)
[A7BE01AA]
Topr (°C)
Load short-circuiting detection voltage
vs.
Temperature
-1.10
-1.15
Based on VDD=3.5V
Vshort (V)
-1.20
-1.25
-1.30
-1.35
-1.40
-1.45
-1.50
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
Topr (°C)
15
AnaSem Inc.
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
A7B Series
Rev. E09-06
z 0V battery charge function
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
0V battery charge inhibiting battery voltage
vs.
Temperature
Vinh (V)
Vcha (V)
0V battery charge starting charger voltage
vs.
Temperature
Topr (°C)
[A7BxxxxA]
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
[A7BxxxxB]
Topr (°C)
z Current consumption
Current consumption on shutdown
vs.
Temperature
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
Topr (°C)
[A7BE01AA]
0.10
0.08
Isdn (µA)
Iopr (µA)
Current consumption on operation
vs.
Temperature
0.06
0.04
0.02
0.00
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
[A7BE01AA]
Topr (°C)
Current consumption
vs.
Power supply voltage
6.0
Iopr (µA)
5.0
4.0
3.0
2.0
1.0
0.0
0
1
2
[A7BE01AA]
16
3
4
5
6
7
8
VDD (V)
AnaSem Inc.
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
A7B Series
Rev. E09-06
z Resistance
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
CO terminal Nch ON resistance
vs.
Temperature
Rcon (KΩ)
Rcop (KΩ)
CO terminal Pch ON resistance
vs.
Temperature
Topr (°C)
Topr (°C)
Topr (°C)
DO terminal Nch ON resistance
vs.
Temperature
Rdon (KΩ)
Rdop (KΩ)
DO terminal Pch ON resistance
vs.
Temperature
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
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
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
Topr (°C)
Discharge over-current release resistance
vs.
Temperature
60
Rdwn (KΩ)
50
40
30
20
10
0
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
Topr (°C)
17
AnaSem Inc.
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
A7B Series
Rev. E09-06
z Delay time
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
[A7BE01AA]
Release delay time 2
vs.
Temperature
30
25
trel2 (msec)
tc (sec)
Over-charge detection delay time
vs.
Temperature
Topr (°C)
[A7BE01AA]
11
tic (msec)
tdc (msec)
Topr (°C)
Charge over-current detection delay time
vs.
Temperature
12
40
35
30
25
10
9
8
7
6
20
5
15
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
[A7BE01AA]
4
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
Topr (°C)
[A7BE01AA]
Discharge over-current detection delay time
vs.
Temperature
500
11
450
10
400
tshort (µsec)
tidc (msec)
10
0
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
45
9
8
7
Topr (°C)
Load short-circuiting detection delay time
vs.
Temperature
350
300
250
6
200
5
150
4
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
100
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
[A7BE01AA]
18
15
5
Over-discharge detection delay time
vs.
Temperature
12
20
Topr (°C)
[A7BE01AA]
Topr (°C)
AnaSem Inc.
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
A7B Series
Rev. E09-06
Release delay time 1
vs.
Temperature
3.0
trel1 (msec)
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
[A7BE01AA]
Topr (°C)
z Characteristics related to the value of external components
Over-charge detection voltage
vs.
R1
4.279
2.303
4.278
2.302
Vdc (V)
4.277
Vc (V)
Over-discharge detection voltage
vs.
R1
4.276
4.275
4.274
4.273
2.301
2.300
2.299
4.272
4.271
0
100 200 300 400 500 600 700 800 900 1000
[A7BE01AA]
Icharger (mA)
5.000
4.000
R1 (Ω)
2.298
0
100 200 300 400 500 600 700 800 900 1000
[A7BE01AA]
R1 (Ω)
Reverse connected charger current
vs.
R2
R1=330Ω
Vcharger=4.5V
3.000
2.000
1.000
0.000
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 (KΩ)
19
AnaSem Inc.
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
A7B Series
Rev. E09-06
PACKAGE DIMENSIONS (SOT-26)
Top view
Bottom view
2.9±0.2
1.9±0.2
Marked Side
1
2
0.95
3
2.8±0.2
4
0.6±0.1
5
+0.10
-0.15
1.6±0.2
6
0.16
0~0.1
0~10°
0.95
(Unit : mm)
Front view
0.4±0.1
0.0±0.10
1.1±0.1
2.9±0.2
PIN CONFIGURATION
Pin No.
Symbol
Descriptions
1
DO
FET gate connection for discharge control
2
VM
Voltage monitoring for charger negative
3
CO
FET gate connection for charge control
4
NC
N/C
5
VDD
Positive power input
6
VSS
Negative power input
20
VSS
VDD
NC
6
5
4
(Marked side)
1
2
3
DO
VM
CO
AnaSem Inc.
.......... Future of the analog world
Single-cell Li-ion / Li-polymer Battery Protection IC
A7B Series
Rev. E09-06
PACKAGE DIMENSIONS (SON-5)
Top view
Bottom view
4
0.2±0.1
1.6±0.1
2.0±0.1
5
0.1±0.1
1.3±0.1
(Marked side)
1
2
3
+0.10
0.11
0.2 -0
0.6±0.05
2.0±0.1
(Unit : mm)
Front view
0.65±0.1 0.65±0.1
0.6±0.05
2.0±0.1
PIN CONFIGURATION
Pin No.
Symbol
Descriptions
1
DO
FET gate connection for discharge control
2
VDD
Positive power input
3
VSS
Negative power input
4
CO
FET gate connection for charge control
5
VM
Voltage monitoring for charger negative
21
VM
CO
5
4
(Marked side)
1
2
3
DO
VDD
VSS
AnaSem Inc.
.......... 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
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performance, patent infringement or service. AnaSem Inc. does not disclose or imply a guarantee or description
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