ETC EUP9232

芯美电子
EUP9232
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
Highly accurate voltage detector…………...Overcharge detection (Topt=+25°C)
z
Overcharge hysteresis
±50mV
Overdischarge detection
±80mV
Overcurrent 1 detection
±20mV
Variety of detector……………………………Overcharge detection
z
±25mV
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
Overdischarge hysteresis
10mV
*2
0.0V-1V step of 100mV
Overcurrent 1 detection
0.095V-0.3V step of 10mV
Overcurrent 2 detection
0.9V(fixed)
*1 Overcharge release voltage=Over detection voltage-Overcharge hysteresis voltage
*2 Overdischarge release voltage = Overdischarge detection voltage-Overdischarge hysteresis voltage.
High input-voltage device: Absolute maximum ratings 28V
Wide operating voltage range :2 to 16V
The delay time for every detection can be set via an external capacitor.
z
z
z
(Each delay time for Overcharge detection, Overdischarge detection, Overcurent detection are
“Proportion of hundred to ten to one”.)
z
Two overcurrent detection levels (Protection for shourt-circuiting)
z
Internal auxiliary over voltage detection circuit (Fall-safe for overcharge detection voltage)
z
Internal charge circuit for 0V battery (Unavailable is option)
z
Low current consumption
„
„
z
z
Operation mode:
5µA typ. 12µA max. (-40 to +85°C)
Power-down mode 0.1µA max. (-40 to +85°C)
Package: TSSOP-8
RoHS compliant and 100% lead (Pb)-free
APPLICATIONS
z
Lithium-ion rechargeable battery packs.
DS9232 Ver1.1
Feb. 2007
1
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芯美电子
EUP9232
Block Diagram
Figure1.
Pin Configurations
Package Type
Pin Configurations
TSSOP-8
Pin Description
Pin No.
Symbol
1
SENS
2
3
DO
CO
4
VM
5
6
7
8
VSS
ICT
VC
VCC
DS9232 Ver1.1
Feb. 2007
Pin Description
Detection pin for voltage between SENS and VC (Detection for overcharge
and overdischarge)
FET gate connection pin for discharge control (CMOS output)
FET gate connection pin for charge control (CMOS output)
Detection pin for voltage between VM and VSS (Overcurrent detection
pin)
Negative power input pin
Capacitor connection pin for detection delay
Middle voltage input pin
Positive power input pin
2
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芯美电子
EUP9232
Absolute Maximum Ratings
„
Input voltage between VCC and VSS --------------------------------------------------
VSS -0.3 V to VSS +18 V
„
Input pin voltage for VM --------------------------------------------------------------
VCC -28V to VCC +0.3 V
„
Input pin voltage for SENS and ICT -------------------------------------------------
VSS -0.3V to VCC +0.3 V
„
Output pin voltage for CO -------------------------------------------------------------
VVM -0.3 V to VCC +0.3 V
„
Output pin voltage for DO --------------------------------------------------------------- VSS -0.3 V to VCC +0.3 V
„
Power dissipation TSSOP-8----------------------------------------------------------------------------
„
Operating temperature range ---------------------------------------------------------------------
„
Storage temperature range
---------------------------------------------------------------------
300mW
-40°C to +85°C
-40°C to +125°C
Ordering Information
Order Number
Package Type
EUP9232AAQIR1
TSSOP-8
EUP9232ABQIR1
TSSOP-8
EUP9232ACQIR1
TSSOP-8
EUP9232ADQIR1
TSSOP-8
EUP9232AEQIR1
TSSOP-8
EUP9232AFQIR1
TSSOP-8
EUP9232AGQIR1
TSSOP-8
EUP9232AHQIR1
TSSOP-8
Marking
XXXX
P9232A
XXXX
P9232B
XXXX
P9232C
XXXX
P9232D
XXXX
P9232E
XXXX
P9232F
XXXX
P9232G
XXXX
P9232H
Operating Temperature range
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
-40°C to 85°C
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.
DS9232 Ver1.1
Feb. 2007
3
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芯美电子
EUP9232
Application Circuit
Figure2.
Symbol
Parts
Purpose
Recommend
min.
max.
Remarks
FET1
FET2
R1
C1
R2
C2
R4
Nch MOSFET
Nch MOS FET
Chip resistor
Chip capacitor
Chip resistor
Chip capacitor
Chip resistor
Discharge control
Charge control
ESD protection
Filter
ESD protection
Filter
ESD protection


1kΩ
0.22 µF
1kΩ
0.22 µF
1 kΩ


300 Ω
0 µF
300 Ω
0 µF
= R1 min.


1 kΩ
1 µF
1 kΩ
1 µF
= R1 max.
C3
Chip capacitor
Delay time setting
0.22 µF
0 µF
1 µF
R3
Chip resistor
1 kΩ
300 Ω
5 kΩ






Same value as R1 and R2. *1
Attention should be paid to
*2
leak current of C3.
Discharge can’t be stopped at
less than 300 Ω when a charger
is reverse-connected. *3
Protection for
charger
reverse
connection
*1 R4=R1 is required. Overcharge detection voltage increases by R4. For example 10 kΩ (R4) increases overcharge detection voltage
by 20 mV.
*2 The overcharge detection delay time (tCU), the overdischarge detection delay time (tDD), and the over current detection delay time
(tIOV) change with the external capacitor C3. Refer to the “Electrical Characteristics”.
*3 When the resistor R3 is set less than 300Ω 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.
DS9232 Ver1.1
Feb. 2007
4
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芯美电子
EUP9232
Product name list
Overcharge
detection
voltage1,2
[VCU1,VCU2]
Overcharge
release
voltage 1,2
[VCD1,VCD2]
Overdischarge
detection
voltage 1,2
[VDD1,VDD2]
Overdischarge
release voltage
1,2 [VDU1,VDU2]
Overcurrent
detection
voltage 1
[VIOV1]
Overcharge
Detection
delay time
[tCU]
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
EUP9232AD
4.30 V
4.05 V
2.4 V
3.0 V
0.21 V
1.0 s
1.0 s
Available
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
Model / No.
Note: It is possible to change the detection voltages of the product other than above. For details, please contact our sales office.
Detection Voltage
Symbol
Selection range
Overcharge detection voltage 1,2
VCU1,2
Overcharge release voltage 1,2
VCD1,2
3.9
4
4.05
4.15
Overdischarge detection voltage 1,2
VDD1,2
2
2.2
2.3
2.4
Overdischarge release voltage 1,2
VDU1,2
2.5
2.8
2.9
3
Overcurrent detection voltage 1
VIOV1
0.095
0.15
0.21
0.3
Function
0V battery charge function
DS9232 Ver1.1
Feb. 2007
4.25
4.28
4.3
4.325
Unit
Selection
Available
Unavailable
5
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4.35
V
芯美电子
EUP9232
Electrical Characteristics (1) Except detection delay time (25°C)
Symbol
Parameter
Condition
Min
Overcharge detection voltage 1,2
3.90 to 4.60V
Adjustable
VCU1,2
-0.025
VCUaux1,2 Auxiliary overcharge detection voltage 1,2
VCU1,2 × 1.25
× 1.21
3.60 to 4.60V
Adjustable
1.70 to 2.60V
Adjustable
1.70 to 3.80V
Adjustable
0.07 to 0.03V
Adjustable
VCD1,2
-0.050
VDD1,2
-0.080
VDU1,2
-0.100
V IOV1
-0.020
(Ta=25°C unless otherwise specified)
Test
Test
Typ Max
Unit Condition
Circuit
Detection Voltage
VCU1,2
VCD1,2
Overcharge release voltage 1,2
VDD1,2
Overdischarge detection voltage 1,2
VDU1,2
Overdischarge release voltage 1,2
VIOV1
Overcurrent detection voltage1
VIOV2
Load short circuit
Overcurrent detection voltage 2
Temperature coefficient 1 for detection
Ta= -40 to +85°C
voltage *1
Temperature coefficient 2 for detection
Ta= -40 to +85°C
voltage *2
TCOE1
TCOE2
VCU1,2
VCU1,2
VCU1,2
+0.025
VCU1,2 VCU1,2
× 1.25 × 1.29
VCD1,2
VCD1,2
+0.050
VDD1,2
VDD1,2
+0.080
VDU1,2
VDU1,2
+0.100
V IOV1
V IOV1
+0.020
V
1,2
1
V
1,2
1
V
1,2
1
V
1,2
1
V
1,2
1
V
3
1
0.9
1.3
V
3
1
-0.6
0
0.6
mV/°C
---
---
-0.24
-0.05
0
mV/°C
---
---
0.5
Delay Time (C3=0.22µF)
tCU1,2
Overcharge detection delay time 1,2
1.0s
0.7
1.00
1.4
s
8,9
5
tDD1,2
Overdischarge detection delay time1,2
0.1s
68
100
138
ms
8,9
5
tIOV1
Overcurrent detection delay time 1
0.01s
6.7
10
13.9
ms
10
5
tIOV2
Overcuttent detection delay time 2
-
-
220
-
us
14
1
Input Voltage, Operation Voltage
VDSOP1
VDSOP2
Operation voltage between VCC and
VSS
Operation voltage between VCC and
VM *3
Internal circuit
operating voltage
Internal circuit
operating voltage
2.0
---
16
V
---
---
2.0
---
28
V
---
---
V1=V2=3.6V
-
5
10
µA
4
2
V1=V2=1.5V
-
-
0.1
µA
4
2
VCC
V
6
3
VSS
+0.05
V
6
3
VCC
V
7
4
VSS
+0.05
V
7
4
Current Consumption
IOPE
Current consumption
operation
during normal
IPDN
Current consumption at power down
Output Voltage
VDO(H)
DO voltage “H”
IOUT=10µA
VCC
-0.05
VDO(L)
DO voltage “L”
IOUT=10µA
VSS
VCO(H)
CO voltage “H”
IOUT=10µA
VCC
-0.15
VCO(L)
CO voltage “L”
IOUT=10µA
VSS
VCC
-0.003
VSS
+0.003
VCC
-0.019
VSS
+0.003
Internal Resistance
RVCM
Resistance between VCC and VM
V1=V2=1.5V
VVM=0V
100
300
900
kΩ
5
2
RVSM
Resistance between VSS and VM
V1=V2=3.5V
VVM=1.0V
50
100
170
kΩ
5
2
DS9232 Ver1.1
Feb. 2007
6
联系电话：１５９９９６４４５７９　８３１５１７１５
芯美电子
EUP9232
Electrical Characteristics (1) Except detection delay time (25°C)
(Ta=25°C unless otherwise specified)
Symbol
Parameter
Condition
Min
Typ
Max
Unit
Test
Test
Condition Circuit
0V Battery Charging Function
V0CHA
V0INH1,2
0V battery charge starting charger
voltage
0V battery charging
function “available”
0.38
0.75
1.12
V
11
6
0V battery charge
voltage 1,2
0V battery charging
function
“unavailable”
0.32
0.88
1.44
V
12,13
6
inhibition battery
*1. Temperature coefficient 1 for detection voltage should be applied to overcharge detection voltage, overcharge release voltage,
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 (2) Except detection delay time (-20°C to +70°C)
Symbol
Parameter
Condition
(Ta= -20°C to +70°C unless otherwise specified)
Test
Test
Min
Typ Max
Unit Condition
Circuit
Detection Voltage
Overcharge detection voltage 1,2
3.90 to 4.60V
Adjustable
VCU1,2
-0.045
VCUaux1,2 Auxiliary overcharge detection voltage 1,2
VCU1,2 × 1.25
× 1.19
3.60 to 4.60V
Adjustable
1.70 to 2.60V
Adjustable
1.70 to 3.80V
Adjustable
0.07 to 0.03V
Adjustable
VCD1,2
-0.070
VDD1,2
-0.100
VDU1,2
-0.120
V IOV1
-0.029
VCU1,2
VCD1,2
Overcharge release voltage 1,2
VDD1,2
Overdischarge detection voltage 1,2
VDU1,2
Overdischarge release voltage 1,2
VIOV1
Overcurrent detection voltage1
VIOV2
Load short circuit
Overcurrent detection voltage 2
Temperature coefficient 1 for detection
Ta= -40 to +85°C
voltage *1
Temperature coefficient 2 for detection
Ta= -40 to +85°C
voltage *2
TCOE1
TCOE2
VCU1,2
VCU1,2
+0.040
VCU1,2 VCU1,2
× 1.25 × 1.31
VCD1,2
VCD1,2
+0.065
VDD1,2
VDD1,2
+0.095
VDU1,2
VDU1,2
+0.115
V IOV1
V IOV1
+0.029
VCU1,2
V
1,2
1
V
1,2
1
V
1,2
1
V
1,2
1
V
1,2
1
V
3
1
0.45
0.9
1.35
V
3
1
-0.6
0
0.6
mV/°C
---
---
-0.24
-0.05
0
mV/°C
---
---
Delay Time (C3=0.22µF)
tCU1,2
Overcharge detection delay time 1,2
1.0s
0.6
1.00
1.84
s
8,9
5
tDD1,2
Overdischarge detection delay time1,2
0.1s
67
100
140
ms
8,9
5
tIOV1
Overcurrent detection delay time 1
0.01s
6.5
10
14.5
ms
10
5
tIOV2
Overcuttent detection delay time 2
-
-
220
-
us
14
1
2.0
---
16
V
---
---
2.0
---
28
V
---
---
Input Voltage, Operation Voltage
VDSOP1
VDSOP2
Operation voltage between VCC and
VSS
Operation voltage between VCC and
VM *3
DS9232 Ver1.1
Feb. 2007
Internal circuit
operating voltage
Internal circuit
operating voltage
7
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芯美电子
EUP9232
Electrical Characteristics (2) Except detection delay time (-20°C to +70°C)
(Ta= -20°C to +70°C unless otherwise specified)
Current Consumption
IOPE
Current consumption
operation
during normal
IPDN
Current consumption at power down
V1=V2=3.6V
-
5
11
µA
4
2
V1=V2=1.5V
-
-
0.1
µA
4
2
VCC
V
6
3
VSS
+0.14
V
6
3
VCC
V
7
4
VSS
+0.14
V
7
4
Output Voltage
VDO(H)
DO voltage “H”
IOUT=10µA
VCC
-0.14
VDO(L)
DO voltage “L”
IOUT=10µA
VSS
VCO(H)
CO voltage “H”
IOUT=10µA
VCC
-0.24
VCO(L)
CO voltage “L”
IOUT=10µA
VSS
VCC
-0.003
VSS
+0.003
VCC
-0.019
VSS
+0.003
83
300
1200
kΩ
5
2
40
100
190
kΩ
5
2
Internal Resistance
RVCM
Resistance between VCC and VM
RVSM
Resistance between VSS and VM
V1=V2=1.5V
VVM=0V
V1=V2=3.5V
VVM=1.0V
0V Battery Charging Function
V0CHA
V0INH1,2
0V battery charge starting charger
voltage
0V battery charging
function “available”
0.29
0.75
1.21
V
11
6
0V battery charge
voltage 1,2
0V battery charging
function
“unavailable”
0.23
0.88
1.53
V
12,13
6
inhibition battery
*1. Temperature coefficient 1 for detection voltage should be applied to overcharge detection voltage, overcharge release voltage,
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 (-40°C to +85°C)
Symbol
Parameter
Condition
(Ta= -40°C to +85°C unless otherwise specified)
Test
Test
Min
Typ Max
Unit Condition
Circuit
Detection Voltage
Overcharge detection voltage 1,2
3.90 to 4.60V
Adjustable
VCU1,2
-0.055
VCUaux1,2 Auxiliary overcharge detection voltage 1,2
VCU1,2 × 1.25
× 1.19
3.60 to 4.60V
Adjustable
1.70 to 2.60V
Adjustable
1.70 to 3.80V
Adjustable
0.07 to 0.03V
Adjustable
VCD1,2
-0.080
VDD1,2
-0.110
VDU1,2
-0.130
V IOV1
-0.033
VCU1,2
VCD1,2
Overcharge release voltage 1,2
VDD1,2
Overdischarge detection voltage 1,2
VDU1,2
Overdischarge release voltage 1,2
VIOV1
Overcurrent detection voltage1
VIOV2
Load short circuit
Overcurrent detection voltage 2
Temperature coefficient 1 for detection
Ta= -40 to +85°C
voltage *1
Temperature coefficient 2 for detection
Ta= -40 to +85°C
voltage *2
TCOE1
TCOE2
DS9232 Ver1.1
Feb. 2007
VCU1,2
VCU1,2
VCU1,2
+0.045
VCU1,2 VCU1,2
× 1.25 × 1.31
VCD1,2
VCD1,2
+0.070
VDD1,2
VDD1,2
+0.100
VDU1,2
VDU1,2
+0.120
V IOV1
V IOV1
+0.033
V
1,2
1
V
1,2
1
V
1,2
1
V
1,2
1
V
1,2
1
V
3
1
0.4
0.9
1.4
V
3
1
-0.6
0
0.6
mV/°C
---
---
-0.24
-0.05
0
mV/°C
---
---
8
联系电话：１５９９９６４４５７９　８３１５１７１５
芯美电子
EUP9232
Electrical Characteristics (3) Except detection delay time (-40°C to +85°C)
(Ta= -40°C to +85°C unless otherwise specified)
Delay Time (C3=0.22µF)
tCU1,2
Overcharge detection delay time 1,2
1.0s
0.55
1.00
2.06
s
8,9
5
tDD1,2
Overdischarge detection delay time1,2
0.1s
67
100
141
ms
8,9
5
tIOV1
Overcurrent detection delay time 1
0.01s
6.3
10
14.7
ms
10
5
tIOV2
Overcuttent detection delay time 2
-
-
220
-
us
14
1
Input Voltage, Operation Voltage
VDSOP1
VDSOP2
Operation voltage between VCC and
VSS
Operation voltage between VCC and
VM *3
Internal circuit
operating voltage
Internal circuit
operating voltage
2.0
---
16
V
---
---
2.0
---
28
V
---
---
V1=V2=3.6V
-
5
12
µA
4
2
V1=V2=1.5V
-
-
0.1
µA
4
2
VCC
V
6
3
VSS
+0.17
V
6
3
VCC
V
7
4
VSS
+0.17
V
7
4
Current Consumption
IOPE
Current consumption
operation
during normal
IPDN
Current consumption at power down
Output Voltage
VDO(H)
DO voltage “H”
IOUT=10µA
VCC
-0.17
VDO(L)
DO voltage “L”
IOUT=10µA
VSS
VCO(H)
CO voltage “H”
IOUT=10µA
VCC
-0.27
VCO(L)
CO voltage “L”
IOUT=10µA
VSS
VCC
-0.003
VSS
+0.003
VCC
-0.019
VSS
+0.003
Internal Resistance
RVCM
Resistance between VCC and VM
V1=V2=1.5V
VVM=0V
78
300
1310
kΩ
5
2
RVSM
Resistance between VSS and VM
V1=V2=3.5V
VVM=1.0V
30
100
200
kΩ
5
2
0V Battery Charging Function
V0CHA
V0INH1,2
0V battery charge starting charger
voltage
0V battery charging
function “available”
0.26
0.75
1.25
V
11
6
0V battery charge
voltage 1,2
0V battery charging
function
“unavailable”
0.2
0.88
1.57
V
12,13
6
inhibition battery
*1. Temperature coefficient 1 for detection voltage should be applied to overcharge detection voltage, overcharge release voltage,
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.
DS9232 Ver1.1
Feb. 2007
9
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TEST Circuits
(6) Test Condition 6, Test Circuit 3
(1) Test Condition 1, Test Circuit 1
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=10µA is DO voltage “H” (VDOH).
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 (VCU1). Decrease V1 gradually. The V1
voltage when CO = “H” is overcharge release voltage
1(VCD1). Further decrease V1. The V1 voltage when
DO= “L” is overdischarge voltage 1(VDD1). Increase V1
gradually. The V1 voltage when DO = “H” is
overdischarge release voltage 1 (VDU1). 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 (VCUaux1).
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=10µA is DO voltage
“L” (VDOL).
(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=10µA is the CO “H” voltage
(VCOH).
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=10µA is CO voltage
“L” (VCOL).
(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 (VCU2). Decrease V2 gradually. The V2 voltage when
CO = “H” is overcharge release voltage 2(VCD2). Further
decrease V2. The V2 voltage when DO= “L” is
overdischarge voltage 2(VDD2). Increase V2 gradually.
The V2 voltage when DO = “H” is overdischarge release
voltage 2 (VDU2). 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 (VCUaux2).
(8) Test Condition 8, Test Circuit 5
Set V1=V2=3.6V and V3=0V under normal condition.
Increase V1 from (VCU1-0.2V) to (VCU1+0.2V)
immediately (within 10µs). The time after V1 becomes
(VCU1+0.2V) until CO goes “L” is the overcharge
detection delay time 1 (tCU1).
Set V1=V2=3.5V and V3=0V under normal condition.
Decrease V1 from (VDD1+0.2V) to (VDD1-0.2V)
immediately (within 10µs). The time after V1 becomes
(VDD1-0.2V) until DO goes “L” is the overcharge
detection delay time 1 (tDD1).
(3) Test Condition 3, Test Circuit 1
(9) Test Condition 9, Test Circuit 5
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 (VIOV1). 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 (VIOV2).
Set V1=V2=3.6V and V3=0V under normal condition.
Increase V2 from (VCU2-0.2V) to (VCU2+0.2V)
immediately (within 10µs). The time after V2 becomes
(VCU2+0.2V) until CO goes “L” is the overcharge
detection delay time 2 (tCU2).
Set V1=V2=3.6V and V3=0V under normal condition.
Decrease V2 from (VDD2+0.2V) to (VDD2-0.2V)
immediately (within 10µs). The time after V2 becomes
(VDD2-0.2V) until DO goes “L” is the overcharge
detection delay time 2 (tDD2).
(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 (IOPE). Set S1 =OFF, V1 =V2 =1.5V under
overdischarge condition and measure current
consumption. Current consumption I1 is the
power-down current consumption (IPDN).
(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 10µs).
The time after V3 becomes 0.5V until DO goes “L” is
the overcurrent detection delay time 1(tI0V1).
(5) Test Condition 5, Test Circuit 2
(11) Test Condition 11, Test Circuit 6
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).
DS9232 Ver1.1
Feb. 2007
Set V1=V2=0V and V3=2V,and decrease V3 gradually.
The V3 voltage when CO=”L”(VCC-0.3V or lower) is the
0V charge starting voltage (V0CHA).
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(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” (VVM+0.3V or
higher) is the 0V charge inhibiting voltage 1(V0INH1).
(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” (VVM+0.3V or
higher) is the 0V charge inhibiting voltage 2(V0INH2).
(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 ( tIOV2 ).
DS9232 Ver1.1
Feb. 2007
11
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Test Circuit
Test Circuit 1
Test t Circuit 2
Test Circuit 3
Test Circuit 4
Test Circuit 5
DS9232 Ver1.1
Feb. 2007
Test Circuit 6
12
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Typical Characteristics
Overcharge detection voltage1 vs.
temperature
4.34
Overcharge detection voltage2 vs.
temperature
4.34
4.32
4.32
4.30
4.30
VCU2 (V)
VCU1 (V)
1. Detection Voltage Temperature Characteristics
4.28
4.26
4.24
4.28
4.26
4.24
4.22
-40
-20
0
20
40
60
4.22
-40
80
-20
0
20
Ta(°C)
Ta(°C)
Figure3.
Overcharge release voltage1 vs.
temperature
3.96
3.94
3.94
3.92
3.92
3.90
3.88
3.86
-20
0
20
40
60
3.90
3.88
-20
0
20
Ta(°C)
40
60
Figure5.
Figure6.
Auxiliary overcharge detection
voltage1 vs. temperature
Auxiliary overcharge detection
voltage2 vs.temperature
5.41
5.39
5.39
5.37
5.37
VCUaux2 (V)
VCUaux1 (V)
Overcharge release voltage2 vs.
temperature
3.84
-40
80
Ta(°C)
5.35
5.33
5.31
5.29
-40
-20
0
20
40
60
Figure7.
Feb. 2007
80
5.35
5.33
5.31
5.29
-40
80
Ta(°C)
DS9232 Ver1.1
80
3.86
3.84
-40
5.41
60
Figure4.
VCD2 (V)
VCD1 (V)
3.96
40
-20
0
20
Ta(°C)
40
60
Figure8.
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80
EUP9232
Overdischarge detection voltage2 vs.
temperature
Overdischarge detection voltage1 vs.
temperature
2.06
2.06
2.04
2.04
2.02
2.02
VDD2 (V)
VDD1 (V)
芯美电子
2.00
1.98
1.96
2.00
1.98
1.96
1.94
-40
-20
0
20
40
60
1.94
-40
80
-20
0
20
Ta(°C)
Figure 9.
2.56
2.56
2.54
2.54
2.52
2.52
VDU2 (V)
VDU1 (V)
80
Overdischarge release voltage2 vs.
temperature
2.50
2.48
2.46
2.50
2.48
2.46
2.44
-40
-20
0
20
40
60
2.44
-40
80
-20
0
Figure11.
60
80
Overcurrent detection voltage2 vs.
temperature
1.3
0.140
1.2
0.125
1.1
VIOV2 (V)
0.110
0.095
0.080
0.065
1.0
0.9
0.8
0.7
0.6
-20
0
20
40
60
0.5
-40
80
Ta(°C)
Figure13.
Feb. 2007
40
Figure12.
Overcurrent detection voltage1 vs.
temperature
0.050
-40
20
Ta(°C)
Ta(°C)
VIOV1 (V)
60
Figure10.
Overdischarge release voltage1 vs.
temperature
DS9232 Ver1.1
40
Ta(°C)
-20
0
20
Ta(°C)
40
60
80
Figure14.
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2. Current Consumption Temperature Characteristics
Current consumption vs. temperature
in power-down mode
120
Current consumption vs. temperature
in normal mode
10.0
100
80
IPDN (nA)
IOPE (µA)
7.5
5.0
2.5
60
40
20
0.0
-40
-20
0
20
40
60
0
-40
80
-20
0
Ta(°C)
20
40
60
80
Ta(°C)
Figure15.
Figure16.
3. Delay Time Temperature Characteristics
1.6
Overcharge detection time vs.
tempature
160
140
TDD (ms)
1.4
TCU (s)
1.2
1.0
100
60
0.6
-20
0
20
Ta(°C)
40
60
40
-40
80
Figure17.
16
120
80
0.8
0.4
-40
Overdischarge detection time vs.
tempature
-20
0
20
Ta(°C)
40
60
Figure18.
Overcurrent detection1 time vs.
tempature
TIOV1 (ms)
14
12
10
8
6
4
-40
-20
0
20
40
60
80
Ta(°C)
Figure19.
DS9232 Ver1.1
Feb. 2007
15
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80
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EUP9232
Description of Operation
Normal Condition *1
The overcharge condition is release in two cases:
This IC monitors the voltages of the two serially
connected batteries and the discharge current to
control charging and discharging. When the
voltages of two batteries are in the range from the
overdischarge detection voltage (VDD1,2) to the
overcharge detection voltage (VCU1,2), 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) , the charging and discharging
FETs are turned on. In this condition, charging and
discharging can be carried out freely. This
condition is called normal condition.
(1)The battery voltage which exceeded the
overcharge detection voltage (VCU1,2) falls below
the overcharge release voltage (VCD1, 2), the
charging FET turns on and the normal condition
returns.
(2)If the battery voltage which exceeded the
overcharge detection voltage (VCU1, 2) is equal or
higher than the overcharge release voltage
(VCD1,2), but the charger is removed, a load is
placed, and discharging starts, 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 immediately 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 voltage 1 or higher), releases
the overcharge condition and returns to the normal
condition.
Overcurrent Condition
When the discharging current becomes equal to or
higher than a specified value (the VM pin voltage is
equal to or higher than the overcurrent detection
voltage) during discharging under normal condition
and it continues for the overcurrent detection delay
time (tIOV) 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 VCC potential.
Overdischarge Condition
If any one of the battery voltages falls below the
overdischarge detection voltage (VDD1,2) during
discharging under normal condition and it continues
for the overdischarge detection delay time (tDD1, 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 current consumption falls
below the power-down current consumption (IPDN).
This condition is called the power-down condition.
The VM and VCC pins are shorted by the Rvcm
resistor under the overdischarge and power-down
conditions.
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 kΩ or
higher. When the load is released, the VM pin, which
is shorted to the VSS pin with the Rvsm resistor,
goes back to the VSS potential. The IC detects that
the VM pin potential returns to overcurrent detection
voltage 1 (VIOV1) or lower and returns to the normal
condition.
Overcharge Condition
Following two cases are detected as overcharge
conditions:
The power-down condition is canceled when the
charger is connected and 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 (VDU1,2) in this condition, the overdischarge
condition changes to the normal condition.
(1) If one of the battery voltages becomes higher
than the overcharge detection voltage (VCU1,2)
during charging under normal condition and it
continues for the overcharge detection delay time
(tCU1,2) or longer, the charging FET turns off to
stop charging.
(2) If one of the battery voltages becomes higher
than the auxiliary overcharge detection voltage
(VCUaux1, 2) the charging FET turns off immediately
to stop charging.
The auxiliary overcharge detection voltages
(VCUaux1,2) are correlated with the overcharge
detection voltages (VCU1,2) and are defined by
following equation:
VCUaux1,2 [V]=1.25 × VCU1,2
DS9232 Ver1.1
Feb. 2007
16
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Delay Circuits
0V Battery Charge Inhibiting Function *2
The overcharge detection delay time (tCU1,2), the
overdischarge detection delay time (tDD1,2), and
the overcurrent detection delay time1 (tI0V1) change
with an external capacitor (C3). Since one
capacitor determine each delay time, delay times
are correlated by the following ratio:
This function is used for inhibiting charging when
either of the connected batteries goes 0V due to its
self-discharge. When the voltage of either of the
connected batteries goes below 0 V charge inhibit
voltage 1 and 2 (VOINH1,2), the charging FET gate
is fixed to "EB-" to inhibit charging. Charging is
possible only when the voltage of both connected
batteries goes 0V charge inhibit voltage 1 and
2 (VOINH1, 2) or more. Note that charging may be
possible when the total voltage of both connected
batteries is less than the minimum value (VDSOPmin)
of the operating voltage between VCC and VSS
even if the voltage of either of the connected
batteries is 0 V charge inhibit voltage 1 and 2
(V0INH1, 2) or less. Charging is prohibited when the
total voltage of both connected batteries reaches
the minimum value (VDSOPmin) of the operating
voltage between VCC and VSS.
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℃)
Overcharge detection delay
time tCU [s] = Delay factor
Min.
Typ.
Max.
(2.5,
4.545,
9.364) × C3 [µF]
0.4545,
0.6409)
Overdischarge detection delay
time tDD [s] = Delay factor
(0.3045,
Overcurrent detection delay
time tIOV1 [s] = Delay factor
(0.02864, 0.04545, 0.06682)
× C3 [µF]
× C3 [µF]
Remark The delay time for overcurrent detection 2
is fixed by an internal circuit. The delay time cannot
be changed via an external capacitor.
*1. When initially connecting batteries, the IC may fail to
enter the normal condition (discharging ready state).If so,
once set the VM pin to VSS voltage (short pins VM and
VSS or connect a charger).
0V Battery Charging Function *2
This function is used to recharge both of two
serially-connected batteries after they selfdischarge to 0V. When the 0V charging start
voltage (V0CHA) or higher is applied to between VM
and VCC by connecting the charger, the charging
FET gate is fixed to VCC potential.
*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.
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 (VDU1, 2), the normal
condition returns.
DS9232 Ver1.1
Feb. 2007
17
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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.
DS9232 Ver1.1
Feb. 2007
18
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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.
DS9232 Ver1.1
Feb. 2007
19
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Package Information
TSSOP-8
SYMBOLS
A
A1
b
D
E
E1
e
L
DS9232 Ver1.1
Feb. 2007
MILLIMETERS
MIN.
MAX.
1.20
0.00
0.15
0.19
0.30
3.00
6.20
6.60
4.40
0.65
0.45
0.75
INCHES
MIN.
MAX.
0.048
0.000
0.006
0.007
0.012
0.118
0.244
0.260
0.173
0.026
0.018
0.030
20
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