FS3332-DS

FS3332-DS
FS3332-DS-13_EN
May 2014
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REV. 1.3
Datasheet
FS3332
Two Cell Lithium-ion/Polymer Battery Protection IC
Fortune Semiconductor Corporation
富晶電子股份有限公司
23F., No.29-5,Sec. 2, Zhongzheng E. Rd.,
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Danshui Town, Taipei County 251, Taiwan
Tel.:886-2-28094742
Fax:886-2-28094874
www.ic-fortune.com
This manual contains new product information. Fortune Semiconductor Corporation reserves the rights to
modify the product specification without further notice. No liability is assumed by Fortune Semiconductor
Corporation as a result of the use of this product. No rights under any patent accompany the sale of the
product.
1.
General Description
The FS3332 Series are protection ICs for
2-serial-cell lithium-ion/lithium-polymer rechargeable
batteries and include high-accuracy voltage
detectors and delay circuits.
Ordering Information
FS3332 x-P (P stands for Pb free)
Serial code *
*: Refer to the product name list on next page.
4.
Applications
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These ICs are suitable for protecting 2-cell
rechargeable lithium-ion/lithium-polymer battery
packs from overcharge, overdischarge, and
over-current
3.

2.















Features
Low supply current
Normal Operation : 7.5μ A typ. 14.2μ A max.
Power-down mode : 0.3μ A typ.
Overcharge detection voltage
﹝VOCU﹞
3.90V~4.60V, Accuracy of 25mV
Overcharge release voltage
﹝VOCR﹞
3.60V~4.60V, Accuracy of 50mV
Over-discharge detection voltage
﹝VODL﹞
1.70V~2.60V, Accuracy of 80mV
Over-discharge release voltage
﹝VODR﹞
1.70V~3.80V, Accuracy of 100mV
Over current detection voltage
﹝VOI1﹞
0.07V~0.30V, Accuracy of 20mV
Short circuit detection voltage
﹝VOI2﹞
Fixed at 1.0V
Delay times are set by an external capacitor. Each
delay time for Overcharge detection,
Over-discharge detection, Over-current detection
are “Proportion of hundred of ten to one”
Two over-current detection levels (protection for
short-circuit)
Internal auxiliary over voltage detection circuit
(Fail safe for over voltage)
High-withstanding-voltage devices Absolute
maximum rating: 18 V
Wide operating temperature range -40 to +85°C
Wide supply voltage range
2.0 ~ 16V
8-pin TSSOP Pb-free package

Protection IC for 2-Cell Lithium-Ion /
Lithium-Polymer Battery Pack
Portable DVD, DSC, PDA, etc.
5.
Product Name List
Model
Overcharge
detection
voltage
[VOCU] (V)
Overcharge
release
voltage
[VOCR] (V)
Over-discharge
detection
voltage
[VODL] (V)
Over-discharge
release
voltage
[VODR] (V)
Over-current 0 V Battery
Charging
detection
Function
voltage
[VOI1] (mV)
FS3332C
4.350±0.025
4.150±0.050
2.30±0.080
3.00±0.100
300±20
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No
6.
Pin Configuration
Pin No.
Symbol
Description
1
SENS
Detection pin for voltage between SENS and VC (Detection
for overcharge and over-discharge)
2
DO
FET gate connection pin for discharge control
3
CO
FET gate connection pin for charge control
4
VM
Input pin for current sense (Over-current detection pin)
5
VSS
Negative power input pin
6
ICT
Capacitor connection pin for detection delay
7
VC
Connection for negative voltage of battery 1 and
8
VDD
positive voltage of battery 2
Positive power input pin
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7.
Functional Block Diagram
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8.
Typical Application Circuit
Figure 2
9.
Absolute Maximum Ratings
(VSS=0V, Ta=25°C unless otherwise specified)
Item
Symbol
Rating
Unit
VDD
VSS-0.3 to VSS +18
V
SENS input pin voltage
VSENS
VSS -0.3 to VDD +0.3
V
ICT input pin voltage
VICT
VSS -0.3 to VDD +0.3
V
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Input voltage between VDD and VSS *
CO output pin voltage
DO output pin voltage
VM input pin voltage
VC input pin voltage
Power dissipation
Operating Temperature Range
VCO
VDO
VVM
VVC
PD
TOP
VVM -0.3 to VDD +0.3
VSS -0.3 to VDD +0.3
VDD -18 to VDD +0.3
VSS -0.3 to VDD +0.3
300
-40 to +85
V
V
V
V
mW
°C
Storage Temperature Range
TST
-40 to +125
°C
Note: FS3332 contains a circuit that will protect it from static discharge; but please take special care
that no excessive static electricity or voltage which exceeds the limit of the protection circuit
will be applied to it.
* Pulse (μsec) noise exceeding the above input voltage (VSS +12V) may cause damage to
the IC.
10. Electrical Characteristics
SYMBOL
Min
IDD
IPD
VDS1
Typ
Max
UNIT
7.5
0.3
12.7
0.6
μA
μA
16
V
2.0
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(Vss=0V, Ta=25°C unless otherwise specified)
PARAMETER
CONDITIONS
CURRENT CONSUMPTION
Supply Current
VDD=7V(2*3.5V)
Power-Down Current
VDD=4.0V(2*2V)
OPERATING VOLTAGE
Operating input voltage
VDD-VSS
DETECTION VOLTAGE
Overcharge detection voltage
Auxiliary overcharge detection
Voltage 1,2
Overcharge release voltage
Over-discharge detection voltage
Over-discharge release voltage
Over current detection voltage 1
Over current detection voltage 2
VSS reference
DELAY TIME(C3=0.22μF)
Overcharge detection delay time
Over-discharge detection delay time
Over current detection delay time
OTHER
CO pin output “H” voltage
DO pin output “H” voltage
DO pin output “L” voltage
Resistance between VSS and CO
Resistance between VDD and VM
Resistance between VSS and VM
0 V battery charge starting voltage
VOCU
-0.025
VOCU*
VCUAUX1,2
1.21
VOCR
VOCR
-0.050
VODL
VODL
-0.080
VODR
VODR
-0.100
VOI1
VOI1
-0.020
VOI2
0.5
1.0
VOCU
+0.025
VOCU*
1.29
VOCR
+0.050
VODL
+0.080
VODR
+0.100
VOI1
+0.020
1.5
TOC
TOD
TOI1
1.00
100
10
138
13.9
Voh1
Voh2
Vol2
RCOL
RVMD
RVSM
V0CHA
VDD-0.15 VDD-0.019
VDD
VDD-0.05 VDD-0.003
VDD
VSS
VSS+0.003 VSS+0.05
0.29
0.6
1.44
105
240
575
511
597
977
No
VOCU
VOCU
VOCU*
1.25
VOCR
VODL
VODR
VOI1
V
V
V
V
V
V
s
ms
ms
V
V
V
MΩ
kΩ
kΩ
V
(Vss=0V, Ta=-40°C ~ +85°C unless otherwise specified)
PARAMETER
CONDITIONS
SYMBOL
CURRENT CONSUMPTION
Supply Current
VDD=7V(2*3.5V)
IDD
Power-Down Current
VDD=4.0V(2*2V)
IPD
OPERATING VOLTAGE
Operating input voltage
VDD-VSS
VDS1
DETECTION VOLTAGE
Overcharge detection voltage
Typ
Max
UNIT
7.5
0.3
14.2
1.0
μA
μA
16
V
2.0
VOCU
-0.055
VOCU*
VCUAUX1,2
1.19
VOCR
VOCR
-0.080
VODL
VODL
-0.110
VODR
VODR
-0.130
VOI1
VOI1
-0.033
VOI2
0.4
VOCU
1.0
VOCU
+0.045
VOCU*
1.31
VOCR
+0.070
VODL
+0.100
VODR
+0.120
VOI1
+0.033
1.6
1.00
100
10
141
14.7
VOCU
VOCU*
1.25
V
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Auxiliary overcharge detection
Voltage 1,2
Min
Overcharge release voltage
Over-discharge detection voltage
Over-discharge release voltage
Over current detection voltage 1
Over current detection voltage 2
VSS reference
DELAY TIME(C3=0.22μF)
Overcharge detection delay time
Over-discharge detection delay time
Over current detection delay time
OTHER
CO pin output “H” voltage
DO pin output “H” voltage
DO pin output “L” voltage
Resistance between VSS and CO
Resistance between VDD and VM
Resistance between VSS and VM
0 V battery charge starting voltage
TOC
TOD
TOI1
Voh1
Voh2
Vol2
RCOL
RVMD
RVSM
V0CHA
67
6.3
VOCR
VODL
VODR
VOI1
VDD-0.27 VDD-0.019
VDD
VDD-0.17 VDD-0.003
VDD
VSS
VSS+0.003 VSS+0.17
0.22
0.6
2.20
79
240
878
387
597
1491
No
V
V
V
V
V
s
ms
ms
V
V
V
MΩ
kΩ
kΩ
V
11. Measurement Circuits
Measurement 1 Measurement Circuit 1
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Set S1=OFF, V1=V2=3.6V, and V3=0V 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 (VCR1). Further decrease V1. The V1 voltage when DO =
'L' is overdischarge detection voltage 1 (VDL1). Increase V1 gradually. The V1 voltage when DO = 'H' is
overdischarge release voltage 1 (VDR1). Set S1=ON, and V1=V2=3.6V and V3=0V under normal
condition. Increase V1 from 3.6V gradually. The V1 voltage when CO = 'L' is auxiliary overcharge
detection voltage 1 (VCUaux1).
Measurement 2 Measurement Circuit 1
Set S1=OFF, V1=V2=3.6V, 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 (VCR2). Further decrease V2. The V2 voltage when DO =
'L' is overdischarge voltage 2 (VDL2). Increase V2 gradually. The V2 voltage when DO = 'H' is
overdischarge release voltage 2 (VDR2). Set S1=ON, and V1=V2=3.6V and V3=0V under normal
condition. Increase V2 from 3.6V gradually. The V2 voltage when CO = 'L' is auxiliary overcharge
detection voltage 2 (VCUaux2).
Measurement 3 Measurement Circuit 1
Set S1=OFF, V1=V2=3.6V, 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. (The voltage change rate < 1.0V/ms) (V1+V2-V3)
voltage when DO = 'L' is overcurrent detection voltage 2 (VIOV2).
Measurement 4 Measurement Circuit 2
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Set S1=ON, V1=V2=3.6V, and V3=0V under normal condition and measure current consumption. Current
consumption I1 is the normal condition current consumption (IDD). Set S1=OFF, V1=V2=1.5V under
overdischarge condition and measure current consumption. Current consumption I1 is the power-down
current consumption (IPD).
Measurement 5 Measurement Circuit 2
Set S1=ON, V1=V2=V3=1.5V, and V3=2.5V under overdischarge condition. (V1+V2-V3)/I2 is the internal
resistance between VCC and VM (RVMD). Set S1=ON, V1=V2=3.5V, and V3=1.1V under overcurrent
condition. V3/I2 is the internal resistance between VSS and VM (RVSM).
Measurement 6 Measurement Circuit 3
Set S1=ON, S2=OFF, V1=V2=3.6V, and V3=0V under normal condition. Increase V4 from 0V gradually.
The V4 voltage when I1 = 10µA is DO 'H' voltage (Voh2). Set S1=OFF, S2=ON, V1=V2=3.6V, and
V3=0.5V under overcurrent condition. Increase V5 from 0V gradually. The V5 voltage when I2 = 10 µA is
the DO 'L' voltage (Vol2).
Measurement 7 Measurement Circuit 4
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Set S1=ON, S2=OFF, V1=V2=3.6V and V3=0V under normal condition. Increase V4 from 0V gradually.
The V4 voltage when I1 = 10µA is the CO 'H' voltage (Voh1). Set S1=OFF S2=ON, V1=V2=4.7V, V3=0V,
and V4=9.4V under over voltage condition. (V5)/I2 is the CO pin internal resistance (RCOL).
Measurement 8 Measurement 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
(VDL1+0.2V) to (VDL1-0.2V) immediately (within 10µs). The time after V1 becomes (VDL1-0.2V) until DO
goes 'L' is the overdischarge detection delay time 1 (tDL1).
Measurement 9 Measurement Circuit 5
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
(VDL2+0.2V) to (VDL2-0.2V) immediately (within 10µs). The time after V2 becomes (VDL2-0.2V) until DO
goes 'L' is the overdischarge detection delay time 2 (tDL2).
Measurement 10 Measurement 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 (tIOV1).
Measurement 11 Measurement Circuit 6
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Set V1=V2=0V, and V3=2V, and decrease V3 gradually. The V3 voltage when CO = 'L' (VDD-0.3V or
lower) is the 0V charge starting voltage (V0CHA).
12. Description of Operation
Normal Condition
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This IC monitors the voltage of the battery connected
between the VDD and VSS pins and the voltage
difference between the VM and VSS pins to control
charging and discharging. When the voltages of two
batteries are in the range from over-discharge
detection voltage (VDL1,2) to overcharge detection
voltage (VCU1,2), and the VM pin voltage is in the
range from the charger detection voltage (VCHA) to
over-current detection voltage 1 (VIOV1), the IC
turns both the charging and discharging control FETs
on. This condition is called the normal status, and in
this condition charging and discharging can be
carried out freely. The VM and VSS pins are shorted
by the RVSM resistor in this condition.
discharging current flows through the parasitic
diode in the charging control FET. At this
moment the VM pin potential becomes Vf, the
voltage for the parasitic diode, higher than the
VSS level. When the battery voltage goes
under overcharge detection voltage (VCU1,2)
and provided that the VM pin voltage is higher
than over-current detection voltage 1, the IC
releases the overcharge status and returns to
the normal status.
Caution: When the battery is connected for the first
time, discharging may not be enabled. In this case,
short the VM and VSS pins or connect the charger to
restore the normal status.
Overcharge Condition
When one of the battery voltages becomes higher
than overcharge detection voltage (VCU1,2) during
charging in the normal status and detection
continues for the overcharge detection delay time
(tCU1,2) or longer, the charging control FET turns off
to stop charging. When one of the battery voltages
becomes higher than auxiliary overcharge detection
voltage (VCUAUX1,2), the charging control FET
turns off to stop charging, too. Both conditions are
called the overcharge status. The VM and VSS pins
are shorted by the RVSM resistor in this condition.
The overcharge status is released in the
following two cases (a and b).
a) The battery voltage which exceeded
overcharge detection voltage (VCU1,2) falls
below the overcharge release voltage
(VCR1,2), the charging control FET turns on
and returns to the normal status.
b) The battery voltage which exceeded
overcharge detection voltage (VCU1,2) is
equal to or higher than the overcharge release
voltage (VCR1,2), the charger is removed, a
load is connected and discharging starts, the
charging control FET turns on and returns to
the normal status. Just after the load is
connected and discharging starts, the
Over-discharge Condition
When one of the battery voltages falls below
over-discharge detection voltage (VDL1,2) during
discharging in the normal status and detection
continues for the over-discharge detection delay
time (tDL1,2) or longer, the discharging control FET
turns off to stop discharging. This condition is called
the over-discharge status. When the discharging
control FET is turned off, the VM pin voltage is pulled
up by the resistor between the VM and VDD pins in
the IC (RVMD). When the voltage difference
between the VM and VDD pins then is over-current
detection voltage 2 or lower, the current
consumption is reduced to the power-down current
consumption (IPDN). This condition is called the
power-down status. The power-down status is
released when a charger is connected and the
voltage difference between the VM and VDD pins is
over-current detection voltage 2 or higher. Moreover,
when all the battery voltages become over-discharge
detection voltage (VDL1,2) or higher, the discharging
FET turns on and returns to the normal status.
Over Current Condition
The overcharge detection delay time (tCU1,2), the
over-discharge detection delay time (tDL1,2), and
the over-current detection delay time 1 (tOI1) are set
via an external capacitor (C3). One capacitor
determines each delay time, and the delay times are
correlated by following ratio:
Overcharge delay time : Over-discharge
delay time : Over-current delay time = 100 :
10 : 1
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When a battery in the normal status is in the status
where the voltage of the VM pin is equal to or higher
than the over-current detection voltage because the
discharge current is higher than the specified value
and the status lasts for the over-current detection
delay time, the discharge control FET is turned off
and discharging is stopped. This status is called the
over-current status. In the over-current status, the
VM and VSS pins are shorted by the resistor
between VM and VSS (RVSM) in the IC. The
charging FET is also turned off. The voltage of the
VM pin is at the VDD potential as long as the load is
connected. When the load is disconnected, the VM
pin returns to the VSS potential. This IC detects the
status when the impedance between the EB
and EB(see typical application circuit)
increases and is equal to the impedance that
enables automatic restoration and the voltage at the
VM pin returns to over-current detection voltage 1
(VIOV1) or lower and the over-current status is
restored to the normal status.
Delay Circuits
Caution: The impedance that enables
automatic restoration varies
depending on the battery
voltage and the set value of
over-current detection voltage
1.
The delay times are calculated as follows:
Overcharge detection delay time
tCU [s] = delay factor 1 x C3 [μF]
Delay factor 1 = (2.500 min, 4.545 typ, 9.364
max)
Over-discharge detection delay time
tDL [s] = delay factor 2 x C3 [μF]
Delay factor 2 = (0.3045 min, 0.4545 typ,
0.6409 max)
Over-current detection delay time 1
tIOV1 [s] = delay factor 3 x C3 [μF]
Delay factor 3 = (0.02864 min, 0.04545 typ,
0.06682 max)
Note: The over-current detection delay
time 2 is fixed by internal circuit
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13. Timing Diagram
Overcharge detection
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Over-discharge detection
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Over-current detection
14. Typical Characteristics
Detection Voltage Temperature Characteristics
Over Charge Detection Voltage
OVERCHARGE VOLTAGE
SENS V
VC V
4.27
4.26
4.25
4.24
4.23
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Voltage(V)
4.3
4.29
4.28
4.22
4.21
4.2
-40 -30 -20 -10
0
10
20
30
40
50
60
70
80
Temperature(℃)
Over Charge Release Voltage
OVERCHARGE RELEASE
VOLTAGE
Voltage(V)
4.1
4.09
VOCR1 V
VOCR2 V
4.08
4.07
4.06
4.05
4.04
4.03
4.02
4.01
4
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
Temperature(℃)
Auxiliary Over Charge Detection Voltage
Auxiliary overcharge detection Voltage
Vcuaux1 V
Voltage(V)
Vcuaux2 V
5.34
5.32
5.3
5.28
5.26
5.24
5.22
5.2
5.18
5.16
5.14
5.12
-40 -30 -20 -10
0
10
20
30
Temperature(℃)
40
50
60
70
80
Over Dis-Charge Detection Voltage
OVERDISCHARGE VOLTAGE
VODL1 V
VODL2 V
Voltage(V)
2.45
2.44
2.43
2.42
2.41
2.4
2.39
2.38
2.37
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2.36
2.35
-40 -30 -20 -10
0
10
20
30
40
50
60
70
80
Temperature(℃)
Over Dis-Charge Release Voltage
OVERDISCHARGE RELEASE VOLTAGE
VODR1 V
VODR2 V
3.15
Voltage(V)
3.1
3.05
3
2.95
2.9
2.85
-40 -30 -20 -10
0
10
20
30
Temperature(℃)
40
50
60
70
80
Delay Time Temperature Characteristics
Over Charge Detection Delay Time
OVERCHARGE DELAY TIME
TOC mS
1500
1200
1100
1000
900
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TIME(mS)
1400
1300
800
700
600
500
-40 -30 -20 -10
0
10
20
30
40
50
60
70
80
Temperature(℃)
Over Dis-Charge Detection Delay Time
OVERDISCHARGE DELAY TIME
TOD mS
150
140
TIME(mS)
130
120
110
100
90
80
-40
-30 -20
-10
0
10
20
30
40
50
60
70
80
Temperature(℃)
Overcurrent1 Detection Delay Time
OVERCURRENT1 DELAY TIME
TOI1 mS
8
TIME(mS)
7.5
7
6.5
6
-40
-30
-20
-10
0
10
20
30
Temperature(℃)
40
50
60
70
80
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15. Package Outline
8-Pin TSSOP
16. Revision History
Date
Page
1.0
2007/01/08
-
New Release
Description
1.1
2009/06/03
8
Delete 0V Charge
1.2
2009/06/17
4
Delete FS3332A、FS3332B、FS3332L
1.3
2014/05/22
2
Revise company address
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Version
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