S-8233C Series
www.sii-ic.com
© Seiko Instruments Inc., 1997-2013
BATTERY PROTECTION IC
FOR 3-SERIAL-CELL PACK
Rev.5.0
_01
The S-8233C Series is a series of lithium-ion rechargeable battery protection ICs incorporating high-accuracy
voltage detection circuits and delay circuits.
The S-8233C series includes the function to measure the status of battery pack. It is suitable for a 3-serial-cell
lithium-ion rechargeable battery pack.
Features
(1)
3.80
±
0.05 V to 4.40
±
0.05 V
5 mV - step
•
Overcharge release voltage
3.45
±
0.10 V to 4.40
±
0.10 V
5 mV - step
(The overcharge release voltage can be selected within the range where a difference from
overcharge detection voltage is 0 to 0.35 V at 50 mV - Step)
•
Overdischarge detection voltage
2.00
±
0.08 V to 2.80
±
0.08 V
50 mV - step
•
Overdischarge release voltage
2.00
±
0.10 V to 4.00
±
0.10 V
50 mV - step
(The overdischarge release voltage can be selected within the range where a difference from
overdischarge detection voltage is 0 to 1.2 V at 50 mV - Step)
•
Overcurrent detection voltage 1
0.15
±
0.015 V to 0.50
±
0.05 V
50 mV - step
(2) High input-voltage device (absolute maximum rating: 26 V)
(3) Indicates Li-ion battery state.
(4) Wide operating voltage range:
2 V to 24 V
(5) The delay time for every detection can be set via an external capacitor.
(6) Three overcurrent detection levels (protection for short-circuiting)
(7) Internal charge/discharge prohibition circuit via the control pin
(8) The function for charging batteries from 0 V is available.
(9) Low current consumption
•
Operation
50
μA
max. (+25
°C)
•
Power-down
0.1
μA
max. (+25
°C)
*1
(10) Lead-free, Sn 100%, halogen-free
*1.
Refer to “
Product Name Structure”
for details.
Internal high-accuracy voltage detection circuit
•
Overcharge detection voltage
Applications
•
Lithium-ion rechargeable battery packs
•
Lithium polymer rechargeable battery packs
Package
•
16-Pin TSSOP
Seiko Instruments Inc.
1
BATTERY PROTECTION IC FOR 3-SERIAL-CELL PACK
S-8233C Series
Block Diagram
Reference
voltage 1
Overcurrent
detection
circuit
Rev.5.0
_01
VCC
Overcurrent
2,3 delay circuit
VMP
+
-
CSO
Battery 1
Overcharge
+
-
Battery 1
Overdischarge
Overcurrent1‚
delay circuit
COVT
Overcharge
VC1
Overdischarge
delay circuit
CDT
+
-
ISO
Control
Logic
Battery 2
Overcharge
Overcharge
delay circuit
+
Battery 2
Overdischarge
Reference
voltage 2
CCT
-
Overcurrent
VC2
DOP
+
-
DSO
Battery 3
Overcharge
+
Battery 3
Overdischarge
Reference
voltage 3
Floating
detection circuit
COP
-
Over-
discharge
VSS
CTL
Remark
The delay time for overcurrent detection 2 and 3 is fixed by an internal IC circuit.
The delay time cannot be changed via an external capacitor.
Figure 1
In the overcharge status, the CSO pin outputs “H”.
In the overdischarge status, the DSO pin outputs “H”.
In the overcurrent status, the ISO pin outputs “H”.
In normal status, the above CSO, DSO, and ISO pins output “L”.
The outputs are CMOS outputs.
2
Seiko Instruments Inc.
Rev.5.0
_01
Product Name Structure
1. Product name
BATTERY PROTECTION IC FOR 3-SERIAL-CELL PACK
S-8233C Series
S-8233C
x
FT
−
TB
−
x
Environmental code
U : Lead-free (Sn 100%), halogen-free
G : Lead-free (for details, please contact our sales office)
IC direction in tape specifications
*1
Package name (abbreviation)
FT: 16-Pin TSSOP
Serial code
Assigned from A to Z in alphabetical order
*1.
Refer to the tape specifications.
2. Package
Drawing Code
Tape
FT016-A-C-SD
Package Name
16-Pin TSSOP
Package
FT016-A-P-SD
Reel
FT016-A-R-SD
3. Product name list
Table1
Overcurrent
Overcharge Overcharge Overdischarge Overdischarge
Product name /
detection
release voltage
detection
0 V battery charging
detection release voltage
Item
voltage
voltage1
function
voltage
(V
CD
)
(V
DD
)
(V
DU
)
(V
IOV1
)
(V
CU
)
S-8233CAFT-TB-x
4.250 V
4.050 V
2.00 V
2.30 V
0.25 V
−
Remark 1.
Please contact our sales office for the products with the detection voltage value other than those
specified above.
2.
x: G or U
3.
Please select products of environmental code = U for Sn 100%, halogen-free products.
Seiko Instruments Inc.
3
BATTERY PROTECTION IC FOR 3-SERIAL-CELL PACK
S-8233C Series
Pin Configuration
16-Pin TSSOP
Top View
DOP
NC
COP
VMP
COVT
CDT
CCT
VSS
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VCC
NC
CSO
VC1
ISO
VC2
DSO
CTL
Rev.5.0
_01
Table2
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Symbol
DOP
NC
COP
VMP
COVT
CDT
CCT
VSS
CTL
DSO
VC2
ISO
VC1
CSO
NC
VCC
Non connect
*1
Connects FET gate for charge control (Nch open-drain output)
Detects voltage between VCC to VMP(Overcurrent detection pin)
Connects capacitor for overcurrent detection 1 delay circuit
Connects capacitor for overdischarge detection delay circuit
Connects capacitor for overcharge detection delay circuit
Negative power input, and connects negative voltage for battery 3
Charge/discharge control signal input
Overdischarge status signal output
Connects battery 2 negative voltage and battery 3 positive voltage
Overcurrent status signal output
Connects battery 1 negative voltage and battery 2 positive voltage
Overcharge status signal output
Non connect
*1
Positive power input and connects battery 1 positive voltage
Description
Connects FET gate for discharge control (CMOS output)
Figure 2
*1.
The NC pin is electrically open. The NC pin can be connected to VCC or VSS.
4
Seiko Instruments Inc.
Rev.5.0
_01
Absolute Maximum Ratings
BATTERY PROTECTION IC FOR 3-SERIAL-CELL PACK
S-8233C Series
Table3
(Ta
=
25°C unless otherwise specified)
Item
Symbol
Applied Pins
−
Absolute Maximum Ratings
V
SS
-0.3 to V
SS
+26
V
SS
-0.3 to V
CC
+0.3
V
SS
-0.3 to V
SS
+26
V
SS
-0.3 to V
CC
+0.3
V
SS
-0.3 to V
CC
+0.3
V
SS
-0.3 to V
VMP
+0.3
1100
*1
-20 to +70
-40 to +125
Unit
V
V
V
V
V
V
mW
°C
°C
Input voltage between VCC and VSS V
DS
Input pin voltage
VMP pin input voltage
CSO,ISO,DSO pin output voltage
DOP pin output voltage
COP pin output voltage
Power dissipation
Operating ambient temperature
V
IN
V
VMP
V
OUT
V
DOP
V
COP
P
D
T
opr
VC1, VC2, CTL,
CCT, CDT,
COVT
VMP
CSO,ISO,DSO
DOP
COP
−
−
−
300 (When not mounted on board) mW
Storage temperature
T
stg
−
*1.
When mounted on board
[Mounted board]
(1) Board size :
114.3 mm
×
76.2 mm
×
t1.6 mm
(2) Board name : JEDEC STANDARD51-7
Caution The absolute maximum ratings are rated values exceeding which the product could suffer
physical damage. These values must therefore not be exceeded under any conditions.
Power Dissipation (P
D
) [mW]
1200
1000
800
600
400
200
0
0
50
100
150
Ambient Temperature (Ta) [°C]
Figure 3 Power Dissipation of Package (When Mounted on Board)
Seiko Instruments Inc.
5
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