Rev.4.1
_00
BATTERY PROTECTION IC
FOR 3-SERIAL-CELL PACK
S-8233C Series
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 battery pack.
Features
(1)
Internal high-accuracy voltage detection circuit
•
Over charge detection voltage
•
3.80
±
0.05 V to 4.40
±
0.05 V
5 mV - step
Over charge release voltage
3.45
±
0.10 V to 4.40
±
0.10 V
5 mV - step
(The over charge release voltage can be selected within the range where a difference from over
charge detection voltage is 0 to 0.35 V at 50 mV - Step)
Over discharge detection voltage
2.00
±
0.08 V to 2.80
±
0.08 V
50 mV - step
Over discharge release voltage
2.00
±
0.10 V to 4.00
±
0.10 V
50 mV - step
(The over discharge release voltage can be selected within the range where a difference from over
discharge detection voltage is 0 to 1.2 V at 50 mV - Step)
Over current detection voltage 1
0.15
±
0.015 V to 0.50
±
0.05 V
50 mV - step
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
High input-voltage device (absolute maximum rating: 26 V)
Indicates Li-ion battery state.
Wide operating voltage range:
2 V to 24 V
The delay time for every detection can be set via an external capacitor.
Three over current detection levels (protection for short-circuiting)
Internal charge/discharge prohibition circuit via the control terminal
The function for charging batteries from 0 V is available.
Low current consumption
•
Operation
50
μA
max. (+25
°C)
•
Power-down
0.1
μA
max. (+25
°C)
(10) Lead-free products
•
•
•
Applications
Lithium-ion rechargeable battery packs
Package
Package Name
16-Pin TSSOP
Package
FT016-A
Drawing Code
Tape
FT016-A
Reel
FT016-A
1
Seiko Instruments Inc.
BATTERY PROTECTION IC FOR 3-SERIAL-CELL PACK
S-8233C Series
Block Diagram
Rev.4.1
_00
VCC
Reference
voltage 1
Over current
2,3 delay circuit
Over current
detection
circuit
VMP
+
-
CSO
Battery 1
Over charge
+
-
Battery 1
Over discharge
Over current1‚
delay circuit
COVT
Over
charge
VC1
Over discharge
delay circuit
CDT
+
-
ISO
Control
Logic
Battery 2
Over charge
Over charge
delay circuit
+
Battery 2
Over discharge
Reference
voltage 2
CCT
-
Over
current
VC2
DOP
+
-
DSO
Battery 3
Over charge
+
Battery 3
Over discharge
Reference
voltage 3
Floating
detection circuit
COP
-
Over
discharge
VSS
CTL
Figure 1
The delay time for over current detection 2 and 3 is fixed by an internal IC circuit. The delay time cannot
be changed via an external capacitor.
In the overcharge condition, the CSO pin outputs “H”.
In the overdischarge condition, the DSO pin outputs “H”.
In the overcurrent condition, the ISO pin outputs “H”.
In normal condition, the above CSO, DSO, and ISO pins output “L”.
The outputs are CMOS outputs.
2
Seiko Instruments Inc.
Rev.4.1
_00
Product Name Structure
1. Product name
S−8233C
x
FT
BATTERY PROTECTION IC FOR 3-SERIAL-CELL PACK
S-8233C Series
−
TB
−
G
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 taping specifications.
2. Product name list
Table1
Over charge Over charge Over discharge Over discharge
detection
release voltage
detection release voltage
voltage
voltage
(V
CD
)
(V
DD
)
(V
DU
)
(V
CU
)
S-8233CAFT-TB-G 4.25±0.05 V 4.05±0.10 V
2.00±0.08 V
2.30±0.10 V
Model/Item
Over current
detection
voltage1
(V
IOV1
)
0.25±0.025 V
0V battery charging
function
−
Remark
Please contact our sales office for the products with the detection voltage value other than those
specified above.
Seiko Instruments Inc.
3
BATTERY PROTECTION IC FOR 3-SERIAL-CELL PACK
S-8233C Series
Rev.4.1
_00
Pin Configurations
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
Table2
Pin No.
1
2
3
4
5
6
7
Symbol
DOP
NC
COP
VMP
COVT
CDT
CCT
VSS
CTL
DSO
VC2
ISO
VC1
CSO
NC
VCC
Description
Connects FET gate for discharge control (CMOS output)
Non connect
*1
Connects FET gate for charge control (Nch open-drain output)
Detects voltage between VCC to VMP(Over current detection pin)
Connects capacitor for over current detection 1 delay circuit
Connects capacitor for over discharge detection delay circuit
Connects capacitor for over charge detection delay circuit
Negative power input, and connects negative voltage for battery 3
Charge/discharge control signal input
Over discharge condition signal output
Connects battery 2 negative voltage and battery 3 positive voltage
Over current condition signal output
Connects battery 1 negative voltage and battery 2 positive voltage
Over voltage condition signal output
Non connect
*1
Figure 2
8
9
10
11
12
13
14
15
16
Positive power input and connects battery 1 positive voltage
*1.
The NC pin is electrically open. The NC pin can be connected to VCC or VSS
.
4
Seiko Instruments Inc.
Rev.4.1
_00
BATTERY PROTECTION IC FOR 3-SERIAL-CELL PACK
S-8233C Series
Absolute Maximum Ratings
Table3
Item
Input voltage between VCC and VSS
Input terminal voltage
VMP Input terminal voltage
CSO,ISO,DSO output terminal voltage
DOP output terminal voltage
COP output terminal voltage
Power dissipation
Operating temperature range
Storage temperature range
Sym.
V
DS
V
IN
V
VMP
V
OUT
V
DOP
V
COP
P
D
T
opr
T
stg
−
VC1, VC2, CTL, CCT, CDT, COVT
VMP
CSO,ISO,DSO
DOP
COP
−
−
−
−
(Ta
=
25
°C
unless otherwise specified)
Applied Pins
Rating
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
300 (When not mounted on board)
1100
*1
Unit
V
V
V
V
V
V
mW
mW
°C
°C
-20 to +70
-40 to +125
*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.
1200
Power Dissipation P
D
(mW)
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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