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S-8233A Series Rev.4.3
_00


BATTERY PROTECTION IC
FOR 3-SERIAL-CELL PACK

S-8233A Series

Seiko Instruments Inc.
1
The S-8233A Series is a series of lithium-ion rechargeable battery
protection ICs incorporating high-accuracy voltage detection circuits and
delay circuits. It is suitable for a 3-serial-cell lithium-ion rechargeable
battery pack.


Features

(1)
Internal high-accuracy voltage detection circuit
Over charge detection voltage
4.10
� 0.05 V to 4.35 � 0.05 V


50 mV- step
Over charge release voltage
3.85
� 0.10 V to 4.35 � 0.10 V


50 mV- step
(The over charge release voltage can be selected within the range where a difference from over
charge detection voltage is 0 V to 0.3 V)
Over discharge detection voltage
2.00
� 0.08 V to 2.70 � 0.08 V


100 mV- step
Over discharge release voltage
2.00
� 0.10 V to 3.70 � 0.10 V


100 mV - step
(The over discharge release voltage can be selected within the range where a difference from over
discharge detection voltage is 0 V to 1.0 V)
Over current detection voltage 1
0.15
� 0.015 V to 0.5 � 0.05 V


50 mV-step
(2)
High input-voltage device (absolute maximum rating: 26 V)
(3)
Wide operating voltage range:
2 V to 24 V
(4)
The delay time for every detection can be set via an external capacitor.
(5)
Three over current detection levels (protection for short-circuiting)
(6)
Internal charge/discharge prohibition circuit via the control terminal

(7)
The function for charging batteries from 0 V is available.
(8) Low
current
consumption
Operation
50
�A max. (+25 �C)
Power-down
0.1
�A max. (+25 �C)
(9) Lead-free
products


Applications

Lithium-ion rechargeable battery packs

Lithium polymer rechargeable battery packs


Packages

Drawing Code
Package Name
Package Tape Reel
14-Pin SOP
FE014-A
FE014-A
FE014-A
16-Pin TSSOP
FT016-A
FT016-A
FT016-A
BATTERY PROTECTION IC FOR 3-SERIAL-CELL PACK
S-8233A Series
Rev.4.3
_00

Seiko Instruments Inc.
2
Block Diagram



Battery 1
Over charge
Battery 3
Over discharge
Battery 3
Over charge

Battery 2
Over charge

Battery 2
Over discharge

Over charge
delay circuit
Battery 1
Over discharge

Battery 3
Over charge
Battery 2
Over charge

Battery 1
Over charge

Reference
voltage 3
Reference
voltage 2

Reference
voltage 1

Control
Logic
Over current
detection
circuit

Over discharge
delay circuit

Over current1,
delay circuit

Over current
2,3 delay circuit

+

+

+

+

+

+

DOP
VMP
COVT

CDT
CCT
COP
CTL
VSS
CD3
VC2
CD2
CD1
VC1
VCC
Floating
detection circuit


Figure 1

Remark 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.

BATTERY PROTECTION IC FOR 3-SERIAL-CELL PACK
Rev.4.3
_00

S-8233A Series

Seiko Instruments Inc.
3
Product Name Structure


1. Product name
S-8233A x xx - TB -
G























IC direction in tape specifications
*1












Package name (abbreviation)
FE: 14-Pin SOP
FT: 16-Pin TSSOP












Serial code
Assigned from A to Z in alphabetical order


*1. Refer to the tape specifications.

BATTERY PROTECTION IC FOR 3-SERIAL-CELL PACK
S-8233A Series
Rev.4.3
_00

Seiko Instruments Inc.
4
2. Product name list
14-Pin SOP
Table 1
Product name / Item
Overcharge
detection voltage
V
CU

Overcharge
release voltage
V
CD

Overdischarge
detection voltage
V
DD

Overdischarge
release voltage
V
DU

Overcurrent
detection voltage1
V
IOV1

0 V battery
charge function
S-8233ACFE-TB-G
4.25�0.05 V
4.05�0.10 V
2.00�0.08 V
2.30�0.10 V
0.20�0.02 V

S-8233ADFE-TB-G
4.10�0.05 V
4.10 *1
2.00�0.08 V
2.30�0.10 V
0.20�0.02 V

S-8233AEFE-TB-G
4.25�0.05 V
4.10�0.10 V
2.30�0.08 V
2.70�0.10 V
0.15�0.015 V

S-8233AFFE-TB-G
4.35�0.05 V
4.05�0.10 V
2.40�0.08 V
2.70�0.10 V
0.50�0.05 V
Available
S-8233AGFE-TB-G
4.25�0.05 V
4.05�0.10 V
2.40�0.08 V
2.70�0.10 V
0.40�.0.04 V
Available
S-8233AIFE-TB-G
4.25�0.05 V
4.10�0.10 V
2.30�0.08 V
3.00�0.10 V
0.15�0.015 V

S-8233AJFE-TB-G
4.35�0.05 V
4.05�0.10 V
2.40�0.08 V
2.70�0.10 V
0.30�0.03 V

S-8233AKFE-TB-G
4.35�0.05 V
4.05�0.10 V
2.40�0.08 V
2.70�0.10 V
0.15�0.015 V

S-8233ALFE-TB-G
4.35�0.05 V
4.05�0.10 V
2.40�0.08 V
2.70�0.10 V
0.40�0.04 V
Available
S-8233AMFE-TB-G
4.35�0.05 V
4.05�0.10 V
2.40�0.08 V
2.70�0.10 V
0.30�0.03 V
Available
S-8233ANFE-TB-G
4.35�0.05 V
4.05�0.10 V
2.40�0.08 V
2.40�0.10 V
0.15�0.015 V
Available
S-8233AOFE-TB-G
4.35�0.05 V
4.05�0.10 V
2.40�0.08 V
2.70�0.10 V
0.15�0.015 V
Available
S-8233APFE-TB-G
4.25�0.05 V
4.05�0.10 V
2.70�0.08 V
3.00�0.10 V
0.30�0.03 V
Available
S-8233AQFE-TB-G
4.25�0.05 V
4.25 *1
2.70�0.08 V
3.00�0.10 V
0.30�0.03 V
Available
*1. Without over charge detection hysteresis.
Remark Please contact our sales office for the products with the detection voltage value other than those
specified above.

16-Pin TSSOP
Table 2
Product name / Item
Overcharge
detection voltage
V
Cu

Overcharge
release voltage
V
CD

Overdischarge
detection voltage
V
DD

Overdischarge
release voltage
V
DU

Overcurrent
detection voltage1
V
IOV1

0 V battery
charge function
S-8233ACFT-TB-G
4.25�0.05 V
4.05�0.10 V
2.00�0.08 V
2.30�0.10 V
0.20�0.02 V

S-8233ADFT-TB-G 4.10�0.05
V
4.10
*1

2.00�0.08 V
2.30�0.10 V
0.20�0.02 V

S-8233AEFT-TB-G
4.25�0.05 V
4.10�0.10 V
2.30�0.08 V
2.70�0.10 V
0.15�0.015 V

S-8233AFFT-TB-G
4.35�0.05 V
4.05�0.10 V
2.40�0.08 V
2.70�0.10 V
0.50�0.05 V
Available
S-8233AGFT-TB-G
4.25�0.05 V
4.05�0.10 V
2.40�0.08 V
2.70�0.10 V
0.40�.0.04 V
Available
S-8233AIFT-TB-G
4.25�0.05 V
4.10�0.10 V
2.30�0.08 V
3.00�0.10 V
0.15�0.015 V

S-8233AJFT-TB-G
4.35�0.05 V
4.05�0.10 V
2.40�0.08 V
2.70�0.10 V
0.30�0.03 V

S-8233AKFT-TB-G
4.35�0.05 V
4.05�0.10 V
2.40�0.08 V
2.70�0.10 V
0.15�0.015 V

S-8233ALFT-TB-G
4.35�0.05 V
4.05�0.10 V
2.40�0.08 V
2.70�0.10 V
0.40�0.04 V
Available
S-8233AMFT-TB-G
4.35�0.05 V
4.05�0.10 V
2.40�0.08 V
2.70�0.10 V
0.30�0.03 V
Available
S-8233ANFT-TB-G
4.35�0.05 V
4.05�0.10 V
2.40�0.08 V
2.40�0.10 V
0.15�0.015 V
Available
S-8233AOFT-TB-G
4.35�0.05 V
4.05�0.10 V
2.40�0.08 V
2.70�0.10 V
0.15�0.015 V
Available
S-8233APFT-TB-G
4.25�0.05 V
4.05�0.10 V
2.70�0.08 V
3.00�0.10 V
0.30�0.03 V
Available
S-8233ARFT-TB-G
4.35�0.05 V
4.05�0.10 V
2.00�0.08 V
2.70�0.10 V
0.30�0.03 V
Available
S-8233ASFT-TB-G
4.25�0.05 V
4.05�0.10 V
2.40�0.08 V
2.70�0.10 V
0.50�0.05 V
Available
*1. Without over charge detection hysteresis.
Remark Please contact our sales office for the products with the detection voltage value other than those
specified above.
BATTERY PROTECTION IC FOR 3-SERIAL-CELL PACK
Rev.4.3
_00

S-8233A Series

Seiko Instruments Inc.
5
Pin Configurations



Table
3
Pin No. Symbol
Description
1 DOP
Connects FET gate for discharge control (CMOS output)
2 COP
Connects FET gate for charge control (Nch open-drain output)
3 VMP
Detects voltage between VCC to VMP(Over current detection pin)
4 COVT
Connects capacitor for over current detection1delay circuit
5 CDT
Connects capacitor for over discharge detection delay circuit
6 CCT
Connects capacitor for over charge detection delay circuit
7 VSS
Negative power input, and connects negative voltage for battery 3
8 CTL
Charge/discharge control signal input
9 CD3
Battery 3 conditioning signal output
10 VC2
Connects battery 2 negative voltage and battery 3 positive voltage
11 CD2
Battery 2 conditioning signal output
12 VC1
Connects battery 1 negative voltage and battery 2 positive voltage
13 CD1
Battery 1 conditioning signal output

VSS
VMP
VCC
CTL
14
13
12
11
10
9
8
7
6
5
4
3
2
1
DOP
COP
CCT
COVT
CDT
VC1
VC2
CD1
CD3
CD2
14-Pin SOP
Top view

Figure 2
14 VCC
Positive power input and connects battery 1 positive voltage



Table 4
Pin No. Symbol
Description
1 DOP
Connects FET gate for discharge control (CMOS output)
2 NC
No connection
*1

3 COP
Connects FET gate for charge control (Nch open-drain output)
4 VMP
Detects voltage between VCC to VMP(Over current detection pin)
5 COVT
Connects capacitor for over current detection1 delay circuit
6 CDT
Connects capacitor for over discharge detection delay circuit
7 CCT
Connects capacitor for over charge detection delay circuit
8 VSS
Negative power input, and connects negative voltage for battery 3
9 CTL
Charge/discharge control signal input
10 CD3
Battery 3 conditioning signal output
11 VC2
Connects battery 2 negative voltage and battery 3 positive voltage
12 CD2
Battery 2 conditioning s