S-8264A/B/C Series
www.ablicinc.com
© ABLIC Inc., 2005-2018
BATTERY PROTECTION IC FOR 2-SERIAL
TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION)
Rev.4.4
_00
The S-8264A/B/C Series is used for secondary protection of lithium-ion rechargeable batteries, and incorporates a
high-accuracy voltage detection circuit and a delay circuit.
Short-circuiting between cells makes it possible for serial connection of two cells to four cells.
Features
High-accuracy voltage detection circuit for each cell
•
Overcharge detection voltage n (n
=
1 to 4)
4.200 V to 4.800 V (in 50 mV steps) Accuracy :
±25
mV (+25°C), Accuracy :
±30
mV (−5°C to
+55°C)
•
Overcharge hysteresis voltage n (n
=
1 to 4)
−0.520 ±0.210
V,
−0.390 ±0.160
V,
−0.260 ±0.110
V,
−0.130 ±0.06
V, None
(2) Delay times for overcharge detection can be set by an internal circuit only (external capacitors are unnecessary)
(3) Output control function via CTL pin (CTL pin is pulled down internally) (S-8264A Series)
Output control function via CTL pin (CTL pin is pulled up internally) (S-8264C Series)
(4) Output latch function after overcharge detection (S-8264B Series)
(5) Output form and logic
CMOS output active “H”
(6) High withstand voltage
Absolute maximum rating 26 V
(7) Wide operation voltage range
3.6 V to 24 V
(8) Wide operation temperature range
−40°C
to
+85°C
(9) Low current consumption
•
At 3.5 V for each cell
5.0
μA
max. (+25°C)
•
At 2.3 V for each cell
4.0
μA
max. (+25°C)
*1
(10) Lead-free, Sn 100%, halogen-free
*1.
Refer to “
Product Name Structure”
for details.
(1)
Application
•
Lithium-ion rechargeable battery packs (for secondary protection)
Packages
•
SNT-8A
•
8-Pin TSSOP
1
BATTERY PROTECTION IC FOR 2-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION)
S-8264A/B/C Series
Block Diagrams
(1) S-8264A Series
Rev.4.4
_00
VDD
SENSE
Overcharge
detection
comparator 1
+
−
Reference voltage 1
VC1
Overcharge
detection
comparator 2
Oscillator
Overcharge
detection/release
delay circuit
+
−
Reference voltage 2
VC2
Overcharge
detection
comparator 3
Control
logic
+
−
Reference voltage 3
VC3
Overcharge
detection
comparator 4
CO
+
−
Reference voltage 4
VSS
CTL
Remark
The diodes in the figure are parasitic diodes.
Figure 1
2
Rev.4.4
_00
BATTERY PROTECTION IC FOR 2-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION)
S-8264A/B/C Series
(2) S-8264B Series
VDD
SENSE
Overcharge
detection
comparator 1
+
−
Reference voltage 1
VC1
Overcharge
detection
comparator 2
Oscillator
Overcharge
detection/release
delay circuit
+
−
Reference voltage 2
VC2
Overcharge
detection
comparator 3
Control
logic
+
−
Reference voltage 3
VC3
Overcharge
detection
comparator 4
SR
latch
CO
+
−
Reference voltage 4
VSS
CTL
UVLO
Remark
The diodes in the figure are parasitic diodes.
Figure 2
3
BATTERY PROTECTION IC FOR 2-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION)
S-8264A/B/C Series
Rev.4.4
_00
（3）S-8264C
Series
VDD
SENSE
Overcharge
detection
comparator 1
＋
－
Reference voltage 1
VC1
Overcharge
detection
comparator 2
Oscillator
Overcharge
detection/release
delay circuit
Control
logic
＋
－
Reference voltage 2
VC2
Overcharge
detection
comparator 3
＋
－
Reference voltage 3
VC3
Overcharge
detection
comparator 4
CO
＋
－
Reference voltage 4
VSS
CTL
Remark
The diodes in the figure are parasitic diodes.
Figure 3
4
Rev.4.4
_00
BATTERY PROTECTION IC FOR 2-SERIAL TO 4-SERIAL-CELL PACK (SECONDARY PROTECTION)
S-8264A/B/C Series
Product Name Structure
1. Product Name
(1) SNT-8A
S-8264
x
xx
-
I8T1
U
Environmental code
U:
Lead-free (Sn 100%), halogen-free
Package abbreviation and IC packing specification
I8T1: SNT-8A, Tape
*1
Serial code
Sequentially set from AA to AZ
Product type
A:
Without CO pin output latch function (CTL pin is pulled down internally)
B:
With CO pin output latch function
C:
Without CO pin output latch function (CTL pin is pulled up internally)
*2
*1.
Refer to the tape drawing.
*2.
Refer to “3.
Product Name List”.
(2) 8-Pin TSSOP
S-8264
x
xx
-
T8T1
x
Environmental code
U:
Lead-free (Sn 100%), halogen-free
G:
Lead-free (for details, please contact our sales office)
Package abbreviation and IC packing specification
T8T1: 8-Pin TSSOP, Tape
Serial code
*2
Sequentially set from AA to AZ
Product type
A:
Without CO pin output latch function (CTL pin is pulled down internally)
B:
With CO pin output latch function
C:
Without CO pin output latch function (CTL pin is pulled up internally)
*1
*1.
Refer to the tape drawing.
*2.
Refer to “3.
Product Name List”.
2. Packages
Drawing Code
Tape
Reel
PH008-A-C-SD
PH008-A-R-SD
FT008-E-C-SD
FT008-E-R-SD
FT008-E-C-SD
FT008-E-R-S1
Package Name
SNT-8A
8-Pin TSSOP
Environmental code = G
Environmental code = U
Package
PH008-A-P-SD
FT008-A-P-SD
FT008-A-P-SD
Land
PH008-A-L-SD
⎯
5
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