Rev.3.1
_00
BATTERY PROTECTION IC FOR SINGLE-CELL PACK
S-8261 Series
The S-8261 series are lithium-ion / lithium polymer rechargeable
battery protection ICs incorporating high-accuracy voltage
detection circuit and delay circuit.
The S-8261 series are suitable for protection of single-cell lithium
ion/lithium polymer battery packs from overcharge, overdischarge
and overcurrent.
Features
(1)
Accuracy:
±25
mV (+25
°C)
and
±30
mV (−5 to
+55 °C)
*1
•
Overcharge hysteresis voltage
0.0 V to 0.4 V
Accuracy:
±25
mV
The overcharge hysteresis voltage can be selected from the range 0.0 V to 0.4 V in 50 mV step.
•
Overdischarge detection voltage
2.0 V to 3.0 V (applicable in 10 mV step)
Accuracy:
±50
mV
*2
•
Overdischarge hysteresis voltage
0.0 V to 0.7 V
Accuracy:
±50
mV
The overdischarge hysteresis voltage can be selected from the range 0.0 V to 0.7 V in 100 mV step.
•
Overcurrent 1 detection voltage
0.05 V to 0.3 V (applicable in 10 mV step) Accuracy:
±15
mV
•
Overcurrent 2 detection voltage
0.5 V (fixed)
Accuracy:
±100
mV
(2) High voltage device is used for charger connection pins (VM and CO pins: absolute maximum rating
=
28 V).
(3) Delay times (overcharge: t
CU
, overdischarge: t
DL
, overcurrent 1: t
lOV1
, overcurrent 2: t
lOV2
) are generated by an internal
circuit. No external capacitor is necessary.
Accuracy:
±20%
(4) Three-step overcurrent detection circuit is included (overcurrent 1, overcurrent 2 and load short-circuiting).
(5) 0 V battery charge function “Available” / “Unavailable” are selectable.
(6) Power-down function “Yes” / “No” are selectable.
(7) Charger detection function and abnormal charge current detection function
•
The overdischarge hysteresis is released by detecting negative voltage at the VM pin (−0.7 V typ.) (Charger detection function).
•
When the output voltage of the DO pin is high and the voltage at the VM pin is equal to or lower than the charger detection
voltage (−0.7 V typ.), the output voltage of the CO pin goes low (Abnormal charge current detection function).
(8) Low current consumption
•
Operation mode
3.5
µA
typ., 7.0
µA
max.
•
Power-down mode
0.1
µA
max.
(9) Wide operating temperature range
−40
to
+85 °C
(10) Small package SOT-23-6, 6-Pin SNB(B)
(11) Lead-free products
*1.
Overcharge release voltage
=
Overcharge detection voltage
−
Overcharge hysteresis voltage (where overcharge
release voltage
<
3.8 V is prohibited.)
*2.
Overdischarge release voltage
=
Overdischarge detection voltage
+
Overdischarge hysteresis voltage (where
overdischarge release voltage
>
3.4 V is prohibited.)
Internal high accuracy voltage detection circuit
•
Overcharge detection voltage
3.9 V to 4.4 V (applicable in 5 mV step)
Applications
•
Lithium-ion rechargeable battery packs
•
Lithium polymer rechargeable battery packs
Packages
Package name
SOT-23-6
6-Pin SNB(B)
Package
MP006-A
BD006-A
Drawing code
Tape
MP006-A
BD006-A
Reel
MP006-A
BD006-A
Seiko Instruments Inc.
1
Rev.3.1
_00
Product Name Structure
1. Product Name
1.1
SOT-23-6 Package
S-8261A
xx
MD
-
BATTERY PROTECTION IC FOR SINGLE-CELL PACK
S-8261 Series
xxx
T2
G
IC direction in tape specifications
*1
T2: SOT-23-6
Product name (abbreviation)
*2
Package name (abbreviation)
MD: SOT-23-6
Serial code
Assigned from AA to ZZ in alphabetical order
*1.
Refer to the taping specifications.
*2.
Refer to the Product Name List.
1.2
6-Pin SNB(B) Package
S-8261A
xx
BD
-
xxx
-
TF
IC direction in tape specifications
*1
TF: 6-Pin SNB(B)
Product name (abbreviation)
*2
Package name (abbreviation)
BD: 6-Pin SNB(B)
Serial code
Assigned from AA to ZZ in alphabetical order
*1.
Refer to the taping specifications.
*2.
Refer to the Product Name List.
Seiko Instruments Inc.
3
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