Fo r tun e
Semiconductor Corporation
富晶半導體股½有限公司
FS326
Series Datasheet
FS326 Series Datasheet
﹝V1.2﹞
Lithium-Ion/Lithium-Polymer Battery Protection IC
Fortune Semiconductor Co.
TEL : +886-2-2809-4742
http://www.fsc.com.tw
FAX: +886-2-2809-4874
1/19
TD0305-1401 Ver. 1.2
Fo r tun e
1.
Description
Semiconductor Corporation
富晶半導體股½有限公司
FS326
Series Datasheet
FS326 is a series of lithium-ion and lithium polymer rechargeable battery protection ICs with high
accurate voltage detection and delay circuits.
These ICs are suitable for protection of single cell lithium-ion or lithium polymer battery packs from
over charge, over discharge, and over current.
2.
1-Cell Protection ICs
Package
Model
SOT-23-6
A
B
FS326
C
D
E
Overcharge
detection
voltage
[VOCU] (V)
4.325±0.025
4.350±0.025
4.325±0.025
4.300±0.025
4.300±0.040
Overcharge
release
voltage
[VOCR] (V)
4.075±0.05
4.150±0.05
4.075±0.05
4.080±0.05
4.080±0.05
Overdischarge
detection
voltage
[VODL] (V)
2.50±0.08
2.30±0.08
2.50±0.08
2.50±0.08
2.50±0.08
Overdischarge
release
voltage
[VODR] (V)
2.90±0.08
3.00±0.08
2.90±0.08
2.90±0.08
2.90±0.08
Overcurrent
detection
voltage
[VOI1] (mV)
100±30
100±30
150±30
150±30
150±30
Overcharge and overdischarge and overcurrent detection voltages can be changed at the customer’s request.
Fortune Semiconductor Co.
TEL : +886-2-2809-4742
http://www.fsc.com.tw
FAX: +886-2-2809-4874
2/19
TD0305-1401 Ver. 1.2
Fo r tun e
3.
Features
1)
2)
3)
4)
5)
6)
7)
8)
9)
Semiconductor Corporation
富晶半導體股½有限公司
FS326
Series Datasheet
Low supply current
Overcharge detection voltage﹝VOCU﹞
Overcharge release voltage﹝VOCR﹞
Operation: 3.0uA typ. @VDD=3.9V
Power-down mode: 0.1uA max. @VDD=2.0V
4.0V~4.4V, Accuracy of
±25mV
3.8V~4.4V, Accuracy of
±50mV
2.0V~3.0V, Accuracy of
±80mV
2.0V~3.4V, Accuracy of
±80mV
0.05V~0.4V, Accuracy of
±30mV
Fixed at 1.35V
Overdischarge detection voltage﹝VODL﹞
Overdischarge release voltage﹝VODR﹞
Over current detection voltage﹝VOI1﹞
Short circuit detection voltage﹝VOI2﹞
Delay times are generated by an internal circuit. (External capacitors are unnecessary.)
Charger detection voltage
-0.5V
>500KΩ
1.8 ~ 9.0V
SOT-23-6
10)
Reset resistance for Over current protection
11)
Wide supply voltage range
12)
Small package
4.
Applications
1)
Protection IC for One-Cell Lithium-Ion / Lithium-Polymer Battery Pack
Fortune Semiconductor Co.
TEL : +886-2-2809-4742
http://www.fsc.com.tw
FAX: +886-2-2809-4874
3/19
TD0305-1401 Ver. 1.2
Fo r tun e
5.
Block Diagram
Semiconductor Corporation
富晶半導體股½有限公司
FS326
Series Datasheet
VDD
DS
VSS
Short circuit
Detector
Oscillator
Control
Circuit
Over current
Detector
Divider
Control Logic
Charger
Detector
VSS
Overcharge
Detector
VSS
CSI
Overdischarge
Detector
VSS
VSS
VSS
Control Logic
OD
6.
Pin Configuration
Pin No. Symbol
1
2
3
4
5
6
OD
CSI
OC
DS
VDD
VSS
Description
FET gate connection pin for discharge control
Input pin for current sense, charger detect
FET gate connection pin for charge control
Test pin for reduce delay time
Positive power input pin
Negative power input pin
1
2
3
SOT-23-6
TOP VIEW
6
5
4
Fortune Semiconductor Co.
TEL : +886-2-2809-4742
http://www.fsc.com.tw
FAX: +886-2-2809-4874
4/19
OC
TD0305-1401 Ver. 1.2
Fo r tun e
7.
Semiconductor Corporation
富晶半導體股½有限公司
FS326
Series Datasheet
Typical Application Circuit
VBAT+
R1
100 ~ 470Ω
VDD
BATTERY
C1
0.1uF
VSS
DS
FS326 Series
CSI
OD
OC
M1
M2
R2
1kΩ
VBAT-
8.
Absolute Maximum Ratings
(VSS=0V, Ta=25℃ unless otherwise specified)
Item
Input voltage between VDD and VSS *
OC output pin voltage
OD output pin voltage
CSI input pin voltage
DS input pin voltage
Operating Temperature Range
Storage Temperature Range
Symbol
VDD
VOC
VOD
VCSI
VDS
TOP
TST
Rating
VSS-0.3 to VSS+12
VDD-26 to VDD+0.3
VSS-0.3 to VDD+0.3
VDD-26 to VDD+0.3
VSS-0.3 to VDD+0.3
-40 to +85
-40 to +125
Unit
V
V
V
V
V
℃
℃
Note: This IC contains a circuit that protects it from static discharge, but take special care that no excessive static
electricity or voltage which exceeds the limit of the protection circuit is applied to the IC.
* Pulse (μsec) noise exceeding the above input voltage (VSS+12V) may cause damage to the IC.
Fortune Semiconductor Co.
TEL : +886-2-2809-4742
http://www.fsc.com.tw
FAX: +886-2-2809-4874
5/19
TD0305-1401 Ver. 1.2
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