Battery Protection IC with Cell-Balance Function S-8209B Series

The S-8209B Series is a protection IC for lithium-ion / lithium polymer rechargeable batteries and includes a high-accuracy voltage detection circuit and a delay circuit. This IC has a transmission function and two types of cell-balance function so that users are also able to configure a protection circuit with series multi-cell.

*Application Note: S-8209B Series Usage Guidelines

Features

High-accuracy voltage detection circuit: Overcharge detection voltage 3.9 V to 4.4 V (5 mV step) Accuracy ±25 mV; Overcharge release voltage 3.8 V to 4.4 V*1 Accuracy ±50 mV; Cell-balance detection voltage 3.9 V to 4.4 V (5 mV step)*2 Accuracy ±25 mV; Cell-balance release voltage 3.8 V to 4.4 V*3 Accuracy ±50 mV; Overdischarge detection voltage 2.0 V to 3.0 V (10 mV step) Accuracy ±50 mV; Overdischarge detection voltage 2.0 V to 3.4 V*4 Accuracy ±100 mV
Settable delay time by external capacitor for output pin
Control charging, discharging, cell-balance by CTLC, CTLD pins
Two types of cell-balance function; charge/discharge
Wide range of operation temperature: −40°C to +85°C
Low current consumption: 7.0 µA max.
Lead-free product

*1. Overcharge release voltage = Overcharge detection voltage − Overcharge hysteresis voltage
(Overcharge hysteresis voltage is selectable in 0 V, or in 0.1 V to 0.4 V in 50 mV step.)
*2. Overcharge detection voltage > Cell-balance detection voltage
(Overcharge detection voltage is always set higher than Cell-balance detection voltage)
*3. Cell-balance release voltage = Cell-balance detection voltage − Cell-balance hysteresis voltage
(Cell-balance hysteresis voltage is selectable in 0 V, or in 0.1 V to 0.4 V in 50 mV step.)
*4. Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis voltage
(Overdischarge hysteresis voltage is selectable in 0 V, in 0.1 V to 0.7 V in 100 mV step.)

Applications

Lithium-ion rechargeable battery packs
Lithium polymer rechargeable battery packs

Parts List

Product name y: S or U	Package	Overcharge Detection Voltage [VCU] (V)	Overcharge Release Voltage [VCL] (V)	Cell-balance Detection Voltage [VBU] (V)	Cell-balance Release Voltage [VBL] (V)	Overdischarge Detection Voltage [VDL] (V)	Overdischarge Release Voltage [VDU] (V)	Discharge Cell-balance Function
Product name
S-8209BAA-T8T1y	8-Pin TSSOP	4.100	4.000	4.050	4.000	2.50	2.70	Yes
S-8209BAD-T8T1y	8-Pin TSSOP	4.150	3.950	3.900	3.900	2.00	2.70	Yes
S-8209BAG-T8T1y	8-Pin TSSOP	3.800	3.650	3.700	3.700	2.20	2.50	No
S-8209BAH-T8T1y	8-Pin TSSOP	4.250	4.150	4.200	4.200	2.50	2.80	No
S-8209BAI-T8T1y	8-Pin TSSOP	4.250	4.150	4.100	4.050	2.50	2.70	Yes
S-8209BAJ-T8T1y	8-Pin TSSOP	4.150	3.950	3.900	3.900	2.30	3.00	No
S-8209BAK-T8T1y	8-Pin TSSOP	4.215	4.215	4.190	4.190	2.00	2.50	Yes
S-8209BAL-T8T1y	8-Pin TSSOP	4.300	4.100	4.225	4.225	2.00	2.50	Yes
S-8209BAN-T8T1U	8-Pin TSSOP	4.250	4.150	4.200	4.200	2.00	2.10	No
S-8209BAO-T8T1U	8-Pin TSSOP	4.300	4.200	4.200	4.200	2.30	3.00	No
S-8209BAP-T8T1U	8-Pin TSSOP	3.900	3.900	3.700	3.700	2.00	2.50	Yes
S-8209BAU-T8T1U	8-Pin TSSOP	4.225	4.175	4.215	4.165	2.30	3.00	Yes
S-8209BAW-T8T1U	8-Pin TSSOP	4.225	4.175	4.215	4.165	2.30	3.00	No
S-8209BAX-T8T1U	8-Pin TSSOP	4.210	4.160	4.190	4.140	2.50	3.20	No
S-8209BAY-T8T1U	8-Pin TSSOP	4.210	4.160	4.190	4.140	2.50	3.00	No
S-8209BAZ-T8T1U	8-Pin TSSOP	4.195	4.145	4.100	4.050	2.50	2.70	No
S-8209BBA-T8T1U	8-Pin TSSOP	3.700	3.500	3.550	3.550	2.00	2.50	Yes
S-8209BBB-T8T1U	8-Pin TSSOP	4.275	4.225	4.145	4.095	2.00	2.30	No
S-8209BBC-T8T1U	8-Pin TSSOP	4.200	4.100	4.145	4.095	2.00	2.30	No
S-8209BAA-I8T1U	SNT-8A	4.100	4.000	4.050	4.000	2.50	2.70	Yes
S-8209BAM-I8T1U	SNT-8A	4.000	3.800	3.900	3.850	3.00	3.40	No
S-8209BAO-I8T1U	SNT-8A	4.300	4.200	4.200	4.200	2.30	3.00	No
S-8209BAP-I8T1U	SNT-8A	3.900	3.900	3.700	3.700	2.00	2.50	Yes
S-8209BAR-I8T1U	SNT-8A	4.230	4.170	4.180	4.180	2.80	3.00	No

Product name
y: S or U

Package

Overcharge
Detection Voltage
[VCU]
(V)

Overcharge
Release Voltage
[VCL]
(V)

Cell-balance
Detection Voltage
[VBU]
(V)

Cell-balance
Release Voltage
[VBL]
(V)

Overdischarge
Detection Voltage
[VDL]
(V)

Overdischarge
Release Voltage
[VDU]
(V)

Discharge
Cell-balance
Function

Product name

S-8209BAA-T8T1y

8-Pin TSSOP

4.100

4.000

4.050

4.000

2.50

2.70

Yes

S-8209BAD-T8T1y

8-Pin TSSOP

4.150

3.950

3.900

2.00

2.70

Yes

S-8209BAG-T8T1y

8-Pin TSSOP

3.800

3.650

3.700

2.20

2.50

S-8209BAH-T8T1y

8-Pin TSSOP

4.250

4.150

4.200

2.50

2.80

S-8209BAI-T8T1y

8-Pin TSSOP

4.250

4.150

4.100

4.050

2.50

2.70

Yes

S-8209BAJ-T8T1y

8-Pin TSSOP

4.150

3.950

3.900

2.30

3.00

S-8209BAK-T8T1y

8-Pin TSSOP

4.215

4.190

2.00

2.50

Yes

S-8209BAL-T8T1y

8-Pin TSSOP

4.300

4.100

4.225

2.00

2.50

Yes

S-8209BAN-T8T1U

8-Pin TSSOP

4.250

4.150

4.200

2.00

2.10

S-8209BAO-T8T1U

8-Pin TSSOP

4.300

4.200

2.30

3.00

S-8209BAP-T8T1U

8-Pin TSSOP

3.900

3.700

2.00

2.50

Yes

S-8209BAU-T8T1U

8-Pin TSSOP

4.225

4.175

4.215

4.165

2.30

3.00

Yes

S-8209BAW-T8T1U

8-Pin TSSOP

4.225

4.175

4.215

4.165

2.30

3.00

S-8209BAX-T8T1U

8-Pin TSSOP

4.210

4.160

4.190

4.140

2.50

3.20

S-8209BAY-T8T1U

8-Pin TSSOP

4.210

4.160

4.190

4.140

2.50

3.00

S-8209BAZ-T8T1U

8-Pin TSSOP

4.195

4.145

4.100

4.050

2.50

2.70

S-8209BBA-T8T1U

8-Pin TSSOP

3.700

3.500

3.550

2.00

2.50

Yes

S-8209BBB-T8T1U

8-Pin TSSOP

4.275

4.225

4.145

4.095

2.00

2.30

S-8209BBC-T8T1U

8-Pin TSSOP

4.200

4.100

4.145

4.095

2.00

2.30

S-8209BAA-I8T1U

SNT-8A

4.100

4.000

4.050

4.000

2.50

2.70

Yes

S-8209BAM-I8T1U

SNT-8A

4.000

3.800

3.900

3.850

3.00

3.40

S-8209BAO-I8T1U

SNT-8A

4.300

4.200

2.30

3.00

S-8209BAP-I8T1U

SNT-8A

3.900

3.700

2.00

2.50

Yes

S-8209BAR-I8T1U

SNT-8A

4.230

4.170

4.180

2.80

3.00