S-8232ABFT-T2-G Seiko Instruments, S-8232ABFT-T2-G Datasheet

IC BATT PROTECTION 2CELL 8-TSSOP

S-8232ABFT-T2-G

Manufacturer Part Number
S-8232ABFT-T2-G
Description
IC BATT PROTECTION 2CELL 8-TSSOP
Manufacturer
Seiko Instruments
Datasheet

Specifications of S-8232ABFT-T2-G

Function
Over/Under Voltage Protection
Battery Type
Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)
Voltage - Supply
2 V ~ 16 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-TSSOP
Product
Li-Ion Protection
Output Voltage
0.3 V
Operating Supply Voltage
2 V to 16 V
Supply Current
12.7 uA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
728-1031-2

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
S-8232ABFT-T2-G
Manufacturer:
SEIKO/精工
Quantity:
20 000
www.sii-ic.com
© Seiko Instruments Inc., 1999-2010
The S-8232 series is a lithium-ion / lithium-polymer rechargeable battery protection IC incorporating high-
accuracy voltage detection circuit and delay circuit.
The S-8232 series is suitable for 2-cell serial lithium-ion / lithium-polymer battery packs.
(1) Internal high-accuracy voltage detection circuit
(2) High input-voltage device : Absolute maximum ratings 18 V.
(3) Wide operating voltage range : 2.0 V to 16 V
(4) The delay time for every detection can be set via an external capacitor.
(5) Two overcurrent detection levels (Protection for short-circuiting)
(6) Internal auxiliary over voltage detection circuit (Fail-safe for overcharge detection voltage)
(7) Internal charge circuit for 0 V battery (Unavailable is option)
(8) Low current consumption
(9) Lead-free, Sn100%, halogen-free
• Lithium-ion rechargeable battery packs
• Lithium- polymer rechargeable battery packs
• 8-Pin TSSOP
Features
Applications
Package
*1. Refer to “ Product Name Structure” for details.
• Overcharge detection voltage
• Overcharge release voltage
• Overdischarge detection voltage 1.70 V ± 80 mV to 2.60 V ± 80 mV
• Overdischarge release voltage
• Overcurrent detection voltage 1
• Operation mode
• Power-down mode 0.2 nA typ. 0.1 μA max. (− 40°C to + 85°C)
(Each delay time for Overcharge detection, Overdischarge detection, Overcurrent detection are
“Proportion of hundred to ten to one”.)
(The overcharge release voltage can be selected within the range where a difference from overcharge
detection voltage is 0 V to 0.3 V.)
(The overdischarge release voltage can be selected within the range where a difference from
overdischarge detection voltage is 0 V to 1.2 V.)
7.5 μA typ. 14.2 μA max. (− 40°C to + 85°C)
*1
3.85 V ± 25 mV to 4.60 V ± 25 mV
3.60 V ± 50 mV to 4.60 V ± 50 mV
1.70 V ± 100 mV to 3.80 V ± 100 mV Applicable in 50 mV step
0.07 V ± 20 mV to 0.30 V ± 20 mV
Seiko Instruments Inc.
FOR 2-SERIAL-CELL PACK
BATTERY PROTECTION IC
Applicable in 5 mV step
Applicable in 5 mV step
Applicable in 50 mV step
Applicable in 5 mV step
S-8232 Series
Rev.6.0
_00
1

Related parts for S-8232ABFT-T2-G

S-8232ABFT-T2-G Summary of contents

Page 1

... Lithium- polymer rechargeable battery packs Package • 8-Pin TSSOP BATTERY PROTECTION IC FOR 2-SERIAL-CELL PACK 3.85 V ± 4.60 V ± 3.60 V ± 4.60 V ± 1.70 V ± 100 mV to 3.80 V ± 100 mV Applicable step 0.07 V ± 0.30 V ± Seiko Instruments Inc. S-8232 Series Rev.6.0 _00 ...

Page 2

... S8232 Series Block Diagram VCC SENS VC VSS Remark Resistor (RCOL) is connected to the Nch transistor although CO pin serves as a CMOS output. For this, impedance becomes high when outputting “L” from CO pin. Refer to the “ Characteristics” for the impedance value. 2 Reference voltage 1 ...

Page 3

... Refer to the tape specifications. 2. Package Package Name 8-Pin TSSOP BATTERY PROTECTION IC FOR 2-SERIAL-CELL PACK Environmental code U: Lead-free (Sn 100%), halogen-free S: Lead-free, halogen-free G: Lead-free (for details, please contact our sales office) IC direction in tape specifications Package code FT : 8-Pin TSSOP Serial code Sequentially set from Drawing Code Package ...

Page 4

... V ± 4.325 V ± S-8232AIFT-T2-x 4.25 V ± S-8232AJFT-T2-x 4.20 V ± S-8232AKFT-T2-x 4.30 V ± S-8232ALFT-T2-x 4.19 V ± 4.19 V ± S-8232AMFT-T2-x S-8232ANFT-T2-x 4.325 V ± 4.325 V ± 4.30 V ± S-8232AOFT-T2-x 4.28 V ± S-8232APFT-T2-x S-8232ARFT-T2-x 4.325 V ± 4.325 V ± 4.295 V ± 4.20 V ± S-8232ASFT-T2-x* 4.125 V ± 4.125 V ± S-8232ATFT-T2-x 4.30 V ± ...

Page 5

... Please select products of environmental code = U for Sn 100%, halogen-free products. 4. The overdischarge detection voltage can be selected within the range from 1.7 to 3.0 V. When the overdischarge detection voltage is higher than 2.6 V, the overcharge detection voltage and the overcharge release voltage are limited as “Table 2”. ...

Page 6

... VSS FET gate connection pin for discharge 2 DO control (CMOS output) FET gate connection pin for charge control 3 CO (CMOS output) Detection pin for voltage between VSS and (Overcurrent detection pin) 5 VSS Input pin for negative power supply 6 ICT Capacitor connection pin for detection delay ...

Page 7

... Board size : 114.3 mm × 76.2 mm × t1.6 mm (2) Name : JEDEC STANDARD51-7 Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical damage. These values must therefore not be exceeded under any conditions. Figure 3 Power Dissipation of Package (When Mounted on Board) ...

Page 8

... Temperature coefficient 2 for detection voltage should be applied to overcurrent detection voltage. *4. Since products are not screened at high and low temperature, the specification for this temperature range is guaranteed by design, not tested in production. *5. The DO and CO pin logic are established at the operating voltage. ...

Page 9

... V battery charge starting charger voltage 0 V battery charge inhibition battery voltage 1, 2 *1. Since products are not screened at high and low temperature, the specification for this temperature range is guaranteed by design, not tested in production. *2. Auxiliary overcharge detection voltage is equal to the overcharge detection voltage times 1.11 for the products without overcharge hysteresis, and times 1 ...

Page 10

... V battery charge starting charger voltage 0 V battery charge inhibition battery voltage *1. Since products are not screened at high and low temperature, the specification for this temperature range is guaranteed by design, not tested in production. *2. Auxiliary overcharge detection voltage is equal to the overcharge detection voltage times 1.11 for the products without overcharge hysteresis, and times 1 ...

Page 11

... V under overdischarge status and measure current consumption. Current consumption I1 is the power-down current consumption (I (5) Test Condition 5, Test Circuit 2 Set 1.5 V, and V3 = 2.5 V under overdischarge status. ( − V3 the internal resistance between VCC and VM (RVCM). Set 3.6 V, and V3 = 1.1 V under overcurrent status the internal resistance between VSS and VM (RVSM) ...

Page 12

... Test Condition 7, Test Circuit 4 Set OFF 3.6 V and under normal status. Increase V4 from 0 V gradually. The V4 voltage when μA is the CO “H” voltage (V Set S1 = OFF ON 4. and V5 = 9.4 V under overcharge status. (V5 the CO pin internal resistance (RCO(L)). (8) Test Condition 8, Test Circuit 5 Set 3.6 V, and under normal status. Increase V1 from (V 0.2 V) immediately (within 10 μ ...

Page 13

... V3 Test Circuit 1 SENS VCC S-8232 Series VSS Test Circuit 3 SENS C3 = 0.22 μ F VCC S-8232 Series VSS Test Circuit 5 BATTERY PROTECTION IC FOR 2-SERIAL-CELL PACK ICT S1 VM ICT ICT VM Figure 4 Seiko Instruments Inc. S-8232 Series SENS I1 VCC S-8232 Series V1 ICT VSS Test Circuit 2 ...

Page 14

... The overcurrent status returns to the normal status when impedance between the EB− and EB+ pins (refer to Figure 8) is 200 MΩ or higher, by action such as releasing the load. When the load is released, the VM pin, which is shorted to the VSS pin by the RVSM resistor, goes back to the V ...

Page 15

... When using this optional function, a resistor of 4.7 MΩ is needed between the gate and the source of the charging control FET (refer to Figure 8). *1. When connecting batteries for the first time, the IC may fail to enter the normal status (is not in the status to charge). If so, once set the VM pin to VSS voltage (short between VM and VSS or connect a charger) to return to the normal status. *2. In this product with “ ...

Page 16

... Charger connection Load connection Delay *1 Status <1> *1. <1> Normal status <2> Over charge status <3> Over discharge status <4> Over current status Remark The charger is assumed to charge with a constant current battery V1 battery V2 over voltage detect V1 over voltage detect Delay <2> <1> <2> ...

Page 17

... Load connection Delay *1 Status <1> *1. <1> Normal status <2> Over charge status <3> Over discharge status <4> Over current status Remark The charger is assumed to charge with a constant current. BATTERY PROTECTION IC FOR 2-SERIAL-CELL PACK V2 battery V1 battery Delay <3> <1> Figure 6 Seiko Instruments Inc. ...

Page 18

... Charger connection Load connection delay = t *1 Status <1> *1. <1> Normal status <2> Over charge status <3> Over discharge status <4> Over current status Remark The charger is assumed to charge with a constant current battery delay = t IOV1 IOV2 <4> <1> Figure 7 Seiko Instruments Inc. ...

Page 19

... IOV1 overcurrent detection voltage 1 (V *4. A 4.7 MΩ resistor is needed for R5 to inhibit 0 V battery charging. Current consumption increases when the R5 resistance is below 4.7 MΩ. R5 should be connected when the product has 0 V battery charging inhibition. Caution 1. The above constants may be changed without notice. ...

Page 20

... Since voltage difference between two batteries is large in this situation, the S-8232 Series immediately stops the charging of the other battery to reduce voltage difference. This action improves the safety of a battery pack and dose not do any harm to the pack. 20 ...

Page 21

... Rev6.0 _00 • After the overcurrent detection, the load was connected for a long time, even if one of the battery voltage became lower than overdischarge detection voltage (V long as the load is connected. Therefore the IC’s current consumption at the one of the battery voltage is lower than the overdischarge detection voltage is same as normal status current consumption (I to the Figure 11) ...

Page 22

... BATTERY PROTECTION IC FOR 2-SERIAL-CELL PACK S8232 Series Characteristics (Typical Data) 1. Detection Voltage Temperature Characteristics Overcharge detection voltage1 vs. temperature 4.4 4.3 4.2 -40 - [°C] Overcharge release voltage1 vs. temperature 4.1 4 3.9 3.9 -40 -40 -20 - [°C] Auxiliary overcharge detection voltage1 vs. temperature 5.45 5.35 5.25 -40 - [°C] 22 Overcharge detection voltage2 vs. temperature = 4 ...

Page 23

... Ta [°C] Overdischarge release voltage1 vs. temperature 2.7 2.6 2.5 -40 - [°C] Overcurrent1 detection voltage vs. temperature 0.12 0.10 0.08 -40 - [°C] BATTERY PROTECTION IC FOR 2-SERIAL-CELL PACK Overdischarge detection voltage2 vs. temperature = 2. DD1 2.1 1 100 Overdischarge release voltage1 vs. temperature = 2. DU1 2.7 2.6 2 100 Overcurrent1 detection voltage vs. temperature = 0 ...

Page 24

... Delay Time Temperature Characteristics Overcharge detection1 time vs. temperature 1.5 1 0.5 -40 - [°C] Overcurrent1 detection time vs. temperature -40 - [°C Caution Please design all applications of the S-8232 Series with safety in mind. 24 Current consumption vs. temperature in power-down mode = 7 100 Overcharge detection1 time vs. temperature C3 = 0.22 μ 100 C3 = 0.22 μ 100 ] Seiko Instruments Inc ...

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... Seiko Instruments Inc. is strictly prohibited. • The products described herein cannot be used as part of any device or equipment affecting the human body, such as exercise equipment, medical equipment, security systems, gas equipment, or any apparatus installed in airplanes and other vehicles, without prior written permission of Seiko Instruments Inc. ...

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