s-8209baa-t8t1g Seiko Instruments Inc., s-8209baa-t8t1g Datasheet

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s-8209baa-t8t1g

Manufacturer Part Number
s-8209baa-t8t1g
Description
Battery Protection Ic With Cell-balance Function
Manufacturer
Seiko Instruments Inc.
Datasheet
Rev.1.0
BATTERY PROTECTION IC
WITH CELL-BALANCE FUNCTION
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
• Lithium-ion rechargeable battery packs
• Lithium polymer rechargeable battery packs
Features
Applications
Packages
SNT-8A
8-Pin TSSOP
• Overcharge detection voltage
• Overcharge release voltage
• Cell-balance detection voltage
• Cell-balance release voltage
• Overdischarge detection voltage
• Overdischarge detection voltage
*1. Overcharge release voltage = Overcharge detection voltage − Overcharge hysteresis voltage
*2. Overcharge detection voltage > Cell-balance detection voltage
*3. Cell-balance release voltage = Cell-balance detection voltage − Cell-balance hysteresis voltage
*4. Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis voltage
Package Name
High-accuracy voltage detection circuit
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
Low current consumption
Small package
Lead-free product
(Overcharge hysteresis voltage is selectable in 0 V, or in 0.1 V to 0.4 V in 50 mV step.)
(Overcharge detection voltage is always set higher than Cell-balance detection voltage)
(Cell-balance hysteresis voltage is selectable in 0 V, or in 0.1 V to 0.4 V in 50 mV step.)
(Overdischarge hysteresis voltage is selectable in 0 V, in 0.1 V to 0.7 V in 100 mV step.)
_00
PH008-A
Package
FT008-A
3.9 V to 4.4 V (5 mV step)
3.8 V to 4.4 V
3.9 V to 4.4 V (5 mV step)
3.8 V to 4.4 V
2.0 V to 3.0 V (10 mV step)
2.0 V to 3.4 V
−40°C to +85°C
7.0 µA max.
SNT-8A, 8-Pin TSSOP
Seiko Instruments Inc.
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.
PH008-A
FT008-E
Tape
*1
*3
*4
Drawing Code
*2
Accuracy ±25 mV
Accuracy ±50 mV
Accuracy ±25 mV
Accuracy ±50 mV
Accuracy ±50 mV
Accuracy ±100 mV
PH008-A
FT008-E
Reel
S-8209B Series
PH008-A
Land
1

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s-8209baa-t8t1g Summary of contents

Page 1

... Cell-balance detection voltage) *3. Cell-balance release voltage = Cell-balance detection voltage − Cell-balance hysteresis voltage (Cell-balance hysteresis voltage is selectable 0 0 step.) *4. Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis voltage (Overdischarge hysteresis voltage is selectable 0 0 100 mV step.) Applications • ...

Page 2

... BATTERY PROTECTION IC WITH CELL-BALANCE FUNCTION S-8209B Series Block Diagram CTLD 400 nA CTLC 400 nA Remark The diodes in the IC are parasitic diodes. 2 Delay circuit Overcharge detection comparator + − Cell-balance detection comparator + − Overdischarge detection comparator Figure 1 Seiko Instruments Inc. Rev.1.0 8.31 MΩ + − ...

Page 3

... Remark Please contact our sales office for the products with detection voltage value other than those specified above. (2) 8-Pin TSSOP Overcharge detection Product name / Item voltage S-8209BAA-T8T1G 4.100 V Remark Please contact our sales office for the products with detection voltage value other than those specified above. BATTERY PROTECTION IC WITH CELL-BALANCE FUNCTION IC direction of tape specifications I8T1 : SNT-8A, Tape ...

Page 4

... VSS Remark For the external views, refer to the package drawings. Seiko Instruments Inc. Table 3 Description Pin for charge control Pin for dischage control Connection pin for input positive power supply, for battery’s positive voltage Connection pin to capacitor for overcharge ...

Page 5

... Board size: (2) Board 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 4 Power Dissipation of Package (When mounted on board) ...

Page 6

... Source current CO I COH Source current DO I DOH *1. In the S-8209B Series, users are able to set delay time for the output pins. By using the following formula, delay time is calculated with the value of CDT pin’s resistance in the IC (R [s] = −ln (1− ...

Page 7

... CO DO 100 VSS kΩ VSS Seiko Instruments Inc. S-8209B Series CTLC CTLD S-8209B Series VDD CDT A COM Figure 6 Test circuit 2 CTLC CB CTLD CO S-8209B Series VDD DO CDT VSS COM Figure 8 Test circuit 4 A CTLC A CTLD S-8209B Series VDD CDT COM ...

Page 8

... BATTERY PROTECTION IC WITH CELL-BALANCE FUNCTION S-8209B Series CTLC CB CTLD CO S-8209B Series DO VDD CDT VSS COM Figure 11 Test circuit Seiko Instruments Inc. Rev.1.0 _00 ...

Page 9

... BATTERY PROTECTION IC WITH CELL-BALANCE FUNCTION Rev.1.0 _00 Operation Figure 12 shows the operation transition of S-8209B High High-Z Charge * ≥ High ≥ High ≥ Discharge High *1. Operation of charge cell-balance function *2 ...

Page 10

... MΩ (Typ.) × The electric charge in C CDT The delay time that users have set for the CO pin, as seen above, is settable for each output pin DO, CB. 10 level; the voltage between VDD and VSS ( and is less than the overcharge detection voltage ( > ...

Page 11

... Example of Protection Circuit with S-8209B for Series Multi-Cells Figure 13 shows the example of protection circuit with the S-8209B for series multi-cells. Regarding the operation of protection circuit with the S-8209B for series-connected batteries, refer to the application note “S-8209B Series Usage Guidelines”. ...

Page 12

... Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic protection circuit. • SII claims no responsibility for any and all disputes arising out connection with any infringement by products including this IC of patents owned by a third party. ...

Page 13

... Rev.1.0 _00 Characteristics (Typical Data) 1. Current consumption − Ta (1) I OPE −40 − Overcharge detection / release voltages, Cell-balance detection / release voltages, Overdischarge detection / release voltages − 4.12 4.11 4.10 4.09 4.08 4.07 −40 − [°C] − 4.07 4.06 4.05 4.04 4.03 4.02 −40 − [°C] − ...

Page 14

... CTLC / CTLD pin current − ( 3.5 V) CTLCL DS 600 500 400 300 200 100 0 −40 − CDT pin resistance / CDT pin detection voltage − Ta (1) R CDT 12.0 10.0 8.0 6.0 4.0 2.0 0 −40 − (2) I 1.5 2.0 2.5 3.0 3.5 V [V] CO (4) I 3.0 3.5 4.0 4 ...

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... Use of the information described herein for other purposes and/or reproduction or copying without the express permission of 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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