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Número de pieza | S-8209B | |
Descripción | Battery Protection IC | |
Fabricantes | Seiko Instruments | |
Logotipo | ||
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No Preview Available ! S-8209B Series
www.sii-ic.com
© Seiko Instruments Inc., 2008-2015
BATTERY PROTECTION IC
WITH CELL-BALANCE FUNCTION
Rev.3.4_00
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.
The S-8209B Series 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.
Features
• High-accuracy voltage detection circuit
Overcharge detection voltage*1
Overcharge release voltage*1
Cell-balance detection voltage*1
Cell-balance release voltage*1
3.55 V to 4.40 V (5 mV step)
3.50 V to 4.40 V*2
3.55 V to 4.40 V (5 mV step)*3
3.50 V to 4.40 V*4
Overdischarge detection voltage
Overdischarge release voltage
2.0 V to 3.0 V (10 mV step)
2.0 V to 3.4 V*5
• Settable delay time by external capacitor for output pin
• Control charging, discharging, cell-balance by CTLC pin, CTLD pin
• Two types of cell-balance function; charge / discharge*6
• Wide range of operation temperature
Ta = −40°C to +85°C
• Low current consumption
• Lead-free, Sn 100%, halogen-free*7
7.0 μA max.
Accuracy ±25 mV
Accuracy ±50 mV
Accuracy ±25 mV
Accuracy ±50 mV
Accuracy ±50 mV
Accuracy ±100 mV
*1. Regarding selection of overcharge detection voltage, overcharge release voltage, cell-balance detection voltage
and cell-balance release voltage, refer to Remark 3 in "3. Product name list" of " Product Name Structure".
*2. Overcharge release voltage = Overcharge detection voltage − Overcharge hysteresis voltage
(Overcharge hysteresis voltage is selectable in 0 V to 0.4 V in 50 mV step.)
*3. Select as to overcharge detection voltage > cell-balance detection voltage.
*4. Cell-balance release voltage = Cell-balance detection voltage − Cell-balance hysteresis voltage
(Cell-balance hysteresis voltage is selectable in 0 V to 0.4 V in 50 mV step.)
*5. Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis voltage
(Overdischarge hysteresis voltage is selectable in 0 V to 0.7 V in 100 mV step.)
*6. Also available the product without discharge cell-balance function
*7. Refer to " Product Name Structure" for details.
Applications
• Lithium-ion rechargeable battery pack
• Lithium polymer rechargeable battery pack
Packages
• SNT-8A
• 8-Pin TSSOP
Seiko Instruments Inc.
1
1 page Rev.3.4_00
BATTERY PROTECTION IC WITH CELL-BALANCE FUNCTION
S-8209B Series
3. Please contact our sales office for the products with detection voltage value other than those specified
above.
Users are able to select the overcharge detection voltage, overcharge release voltage, cell-balance
detection voltage and cell-balance release voltage from the range shown in Figure 2 and Figure 3.
Users are able to select how to combine the overcharge detection voltage (VCU) and the overcharge release
voltage (VCL) from the range A or B shown in Figure 2*1.
Similarly, select how to combine the cell-balance detection voltage (VBU) and the cell-balance release
voltage (VBL) from the range of C or D in Figure 3*2.
In selecting the combination of VCU and VCL from the range A, select the combination of VBU and VBL from
the range C. Similarly, in selecting the combination of VCU and VCL from the B range, select the combination
of VBU and VBL from the range D*3.
4.40 4.40
4.20 A 4.20 C
3.90
B
3.90
D
3.55 3.55
3.50 3.55
3.80 3.90 4.00
Overcharge release voltage (VCL) [V]
4.40
3.50 3.55
3.80 3.90 4.00
Cell-balance release voltage (VBL) [V]
4.40
Figure 2
Figure 3
*1. Users are able to select the overcharge hysteresis voltage (VCU − VCL) in 0 V to 0.4 V, in 50 mV step.
*2. Users are able to select the cell-balancce hysteresis voltage (VBU − VBL) in 0 V to 0.4 V, in 50 mV step.
*3. Select as to set VCU > VBU.
Seiko Instruments Inc.
5
5 Page Rev.3.4_00
BATTERY PROTECTION IC WITH CELL-BALANCE FUNCTION
S-8209B Series
Operation
Figure 15 shows the operation transition of the S-8209B Series
[Overcharge status]
Charge
CO = High-Z
DO = High-Z
CB = H *1
VCTLD ≥ VCTLDH
VCTLD ≤ VCTLDL
CO = High-Z
DO = H
CB = H *1
VCTLC ≥ VCTLCH
VCTLC ≤ VCTLCL
CO = High-Z
DO = H
CB = H *1
VDS ≥ VCU
VDS ≤ VCL
VDS ≥ VCU
VDS ≤ VCL
VDS ≤ VCL
CO = H
DO = High-Z
CB = H *1
VCTLD ≥ VCTLDH
VCTLD ≤ VCTLDL
CO = H
DO = H
CB = H *1
VCTLC ≥ VCTLCH
VCTLC ≤ VCTLCL
CO = High-Z
DO = H
CB = H *1
VDS ≥ VBU
VDS ≤ VBL
VDS ≥ VBU
[Normal status]
VDS ≤ VBL
CO = H
DO = High-Z
CB = H *2
VCTLD ≥ VCTLDH
VCTLD ≤ VCTLDL
CO = H
DO = H
CB = L
VCTLC ≥ VCTLCH
VCTLC ≤ VCTLCL
VDS ≤ VBL
CO = High-Z
DO = H
CB = L
Discharge
VDS ≥ VDU
CO = H
DO = High-Z
CB = L
VDS ≥ VDU
[Overdischarge status]
VDS ≤ VDL
VCTLD ≥ VCTLDH
VCTLD ≤ VCTLDL
CO = H
DO = High-Z
CB = L
VCTLC ≥ VCTLCH
VCTLC ≤ VCTLCL
VDS ≤ VDL
CO = High-Z
DO = High-Z
CB = L
*1. Operation of charge cell-balance function
*2. Operation of discharge cell-balance function
VDS < 1.5V
Indefinite status
CO = Indefinite
DO = Indefinite
CB = Indefinite
Figure 15 Operation Transition
Seiko Instruments Inc.
11
11 Page |
Páginas | Total 26 Páginas | |
PDF Descargar | [ Datasheet S-8209B.PDF ] |
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