S-8204BAC-TCT1G Seiko Instruments, S-8204BAC-TCT1G Datasheet

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S-8204BAC-TCT1G

Manufacturer Part Number
S-8204BAC-TCT1G
Description
Battery Management Battery Prot IC 3 or 4 Cell
Manufacturer
Seiko Instruments
Datasheet

Specifications of S-8204BAC-TCT1G

Product
Li-Ion Protection
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
© Seiko Instruments Inc., 2007-2010
The S-8204A Series includes a voltage detection circuit with high accuracy and a delay circuit, in single use,
makes it possible for users to monitor the status of 3-series or 4-series cell lithium-ion rechargeable battery. By
switching the voltage level which is applied to the SEL pin, users are able to use this IC either for 3-series or 4-
series cell pack.
By cascade connection using this IC, it is also possible to protect 5-series or more cells
www.sii-ic.com
ion battery pack.
*1. Refer to the usage guideline for connection examples of protection circuit with 5-series cell.
(1) High-accuracy voltage detection for each cell
(2) Discharge overcurrent detection in 3-step
(3) Charge overcurrent detection
(4) Settable by external capacitor; Overcharge detection delay time, Overdischarge detection delay time,
(5) Switchable between 3-series and 4-series cell by using the SEL pin
(6) Independent charging and discharge control by the control pins
(7) Withstand voltage element
(8) Wide range of operation voltage
(9) Wide range of operation temperature
(10) Low current consumption
(11) Lead-free, Sn 100%, halogen-free
• Rechargeable lithium-ion battery packs
• 16-Pin TSSOP
Features
Application
Package
*1. Overcharge hysteresis voltage n (n = 1 to 4) is selectable in 0 V, or in 0.1 V to 0.4 V in 50 mV step.
*3. Refer to “ Product Name Structure” for details.
*2. Overdischarge hysteresis voltage n (n = 1 to 4) is selectable in 0 V, or in 0.2 V to 0.7 V in 100 mV step.
(Overcharge hysteresis voltage = Overcharge detection voltage − Overcharge release voltage)
(Overdischarge hysteresis voltage = Overdischarge release voltage − Overdischarge detection voltage)
• Overcharge detection voltage n (n = 1 to 4)
• Overcharge release voltage n (n = 1 to 4)
• Overdischarge detection voltage n (n = 1 to 4) 2.0 V to 3.0 V (100 mV step)
• Overdischarge release voltage n (n = 1 to 4)
• Discharge overcurrent detection voltage 1
• Discharge overcurrent detection voltage 2
• Short circuit detection voltage
• Charge overcurrent detection voltage
Discharge overcurrent detection delay time 1, Discharge overcurrent detection delay time 2, Charge
overcurrent delay time
(Short circuit detection voltage delay time is internally fixed.)
• Operation mode
• Power-down mode
*3
33 μA max. (+25°C)
0.1 μA max. (+25°C)
Seiko Instruments Inc.
FOR 3-SERIES OR 4-SERIES CELL PACK
Absolute maximum rating : 24 V
2 V to 22 V
−40°C to +85°C
3.8 V to 4.6 V (50 mV step)
3.6 V to 4.6 V
2.0 V to 3.4 V
0.05 V to 0.30 V (50 mV step)
0.5 V (fixed)
1.0 V (fixed)
−0.25 V to −0.05 V (50 mV step) Accuracy ±30 mV
*1
*2
BATTERY PROTECTION IC
S-8204A Series
*1
Accuracy ±25 mV
Accuracy ±50 mV
Accuracy ±80 mV
Accuracy ±100 mV
Accuracy ±15 mV
Accuracy ±100 mV
Accuracy ±300 mV
rechargeable lithium-
Rev.3.0
_00
1

Related parts for S-8204BAC-TCT1G

S-8204BAC-TCT1G Summary of contents

Page 1

... Operation mode • Power-down mode (11) Lead-free, Sn 100%, halogen-free *1. Overcharge hysteresis voltage selectable 0 0 step. (Overcharge hysteresis voltage = Overcharge detection voltage − Overcharge release voltage) *2. Overdischarge hysteresis voltage selectable 0 0 100 mV step. (Overdischarge hysteresis voltage = Overdischarge release voltage − Overdischarge detection voltage) *3. Refer to “ ...

Page 2

... BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK S-8204A Series Block Diagram COP R VMD VMP R VMS DOP VINI CDT CCT CIT SEL Remark Diodes in the figure are parasitic diodes. 2 Control circuit Delay circuit Delay circuit Delay circuit Delay circuit + − Discharge overcurrent 1 + − ...

Page 3

... S-8204AAC-TCT1y 4.200 ± 0.025 V 4.100 ± 0.050 V S-8204AAD-TCT1y 3.800 ± 0.025 V 3.600 ± 0.050 V S-8204AAE-TCT1y 4.250 ± 0.025 V 4.050 ± 0.050 V Remark 1. Please contact our sales office for products with detection voltage values other than those specified above Please select products of environmental code = U for Sn 100%, halogen-free products. ...

Page 4

... Pin for voltage detection between VDD and VMP FET gate connection pin for discharge control FET 3 DOP (CMOS output) Pin for voltage detection between VSS and VINI • Pin for discharge overcurrent detection 1,2/Pin for short circuit detection 4 VINI • Pin for charge overcurrent detection 5 CDT ...

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 3 Power Dissipation of Package (When Mounted on Board) ...

Page 6

... BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK S-8204A Series Electrical Characteristics Item Symbol [ DETECTION VOLTAGE ] Overcharge detection voltage Overcharge release voltage Overdischarge detection voltage Overdischarge release voltage Discharge overcurrent detection V voltage 1 Discharge overcurrent detection V voltage 2 Short circuit detection voltage V Charge overcurrent detection ...

Page 7

... Voltage temperature coefficient 1 : Overcharge detection voltage *2. Voltage temperature coefficient 2 : Discharge overcurrent detection voltage 1 *3. Since products are not screened at high and low temperature, the specification for this temperature range is guaranteed by design, not tested in production. *4. Delay time function is described in “ Operation” in detail. ...

Page 8

... BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK S-8204A Series Test Circuit In this chapter, describing how to test the S-8204A Series. In case of selecting to use it for 4-series cell battery, set SEL pin = V level. For 3-series cell battery, set SEL pin = V DD VC4 pin. 1. Current consumption during operation and power-down (Test circuit 1) 1 ...

Page 9

... SEL Input Voltage “H” (V Start from the initial status, set Confirm the DOP is in “H”. After that, decreasing the SEL pin’s voltage gradually, the SEL pin’s voltage when the DOP pin’s voltage is set to “L”; is the SEL input voltage “ ...

Page 10

... V battery or Battery voltage for inhibit charging 0 V battery is applied to each product Charger Voltage for Start Charging 0 V Battery (V battery) In this Charger voltage for start charging 0V battery, when max., the COP pin’s voltage Battery Voltage for Inhibit Charging 0 V Battery (V charging 0V battery) In this Battery voltage for inhibit charging 0 V battery, when the COP pin’ ...

Page 11

... In the initial status, a current which flows in the SEL pin is the SEL pin current “H” (I current which flows in the SEL pin when setting COP Pin Leakage Current (I Start from the initial status, set V sink current (I ). After that, a current which flows in the COP pin when setting COL 5 is; the COP pin leakage current (I ...

Page 12

... BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK S-8204A Series S-8204A 1 COP CTLC 2 VMP CTLD 3 DOP VDD VC1 4 VINI VC2 5 CDT 6 CCT VC3 VC4 7 CIT 8 VSS SEL Figure 4 Test Circuit 1 S-8204A 1 COP CTLC 16 2 VMP CTLD 15 3 DOP 14 VDD 4 VINI VC1 13 5 CDT ...

Page 13

... BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK Rev.3.0 _00 V S-8204A 1 COP CTLC 16 2 VMP 15 CTLD 14 3 DOP VDD 4 VINI VC1 13 VC2 5 CDT 12 6 CCT VC3 11 7 CIT VC4 10 8 SEL VSS Figure 7 Test Circuit 4 S-8204A A 1 COP CTLC VMP CTLD DOP ...

Page 14

... Overcharge Status In the S-8204A Series, when any voltage of the batteries increases to the level of V pin is set in high impedance. This is the overcharge status. The COP pin is pulled external resistor so that the charge FET is turned off and it stops charging. This overcharge status is released if either condition satisfied; ...

Page 15

... Discharge Overcurrent Status In the S-8204A Series, in batteries in the normal status, the discharging current increases more than a certain value result, if the status in which the VINI pin voltage increases to the level of V more, the DOP pin gets the V is turned off and it stops discharging. ...

Page 16

... IC and an external capacitor. In the overchage detection, when any voltage of the batteries gets V charging to the CCT pin’s capacitor (C the COP pin is set in high impedance if the voltage at the CCT pin reaches the CCT pin detection voltage (V ). This period is overcharge detection delay time (t ...

Page 17

... The S-8204A Series has two pins to control. The CTLC pin controls the output voltage from the COP pin, the CTLD pin controls the output voltage from the DOP pin. Thus it is possible for users to control the output voltages from the COP pin and DOP pin independently. These controls precede the battery protection circuit. *1. High ...

Page 18

... V4-cell is inhibited by setting the SEL pin “L”, so that short-circuiting the V4 cell does not allow the overdischarge detection. This setting makes it possible to use the S-8204A Series for 3-cell protection. The SEL pin precedes the battery protection circuit. Be sure to use the SEL pin in “H” or “L”. ...

Page 19

... VMP pin voltage 1/2× Charger connection Load connection *1 Status *1. < 1 > : Normal status < 2 > : Overcharge status < 3 > : Overdischarge status < 4 > : Power-down status Remark The charger is assumed to charge with a constant current. V charger. High-Z Overcharge detection delay time ( <1> <2> <1> Figure 9 Seiko Instruments Inc. ...

Page 20

... DIOV2 VINI pin voltage V DIOV1 V SS Load connection detection delay time 1(t *1 Status *1. < 1 > : Normal status < 2 > : Discharge overcurrent status Remark The charger is assumed to charge with a constant current. V the charger High-Z Discharge overcurrent Discharge overcurrent ) detection delay time 2 (t DIOV1 < ...

Page 21

... DIOV1 CIOV Charger connection Charge overcurrent detection <4> *1 Status *1. < 1 > : Normal status < 2 > : Charge overcurrent status < 3 > : Overdischarge status < 4 > : Power-down status Remark The charger is assumed to charge with a constant current. V the charger High-Z delay time (t ) CIOV <3> <1> <2> Figure 11 Seiko Instruments Inc ...

Page 22

... BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK S-8204A Series Connection Examples of Battery Protection Series Cell Charging FET EB VMP COP R VINI C CDT C CCT EB− Series Cell Charging FET EB VMP COP R VINI C CDT C CCT EB− 22 Discharging FET R DOP S-8204A 1 COP CTLC 16 2 VMP ...

Page 23

... BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK Rev.3.0 _00 3. 7- Series Cell Charging EB+ R COP EB EB INV2 INV1 EB− Discharging FET FET R D DOP COP 1 COP 2 VMP 3 DOP INV3 4 VINI R VINI1 5 CDT C CDT1 6 CCT C CCT1 7 CIT R CIT1 8 SEL R S-8204A (1) SEL1 R R IFD ...

Page 24

... Batteries can be connected in any order; however, there may be cases when discharging cannot be performed when a battery is connected. In such a case, short the VMP pin and VDD pin or connect the battery charger to return the IC to the normal mode. • If both an overcharge battery and an overdischarge battery are included among the whole batteries, the condition is set in overcharge status and overdischarge status ...

Page 25

... I vs. V PDN DS 0.10 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0. Overcharge Detection / Release Voltage, Overdischarge Detection / Release Voltage, Overcurrent Detection Voltage 2 4.375 4.370 4.365 4.360 4.355 4.350 4.345 4.340 4.335 4.330 4.325 −40 −25 2 ...

Page 26

... BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK S-8204A Series 2.5 V vs. V DIOV1 DS 0.30 0.29 0.28 0.27 0.26 0.25 0.24 0.23 0.22 0.21 0. 2.7 V vs. V DIOV2 DS 0.60 0.58 0.56 0.54 0.52 0.50 0.48 0.46 0.44 0.42 0. 2.9 V vs. V SHORT DS 1.3 1.2 1.1 1 ...

Page 27

... BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK Rev.3.0 _00 3. CCT pin Internal Resistance / Detection Voltage, CDT pin Internal Resistance / Detection Voltage, CIT pin Internal Resistance / Detection Voltage and Short circuit Detection Voltage Delay Time − INC 12.0 11.0 10.0 9.0 8.0 7 ...

Page 28

... BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK S-8204A Series 4. COP / DOP Pin 4.1 I vs. V COH COP 0.10 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0. 4.3 I vs. V DOH DOP 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0 1.8 28 4.2 I ...

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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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