S-8204BAD-TCT1S

Manufacturer Part NumberS-8204BAD-TCT1S
DescriptionBattery Management BATTERY PROT IC 3-4 SERIES CELL PCK
ManufacturerSeiko Instruments
S-8204BAD-TCT1S datasheet
 


Specifications of S-8204BAD-TCT1S

Lead Free Status / Rohs StatusLead free / RoHS Compliant  
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© Seiko Instruments Inc., 2008-2011
The S-8204B 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
pack.
*1. Refer to the usage guideline for connection examples of protection circuit with 5-series cell.
Features
(1)
High-accuracy voltage detection for each cell
• Overcharge detection voltage n (n = 1 to 4)
• Overcharge release voltage n (n = 1 to 4)
• Overdischarge detection voltage n (n = 1 to 4)
• Overdischarge release voltage n (n = 1 to 4)
(2)
Discharge overcurrent detection in 3-step
• Discharge overcurrent detection voltage 1
• Discharge overcurrent detection voltage 2
• Short circuit detection voltage
(3)
Settable by external capacitor; Overcharge detection delay time, Overdischarge detection delay time, Discharge
overcurrent detection delay time 1, Discharge overcurrent detection delay time 2
(Short circuit detection voltage delay time is internally fixed.)
(4)
Switchable between 3-series and 4-series cell by using the SEL pin
(5)
Independent charging and discharge control by the control pins
(6)
Withstand voltage element
(7)
Wide range of operation voltage
(8)
Wide range of operation temperature
(9)
Low current consumption
• Operation mode
• Power-down mode
(10) Lead-free, Sn 100%, halogen-free
*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.
(Overcharge hysteresis voltage = Overcharge detection voltage − Overcharge release voltage)
*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.
(Overdischarge hysteresis voltage = Overdischarge release voltage − Overdischarge detection voltage)
*3. Refer to “ Product Name Structure” for details.
Application
• Rechargeable lithium-ion battery packs
Package
• 16-Pin TSSOP
FOR 3-SERIES OR 4-SERIES CELL PACK
3.65 V to 4.6 V (50 mV step)
3.5 V to 4.6 V
2.0 V to 3.0 V (100 mV step)
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)
Absolute maximum rating : 24 V
2 V to 22 V
−40°C to +85°C
μ
33
A max. (+25°C)
μ
0.1
A max. (+25°C)
*3
Seiko Instruments Inc.
S-8204B Series
BATTERY PROTECTION IC
Rev.3.2
*1
rechargeable lithium-ion battery
Accuracy ±25 mV
*1
Accuracy ±50 mV
Accuracy ±80 mV
*2
Accuracy ±100 mV
Accuracy ±15 mV
Accuracy ±100 mV
Accuracy ±300 mV
_00
1

S-8204BAD-TCT1S Summary of contents

  • Page 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 “ Product Name Structure” for details. ...

  • Page 2

    ... BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK S-8204B 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 + − Discharge overcurrent 1 + − Discharge ...

  • Page 3

    ... BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK Rev.3.2 _00 Product Name Structure 1. Product Name S-8204B xx − xxxx x *1. Refer to the tape specifications. *2. Refer to “3. Product Name List”. 2. Package Package Name Environmental code = S 16-Pin TSSOP Environmental code = U Environmental code U : Lead-free (Sn 100%), halogen-free ...

  • Page 4

    ... S-8204BBF-TCT1y 4.250 V S-8204BBG-TCT1y 4.250 V S-8204BBH-TCT1y 4.250 V S-8204BBI-TCT1U 4.250 V S-8204BBJ-TCT1U 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. 4 Table 1 Overcharge Overdischarge Overdischarge Release Detection ...

  • Page 5

    ... DOP (CMOS output) Pin for voltage detection between VSS and VINI 4 VINI Pin for discharge overcurrent detection 1, 2/Pin for short circuit detection voltage 5 CDT Capacitor connection pin for delay for overdischarge detection voltage 6 CCT Capacitor connection pin for delay for overcharge detection voltage ...

  • Page 6

    ... 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 7

    ... BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK Rev.3.2 _00 Electrical Characteristics Item 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 *1 Temperature coefficient 1 ...

  • Page 8

    ... 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 9

    ... BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK Rev.3.2 _00 Test Circuit In this chapter, describing how to test the S-8204B 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 = Current consumption during operation and power-down (Test circuit 1) 1 ...

  • Page 10

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

  • Page 11

    ... VMS 5. 3 VC1 Pin Current (I ), VC2 Pin Current (I VC1 In the initial status, each current flows in the VC1 pin, VC2 pin, VC3 pin, VC4 pin is the VC1 pin current (I VC2 pin current (I ), the VC3 pin current (I VC2 5. 4 CTLC Pin Current “H” the initial status, a current which flows in the CTLC pin is the CTLC pin current “ ...

  • Page 12

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

  • Page 13

    ... BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK Rev.3.2 _00 S-8204B 1 COP CTLC 16 2 VMP CTLD 15 3 DOP VDD 14 4 VINI VC1 13 VC2 5 CDT 12 VC3 6 CCT 11 7 CIT VC4 10 8 VSS SEL 9 Figure 4 Test Circuit 1 S-8204B 1 COP CTLC 16 2 VMP CTLD 15 VDD ...

  • Page 14

    ... BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK S-8204B Series 14 S-8204B 1 COP 16 A CTLC 2 VMP CTLD DOP VDD VINI VC1 13 5 CDT VC2 12 6 CCT VC3 11 VC4 7 CIT 10 8 VSS SEL 9 A Figure 7 Test Circuit 4 Seiko Instruments Inc. Rev.3 0.1 μ F _00 ...

  • Page 15

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

  • Page 16

    ... The discharge overcurrent status is released if the following condition is satisfied. (1) The VMP pin voltage gets Battery Charge Function In this IC, regarding how to charge a discharged battery (0 V battery), users are able to select either function of the two mentioned below. (1) Allow to charge battery (enable to charge battery) ...

  • Page 17

    ... In the S-8204B Series, users are able to set delay time for the period; from detecting any voltage of the batteries or detecting changes in the voltage at the VINI pin, to the output to the COP, DOP pin. Each delay time is determined by a resistor in the IC and an external capacitor. ...

  • Page 18

    ... The S-8204B 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. ...

  • Page 19

    ... The overdischarge detection for 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-8204B Series for 3-cell protection. The control by this SEL pin precedes the battery protection circuit. Be sure to use the SEL pin in “H” or “L”. *1. High; SEL ≥ V *2. Low ...

  • Page 20

    ... 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 High-Z Overcharge detection delay time ( <1> <2> <1> Figure 8 Seiko Instruments Inc. Rev.3.2 ...

  • Page 21

    ... VMP pin voltage 1/2× Charger connection Load connection *1 Status *1. <1> : Normal status <2> : Overcharge status <3> : Overdischarge status Remark The charger is assumed to charge with a constant current. V High-Z Overcharge detection delay time ( <1> <2> <1> Figure 9 Seiko Instruments Inc. S-8204B Series ...

  • Page 22

    ... DIOV2 VINI pin voltage V DIOV1 V SS Charger connection Load connection detecion delay time1 (t *1 Status *1. <1> : Normal status <2> : Discharge overcurrent status Remark The charger is assumed to charge with a constant current High-Z Discharge overcurrent Discharge overcurrent ) detecion delay time2 (t DIOV1 <1> <2> ...

  • Page 23

    ... BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK Rev.3.2 _00 Connection Examples of Battery Protection IC 1. 4-Series Cell (with protect overcurrent function) EB VMP R ATL COP EB − EB− Charging Discharging FET 1 COP 2 VMP 3 DOP 4 VINI S-8204B 5 CDT 6 CCT C CDT 7 CIT C 8 SEL C CIT CCT ...

  • Page 24

    ... BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK S-8204B Series 2. 7-Series Cell (cascade connection without protect overcurrent function) EB+ R VMP1 R VINI1 R IFC R R VMP2 R VINI2 D COP R DOP R COP EB− Charging Discharging FET FET 24 1 COP 2 VMP 3 DOP 4 VINI 5 CDT 6 CCT C CDT1 7 CIT ...

  • Page 25

    ... BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK Rev.3.2 _00 3. 8-Series Cell (cascade connection with protect overcurrent function) EB INV2 ATL COP R R COP EB − EB− Charging FET 1 COP 2 VMP R IFC 3 DOP 4 VINI R S-8204B IFD 5 CDT R VINI1 6 CCT C CCT1 7 CIT C CDT1 8 SEL R CIT1 ...

  • Page 26

    ... Contact our sales office in case the constants should be set to other than 47 μF • Ω has not been confirmed whether the operation is normal in circuits other than the above example of connection. In addition, the example of connection shown above and the constants do not guarantee proper operation ...

  • Page 27

    ... 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 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. Therefore either charging or discharging is impossible. • ...

  • Page 28

    ... I vs. V PDN DS 0.10 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0. Overcharge Detection / Release Voltage, Overdischarge Detection / Release Voltage, Overcurrent Detection Voltage vs 4.375 4.370 4.365 4.360 4.355 4.350 4.345 4.340 4.335 4.330 4.325 −40 − vs 2.80 2.78 2.76 2.74 2.72 2.70 2 ...

  • Page 29

    ... BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK Rev.3.2 _00 vs. V DIOV1 DS 0.29 0.28 0.27 0.26 0.25 0.24 0.23 0.22 0. vs. V DIOV2 DS 0.58 0.56 0.54 0.52 0.50 0.48 0.46 0.44 0. vs. V SHORT DS 1.3 1.2 1.1 1.0 0.9 0 [V] DS Seiko Instruments Inc. ...

  • Page 30

    ... BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK S-8204B Series 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 vs. Ta INC 12.0 11.0 10.0 9.0 8.0 7 ...

  • Page 31

    ... BATTERY PROTECTION IC FOR 3-SERIES OR 4-SERIES CELL PACK Rev.3.2 _00 4. COP / DOP Pin vs. V COH COP 3 vs. V DOH DOP 3 COL 0.10 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0. [V] COP DOL 7 10 [V] DOP Seiko Instruments Inc. S-8204B Series vs. V COP ...

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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. ...