S-8241ACFMC-GCFT2G Seiko Instruments, S-8241ACFMC-GCFT2G Datasheet

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S-8241ACFMC-GCFT2G

Manufacturer Part Number
S-8241ACFMC-GCFT2G
Description
IC LI-ION BATT PROTECT SOT23-5
Manufacturer
Seiko Instruments
Datasheet

Specifications of S-8241ACFMC-GCFT2G

Function
Over/Under Voltage Protection
Battery Type
Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SC-74A, SOT-753
Product
Li-Ion Protection
Output Voltage
4.295 V
Operating Supply Voltage
1.5 V to 8 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
S-8241ACFMC-GCFT2G
Manufacturer:
SII Semiconductor Corporation
Quantity:
18 000
Part Number:
S-8241ACFMC-GCFT2G
Manufacturer:
SEIKO
Quantity:
9 000
www.sii-ic.com
© Seiko Instruments Inc., 1999-2010
The S-8241 Series is a series of lithium ion/lithium polymer rechargeable battery protection ICs incorporating high-accuracy
voltage detection circuits and delay circuits.
These ICs are suitable for protection of 1-cell lithium ion/lithium polymer battery packs from overcharge, overdischarge and
overcurrent.
• Lithium-ion rechargeable battery packs
• Lithium- polymer rechargeable battery packs
• SOT-23-5
• SNT-6A
Features
Applications
Packages
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10) Lead-free, Sn 100%, halogen-free
*1. Overcharge release voltage = Overcharge detection voltage - Overcharge hysteresis
*2. Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis
*3. Refer to “ Product Name Structure” for details.
The overcharge hysteresis can be selected in the range 0.0, or 0.1 V to 0.4 V in 50 mV steps. (However, selection
“Overcharge release voltage<3.8 V” is enabled.)
The overdischarge hysteresis can be selected in the range 0.0 V to 0.7 V in 100 mV steps. (However, selection
“Overdischarge release voltage>3.4 V” is enabled.)
• Overcharge detection voltage:
• Overcharge release voltage:
• Overdischarge detection voltage: 2.0 V to 3.0 V (100 mV-step) Accuracy of ±80 mV
• Overdischarge release voltage:
• Overcurrent 1 detection voltage:
• Overcurrent 2 detection voltage:
• The overdischarge hysteresis is released by detecting a negative VM pin voltage (typ. −1.3 V) (Charger detection
• If the output voltage at DO pin is high and the VM pin voltage becomes equal to or lower than the charger detection
• Operation:
• Power-down mode: 0.1 μA max.
Internal high-accuracy voltage detection circuit
A high voltage withstand device is used for charger connection pins
(VM and CO pins: Absolute maximum rating = 26 V)
Delay times (overcharge: t
by an internal circuit. (External capacitors are unnecessary.)
Internal three-step overcurrent detection circuit (overcurrent 1, overcurrent 2, and load short-circuiting)
Either the 0 V battery charging function or 0 V battery charge inhibiting function can be selected.
Products with and without a power-down function can be selected.
Charger detection function and abnormal charge current detection function
Low current consumption
Wide operating temperature range: −40°C to +85°C
function).
voltage (typ. −1.3 V), the output voltage at CO pin goes low (Abnormal charge current detection function).
3.0 μA typ. 5.0 μA max.
CU
; overdischarge: t
*3
3.9 V to 4.4 V (5 mV-step)
3.8 V to 4.4 V
2.0 V to 3.4 V
0.05 V to 0.32 V (5 mV-step) Accuracy of ±20 mV
0.5 V (fixed)
Seiko Instruments Inc.
DL
; overcurrent 1: t
*2
*1
Accuracy of ±25 mV (+25°C) and ± 30 mV (−5 to +55°C)
Accuracy of ±50 mV
Accuracy of ±100 mV
Accuracy of ±100 mV
lOV1
Accuracy of ±30%
; overcurrent 2: t
BATTERY PROTECTION IC
S-8241 Series
FOR 1-CELL PACK
lOV2
) are generated
Rev.9.0
_00
1

Related parts for S-8241ACFMC-GCFT2G

S-8241ACFMC-GCFT2G Summary of contents

Page 1

... The overdischarge hysteresis is released by detecting a negative VM pin voltage (typ. −1.3 V) (Charger detection function). • If the output voltage at DO pin is high and the VM pin voltage becomes equal to or lower than the charger detection voltage (typ. −1.3 V), the output voltage at CO pin goes low (Abnormal charge current detection function). ...

Page 2

... Block Diagram VDD − + Overcharge detection comparator + − The overdischarge hysterisis is released when a charger is detected. VSS Remark The diodes in the IC are parasitic diodes. 2 Delay circuit Clock generation circuit Counter circuit Overdischarge detection comparator Charger detection circuit Figure 1 Seiko Instruments Inc. Load short- ...

Page 3

... Rev.9.0 _00 Product Name Structure 1. Product Name S-8241A xxx xx x *1. Refer to the tape specifications. *2. Refer to the “3. Product Name List”. 2. Package Package name Package SOT-23-5 MP005-A-P-SD SNT-6A PG006-A-P-SD BATTERY PROTECTION IC FOR 1-CELL PACK Environmental code U : Lead-free (Sn 100%), halogen-free G : Lead-free (for details, please contact our sales office) ...

Page 4

... BATTERY PROTECTION IC FOR 1-CELL PACK S-8241 Series 3. Product Name List (1) SOT-23-5 Over- charge detection Product Name / Item voltage [ S-8241ABAMC-GBAT2x 4.275 V S-8241ABBMC-GBBT2x 4.280 V S-8241ABCMC-GBCT2x 4.350 V S-8241ABDMC-GBDT2x 4.275 V S-8241ABEMC-GBET2x 4.295 V S-8241ABFMC-GBFT2x 4.325 V S-8241ABGMC-GBGT2x 4.200 V S-8241ABHMC-GBHT2x 4.325 V S-8241ABIMC-GBIT2x 4.280 V S-8241ABKMC-GBKT2x 4.325 V S-8241ABLMC-GBLT2x 4.320 V S-8241ABOMC-GBOT2x 4 ...

Page 5

... S-8241AEEMC-GEET2x 4.200 V *1. Refer to the Table 3 about the details of the delay time combinations (1) to (6). Remark 1. Please contact our sales office for the products with detection voltage value other than those specified above Please select products of environmental code = U for Sn 100%, halogen-free products. ...

Page 6

... S-8241ADHPG-KDHTFx 4.250 V *1. Refer to the Table 3 about the details of the delay time combinations (1) to (6). Remark 1. Please contact our sales office for the products with detection voltage value other than those specified above Please select products of environmental code = U for Sn 100%, halogen-free products. ...

Page 7

... Remark The delay times can be changed within the range listed Table 4. For details, please contact our sales office. Delay time Overcharge detection delay time Overdischarge detection delay time Overcurrent 1 detection delay time Remark The value surrounded by bold lines is the delay time of the standard products. ...

Page 8

... VSS Negative power input pin 5 VDD Positive power input pin Voltage detection pin between VM and VSS 6 VM (Overcurrent detection pin) *1. The NC pin is electrically open. The NC pin can be connected to VDD or VSS. Seiko Instruments Inc. Rev.9.0 Table 5 Description Table 6 Description _00 ...

Page 9

... Board size: 114.3 mm × 76.2 mm × t1.6 mm (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 10

... VMD and VDD Internal resistance between VM R VMS and VSS 0 V BATTERY CHARGING FUNCTION The 0 V battery function is either "0 V battery charging function" or "0 V battery charge inhibiting function" depending upon the product type battery charge starting charger V 0CHA voltage 0 V battery charge inhibiting ...

Page 11

... V battery charge starting charger V 0CHA voltage 0 V battery charge inhibiting V 0INH battery voltage *1. Since products are not screened at high and low temperatures, the specification for this temperature range is guaranteed by design, not tested in production. BATTERY PROTECTION IC FOR 1-CELL PACK *1 ) Table 9 Condition ⎯ ...

Page 12

... Overcharge detection delay time Overdischarge detection delay time Overcurrent 1 detection delay time Overcurrent 2 detection delay time Load short-circuiting detection delay time *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. 12 Table 10 Symbol Condition ⎯ ...

Page 13

... Overdischarge detection delay time Overcurrent 1 detection delay time Overcurrent 2 detection delay time Load short-circuiting detection delay time *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. (4) S-8241ABR, S-8241ACD Item DELAY TIME (Ta = 25°C) ...

Page 14

... Overdischarge detection delay time Overcurrent 1 detection delay time Overcurrent 2 detection delay time Load short-circuiting detection delay time *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. (6) S-8241AEE Item DELAY TIME (Ta = 25°C) ...

Page 15

... V2 is gradually increased from the normal condition V1 = 3.5 V and The overcurrent 2 detection voltage (V “H” when the voltage V2 is increased at the speed between 1 ms and 4 ms from the normal condition V1 = 3.5 V and The load short-circuiting detection voltage (V “ ...

Page 16

... V2 becomes overcurrent 1 detection voltage ( IOV1 Set V1 = 3.5 V and under normal condition. Increase V2 from 0.7 V momentarily (within 1 μs). The time after V2 becomes overcurrent 1 detection voltage (V Caution The overcurrent 2 detection delay time starts when the overcurrent 1 is detected, since the delay circuit is common. ...

Page 17

... Test Condition 11, Test Circuit 1 (Product with 0 V battery charge inhibiting function battery charge inhibiting battery voltage) Set and Increase V1 gradually. The voltage between VDD and VSS at which V 0 higher) is the 0 V battery charge inhibiting battery voltage (V BATTERY PROTECTION IC FOR 1-CELL PACK ) ...

Page 18

... Overcurrent Status When the discharging current becomes equal to or higher than a specified value (the VM pin voltage is equal to or higher than the overcurrent detection voltage) during discharging under normal status and the state continues for the overcurrent detection delay time or longer, the S-8241 turns the discharging control FET off to stop discharging ...

Page 19

... IC does not return to the normal status until the battery voltage drops below the overcharge detection voltage (V ) even if the load is connected. In addition if the VM pin voltage is equal to or lower than the overcurrent 1 CU detection voltage when a load is connected and discharging starts, the IC does not return to the normal status. ...

Page 20

... VMD The power-down status is released when a charger is connected and the potential difference between VM and VDD becomes 1.3 V (typ.) or higher (load short-circuiting detection voltage). At this time, the FET is still off. When the battery voltage becomes the overdischarge detection voltage (V normal status from the overdischarge status. ...

Page 21

... This action is called abnormal charge current detection. Abnormal charge current detection works when the discharging control FET is on (DO pin voltage is “H”) and the VM pin voltage drops below the charger detection voltage (V overdischarge status, the S-8241 consequently turns the charging control FET off and stops charging after the battery voltage becomes the overdischarge detection voltage or higher (DO pin voltage becomes “ ...

Page 22

... V or lower). 3. When a battery is connected to the IC for the first time, the IC may not enter the normal status in which discharging is possible. In this case, set the VM pin voltage equal to the V the VM and VSS pins or connect a charger) to enter the normal status. ...

Page 23

... IOV1 CHA Charger connected Load connected Overcharge detection delay time (t Status Remark (1) : Normal status, (2) : Overcharge status, (3) : Overdischarge status, (4) : Overcurrent status The charger is assumed to charge with a constant current. BATTERY PROTECTION IC FOR 1-CELL PACK ) Overdischarge detection delay time (t CU (1) (1) (2) Figure 7 ) Overdischarge detection delay time (t ...

Page 24

... Charger connection Load connection Mode Status Note: (1) Normal mode, (2) Overcharge mode, (3) Overdischarge mode, (4) Overcurrent mode Remark (1) : Normal status, (2) : Overcharge status, (3) : Overdischarge status, (4) : Overcurrent status The charger is assumed to charge with constant current. The charger is assumed to charge with constant current Overcurrent 2 detection delay time (t ...

Page 25

... Overdischarge detection delay time (t Status Mode Note: (1) Normal mode, (2) Overcharge mode, (3) Overdischarge mode, (4) Overcurrent mode Remark (1) : Normal status, (2) : Overcharge status, (3) : Overdischarge status, (4) : Overcurrent status The charger is assumed to charge with constant current. The charger is assumed to charge with constant current. BATTERY PROTECTION IC FOR 1-CELL PACK ...

Page 26

... C1 capacity is increased. Set the C1 capacity by evaluating the actual application. * set to less than 300 Ω, a current which is bigger than the power dissipation flows through the IC and the IC may break when a charger is connected reversely resistor bigger than 1.3 kΩ is installed as R2, the charging current may not be cut when a high-voltage charger is connected ...

Page 27

... Precautions • Pay attention to the operating conditions for input/output voltage and load current so that the power loss in the IC does not exceed the power dissipation of the package. • Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic protection circuit. • ...

Page 28

... Overdischarge detection voltage vs. temperature 2.40 2.36 2.32 2.28 2.24 2.20 -50 - Ta(°C) Overcurrent 1 detection voltage vs. temperature 0.110 0.105 0.100 0.095 0.090 -50 - Ta(°C) 2. Current consumption temperature characteristics Current consumption vs. Temperature in normal mode -50 - Ta(°C) 28 Overcharge release voltage vs. temperature 4.23 4.21 4.19 4.17 4.15 4. 100 -50 Overdischarge release voltage vs ...

Page 29

... Rev.9.0 _00 3. Current consumption Power voltage characteristics (Ta = 25°C) Current consumption − power supply volatge dependency ( Detection/release delay time temperature characteristics Overcharge detection delay time vs. temperature 2.0 1.5 1.0 0.5 0.0 -50 - Ta(°C) Overdischarge detection delay time vs. temperature 250 200 150 ...

Page 30

... Ta(°C) 5. Delay time power-voltage characteristics (Ta = 25°C) Overcurrent 1 detection delay time vs. power supply voltage dependency 2.0 2.5 3.0 3 pin/DO pin output current characteristics (Ta = 25°C) CO pin source current characteristics -1.4 -1.2 -1.0 -0.8 -0.6 -0.4 -0.2 0 pin source current characteristics -1.8 -1 ...

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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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