Details, datasheet, quote on part number: S-8241ACHMC-GCH-T2
PartS-8241ACHMC-GCH-T2
CategoryPower Management => Battery Management => Battery Protection => Lithium-Ion Rechargeable Battery Protection
TitleLithium-Ion Rechargeable Battery Protection
DescriptionFunction = For 1-cell ;; Overcharge Detection Voltage (Accuracy) = 3.9-4.4 V (±25 MV) ;; Overdischarge Detection Voltage (Accuracy) = 2.0-3.0 V (±80 MV) ;; Overcurrent Detection Voltage 1 (Accuracy) = 0.05-0.3 V (±20 MV) ;; Overcharge Detection Delay Time = 1.0s, 0.125s ;; Package (Power Dissipation) = SOT-23-5 (250 MW) 5-pin SON(A) (150 MA)
CompanySeiko Instruments
DatasheetDownload S-8241ACHMC-GCH-T2 datasheet
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Features, Applications

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 single-cell lithium ion/lithium polymer battery packs from overcharge, overdischarge and overcurrent.

Features

(1) Internal high-accuracy voltage detection circuit Overcharge detection voltage: V (5 mV-step) Accuracy 25 mV(+25C) and +55C) *1 Overcharge release voltage 4.4 V Accuracy 50 mV

*1. Overcharge release voltage = Overcharge detection voltage - Overcharge hysteresis The overcharge hysteresis can be selected in the range in 50mV steps. (However, selection "Overcharge release V" is enabled.)

Overdischarge detection voltage: Overdischarge release voltage:

Overcurrent 1 detection voltage: V (5 mV-step) Accuracy of 20 mV Overcurrent 2 detection voltage: 5 V (fixed) Accuracy (2) A high voltage withstand device is used for charger connection pins (VM and CO pins: Absolute maximum rating V) (3) Delay times (overcharge: tCU; overdischarge: tDL; overcurrent 1: tlOV1; overcurrent 2: tlOV2) are generated by an internal circuit. (External capacitors are unnecessary.) Accuracy % (4) Internal three-step overcurrent detection circuit (overcurrent 1, overcurrent 2, and load short-circuiting) (5) Either the 0 V battery charging function 0 V battery charge inhibiting function can be selected. (6) Products with and without a power-down function can be selected. (7) Charger detection function and abnormal charge current detection function The overdischarge hysterisis 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) (8) Low current consumption Operation: 3.0 A typ. 5.0 A max. Power-down mode: 0.1 A max. (9) Wide operating temperature range: C (10) Small package SOT-23-5, 5-Pin SON(A)

*2. Overdischarge release voltage = Overdischarge detection voltage + Overdischarge hysteresis The overdischarge hysteresis can be selected in the range in 100mV steps. (However, selection "Overdischarge release V" is enabled.)

Applications
Lithium-ion rechargeable battery packs Lithium- polymer rechargeable battery packs
SOT-23-5 (PKG drawing code MP005-A) 5-Pin SON(A) (PKG drawing code : PN005-A)
BATTERY PROTECTION IC FOR A SINGLE CELL PACK S-8241 Series Block Diagram
Level conversion circuit 0V battery charging circuit 0V battery charge inhibition circuit

The overdischarge hysterisis is released when a charger is detected. Charger detection circuit Overcurrent 1 detection comparator

Remark The diodes in the IC are parasitic diodes Figure 1 Block Diagram

1. Product name Product name: S-8241AB S-8241AC Symbol -product code (GB)-taping orientation (T2 or TF) -product code (GC)-taping orientation (T2 or TF) Meaning Serial number Package form Description Is set from Z in sequence. MC:SOT-23-5, PN:5-pin SON(A)

BATTERY PROTECTION IC FOR A SINGLE CELL PACK S-8241 Series

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