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 Lithium-Ion Battery ICs
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2 to 4cells Lithium-ion/Lithium-polymer battery secondary protection IC
MM3508A Series
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[Outline]
MM3508A series is a double protection IC for 2 to 4 serial cells lithium-ion / lithium-polymer rechargable battery for secondary protection IC. It detects battery voltage for each cell.
The FUSE cutting signal is the output between period of time. And the CELL voltage is released by electric discharge after FUSE was cut.

[Features] (Unless otherwise specified, Topr=+25℃)

1. Range and accuracy of overcharge detection/hysteresis voltage

●Overcharge detection voltage 4.0V to 4.5V, 5mV step Accuracy±20mV
(Topr=0 to +50℃)
●Overcharge hysteresis voltage -500mV to -50mV, 50mV step Accuracy±20%

2. Range of detection delay time

●Overcharge detection delay time 1ms to (1ms×2n1)+(1ms×2n2)
*n1 and n2 can select two arbitrary
integers between 0 to 13. (However n1≠n2)

3. Low current consumption

Typ. 3.5µA, Max. 5.0µA (Vcell=4.0V)
Typ. 0.15µA, Max. 0.30µA (Vcell=2.3V)

4. Absolute maximum ratings

●VDD pin VSS-0.3 to VSS+28V
●OV pin VSS-0.3V to VDD+0.3V
●Storage temperature -55℃ to +125℃
●Operation temperature -40℃ to +110℃

5. The FUSE cutting signal is the output between period of time. And the CELL voltage is released by electric discharge resistance of "60KΩ" after FUSE was cut.
And CELL stops an electric discharge if the CELL voltage becomes less than the electric discharge release voltage.



[Package]


[Pin Assignment]

SOT-26A

SSON-6A

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[NOTE]
-Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
-The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
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