The MM3284 series are secondary protection IC using high voltage CMOS process for overcharge protection of the rechargeable Lithium-ion or Lithium-polymer battery. The high accuracy overcharge detection of each cell of the rechargeable 1~4-cell Lithium-ion or Lithium-polymer battery is possible. With a timer circuit built-in, it is possible to set overcharge detection delay time.

Range and accuracy of overcharge detection/hysteresis voltage

Overcharge detection voltage	4.0V to 4.5V, 5mV step
Overcharge hysteresis voltage	50mV to 1000V, 50mV step

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)

Low current consumption

Typ. 2.5µA, Max. 5.0µA (Vcell=3.5V)
Typ. 2.0µA, Max. 4.0µA (Vcell=2.3V)

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°C
Operation temperature	-40 to +110°C

SOT-26A SSON-6A