R5642 Series: 1-Cell to 3-Cell Li-ion Battery Second Protection IC Provides High-Accuracy Voltage Detection Function

Nisshinbo Micro Devices Inc. has introduced the new R5642 Series of overcharge protection IC for 1 to 3 serial cells Li-ion / Li-polymer rechargeable battery. This new IC provides the high-accuracy voltage detection function and the shutdown function can reduce the supply current to the minimum when all cell’s voltage becomes less than the shutdown detection voltage. This IC is suitable for applications like smartphones, tablet PC, games, and hearing aid.

Features

• High Voltage Tolerant Process Absolute maximum rating: 26 V

• Low Supply Current Normal mode: Typ. 0.85 µA (VCELLn (1) : 3.9 V, for 3-cell)

• Overcharge Voltage Detector

• COUT Output (CMOS Output, Active-high): Typ. 4.7 V

• Shutdown Function

• 1 to 3 Cells Selectable Battery Protection

Applications

• Smart Phone

• Tablet PC

• Game

• Hearing Aid