Ricoh has launched single cell Li-Ion battery protection ICs in a Wafer Level Chip Scaled Package (WLCSP).

They are especially designed for use in rechargeable smart watches, hearing aid instruments, fitness trackers, wireless earbuds and other small portable devices.

Wearable devices incorporate a small rechargeable Li-Ion battery with a capacity in the range from 50 to 100 mAh and have new challenging requirements for its internal components, like an ultra-small package size, low current consumption in On and Standby mode but also sophisticated safety circuits.