Li-ion battery monitoring LSI delivers a current consumption of 25μA

The ML5233 also features an industry-low 0.1μA current consumption during power down, minimising the effects on battery capacity, even during long-term storage, and contributing to more eco-friendly products with virtually no loss of charged battery power.

In addition, built-in temperature and short-circuit current detection circuits enable detection of not only over-charge/discharge and overcurrent, but also abnormal temperatures during discharge along with battery pack short-circuits, all without an MCU. This decreases footprint by 20% and reduces the number of external components from four to one, leading to smaller battery protection systems and lighter development load.

The demand for battery-driven cordless vacuum cleaners and electric tools utilising secondary Li-ion batteries is increasing worldwide every year due to their greater convenience and ease-of-use. Reducing weight to improve portability and other design factors are also considered important.

Secondary Li-ion batteries feature greater energy efficiency per volume and weight compared to nickel-cadmium and nickel-metal hydride batteries, making it possible to reduce both size and weight. However, one drawback is that they must be continuously monitored and controlled to prevent fire, explosion, and/or reduced battery life, increasing the demand for compact, low consumption battery monitoring LSIs.

Going forward, LAPIS Semiconductor will continue to meet the needs in the consumer and industrial equipment markets for higher voltage battery monitoring systems by offering low-power multi-cell Li-ion battery monitoring LSIs.