Innovativ chip til Li-Ion batterimonitorering
LAPIS Semiconductor annoncerer 10-celle Li-Ion batterimonitorerings IC, der bl.a. udmærker sig med et strømforbrug på kun 23uA (in english).
LAPIS Semiconductor, a ROHM Group company, has recently announced the development of a 10-cell lithium-ion battery monitoring LSI that provides a current consumption of only 25μA (typ.), the lowest in the industry, making it ideal for battery protection systems in cordless vacuum cleaners, electric tools, and other portable equipment.The ML5233 also features an industry-low 0.1μA (typ.) current consumption during power down, minimizing 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 (high) 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 utilizing secondary lithium-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 lithium-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 lithium-ion battery monitoring LSIs.
