Torex Semiconductor Co., Ltd. (Managing Director, Chuo-ku, Tokyo, Japan: Koji Shibayama Daiichi: 6616, hereinafter referred to as "Torex") has developed a battery-specific charging device that supports CV (constant voltage) charging. Regulator IC XC6240 and battery voltage monitoring IC XC6140.

In recent years, various batteries such as semi-solid batteries and all-solid-state batteries are being developed, and among these batteries are CV (constant voltage) charging type batteries. This time, Torex has developed a charging regulator IC and a battery voltage monitoring IC that can perform constant voltage (CV) charging of 2.3V series lithium secondary batteries.

The charging regulator IC can meet the voltage requirements of the charging voltage of the 2.3V lithium secondary battery, and can output the charging voltage not exceeding the upper limit of the secondary battery even if the deviation is taken into account. It is also possible to suppress the sink current (sink current) flowing to the charging IC from the secondary battery when it is not being charged, which greatly contributes to prolonging the battery driving time.

The battery voltage monitoring IC sets the detection voltage and release voltage suitable for the battery characteristics of the 2.3V series lithium secondary battery. The detection voltage can be selected from 1.6V to 2.2V depending on the application and the internal resistance of the battery. The release voltage is fixed at 2.475V, which is the release voltage when the charging regulator starts charging.

In addition to the small, low-profile package (XC6240: USPN-4, USP-6B06 / XC6140: USPQ-4B05), the two products are available in SSOT-24, which can be mounted in small, low-profile and various applications. on the device.