Renesas Electronics has announced a charging control IC, the R2A20055NS that achieves further miniaturisation and safe charging control for single-cell lithium-ion batteries used in portable devices. Lithium-ion batteries are used in many portable equipment, from cell phones to digital still cameras, media players, personal navigation devices and tablet PCs. In addition to a complement of the protection features seen as necessary for portable equipment, including battery over-voltage protection and charging timers, the IC includes functions that implement the charging profiles stipulated by JEITA, allowing the IC to implement safe charging control, claims the company.
The IC provides control pins for each block to limit the input current. Current limit options are 100, 500mA, or no limit. Thus, it can perform battery charging according to the USB power available, says the company. The IC has over-voltage protection functions added to the input pins as well. These can protect application systems from the overshoot that occurs when a power adapter or USB cable is connected, according to the company. The IC is available in a 2×2.5mm, high-thermal dissipation, 10pin Huson package.
