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Li-ion IC supports USB charging

Posted: 08 Dec 2011 ?? ?Print Version ?Bookmark and Share

Keywords:battery charging? Li-ion? charging control IC?

Renesas Electronics Corp. has introduced the R2A20055NS, a charging control IC that achieves further miniaturization and safe charging control for single-cell lithium-ion batteries used in portable devices.

The R2A20055NS device targets the full range of portable equipment. In addition to the full complement of protection features necessary for portable equipment, including battery overvoltage protection and charging timers, the new IC includes functions that implement the charging profiles stipulated by JEITA, which allow the R2A20055NS IC to implement safe charging control.

The R2A20055NS IC provides control pins for each block to limit the input current. Current limit options are 100mA, 500mA or no limit. Thus, it can perform battery charging according to the USB power available, Renesas said.

Not only do the R2A20055NS input pins have high withstand voltage of 25V, but Renesas has added new overvoltage protection functions 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.

The R2A20055NS IC implements the functions in a 2 2.5mm ultra-miniature, high thermal dissipation, 10-pin HUSON package, and thus can contribute to further miniaturization in portable equipment.

Samples of the R2A20055NS IC are available now. The IC is priced at $1.30 per unit. Mass production is scheduled to begin in March next year.

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