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Li-ion charge control IC targets portable apps

Posted: 09 Dec 2011     Print Version  Bookmark and Share

Keywords:battery charging  Li-ion  charging control IC 

Renesas Electronics Corp. unveils the R2A20055NS, a charging control IC that claims further miniaturisation and safe charging control targeted at 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 over-voltage 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 over-voltage 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 miniaturisation in portable equipment.

Samples of the R2A20055NS IC are available now. The IC is priced at Rs.58.30 ($1.30) per unit. Mass production is scheduled to begin in March next year.

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