Renesas unveils compact lithium-ion battery charging control IC
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Renesas Electronics has introduced a charging control IC designed to achieve further miniaturisation and safe charging control for single cell lithium-ion batteries used in portable devices.
According to the semiconductor specialist, the R2A20055NS IC has a number of protection features for portable equipment including battery overvoltage protection and charging timers. The device also includes functions that implement the charging profiles stipulated by the Japan Electronics and Information Technology Industries Association (JEITA), allowing it to implement safe charging control.
The IC is designed to provide control pins for each block to limit the input current. Current limit options are 100mA, 500mA, or no limit. This enables the device to perform battery charging according to the USB power available.
As well as input pins with withstand voltage of 25V, Renesas has added new overvoltage protection functions to the input pins. These are designed to protect application systems from the overshoot that occurs when a power adapter or USB cable is connected.
The R2A20055NS comes in a 2×2.5mm ultra miniature, high thermal dissipation 10pin HUSON package.
Samples of the device will be available in December 2011, with mass production scheduled to begin in March 2012.
