Power Electronics

Compact Lithium-Ion Battery-Charging Control IC Supports USB Charging

Renesas Electronics Corporation announced a charging control integrated circuit (IC), the R2A20055NS, that achieves further miniaturization and safe charging control for single-cell lithium-ion batteries used in portable devices.

Used in a wide range of portable equipment, from cell phones to digital still cameras, media players, personal navigation devices, and tablet PCs, lithium-ion batteries have a high energy density and can contribute to equipment miniaturization. At the same time however, they can generate excessive heat and catch fire if they are overcharged. For this reason, JEITA (Japan Electronics and Information Technology Industries Association) has formulated guidelines stipulating that charging rates be reduced when the battery temperature is in low- or high-temperature ranges. In addition, there is an increasing need for charging portable equipment using USB bus power when connected to a personal computer by a USB cable, and for charging within the range of power that can be supplied by a USB bus.

Features

  • Conforms to the changing profiles stipulated by JEITA
  • Support for USB charging
  • Increased input pin withstand voltage
  • High thermal dissipation, ultra-miniature package

Samples of the R2A20055NS IC will be available in December 2011, priced at US$1.30 per unit. Mass production is scheduled to begin in March 2012 and is expected to reach a combined volume of 300,000 units per month in April 2013. (Pricing and availability are subject to change without notice.)

Renesas Electronics America Inc.
Part Number: R2A20055NS

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