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TI expands battery fuel gauge family

Dallas, Tex.—Texas Instruments Inc. has introduced two battery fuel gauge devices with integrated low-dropout regulators (LDOs) for smart phones, mobile internet devices and media players with embedded or removable batteries.

The system-side and battery pack-side fuel gauges build on TI's chip family that predicts battery life with 99-percent accuracy to extend run-time and protect data.

The bq27510 system-side battery fuel gauge with Impedance Track technology incorporates a LDO and can be powered directly from the battery cell with less external circuitry, regardless of system voltage. In addition to simplifying design of the fuel gauge into the host system, it accurately measures remaining capacity data from a device's single-cell Li-Ion battery to predict remaining battery capacity under all conditions, even as a battery ages.

In addition to the system-side battery fuel gauges, TI's bq27540 device resides directly on the embedded or removable battery pack to intelligently manage available power that resides in the battery. The bq27540 will support SDQ, HDQ and I²C communication protocols to allow the system to read important information from the battery.

The bq27510 and bq27540 are available in a space-saving 12-pin, 2.5 mm x 4 mm SON package.

Pricing: $1.35 each in 1,000-piece quantities.

Availability: Sampling with volume production expected in the second quarter of 2008.
Datasheet: bq27510.

Texas Instruments, www.ti.com

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