New Industry Products

Dallas Semi Intros DS2770 Battery Monitor/Controller

June 27, 2002 by Jeff Shepard

Dallas Semiconductor Corp. (Dallas, TX) introduced its new DS2770 battery monitor and multi-chemistry charge controller, which integrates a fuel gauge and an optional sense resistor into a 16-pin TSSOP casing, making the IC suitable for use in hand-held wireless products such as PDAs, mobile phones and digital cameras.

Coupled with a single-cell, lithium-polymer pulse charger or a dT/dt termination, three-cell NiMH charger, the chip measures several battery parameters, including current, accumulated current, voltage and temperature. Using a 25-milliohm sense resistor, the DS2770 can measure continuous currents as low as 62.5µA to as high as ±2A. External filtering allows higher peak currents than ±2A to be integrated in the current-accumulation (fuel-gauging) measurement.

Pricing for the DS2770 starts at $3.33 for 1,000-piece quantities.