The STC3105 battery monitor IC provides a gas gauge for handheld applications. The IC uses open-circuit voltage and coulomb-counter methods to estimate the battery capacity and to supervise and track charge/discharge status. It helps increase battery runtime and lifespan in mobile phones, multimedia players, digital cameras, and other space-constrained portable gadgets.
The battery-monitor IC is provided in a 2 x 3 x 0.8–mm package, the smallest-in-class device in the market. The device has 60–µA typical supply-current requirements. It integrates a programmable alarm output to alert the system when the battery state-of-charge is below a defined level without involving the system microcontroller. ( $1.00 ea/1,000 — available now.)
By Paul O’Shea
STMicroelectronics , Lexington , MA
Information 781-861-2650
www.st.com
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