The SMB346 and SMB347 battery charger ICs deliver up to 2.5-A charge/system current with dual input/dual output CurrentPath technology for operation with a dead or missing battery. They detect the input source type and automatically optimize operation for the fastest and safest battery charging for smartphones and tablets.
The battery charger ICs are based on a 3-MHz, switch-mode dc/dc architecture that allows for 90% efficient conversion. The chips operate with an input range from +3.7 to +6.2–V input and withstand continuous input over-voltage up to +20 V. Both products support USB On-the-Go (OTG) and MHL/HDMI with integrated VBUS power and a current capability up to 750 mA. Programmable and redundant safety features include dual redundant protection for input/output current and voltage, chip and battery thermal protection, hardware and software safety timers, and battery missing detection. (Ea/10,000: SMB346, $1.27; SMB347, $1.36 — available now.)
By Paul O’Shea
Summit Microelectronics , Sunnyvale , CA , United States
Information 408-523-1000
http://www.summitmicro.com
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