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Charger IC features alkaline-cell detection

Posted: 28 Nov 2008     Print Version  Bookmark and Share

Keywords:charger IC  NiMH  alkaline-cell detection  single-chip 


Maxim Integrated Products has announced a stand-alone, NiMH charger IC with alkaline-cell detection. Maxim claims the DS2710 is the industry's smallest charger IC to incorporate fast-charge control and alkaline-cell detection. In addition, the charger IC saves space and cost while speeding time to market.

Eliminating the need for circuit design or microcontroller programming, this device offers an elegant, single-chip charger solution that protects against system damage due to corrosive cell leakage. The DS2710 thus makes it easy to add in-system NiMH charging to end equipment powered by AA or AAA batteries.

Ideal for charging batteries from a USB port, the DS2710 is well suited for MP3 players, voice recorders, handheld games, toys, or any other application capable of using standard-size alkaline or NiMH batteries.

The DS2710's charge-control output regulates charge current using a switch-mode or linear control scheme, enabling application designers to choose between maximising charge rate and minimising solution cost and size. The device offers comprehensive charge control for fast-charging NiMH cells, including precharge conditioning, negative-delta-V fast-charge termination, and top-off charging. Voltage, temperature, and charge-timer monitoring during all charge phases provides redundant secondary charge-termination methods for additional protection against overcharge. Additionally, a status pin drives an LED to indicate precharge, fast-charge, or fault conditions.

The DS2710 is available in a space-saving, 3mm x 4mm, 10-pin TQFN package. Prices start at Rs.76.06 ($1.52) (1000-up, FOB USA). Samples are available now.

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