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NJR unveils new control IC

Posted: 22 Apr 2005 ?? ?Print Version ?Bookmark and Share

Keywords:njw4120? new japan radio? njr? battery charge control ic? control ic?

The NJW4120 from New Japan Radio Co. Ltd (NJR) is a 1-cell and 2-cell Li-ion battery charge control IC with a built-in ac-dc secondary side control feature.

Using a photocoupler to directly feed back optimum charging voltage and current information to the primary side, this new product increases energy efficiency, makes possible a smaller charger, and conserves energy. Charging current can be freely set and therefore it is possible to optimize charging according to battery capacity, added NJR.

As safety features, the chip has over voltage, over discharge, temperature detection, and a charge over timer. Delay timers and Hysteresis inputs are also included for high noise immunity, and the adaptor and the charge control circuit are mounted on one chip.

The NJW4120 control IC utilizes the Bi-CMOS technology, and is available in DMP20 and SSOP20 packaging options.

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