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Tiny, Low-Power, 1% Accurate Battery Monitors Maximize Battery Life in Portable Equipment

Note to Editor: The MAX6775-MAX6781 are the smallest, most accurate battery monitors that maximize the life of portable equipment such as PDAs, audio players, and glucose meters. The 1% accuracy allows the battery to drain down further than is typical before needing replacement. These miniature devices are the first battery monitors offered in a 1mm x 1.5mm microDFN package.

SUNNYVALE, CA-September 14, 2005-Maxim Integrated Products (NASDAQ: MXIM) introduces the MAX6775-MAX6781 battery monitors packaged in an ultra-small, 1mm x 1.5mm microDFN, making them the smallest battery monitors currently offered. They consume only 3 microamps and have 1% accuracy, the best accuracy in the industry. With this 1% accuracy, the MAX6775-MAX6781 monitors allow a battery to drain down further than is typically considered safe. Consequently, portable equipment operates longer from a single charge and battery replacement is delayed. These battery monitors are ideal for single Li+ or multicell NiMH, NiCd, and alkaline cell applications in portable equipment.

Whenever a monitored battery falls below its user-adjustable or fixed threshold, a low-battery output asserts to indicate low-battery conditions. The MAX6775/MAX6776*/MAX6777 offer a single low-battery output, while the MAX6778*-MAX6781 offer dual low-battery outputs capable of monitoring two independent battery voltages. The MAX6775/MAX6777/MAX6779* have push-pull and the MAX6776/MAX6778/MAX6780* have open-drain low-battery output configurations. The MAX6781 has both one push-pull and one open-drain output.

These battery monitors are available with fixed hysteresis options of 0.5%, 5%, or 10% (MAX6775/MAX6776 and MAX6779/MAX6880/MAX6881), or user-adjustable hysteresis (MAX6777/MAX6778) to prevent the output from chattering due to the removal of the load.

The MAX6775-MAX6781 are available in SC70 and microDFN packages, and are fully specified from -40 degrees Celsius to +85 degrees Celsius. Pricing for these devices starts at $0.89 (1000-up, FOB USA).

*Future products-contact factory for availability