Battery Charger Cuts Charging Time For Portables

The MAX8713 is a synchronous, step-down charger that drives N-channel MOSFETs to achieve high dc/dc conversion efficiency for battery-powered equipment such as handset car kits and cable modem batteries. It uses the Intel SMBus to control the charge voltage and current. The charger can charge one to four lithium-ion (Li+) cells in series at charge currents greater than 2A. It provides 0.5% accurate battery-voltage regulation that increases battery capacity and minimizes charging time. The charge current regulation accuracy is 5%. The charge-current sense amplifier has low offset error, allowing the use of small value sense-resistors. The device is housed in a 28-pin QFN package measuring 4 mm x 4 mm and operates over the industrial temperature range from -40°C to +85°C. Prices start at $5.04 each/1,000. For further information and delivery times, contact MAXIM INTEGRATED PRODUCTS, Sunnyvale, CA. (800) 998-8800.