POWER SOURCE SELECTOR MINIMIZES SYSTEM COST AND COMPLEXITY
SUNNYVALE, CA-November 28, 2000-Maxim Integrated Products introduces the MAX1773, a highly integrated IC that serves as the control logic for a system with multiple power sources. The device directly drives external P-channel MOSFETs to select from an AC adapter and dual battery sources for charge and discharge. The selection is based on the presence of the power sources and the state of the batteries.
The MAX1773 is designed for use with a buck-topology charger. It provides a simple and easily controlled solution to a difficult analog power control problem. The MAX1773 provides most of the power source monitoring and selection, freeing the power management microprocessor for other tasks. This not only simplifies development of the power management firmware for the microprocessor, but also allows the microprocessor to enter standby, thereby reducing system power consumption.
The MAX1773 is available in a space-saving 20-pin TSSOP package. It is specified for the extended-industrial temperature range (-40°C to +85°C). Prices start at $2.82 (1000-up, FOB USA).
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