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The MCP73833/4 is a highly advanced linear chargemanagement controller for use in space-limited, costsensiTIve applicaTIons. The MCP73833/4 is available ina 10-Lead, 3mm x 3mm DFN package or a 10-Lead,MSOP package. Along with its small physical size, thelow number of external components required makesthe MCP73833/4 ideally suited for portable applicaTIons.For applicaTIons charging from a USB port, theMCP73833/4 can adhere to all the specificationsgoverning the USB power bus.The MCP73833/4 employs a constant current/constantvoltage charge algorithm with selectable preconditioningand charge termination. The constant voltageregulation is fixed with four available options: 4.20V,4.35V, 4.40V, or 4.50V, to accomodate new, emergingbattery charging requirements. The constant currentvalue is set with one external resistor. TheMCP73833/4 limits the charge current based on dietemperature during high power or high ambient conditions.This thermal regulation optimizes the chargecycle time while maintaining device reliability.Several options are available for the preconditioningthreshold, preconditioning current value, chargetermination value, and automatic recharge threshold.The preconditioning value and charge terminationvalue are set as a ratio, or percentage, of theprogrammed constant current value. Preconditioningcan be set to 100%. Refer to Section 1.0 “ElectricalCharacteristics” for available options and the“Product Indentification System” for standardoptions.The MCP73833/4 is fully specified over the ambienttemperature range of -40°C to +85°C.
