资 源 简 介
The MAX1660 digitally controlled fuel-gauge interface executes two essenTIal funcTIons for rechargeable battery-pack management: fuel gauging and pack overcurrentprotecTIon. It accurately monitors a battery pack’scharge and discharge current flow, and records eachusing two independent, on-board Coulomb counters.Each counter’s contents are externally accessible via aSystem Management Bus (SMBus™)-compaTIble 2-wireserial interface. An optional third wire interrupts themicrocontroller (μC) when the charge or dischargecounters reach a preset value, or when an overcurrentcondition (charge or discharge) occurs. In the event ofan overcurrent or short-circuit condition, the MAX1660disconnects the load and alerts its host. The MAX1660’sflexibility allows accurate fuel gauging for any batterychemistry, using any desired control algorithm.The MAX1660 operates with battery voltages from +4Vto +28V and provides two micropower shutdownmodes, increasing battery lifetime. To minimize totalparts count, the device integrates a precision 2.00Vsystem-reference output, a 3.3V linear-regulator outputthat can supply up to 5mA to power external circuitry,and a power-on reset output for the system μC. TheMAX1660 is available in a 16-pin QSOP package.________________________ApplicationsSmart-Battery Packs Battery-Pack Fuel GaugingBattery-Pack Overcurrent Digital Current-SenseProtection InstrumentationIndustrial-Control System Analog-to-DigitalInterfaces Conversion
