MAX17040

EVALUATION KIT AVAILABLE AVAILABLE MAX17040/MAX17041 Compact, Low-Cost 1S/2S Fuel Gauges General Description The MAX17040/MAX17041 are ultra-compact, low-cost, host-side fuel-gauge systems for lithium-ion (Li+) batteries in handheld and portable equipment. The MAX17040 is configured to operate with a single lithium cell and the MAX17041 is configured for a dual-cell 2S pack. The MAX17040/MAX17041 use a sophisticated Li+ battery-modeling scheme, called ModelGauge™ to track the battery’s relative state-of-charge (SOC) continuously over a widely varying charge/discharge profile. Unlike traditional fuel gauges, the ModelGauge algorithm eliminates the need for battery relearn cycles and an external current-sense resistor. Temperature compensation is possible in the application with minimal interaction between a µC and the device. A quick-start mode provides a good initial estimate of the battery’s SOC. This feature allows the IC to be located on system side, reducing cost and su...