EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX17260 5.1ОјA 1-Cell Fuel Gauge with ModelGauge m5 EZ
and Optional High-Side Current Sensing General Description Benefits and Features The MAX17260 is an ultra-low power fuel gauge IC which
implements the Maxim ModelGaugeв„ў m5 algorithm. The
IC monitors a single-cell battery pack and supports both
high-side and low-side current sensing. в—Џ ModelGauge m5 EZ No Characterization Required for EZ Performance Robust Against Battery Variation Eliminates Error Near Empty Voltage Eliminates Coulomb-Counter Drift Compensates for Age, Current, and Temperature Does Not Require Empty, Full, or Idle States The ModelGauge m5 EZ algorithm makes fuel gauge implementation easy by eliminating battery characterization
requirements and simplifying host software interaction.
The algorithm provides tolerance against battery diversity
for most lithium batteries and applications. The algorithm
combines the short-term accuracy and linearity of a
coulomb counter with the long-term stability of a voltagebased fuel gauge, along with temperature compensation
to provide industry-leading fuel gauge accuracy. The
IC automatically compensates for cell-aging, temperature,
discharge rate, and provides accurate state-of-charge
(SOC) in percentage (%) and remaining capacity in milliampere-hours (mAh) over a wide range of operating conditions. As the battery approaches the critical region near
empty, the algorithm invokes a special correction mechanism that eliminates any error. The IC provides accurate
estimation of time-to-empty and time-to-full and provides
three methods for reporting the age of the battery: reduction in capacity, increase in battery resistance, and cycle
odometer.
The IC provides precision measurements of current, voltage, and temperature. The temperature of the battery
pack is measured using an internal temperature sensor or
external thermistor. A 2-wire I2C interface provides access
to data and control registers. The IC is available in tiny
lead-free 0.4mm pitch, 1.5mm x 1.5mm, 9-pin WLP package and 3mm x 3mm, 14-pin TDFN package. в—Џ Low 5.1ОјA Operating Current …
