EVALUATION KIT AVAILABLE Click here for production status of specific part numbers. MAX17263 Single/Multi-Cell Fuel Gauge with ModelGauge m5 EZ and Integrated LED Control General Description Benefits and Features The MAX17263 is an ultra-low power fuel-gauge IC which ModelGauge m5 EZ implements the Maxim ModelGauge m5 algorithm. The No Characterization Required for EZ Performance IC monitors either a single cell battery pack or multiple-se- Robust Against Battery Variation ries cell battery pack with an external resistor divider. The Eliminates Error Near Empty Voltage IC drives 3 to 12 automatically-counted LEDs to indicate Eliminates Coulomb Counter Drift battery state-of-charge on a push-button press, or any oth- Compensates for Age, Current, and Temperature 2 er system status using I C commands. Does Not Require Empty, Full, or Idle States The ModelGauge m5 EZ algorithm makes fuel gauge im- Monitors Single-Cell or Multiple-Cell Battery Packs plementation easy by eliminating battery characterization Integrated LED Control with Push-Button Input requirements and simplifying host software interac- Drives 3 to 12 LEDs, Automatically Counted tion. The algorithm provides tolerance against battery di- 2 Custom Pattern LED Control Using I C Commands versity for most lithium batteries and applications. Accurate Current Sensing The algorithm combines the short-term accuracy and lin- High-Side or Low-Side Sensing Options earity of a coulomb counter with the long-term stability of Wide Sense Resistor Range: 1m to 1000m a voltage-based fuel gauge, along with temperature com- PCB Metal Sensing + Temperature Compensation pensation to provide industry-leading fuel-gauge accura- Supports Li+ and Variants Including LiFePO 4 cy. The IC automatically compensates for cell-aging, tem- Thermistor or 1C Internal Temperature perature, and discharge rate, and provides accurate state- Dynamic Power Estimates Power Capability During of-charge (SOC) in percentage (%) and remaining capac- Discharge ity in milliampere-hours (mAh) over a wide range of oper- Time-to-Empty and Time-to-Full Estimation ating conditions. As the battery approaches the critical re- Predicts Remaining Capacity Under Theoretical Load gion near empty, the algorithm invokes a special correc- No Calibration Required tion mechanism that eliminates any error. The IC provides Alert Indicator for Voltage, SOC, Temperature, accurate estimation of time-to-empty and time-to-full and Current and 1% SOC Change provides three methods for reporting the age of the bat- Ordering Information appears at end of data sheet. tery: reduction in capacity, increase in battery resistance, and cycle odometer. The IC provides precision measurements of current, volt- Simple Fuel-Gauge Circuit Diagram age, and temperature. The temperature of the battery pack is measured using an internal temperature sensor or HIGH-SIDE (1S ONLY) 2 external thermistor. A 2-wire I C interface provides access SYSPWRSYSPWR R SENSE to data and control registers. The IC is available in a 3mm 0.1F 3~5V CSN CSPH BATT REG x 3mm 14-pin TDFN package. REG 0.47F (2S+) ALRT Applications CELLX SDA SCL Wireless Speakers MAX17263MAX17263 Medical Devices L1 PROTECTION 3~12 LED L2 Drones CIRCUIT L3 NETWORK L4 Power Tools TH CSPL E-Bikes GND EP CSN 10k Headlamps and Torches NTC Battery Backup R SENSE SYSGNDSYSGND Toys Home and Building Automation, Sensors ModelGauge is a trademark of Maxim Integrated Products, Inc. 19-100272 Rev 0 6/18MAX17263 Single/Multi-Cell Fuel Gauge with ModelGauge m5 EZ and Integrated LED Control TABLE OF CONTENTS General Description 1 Applications 1 Benefits and Features 1 Simple Fuel-Gauge Circuit Diagram . 1 Absolute Maximum Ratings 6 Package Information . 6 TDFN 6 Electrical Characteristics . 6 Typical Operating Characteristics 10 Pin Configuration(s) . 12 TDFN . 12 Pin Descriptions . 12 Functional Diagram . 13 Detailed Description 14 ModelGauge m5 EZ Performance . 14 Application Notes 15 Standard Register Formats . 15 ModelGauge m5 EZ Configuration Registers . 16 DesignCap Register (18h) . 16 VEmpty Register (3Ah) 16 ModelCfg Register (DBh) 17 IChgTerm Register (1Eh) 17 Config Register (1Dh) and Config2 Register (BBh) 17 ModelGauge m5 Algorithm . 19 ModelGauge m5 Algorithm Output Registers . 20 RepCap Register (05h) . 20 RepSOC Register (06h) . 21 FullCapRep Register (10h) . 21 TTE Register (11h) . 21 TTF Register (20h) . 21 Cycles Register (17h) . 21 Status Register (00h) . 21 Analog Measurements 22 Voltage Measurement 22 VCell Register (09h) 22 AvgVCell Register (19h) 22 MaxMinVolt Register (1Bh) 22 www.maximintegrated.com Maxim Integrated 2