EVALUATION KIT AVAILABLE MAX17058/MAX17059 1-Cell/2-Cell Fuel Gauge with ModelGauge General Description Features and Benefits The MAX17058/MAX17059 ICs are tiny fuel gauges for MAX17058: 1 Cell, MAX17059: 2 Cells lithium-ion (Li+) batteries in handheld and portable equip- Precision 7.5mV/Cell Voltage Measurement ment. The MAX17058 operates with a single Li+ cell and ModelGauge Algorithm the MAX17059 with two Li+ cells in series. Provides Accurate State-of-Charge The ICs use the sophisticated Li+ battery-modeling Compensates for Temperature/Load Variation algorithm ModelGauge to track the battery relative Does Not Accumulate Errors, Unlike Coulomb state-of-charge (SOC) continuously over a widely varying Counters charge/discharge conditions. The ModelGauge algorithm Eliminates Learning eliminates current-sense resistor and battery-learn cycles Eliminates Current-Sense Resistor required by other fuel gauges. Temperature compensa- Low Quiescent Current: 23A tion is implemented using the system micro-controller. Battery-Insertion Debounce On battery insertion, the ICs debounce initial voltage measurements to improve the initial SOC estimate, Best of 16 Samples Estimates Initial SOC allowing them to be located on system side. SOC and Programmable Reset for Battery Swap 2 C interface. voltage information is accessed using the I 2.28V to 3.48V Range The ICs are available in a tiny 0.9mm x 1.7mm, 8-bump Low SOC Alert Indicator wafer-level package (WLP) or a 2mm x 2mm, 8-pin TDFN 2 I C Interface package. Ordering Information appears at end of data sheet. Applications Smartphones, Tablets Health and Fitness Monitors Simple Fuel-Gauge Circuit Diagram Digital Still, Video, and Action Cameras Medical Devices Handheld Computers and Terminals MAX17058 Wireless Speakers V ALRT DD SYSTEM CELL SDA P ONLY ONE CTG SCL EXTERNAL COMPONENT QSTRT GND ModelGauge is a trademark of Maxim Integrated Products, Inc. 19-6172 Rev 7 11/16MAX17058/MAX17059 1-Cell/2-Cell Fuel Gauge with ModelGauge Absolute Maximum Ratings CELL to GND ........................................................-0.3V to +12V Storage Temperature Range ............................ -55C to +125C All Pins (excluding CELL) to GND ..........................-0.3V to +6V Lead Temperature (TDFN only) (soldering, 10s) ............+300C Continuous Sink Current, SDA, ALRT ...............................20mA Soldering Temperature (reflow) .......................................+260C Operating Temperature Range .......................... -40C to +85C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Electrical Characteristics (2.5V < V < 4.5V, -20C < T < +70C, unless otherwise noted. Typical values are at T = +25C.) (Note 1) DD A A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS (Note 2) 2.5 4.5 V Supply Voltage V DD Configuration range, in 40mV steps 2.28 3.48 V Fuel-Gauge SOC Reset V RST (VRESET Register) Trimmed at 3V 2.85 3.0 3.15 V SCL, SDA, Data I/O Pins (Note 2) -0.3 +5.5 V ALRT I Sleep mode, T < +50C 0.5 2 DD0 A Supply Current A I Active mode 23 40 DD1 Time Base Accuracy t Active mode (Note 3) -3.5 1 +3.5 % ERR ADC Sample Period Active mode 250 ms V = 3.6V, T = +25C (Note 4) -7.5 +7.5 CELL A Voltage Error V mV/cell ERR -20C < T < +70C -20 +20 A Voltage-Measurement Resolution 1.25 mV/cell MAX17058: V pin 2.5 5 DD Voltage-Measurement Range V MAX17059: CELL pin 5 10 SDA, SCL, QSTRT Input Logic-High V 1.4 V IH SDA, SCL, QSTRT Input Logic-Low V 0.5 V IL SDA, ALRT Output Logic-Low V I = 4mA 0.4 V OL OL SDA, SCL Bus Low-Detection I V = V = 0.4V (Note 5) 0.2 0.4 A PD SDA SCL Current Bus Low-Detection Timeout t (Note 6) 1.75 2.5 s SLEEP 2 Electrical Characteristics (I C Interface) (2.5V < V < 4.5V, -20C < T < +70C, unless otherwise noted.) (Note 1) DD A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS SCL Clock Frequency f (Note 7) 0 400 kHz SCL Bus Free Time Between a STOP and t 1.3 s BUF START Condition START Condition (Repeated) Hold t (Note 8) 0.6 s HD:STA Time Low Period of SCL Clock t 1.3 s LOW Maxim Integrated 2 www.maximintegrated.com