Maxim Integrated MAX17048G T10

Description
The MAX17048/MAX17049 ICs are micropower current fuel gauges for lithium-ion (Li ) batteries in handheld and portable equipment. The MAX17048 operates with a single lithium cell, while the MAX17049 operates with two lithium cells in series.
The ICs use the ModelGauge algorithm to track the battery's relative state-of-charge (SOC) continuously over varying charge and discharge conditions. The ModelGauge algorithm eliminates the need for current-sense resistors and battery-learn cycles. Temperature compensation is implemented using the system microcontroller.
The ICs automatically enter low-power 3μA hibernate mode when the battery enters a low-current state, while still providing accurate fuel gauging. The ICs automatically exit hibernate mode when the system returns to active state.
On battery insertion, the ICs debounce initial voltage measurements to improve the initial SOC estimate, allowing them to be located on the system side. SOC, voltage, and rate information is accessed using the I2C interface.

Features
MAX17048: 1 Cell, MAX17049: 2 Cells
Precision ±7.5mV/Cell Voltage Measurement
ModelGauge Algorithm Provides Accurate State-of-Charge
Compensates for Temperature/Load Variation
Does Not Accumulate Errors, Unlike Coulomb Counters
Eliminates Learning
Eliminates Current-Sense Resistor
Ultra-Low Quiescent Current: 3μA Hibernate, 23μA Active
Fuel Gauges in Hibernate Mode Automatically Enter and Exit Hibernate Mode
Reports Charge and Discharge Rate
Battery-Insertion Debounce
Best of 16 Samples to Estimate Initial SOC
Programmable Reset for Battery Swap
2.28V to 3.48V Range
Configurable Alert Indicator
Low SOC (1% Change in SOC)
Battery Undervoltage/Overvoltage
VRESET Alert
I2C Interface
8-Bit OTP ID Register (Contact Factory)

Applications
Smartphones, Tablets
Smartwatches, Wearables
Bluetooth Headsets
Health and Fitness Monitors
Digital Still, Video, and Action Cameras
Medical Devices
Handheld Computers and Terminals
Wireless Speakers
Home and Building Automation, Sensors