The MAX17043/MAX17044 are ultra-compact, low-cost, host-side fuel-gauge systems for lithium-ion (Li+) batteries in handheld and portable equipment. The MAX17043G+T is configured to operate with a single lithium cell and the MAX17044 is configured for a dual-cell 2S pack. The MAX17043/MAX17044 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. The IC can be located on the system side, reducing cost and supply chain constraints on the battery. Measurement and estimated capacity data sets are accessed through an I2C interface. The MAX17043/MAX17044 are available in either a 0.4mm pitch 9-bump UCSP or 2mm x 3mm, 8-pin TDFN lead-free package.
Feature
Host-Side or Battery-Side Fuel Gauging
1 Cell (MAX17043)
2 Cell (MAX17044)
Precision Voltage Measurement
Accurate Relative Capacity (RSOC) Calculated from ModelGauge Algorithm
No Offset Accumulation on Measurement
No Full-to-Empty Battery Relearning Necessary
No Sense Resistor Required
External Alarm/Interrupt for Low-Battery Warning
2-Wire Interface
Low Power Consumption
Tiny, Lead-Free, 8-Pin, 2mm x 3mm TDFN Package or Tiny 0.4mm Pitch 9-Bump UCSP Package
Applications
Digital Still, Video, and Action Cameras
Handheld Computers and Terminals
Health and Fitness Monitors
Smartphones, Tablets
Wireless Speakers
Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 
