MAX17040

1-Cell/2-Cell Fuel Gauge with ModelGauge

Smarten Up Your Dumb Battery!


Please check latest availability status for a specific part variant.

Description

The MAX17040/MAX17041 are ultra-compact, low-cost, host-side fuel-gauge systems for lithium-ion (Li+) batteries in handheld and portable equipment. The MAX17040 is configured to operate with a single lithium cell and the MAX17041 is configured for a dual-cell 2S pack.

The MAX17040/MAX17041 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 MAX17040/MAX17041 are available in either a 0.4mm pitch 9-bump UCSP™ or 2mm x 3mm, 8-pin TDFN lead-free package.
MAX17040, MAX17041: Simple Fuel Gauge Circuit Diagram MAX17040, MAX17041: Simple Fuel Gauge Circuit Diagram Enlarge+

Key Features

  • Host-Side or Battery-Side Fuel Gauging
    • 1 Cell (MAX17040)
    • 2 Cell (MAX17041)
  • Precision Voltage Measurement
    • ±12.5mV Accuracy to 5.00V (MAX17040)
    • ±30mV Accuracy to 10.00V (MAX17041)
  • Accurate Relative Capacity (RSOC) Calculated from ModelGauge Algorithm
  • No Offset Accumulation on Measurement
  • No Full-to-Empty Battery Relearning Necessary
  • No Sense Resistor Required
  • 2-Wire Interface
  • Low Power Consumption
  • Tiny, Lead(Pb)-Free, 8-pin, 2mm x 3mm TDFN Package or Tiny 0.4mm Pitch 9-Bump UCSP Package

Applications/Uses

  • Digital Still, Video, and Action Cameras
  • Handheld Computers and Terminals
  • Health and Fitness Monitors
  • Medical Devices
  • Smartphones, Tablets
  • Wireless Speakers
Part NumberFunctionsBattery TypeInterfaceParameters MeasuredFuel Gauge AlgorithmApplicationsVSUPPLY
(V)
VSUPPLY
(V)
Package/PinsOper. Temp.
(°C)
minmax
MAX17040 Fuel Gauge1 Cell Li-Ion2-Wire
State of Charge
Voltage
ModelGaugeHost2.54.5
TDFN/8
WLP/9
-40 to +85
MAX17041 2 Cell Li-Ion
TDFN/8
WLP/9
See All Battery Monitors, Protectors, and Selectors (51)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Technical Documents

Tutorial 5133 Power-Supply Solutions for Altera FPGAs
Tutorial 5132 Power-Supply Solutions for Xilinx FPGAs
App Note 5037 Characterizing a Battery for Use with a Fuel Gauge

Quality and Environmental Data

Product Reliability Reports: MAX17040.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • MAX17040G+T
  • MAX17040G+U
  • MAX17040K
  • MAX17040X+T10
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >

     
    Status:
    Package:
    Temperature:

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