Top

1-Cell/2-Cell Fuel Gauge with ModelGauge and Low-Battery Alert

Smarten Up Your Dumb Battery!

Product Details

The MAX17043/MAX17044 are ultra-compact, low-cost, host-side fuel-gauge systems for lithium-ion (Li+) batteries in handheld and portable equipment. The MAX17043 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.

Key Features

  • Host-Side or Battery-Side Fuel Gauging
    • 1 Cell (MAX17043)
    • 2 Cell (MAX17044)
  • Precision Voltage Measurement
    • ±12.5mV Accuracy to 5.00V (MAX17043)
    • ±30mV Accuracy to 10.00V (MAX17044)
  • 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/Uses

  • Digital Still, Video, and Action Cameras
  • Handheld Computers and Terminals
  • Health and Fitness Monitors
  • Smartphones, Tablets
  • Wireless Speakers
Parametric specs for Battery Fuel Gauges, Protectors, and Monitors
Functions Fuel Gauge
Battery Type 1 Cell Li-Ion
Fuel Gauge Algorithm ModelGauge
Interface 2-Wire
Parameters Measured State of Charge
Voltage
Applications Host
VSUPPLY (V) (min) 2.5
VSUPPLY (V) (max) 4.5
Package/Pins TDFN/8
WLP/9
Oper. Temp. (°C) -40 to +85
View More

Simplified Block Diagram

Ultra-compact, low-cost, host-side fuel-gauge systems for lithium-ion (Li+) batteries in handheld and portable equipment| Simplified Operating Circuit Ultra-compact, low-cost, host-side fuel-gauge systems for lithium-ion (Li+) batteries in handheld and portable equipment| Simplified Operating Circuit Zoom icon

Design & Development

Click any title below to view the detail page where available.

/en/design/design-tools/ee-sim.html?

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal.

Parameters

Parametric specs for Battery Fuel Gauges, Protectors, and Monitors
Functions Fuel Gauge
Battery Type 1 Cell Li-Ion
Fuel Gauge Algorithm ModelGauge
Interface 2-Wire
Parameters Measured State of Charge
Voltage
Applications Host
VSUPPLY (V) (min) 2.5
VSUPPLY (V) (max) 4.5
Package/Pins TDFN/8
WLP/9
Oper. Temp. (°C) -40 to +85

Key Features

  • Host-Side or Battery-Side Fuel Gauging
    • 1 Cell (MAX17043)
    • 2 Cell (MAX17044)
  • Precision Voltage Measurement
    • ±12.5mV Accuracy to 5.00V (MAX17043)
    • ±30mV Accuracy to 10.00V (MAX17044)
  • 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/Uses

  • Digital Still, Video, and Action Cameras
  • Handheld Computers and Terminals
  • Health and Fitness Monitors
  • Smartphones, Tablets
  • Wireless Speakers

Description

The MAX17043/MAX17044 are ultra-compact, low-cost, host-side fuel-gauge systems for lithium-ion (Li+) batteries in handheld and portable equipment. The MAX17043 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.

Simplified Block Diagram

Ultra-compact, low-cost, host-side fuel-gauge systems for lithium-ion (Li+) batteries in handheld and portable equipment| Simplified Operating Circuit Ultra-compact, low-cost, host-side fuel-gauge systems for lithium-ion (Li+) batteries in handheld and portable equipment| Simplified Operating Circuit Zoom icon

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal.