MAX17301/02/03/11/12/13 ModelGauge™ m5 Fuel-Gauge ICs

Comprehensive Lithium Ion Battery Protection, High SOC Accuracy and SHA-256 Authentication with Low I_Q

Description

The MAX17301/02/03/11/12/13 ModelGauge™ m5 fuel-gauge ICs provide comprehensive protection of Li+ batteries while extending battery life of compact electronic products by offering the market’s lowest quiescent current. As with the rest of the ModelGauge m5 family, these ICs also provide the highest battery state-of-charge (SOC) accuracy without requiring battery characterization, and several parts in the family protect against counterfeiting and cloning.

Key Benefits:

• Ensures safe charging and discharging in a wide range of applications
  • Comprehensive protection of Li+ batteries via programmable 2-level Li+ protector control for abnormal voltage, current, and temperature conditions
  • Integrated protection eliminates need for discrete components, shrinking the solution size and simplifying the BOM
  • Helps system makers meet new product safety standards such as IEC 62368-1 / UL62368-1
    
    
• Extends battery life with lowest quiescent current
  • Supports long product shelf-life and run-time with operating quiescent current of:
    • 24 µA active, during normal operation
    • 18 µA low power, when battery measurements are at a slower pace
    • 7 µA with FETs off (Ship), when system power is off as the IC disconnects the battery from the system. Here, the IC continues to monitor the battery. This is likely the preferred mode to conserve battery energy when the system is unused for a long duration, e.g. shipping from factory to the store shelf. But the IC continues to track the self-discharge and other changes in the battery.
    • 0.5 µA (DeepShip), when the system designer can choose to put the IC in an even lower power mode when the system is expected to stay unused for a prolonged duration. The IC isn’t tracking the battery in this mode, except for undervoltage conditions.
    • 0.1 µA (UV shutdown), when the IC detects that the battery is in undervoltage condition. In this case, it not only cuts off the battery from the system to conserve whatever little energy is left in the battery, but also shuts itself off and goes into an extremely low-power shutdown mode, and prevents the battery from going into deep undervoltage state. This is essential as batteries going into deep undervoltage state can become unsafe if recharged.

• Minimizes premature or abrupt device shutdowns via highest battery SOC accuracy without battery characterization
  • ModelGauge m5 EZ algorithm delivers best-in-class accuracy while saving several weeks of time that sending a battery to a lab for characterization and analysis would typically require
  • 97% of tests with ModelGauge m5 EZ have <3% error; Maxim has run such simulations using more than 300 different batteries and 3000 discharges
  • Cycle+ age forecasting provides easy-to-understand prediction of remaining battery life for battery replacement planning or to control fast-charging

• Protection against counterfeiting and cloning with SHA-256 authentication
  • Can have unique as well as dynamic key for every battery

Sorry - the contest has ended! But if you are interested in the Maxim EV Kits, visit the Maxim MAX17301 and MAX17311 pages for more information.