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Product Detailed Parameters
- Description：IC BATT FUEL LI-ION 1C 15WLP
- Series：ModelGauge™
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Strip
- Function：Fuel Gauge
- Battery Chemistry：Lithium Ion/Polymer
- Number of Cells：1
- Fault Protection：Over Current, Over Temperature, Over Voltage, Short Circuit
- Interface：1-Wire
- Operating Temperature：-40°C ~ 85°C (TA)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：15-WFBGA, WLBGA
- Supplier Device Package：15-WLP (1.68x2.45)
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Overview
The MAX17311X+ is a 24µA IQ stand-alone pack-side fuel gauge IC with protector and optional SHA-256 authentication for 1-cell lithium-ion/polymer batteries. It monitors voltage, current, temperature, and state of charge using the ModelGauge m5 algorithm. The device provides protection against over/undervoltage, overcurrent, short-circuit, and overtemperature conditions via external high-side N-FETs. It features a 1-Wire or 2-Wire I2C interface for data access.
Feature Summary
- Integrates SHA-256 authentication with a unique 64-bit ID to prevent battery pack cloning.
- Utilizes ModelGauge m5 algorithm combining coulomb counting and voltage-based stability for accurate state-of-charge estimation.
- Provides dynamic power functionality to determine instantaneous maximum battery output power without violating minimum system input voltage.
Applications
- Smartphones, tablets, and 2-in-1 laptops
- Smartwatches and wearables
- Medical devices and health monitors
Procurement Notes
Verify the specific suffix 'X+' against official Analog Devices documentation to confirm package type and tape/reel specifications. Ensure compatibility with the required 1-Wire or I2C interface configuration. Confirm that the integrated SHA-256 authentication key requirements align with your security architecture before procurement.
Selection Notes
Select this component when precise state-of-charge monitoring and anti-cloning security are required for single-cell Li-ion/Polymer packs. The low 24µA standby current makes it suitable for battery-powered applications where extended operational life is critical. Consider the need for external high-side N-FETs for the integrated protection features.
Part Context
This part belongs to the MAX17301–MAX17313 series of ModelGauge m5 EZ Fuel Gauges. These devices are designed for portable electronics requiring accurate battery management. The series differentiates based on specific package options and authentication features while maintaining core fuel gauge accuracy and protection capabilities.
FAQ
What algorithms does the MAX17311X+ use for fuel gauging?
It uses the ModelGauge m5 algorithm, which combines the short-term accuracy of a coulomb counter with the long-term stability of a voltage-based fuel gauge.
How does the device protect the battery?
It protects against over/undervoltage, overcurrent, short-circuit, and over/undertemperature conditions by controlling external high-side N-FETs.
