MAX17040G+U

Overview

The MAX17040G+U is a compact, low-cost host-side fuel gauge system designed for single lithium-ion (Li+) batteries in handheld and portable equipment. It utilizes the ModelGauge algorithm to calculate accurate relative state of charge without requiring a sense resistor or full-to-empty battery relearning. The device features precision voltage measurement with ±12.5mV accuracy up to 5.00V. It operates within a supply voltage range of 2.5V to 4.5V and consumes only 23µA of operating current. The component is housed in an ultra-tiny 8-pin TDFN package measuring 2mm x 3mm.

Feature Summary

• Host-side fuel gauging capability for single-cell lithium-ion applications
• ModelGauge algorithm enables accurate relative capacity calculation without offset accumulation
• Eliminates the need for external sense resistors and battery relearning cycles
• Ultra-compact lead-free TDFN packaging suitable for space-constrained designs

Applications

• Smartphones and tablets
• Health and fitness monitors
• Medical devices
• Digital still, video, and action cameras
• Handheld computers and terminals

Procurement Notes

Verify the specific suffix G+U against the manufacturer's official datasheet to confirm the TDFN-8 package configuration. Ensure compatibility with the required I2C interface and voltage levels. Confirm RoHS compliance status through official documentation before integration. Check for any recent product change notices that may affect pinout or electrical characteristics.

Selection Notes

Select this component for applications requiring precise state-of-charge monitoring in single-cell lithium systems where board space is limited. The absence of a sense resistor requirement simplifies the bill of materials and reduces power loss. Verify that the host processor supports the necessary communication protocol. Consider the operating temperature range and package thermal properties for the specific enclosure design.

Part Context

This part belongs to the MAX1704x series of fuel gauges from Analog Devices/Maxim Integrated. It is specifically configured for one-cell lithium packs, distinguishing it from the dual-cell MAX17041 variant. The series is characterized by its low cost and high integration level, targeting consumer electronics markets.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.