MAX17043X+

Overview

The MAX17043X+ is a compact, low-cost host-side fuel gauge system designed for single-cell lithium-ion batteries in portable equipment. It utilizes the ModelGauge algorithm to track relative state-of-charge without external current-sense resistors or battery relearn cycles. The device operates within a supply voltage range of 2.5 V to 4.5 V and draws a typical operating current of 50 µA. It features precision voltage measurement with ±12.5 mV accuracy up to 5.00 V and includes an external alarm for low-battery warnings. The component is housed in a lead-free UCSP-9 package.

Feature Summary

• Implements ModelGauge algorithm for accurate relative capacity calculation without offset accumulation
• Eliminates requirement for external current-sense resistor and full-to-empty battery relearning
• Provides precision voltage measurement with specified accuracy limits for single-cell monitoring
• Supports low-battery alert via external interrupt and I2C interface access

Applications

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

Procurement Notes

Verify availability status carefully as this part number may be subject to limited supply or discontinuation. Confirm RoHS compliance details through official documentation before integration. Ensure the UCSP-9 package variant matches your PCB layout requirements. Cross-reference with authorized distributors to validate authenticity and sourcing channels for this specific Analog Devices/Maxim Integrated component.

Selection Notes

Select this component for applications requiring precise single-cell lithium-ion battery monitoring without the complexity of coulomb counting. The ModelGauge algorithm reduces design effort by removing the need for sense resistors and calibration cycles. Consider the UCSP-9 package size for space-constrained designs. Verify that the 2.5 V to 4.5 V operating range aligns with your system power architecture.

Part Context

The MAX17043X+ belongs to the MAX17043 series of fuel gauges from Maxim Integrated, now part of Analog Devices. This series is engineered for portable electronics where battery life prediction is critical. The X+ suffix typically denotes a specific package or temperature grade variant within the broader MAX17043 family, which also includes models like the MAX17044 for dual-cell configurations.

Replacement Considerations

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