DS2740BU+

Overview

The DS2740BU+ is a high-precision coulomb counter designed for battery management applications. It operates within a supply voltage range of 2.7 V to 5.5 V and supports Lithium-ion and Nickel Metal Hydride (NiMH) battery types. The component utilizes an 8-pin UMAX package with surface mount installation. It functions effectively across an extended temperature range from -40°C to +85°C, ensuring reliable performance in various environmental conditions.

Feature Summary

• Provides precise coulomb counting capabilities for accurate state-of-charge monitoring
• Integrates a single-wire interface for simplified communication with host microcontrollers
• Includes internal calibration mechanisms to minimize measurement offset errors

Applications

• Portable electronic devices requiring accurate battery level indication
• Medical equipment utilizing rechargeable battery systems
• Industrial handheld tools with NiMH or Li-ion power sources

Procurement Notes

Verify the specific suffix designation when ordering, as packaging variations such as tube versus tape and reel may exist. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the selected variant matches the required operating temperature range for the intended application environment.

Selection Notes

Select this component when high accuracy in charge tracking is critical for system safety and user experience. Consider the 8-pin UMAX package constraints during PCB layout planning. Evaluate the single-wire interface requirements against available microcontroller resources to ensure compatibility with the chosen communication protocol.

Part Context

This device belongs to the Maxim Integrated battery management portfolio, specifically focusing on fuel gauge solutions. It complements other protection and charging ICs by providing detailed energy consumption data. The series is engineered for compact form factors common in modern portable electronics.

Replacement Considerations

Consult official datasheets for direct pin-compatible alternatives within the same product family. Verify functional equivalence regarding accuracy specifications and interface protocols before substitution.