BQ2031SN-A5G4

Battery Chargers Overview

The BQ2031SN-A5G4 is a monolithic CMOS integrated circuit designed as a switchmode charge controller for lead-acid batteries. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a maximum charging current of 2 A. The device utilizes a 16-SOIC surface-mount package with an operating temperature range of -20°C to +70°C. It features programmable current, timer, and voltage parameters, along with built-in over-temperature and over-voltage fault protection mechanisms.

Battery Chargers Feature Summary

• Implements a two-stage constant-current charging algorithm specifically optimized for lead-acid battery chemistries.
• Integrates thermal monitoring that suspends charging cycles when temperatures exceed operational limits.
• Provides configurable LED driver outputs to indicate charge status through selectable display modes.

Battery Chargers Applications

• Lead-acid battery management systems requiring switchmode charge control
• Uninterruptible power supply (UPS) units utilizing single-cell lead-acid configurations
• Portable electronic devices powered by sealed lead-acid batteries

Battery Chargers Procurement Notes

Verify component availability carefully as this specific suffix variant may be discontinued or subject to limited stock constraints. Confirm compatibility with the base BQ2031 series specifications during procurement planning. Ensure that the 16-SOIC package dimensions align with existing PCB footprints. Cross-reference datasheet revisions to guarantee functional equivalence if sourcing from secondary distributors.

Battery Chargers Selection Notes

Select this component for applications requiring dedicated lead-acid battery charging profiles rather than generic lithium-based solutions. Consider the 2 A output current capability against system load requirements. Evaluate the need for programmable timing and voltage settings to match specific battery characteristics. Assess the thermal management requirements given the integrated temperature monitoring functionality.

Battery Chargers Part Context

This part belongs to the BQ2031 family of battery charge management ICs manufactured by Texas Instruments. The family focuses on providing robust charging algorithms for various battery types, with this specific model targeting lead-acid applications. It represents a specialized solution within the broader power management portfolio, offering integrated control logic for efficient energy transfer.

Battery Chargers Replacement Considerations

The BQ2031SN-A5 is listed as a manufacturer-recommended alternative. Verify pinout compatibility and electrical parameter alignment before substitution. Other similar devices like the BQ24650RVAR exist but may require significant circuit redesign due to differing interface or performance characteristics.