BQ2003PN

Overview

The BQ2003PN is a fast-charge integrated circuit designed for nickel-cadmium and nickel-metal hydride batteries. It utilizes hysteretic PWM switch-mode current regulation to manage charging profiles efficiently. The device supports input voltages from 0V to 5.5V and delivers a maximum output current of 2A. Packaged in a 16-pin PDIP, it integrates control logic for battery conditioning and rapid charge cycles without requiring external microcontrollers.

Feature Summary

• Fast charge and conditioning capability for nickel-based chemistries
• Hysteretic PWM switch-mode current regulation architecture
• Integrated controller eliminating need for external processing

Applications

• Nickel-cadmium battery pack charging systems
• Nickel-metal hydride battery conditioning circuits
• Portable electronic device power management modules

Procurement Notes

Verify the specific suffix designation against the manufacturer's official documentation to confirm exact package type and temperature range specifications. Ensure compatibility with existing nickel-based battery architectures before integration. Cross-reference pinout configurations with the latest datasheet revision to prevent interface mismatches during PCB layout and assembly processes.

Selection Notes

Select this component specifically for applications requiring dedicated fast-charge control for NiCd or NiMH cells. Evaluate system voltage requirements against the 0V to 5.5V input range constraint. Confirm that the 2A current limit aligns with battery capacity and thermal dissipation capabilities within the target enclosure design constraints.

Part Context

This part belongs to Texas Instruments' battery management portfolio, focusing on single-cell or small pack management for rechargeable nickel-based technologies. It serves as a specialized controller distinct from lithium-ion solutions, addressing the specific voltage profiles and safety requirements inherent to nickel chemistry charging cycles.

Replacement Considerations

Consult official substitution guides for direct equivalents. Verify functional compatibility regarding hysteretic PWM operation and nickel-specific charging algorithms when evaluating alternative sources or updated revisions.