BQ2002SNTRG4

Overview

The BQ2002SNTRG4 is a low-cost CMOS battery-charge controller designed for NiCd and NiMH batteries. It provides reliable charge termination using delta-V detection and thermal monitoring. The device operates with a supply voltage range of 0V to 6V and supports a maximum charge current of 2000mA. It is housed in an 8-pin SOIC package and functions within an operating temperature range of 0°C to 70°C.

Feature Summary

• Provides reliable charge termination for NiCd and NiMH chemistries via delta-V detection
• Integrates thermal monitoring to prevent overheating during the charging process
• Designed as a low-cost solution for fast-charge management applications

Applications

• NiCd battery pack charging systems
• NiMH battery pack charging systems
• Portable electronic devices requiring fast-charge management

Procurement Notes

Verify that the component matches the specific Texas Instruments part number BQ2002SNTRG4, noting the TRG4 suffix indicates tape-and-reel packaging and RoHS compliance. Confirm the 8-SOIC package type and ensure the supplier provides valid documentation confirming the lead-free status and production lifecycle stage. Cross-reference the manufacturer's official datasheet to validate the specified electrical parameters before procurement.

Selection Notes

Select this component when designing circuits for NiCd or NiMH battery packs requiring cost-effective fast-charge control. Ensure the application environment stays within the 0°C to 70°C operating temperature range. Verify that the system power supply aligns with the 0V to 6V input voltage limits. Consider the 8-SOIC package constraints for PCB layout and thermal dissipation requirements relative to the 2000mA maximum charge current capability.

Part Context

This IC belongs to the bq2002 family of battery-charge controllers from Texas Instruments. The family includes variants such as the bq2002/F, which share similar core functionalities for NiCd and NiMH battery management. These components are categorized under battery management ICs and are intended for applications needing reliable charge termination without complex microcontroller intervention.

Replacement Considerations

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