BQ2002SN

Overview

The BQ2002SN is a battery management integrated circuit designed for nickel-cadmium (NiCd) and nickel-metal hydride (NiMH) battery packs. It functions as a charge controller and fuel gauge, providing accurate state-of-charge monitoring and protection features. The device operates in a surface-mount SOP-8 package, suitable for compact portable electronic applications requiring reliable power management for rechargeable battery systems.

Feature Summary

• Integrated charge control logic for NiCd and NiMH chemistries
• State-of-charge indication capabilities
• Compact surface-mount packaging

Applications

• Portable consumer electronics
• Medical devices
• Industrial handheld tools

Procurement Notes

Verify the manufacturer origin, as Benchmarq does not typically produce this specific part number; it is commonly associated with Texas Instruments. Confirm the package type is SOP-8 and check for any suffix variations that may indicate different temperature grades or tape-and-reel options. Ensure the component matches the required electrical specifications for your NiCd/NiMH application before procurement.

Selection Notes

Select this component when designing systems with NiCd or NiMH batteries requiring integrated fuel gauging and charging control. Consider the SOP-8 footprint for space-constrained designs. Verify compatibility with the charger topology and ensure the operating voltage range meets the battery pack requirements. Check for alternative pin-compatible parts if supply chain constraints exist.

Part Context

This component belongs to the family of battery management ICs used for secondary cell monitoring. While often linked to Benchmarq in some listings, the BQ2002SN is technically a Texas Instruments product. It serves as a specialized solution for maintaining battery health and indicating remaining capacity in portable devices, distinct from general-purpose power switches or linear regulators.

Replacement Considerations

Check for direct equivalents such as the BQ2002DSN or other variants within the same TI family. Verify pinout compatibility and functional equivalence for NiCd/NiMH support before substitution.