BQ2004PN

Battery Chargers Overview

The BQ2004PN is a nickel-cadmium and nickel-metal hydride buck charger integrated circuit manufactured by Texas Instruments. It operates within a supply voltage range of up to 5.5V and supports charging currents up to 2000mA. The device utilizes hysteretic PWM switch-mode current regulation for efficient power management. It features negative delta-V, potential void detection (PVD), and dT/dt termination methods to ensure safe battery charging cycles. The component is housed in a 16-pin PDIP package and functions reliably across an operating temperature range of -20°C to +70°C.

Battery Chargers Feature Summary

• Supports fast charge and conditioning protocols for nickel-cadmium and nickel-metal hydride battery chemistries
• Implements hysteretic PWM switch-mode current regulation for efficient energy conversion
• Integrates multiple termination strategies including negative delta-V, potential void detection, and rate-of-temperature-rise monitoring

Battery Chargers Applications

• Portable electronic devices requiring NiCd or NiMH battery management
• Power tools utilizing rechargeable nickel-based battery packs
• Consumer electronics with dedicated charging circuits for older battery standards

Battery Chargers Procurement Notes

Verify the specific suffix designation when ordering, as packaging and material compositions may vary between variants such as the standard PN and HSN versions. Confirm that the required termination logic aligns with your battery pack's characteristics before finalizing procurement. Ensure compatibility with your system's input voltage limits and thermal environment specifications.

Battery Chargers Selection Notes

Select this component specifically for applications requiring dedicated control of nickel-based battery chemistries rather than lithium-ion systems. Consider the PDIP package constraints if board space is limited, as surface-mount alternatives like the HSN variant exist. Evaluate whether the integrated hysteretic regulation meets your efficiency requirements compared to linear solutions.

Battery Chargers Part Context

This part belongs to the BQ2004 family of battery chargers designed for non-lithium chemistries. It serves as a specialized solution for managing charge cycles where precise termination based on voltage drop or temperature change is critical. The family includes variations in package types to accommodate different manufacturing assembly needs while maintaining identical core functionality.

Battery Chargers Replacement Considerations

Publicly confirmed substitute part numbers include the BQ2004HSN, which offers the same functional capabilities in a surface-mount SOIC package. Other modern replacements may require significant circuit redesign due to differing chemistry support.