BQ2003STR

Battery Chargers Overview

The BQ2003STR is a fast-charge integrated circuit designed for nickel-cadmium (NiCd) and nickel-metal hydride (NiMH) batteries. It implements switch-mode charging with negative delta-voltage (negative dV) and temperature change rate (dT/dt) termination methods to ensure safe and efficient battery conditioning. The device utilizes hysteretic pulse-width modulation current regulation or gated control modes. It operates within a standard commercial temperature range of 0°C to 70°C and is housed in a 16-pin SOIC package.

Battery Chargers Feature Summary

• Supports fast charge and conditioning protocols for NiCd and NiMH battery chemistries
• Integrates negative dV and dT/dt termination sensing for precise charge cycle completion
• Employs hysteretic PWM switch-mode current regulation or gated control architectures

Battery Chargers Applications

• Portable electronic devices requiring NiCd battery management
• Equipment utilizing NiMH rechargeable power sources
• Battery-powered tools needing rapid charge cycles

Battery Chargers Procurement Notes

Verify the specific suffix 'STR' corresponds to the tape-and-reel packaging configuration as defined by Texas Instruments documentation. Confirm that the component meets the required commercial operating temperature range of 0°C to 70°C for the intended application environment. Ensure compatibility with the 16-SOIC footprint during PCB layout validation.

Battery Chargers Selection Notes

Select this component specifically for applications involving nickel-based battery systems rather than lithium-ion chemistries. The design requires integration of external components to support the switch-mode topology. Engineers must account for the hysteretic PWM regulation characteristics when designing the associated power stage and filtering circuits for optimal performance.

Battery Chargers Part Context

This part belongs to the Texas Instruments battery management portfolio, focusing on specialized chargers for older nickel-based technologies. The BQ2003 series addresses the need for efficient charging solutions where weight and size constraints favor switch-mode architectures over linear regulators for NiCd and NiMH cells.

Battery Chargers Replacement Considerations

Direct functional substitutes are not explicitly listed in public documentation. Designers should evaluate other Texas Instruments NiCd/NiMH chargers within the same family for pin-compatible alternatives if supply constraints arise.