BQ2003STRG4

Battery Chargers Overview

The BQ2003STRG4 is a multi-chemistry battery charger IC from Texas Instruments, designed for switch-mode charging of nickel-cadmium and nickel-metal hydride batteries. It incorporates negative delta-V (dV) and temperature rate-of-change (dT/dt) termination functions to ensure safe and efficient charging cycles. The device operates within a voltage supply range of 0V to 5.5V and supports a maximum switching frequency of 300kHz. Packaged in a 16-pin SOIC format, it allows for programmable timer and voltage features to accommodate various battery configurations.

Battery Chargers Feature Summary

• Supports switch-mode charging for nickel-cadmium and nickel-metal hydride battery chemistries
• Integrates negative dV and dT/dt termination functions for precise charge cycle control
• Features programmable timer and voltage settings for flexible battery management

Battery Chargers Applications

• Portable electronic devices requiring NiCd or NiMH battery charging
• Consumer electronics with switch-mode power constraints
• Battery-powered tools utilizing nickel-based cells

Battery Chargers Procurement Notes

Verify the specific suffix 'G4' indicates RoHS compliance and green material status as per Texas Instruments standards. Confirm the package type matches the required 16-SOIC footprint for PCB layout compatibility. Ensure the operating voltage range aligns with the system's power supply rails before integration.

Battery Chargers Selection Notes

Select this component when designing chargers for nickel-based chemistries requiring advanced termination logic. It is suitable for applications where space efficiency is critical due to its switch-mode architecture. Consider the programmability requirements for voltage and timer settings against the target battery specifications.

Battery Chargers Part Context

This part belongs to the BQ2003 series of battery charge controllers. It is distinct from lithium-ion specific chargers like the BQ24103, focusing instead on the unique termination needs of nickel-cadmium and nickel-metal hydride cells. The STRG4 designation specifies the tape-and-reel packaging and environmental compliance.

Battery Chargers Replacement Considerations

Direct substitutes must support switch-mode NiCd/NiMH charging with dV/dT termination. Verify pinout compatibility if replacing with other TI nickel chargers. Generic linear chargers may not offer the same efficiency or termination accuracy.