BQ2003S-NTR

Overview

The BQ2003S-NTR is a switch-mode battery charger IC designed for NiCd and NiMH chemistries. It integrates negative delta-voltage (dV) and temperature rate-of-change (dT/dt) termination to ensure safe charging profiles. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports output currents up to 2 A. It is housed in a 16-pin SOIC (DW) package, suitable for surface-mount assembly across an operating temperature range of -40°C to +85°C.

Feature Summary

• Supports negative dV and dT/dt termination methods for precise charge cycle control
• Switch-mode architecture enables efficient power conversion for battery charging applications

Applications

• Portable electronic devices requiring NiCd or NiMH battery management
• Consumer electronics utilizing rechargeable nickel-based cells
• Industrial equipment with sealed nickel-cadmium or nickel-metal hydride power sources

Procurement Notes

Verify the specific suffix 'NTR' corresponds to the tape-and-reel packaging configuration required for your assembly line. Confirm that the component meets RoHS compliance standards if mandated by your regional regulations. Ensure the 16-pin SOIC footprint matches your PCB design constraints before finalizing procurement orders.

Selection Notes

Select this component when designing systems specifically for nickel-based battery chemistries rather than lithium-ion variants. The integrated termination logic reduces external component count compared to linear chargers. Verify that the input voltage source remains stable within the 4.5 V to 5.5 V window to maintain proper regulation and termination accuracy during operation.

Part Context

This part belongs to Texas Instruments' portfolio of battery management solutions. It serves as a dedicated fast-charge controller for non-lithium chemistries. The device distinguishes itself through integrated safety termination features, eliminating the need for complex external monitoring circuits typically required in basic charging topologies.

Replacement Considerations

Direct substitutes are not explicitly confirmed in public documentation. Evaluate alternative TI models such as the BQ20xx series for similar nickel chemistry support. Verify pin compatibility and thermal performance before substituting, as package dimensions and electrical characteristics may differ significantly between product generations.