BQ24401PWR

Battery Chargers Overview

The BQ24401PWR is a programmable switch-mode battery charger designed for NiCd and NiMH cells. It operates from a 5 V supply and integrates an internal power MOSFET, enabling a compact solution without external current-sensing resistors. The device supports dT/dt termination to detect the peak voltage drop characteristic of these chemistries, ensuring safe charging. It features a thermal regulation loop that reduces charge current when die temperature limits are reached. The component is housed in an 8-pin TSSOP package.

Battery Chargers Feature Summary

• Integrates an internal power MOSFET to eliminate the need for external current-sense resistors
• Supports dT/dt termination for accurate detection of full-charge conditions in NiCd/NiMH batteries
• Includes thermal regulation circuitry to manage heat dissipation during high-current charging

Battery Chargers Applications

• Portable electronic devices requiring NiCd or NiMH battery charging
• Consumer electronics with limited board space constraints
• Battery management systems utilizing switch-mode topologies

Battery Chargers Procurement Notes

Verify the specific suffix against the manufacturer's official documentation to confirm pinout compatibility and environmental ratings. Ensure the ordering part number matches the required package variant and termination style. Cross-reference the datasheet revision date to validate feature availability and electrical specifications before finalizing procurement decisions.

Battery Chargers Selection Notes

Select this component for applications requiring efficient charging of nickel-based chemistries where board area is limited. The integrated MOSFET simplifies the bill of materials by removing external sense components. Consider the thermal performance requirements relative to the expected charge current and ambient operating conditions.

Battery Chargers Part Context

This device belongs to Texas Instruments' family of programmable fast-charge management ICs. It serves as a specialized solution for non-lithium battery types, distinguishing itself from lithium-focused chargers through its specific termination algorithms. The PWR suffix indicates the TSSOP surface-mount packaging configuration.

Battery Chargers Replacement Considerations

The BQ24401D is a documented equivalent offering identical functionality in a SOIC package. Verify pin-to-pin compatibility and thermal characteristics when substituting between the TSSOP and SOIC form factors.