BQ24103RHLRG4

Battery Chargers Overview

The BQ24103RHLRG4 is a standalone synchronous switch-mode Li-Ion and Li-Polymer charge-management IC from Texas Instruments, part of the bqSWITCHER family. It integrates high-side N-channel power FETs for efficient charging in a compact 20-pin VQFN package (3.5x4.5 mm). The device supports an input voltage range of 4.35 V to 16 V and delivers a programmable maximum charge current of 2 A. It features a regulated battery voltage of 4.2 V and operates within a temperature range of -40°C to +85°C.

Battery Chargers Feature Summary

• Integrates high-side N-channel power FETs for a compact, single-chip solution
• Supports synchronous switched-mode operation for high efficiency
• Includes thermal regulation and input current limit management

Battery Chargers Applications

• Portable consumer electronics
• Medical devices
• Industrial handheld instruments
• Communication equipment

Battery Chargers Procurement Notes

Verify the specific suffix RHLRG4 against the manufacturer's official datasheet to confirm pinout, lead finish, and RoHS compliance status. Ensure the ordering code matches the required tape-and-reel packaging quantity. Cross-reference with the latest product change notices to confirm availability and any potential design-in restrictions or end-of-life notifications.

Battery Chargers Selection Notes

Select this component for applications requiring a small footprint and high-efficiency charging without external MOSFETs. It is suitable for systems needing up to 2 A charge current with a wide input voltage range. Consider the thermal performance requirements due to integrated FETs and ensure the PCB layout supports the VQFN package's exposed pad for heat dissipation.

Battery Chargers Part Context

This device belongs to the bqSWITCHER family of synchronous switch-mode chargers. It is designed to replace linear chargers in space-constrained applications where higher efficiency and lower heat dissipation are critical. The integration of power switches reduces the bill of materials and simplifies the design process compared to asynchronous solutions.

Battery Chargers Replacement Considerations

Check for direct pin-to-pin replacements within the same bqSWITCHER family, such as the BQ24100 series, ensuring compatibility with the 20-VQFN package and similar electrical characteristics. Verify that any substitute maintains the required 2 A output capability and input voltage range.