BQ24751ARHDR

Battery Chargers Overview

The BQ24751ARHDR is a host-controlled multi-chemistry battery charger integrated circuit manufactured by Texas Instruments. It supports 2 to 4 series cells with a maximum battery pack voltage of 18.048V and a maximum charging current of 10A. The device operates on a single supply voltage up to 24V and features programmable constant-current and constant-voltage charging profiles. It includes system power selection, AC over-power protection, and programmable overvoltage protection. The component is housed in a 28-VFQFN (5x5) package with an exposed pad and supports operation across a junction temperature range of -40°C to 125°C.

Battery Chargers Feature Summary

• Host-controlled interface for flexible configuration via I2C-compatible communication
• Integrated system power selector enables seamless transition between adapter and battery sources
• Supports multiple battery chemistries including Li-Ion, Li-Polymer, and NiMH/NiCd
• Built-in AC over-power protection dynamically limits input current to prevent source tripping

Battery Chargers Applications

• Portable medical devices requiring precise battery management
• Industrial handheld equipment and tools
• Consumer electronics with high-capacity battery packs
• IoT gateways and edge computing nodes

Battery Chargers Procurement Notes

Verify the ordering suffix ARHDR corresponds to the tape-and-reel packaging format when sourcing. Confirm that the specific variant matches the required thermal performance and pinout compatibility for your PCB layout. Ensure that the host microcontroller supports the necessary communication protocol for configuring the charger parameters. Cross-reference the manufacturer's latest datasheet to confirm active status and any potential design warnings or recommended layout guidelines.

Battery Chargers Selection Notes

Select this component when a host processor requires direct control over charging parameters for multi-chemistry support. It is suitable for applications needing dynamic input power limiting to protect upstream power supplies. Consider the 28-VFQFN package size for space-constrained designs. Evaluate the need for programmable OVP and system power switching capabilities before choosing over simpler fixed-function chargers.

Battery Chargers Part Context

The BQ24751 family belongs to Texas Instruments' portfolio of advanced battery management solutions. This specific part integrates charging, power path management, and fuel gauge interfaces into a single IC. It is designed for systems where battery longevity and input power efficiency are critical. The device complements other TI PMICs by providing specialized multi-chemistry handling without external discrete components.

Battery Chargers Replacement Considerations

Public confirmed substitutes include BQ24751BRHDR and BQ24751ARHDT within the same product family. These variants share identical functional specifications and pinouts but may differ in packaging quantity or reel specifications. Verify thermal characteristics and electrical parameters against the original datasheet before substitution.