BQ24735RGRT

Battery Chargers Overview

The BQ24735RGRT is a synchronous battery charger IC designed for 1 to 4-cell lithium-ion battery packs. It supports Turbo Boost mode, allowing simultaneous system and battery charging when adapter power is insufficient. The device features an SMBus interface for programmable input current, charge voltage, and charge current limits with high accuracy. It operates within a 4.5V to 24V input range and utilizes a 20-pin VQFN package.

Battery Chargers Feature Summary

• Supports Intel CPU SmartBoost technology by enabling simultaneous system and battery charging via internal charge pumps driving N-channel MOSFETs.
• Provides SMBus-controlled programmability for input current, charge voltage, and charge current limits to ensure precise regulation.
• Integrates enhanced safety features including overvoltage protection, overcurrent protection, and short-circuit protection for the battery, sense resistor, and MOSFETs.

Battery Chargers Applications

• Portable computers and notebooks requiring intelligent power path management
• Industrial equipment utilizing multi-cell lithium-ion battery systems
• Medical devices needing precise battery charging profiles

Battery Chargers Procurement Notes

Verify the suffix RGRT indicates tape and reel packaging distinct from the RGRR tray variant. Confirm RoHS compliance and lead times directly with Texas Instruments or authorized distributors. Ensure the specific order quantity matches the manufacturer's standard reel specifications.

Battery Chargers Selection Notes

Select this component for applications requiring simultaneous AC adapter and battery power delivery to the system load. It is suitable for designs needing high-precision current and voltage regulation managed via SMBus. Consider the 20-VQFN package size for space-constrained PCB layouts.

Battery Chargers Part Context

This part belongs to the BQ2473x family of battery charge controllers from Texas Instruments. It is specifically engineered for multi-cell Li+ batteries in portable computing and industrial sectors. The device integrates power switches and control logic to simplify the design of complex power management systems.

Battery Chargers Replacement Considerations

BQ24735RGRR is a verified alternative offering identical electrical functionality but packaged in trays instead of tape and reel.

Battery Chargers FAQ

How does the device handle system loads exceeding adapter capacity?

It enables Turbo Boost mode, drawing energy from the battery to supplement the adapter, thereby preventing adapter overload while maintaining system operation.

What interface is used for configuration?

Configuration is performed via an SMBus interface, allowing a host microcontroller to program input current, charge voltage, and charge current limits.