BQ24740 Battery Charging Synchronous Buck Converter TI

Advanced Battery Charging Solution

The Texas Instruments BQ24740 is a high-efficiency, synchronous buck converter specifically designed for battery charging applications. This package includes two brand new BQ24740 chips, ensuring you have a spare or can service multiple devices. Renowned for its reliability and performance, the BQ24740 integrates advanced features to manage power delivery to batteries effectively. Its synchronous operation contributes to higher efficiency and reduced heat generation, making it a preferred choice for compact and power-sensitive electronic systems requiring robust battery management.

BQ24740 Features and QFN Package

This offering provides two pieces of the BQ24740, also identifiable by markings BQ24740RHDR and 24740 TI. Each integrated circuit is housed in a 28 LD QFN (Quad Flat No-leads) package, known for its small footprint and excellent thermal performance. This package type is ideal for space-constrained applications common in modern portable electronics. The chips are brand new and supplied in a reel package, maintaining their pristine condition until they are ready for assembly, ensuring optimal performance upon installation.

Efficient Power Conversion with Synchronous Operation

The BQ24740 synchronous buck converter architecture is engineered for superior power conversion efficiency. By utilizing synchronous rectification, it minimizes power losses typically associated with diode rectification, leading to cooler operation and extended battery life for the end device. This efficiency is crucial for portable devices where battery longevity and thermal management are paramount. The BQ24740 excels in providing a stable and regulated charging current, adapting to various battery chemistries and charging profiles with precision.

Versatile Applications for BQ24740

While commonly found in laptop battery charging circuits, the BQ24740's versatility extends to a wide range of portable and battery-powered equipment. This includes tablet PCs, portable medical devices, industrial handhelds, and other electronics requiring efficient battery management. Its ability to handle different input voltages and provide accurate charge control makes it suitable for diverse applications. The Texas Instruments BQ24740 is a reliable component for designing sophisticated power management systems in modern electronics.

Essential Skills for BQ24740 Replacement

Replacing the BQ24740 integrated circuit requires specialized skills and equipment. Due to its QFN package, a hot-air soldering station and a pre-heating station are necessary for successful removal and installation. This task is recommended for experienced technicians or electronics hobbyists familiar with surface-mount device (SMD) rework. Attempting this replacement without the proper tools or expertise could result in damage to the chip or the device's printed circuit board (PCB).

Electrostatic Discharge (ESD) Precautions

The BQ24740 is an Electrostatic Discharge (ESD) sensitive device. Proper ESD handling practices must be strictly followed during storage, handling, and assembly to prevent damage. This includes using grounded wrist straps, ESD-safe mats, and appropriate tools. Failure to observe ESD precautions can lead to latent or catastrophic failure of the component, compromising its functionality and the reliability of the electronic device it's installed in. Always work in an ESD-controlled environment when dealing with these sensitive chips.

Prebaking Procedure for Moisture Removal

To ensure the integrity of the BQ24740 during the reflow soldering process, it is crucial to prebake the chip. This involves heating the component at 125 degrees Celsius for 24 hours. This prebaking step removes any absorbed moisture, preventing the "popcorning" effect and potential internal damage when the chip is exposed to high reflow temperatures. Adhering to this procedure is vital for achieving a reliable solder joint and maintaining the long-term performance of the integrated circuit.

Authentic Components and Warranty

You will receive two genuine Texas Instruments BQ24740 battery charging synchronous buck converters, exactly as depicted in the product pictures. These chips are brand new and come with a 180-day warranty, providing assurance of their quality and functionality. This warranty covers defects in the components themselves, ensuring you receive a reliable product for your repair or manufacturing needs. Trust in these authentic parts for your critical power management applications, backed by our commitment to quality.