BQ24401DR

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Power management integrated circuits (PMICs) that deliver battery charging and system power management have become an integral part of the modern electronics industry. The Texas Instruments BQ24401DR is an example of a PMIC battery charger specifically designed for 1-cell lithium ion, lithium ion phosphate, or 3-cell nickel metal hydride batteries, and integrated power supply (IPS) applications with a USB port. It simplifies the design and reduces the cost of system designs by consolidating multiple small components for a variety of industrial, automotive and consumer applications into customizable packages.

The BQ24401DR leverages a power-efficient architecture comprising a switched capacitor boost converter and linear charge controller. It features four pre-programmed maximum power stages, adjustable Vcc and Igate control that provide accurate battery voltages and current, optimized USB voltage and current, and system power supply and management optimization. It also includes a low dropout (LDO) regulator, reverse current protection, auto-Detect IC, and dual thermistors.

The BQ24401DR\'s power-efficient architecture is ideal for 1-cell LiIon, LiPO, or 3-cell NIMH battery applications. It is designed to support a wide range of currents up to 100 mA and to provide nine levels of charge current and up to 1000 mA of output. The BQ24401DR supports USB OTG, tunneled battery charging, and low power modes. It features an integrated 12-bit A/D converter and comprehensive power supply, management, and protection features.

The BQ24401DR\'s power sequence is configurable for one to four maximum power stages, allowing the system designer to optimize the charge current and voltage levels for the individual battery or system. At each power stage, the BQ24401DR provides up to 1A of charge current, with programmable minimum and maximum voltage levels, in order to provide optimum power for the connected battery. Furthermore, the BQ24401DR supports an adjustable minimum output current, allowing fast charge and improved battery lifespan. Finally, the BQ24401DR’s minimum output current is adjustable in 256 steps.

The BQ24401DR supports tunneled battery charging, enabling it to detect the type of battery connected and automatically adjust its charging parameters accordingly. This is beneficial in applications where multiple battery chemistry types are used. Additionally, the BQ24401DR offers an integrated auto-Detect IC, allowing the charger to recognize when a USB cable is attached and also detect any faults in the USB cable or the power adapter. Finally, the BQ24401DR supports reverse current protection, protecting against electrical shorts and damage.

The BQ24401DR is an efficient and versatile PMIC offering a range of features for 1-cell LiIon, LiPO and 3-cell NIMH battery applications. Its adjustable Vcc, Igate, and minimum output current settings enable it to be tailored to a variety of industrial, automotive, and consumer system designs. Its integrated power supply and management solutions, tunneling of battery chemistries, and reverse current protection make it a suitable choice for any PMIC battery charger system design.

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