BQ25890HRTWR

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Power management integrated circuits (PMICs) are widely used in electronic applications, and battery chargers are a common part of the PMIC family. The BQ25890HRTWR is one of Texas Instruments\' newest and most advanced battery chargers and is designed for use in a variety of applications. This article will cover the application field and working principle of the BQ25890HRTWR.

Applications of BQ25890HRTWR

The BQ25890HRTWR is a highly efficient battery charger, with an input voltage range from 4.4V to 22V and an output current up to 5A. It is designed to be used in a variety of applications, from portable communication devices and systems to automotive, industrial and medical applications. In these applications, it can be used to charge a variety of battery types, including lithium-ion, lithium-polymer and nickel-metal hydride. It is also capable of delivering power to the system without a battery. This makes it ideal for use in applications where a battery is not present or the battery is fully depleted. Additionally, it can be used to provide power to other ICs and support system power functions.

The BQ25890HRTWR also features a variety of protections, such as over-temperature protection, over-voltage protection, under-voltage protection, over-current protection and reverse current protection. This makes it ideal for use in challenging environments, where the device must be able to reliably operate in a wide range of temperatures and voltages. Additionally, it features a wide temperature range of -40°C to +85°C.

Working Principle of BQ25890HRTWR

The BQ25890HRTWR uses a dual-mode charger design with a programmable current limit. The charger works by monitoring the voltage and current levels of the battery and adjusting the charging levels as needed. In normal charging mode, the charger continuously adjusts the charging voltage and current to maintain an optimal charging level. In charge-termination mode, the charger monitors the battery voltage to determine when the charging is finished.

The BQ25890HRTWR also features an array of safety and protection features. These include over-voltage protection, under-voltage protection, over-temperature protection and reverse current protection. The charger will automatically shut off if the temperature or voltage exceeds a preset limit. Additionally, it features a low-battery warning indicator which can be used to alert the user to the level of charge remaining in the battery.

The BQ25890HRTWR includes an array of features that make it ideal for use in a variety of applications. It is a highly efficient and capable battery charger, capable of providing power to a system without a battery and with a wide range of protections. These features make it an ideal choice for use in portable and automotive applications.

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