S-8254AALFT-TB-G

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The S-8254AALFT-TB-G is a highly integrated multi-channel switch mode battery charger designed to charge, maintain, and balance one or two-cell Li-Ion battery packs. This device adopts an innovative charging algorithm jointly developed by ROHM and Fujitsu and based on the usage of a highly efficient and cost-effective multi-channel architecture. The charger\'s output is adjustable from 4.2V to 4.4V in 0.1V increments with a maximum pulse current of 1.5A. The device is capable of operating from input voltages ranging from 6.0V to 12V, making it ideal for use in a variety of industrial, consumer, and automotive applications.

Application Fields

The S-8254AALFT-TB-G is suitable for a wide variety of applications, including automotive, consumer, industrial, and medical. Its features make it an ideal choice for Li-Ion battery systems that require fast, efficient, and reliable charging. It is well suited for applications such as digital camera and power tool battery packs, as well as cell phone and electric vehicle battery packs.

Working Principle

The S-8254AALFT-TB-G utilizes a peak current control scheme to efficiently and accurately charge the battery. This scheme allows for wide input voltage and output voltage ranges while maintaining a consistent charge current level. The peak current is adjusted by a sense resistor between the negative terminal of the battery and ground. The current is then adjusted by adjusting the voltage on the pin to either increase or decrease the peak current.

The S-8254AALFT-TB-G also features safety protection features to ensure the safety of both the battery pack and device. These include overvoltage protection, thermal shutdown, current fold-back, and undervoltage lockout. Additionally, the device is capable of detecting the battery temperature, and automatically adjusts its charging parameters as needed to ensure the best charging for the battery.

The S-8254AALFT-TB-G has built-in short circuit and overcurrent protection, which can detect the load short circuit and automatically stop providing power, preventing the battery and charger from being damaged. It also has internal voltage and current control, temperature cutoff, and automatic shutdown after the charging is completed, further protecting the battery and charger.

The S-8254AALFT-TB-G is a low-risk charger that has been designed to fulfill the highest levels of consumer safety, system cost, and performance requirements, making it ideal for a wide range of applications.

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