MAX8903FETI+T

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The MAX8903FETI+T is a Power Management Integrated Circuit (PMIC) specifically designed for battery charging applications. It is a highly integrated charger solution that reduces solution size, simplifies design, and increases system reliability. This PMIC can be used with a variety of batteries, including Li-Ion, LiPo and LiFePo, which makes it the ideal charger for a wide variety of applications, such as wearables, medical and industrial designs.

Technical Specifications

The MAX8903FETI+T features a wide input voltage range of 4.5V to 22V, and supports up to two Li-Ion/LiPo cells. It has an output voltage of 4.2V, with up to 7A of charging current and up to 10A of peak current. It is also designed to provide system protection, with no-load and over-current protections, and over-temperature protection. Additionally, the MAX8903FETI+T features a SmartStart feature which prevents overloading of systems with high capacitive loads.

Design Features

The MAX8903FETI+T includes several design features that make it an ideal solution for battery charging applications. First, it has a low overall quiescent current that helps reduce power consumption in applications that need to remain in standby or idle modes. It also includes an inductorless power circulation design that increases system reliability, and a cold start circuit that helps reduce power loss from cold starts. Additionally, the device features jump start capability that enables the device to charge through a wide voltage range without any external components.

Working Principle

The principle of the MAX8903FETI+T is a simple but effective one. When first activated, the device will sense the battery voltage and adjust the charge current accordingly. The device then offers up to 10A of peak current to get the charging process started. Once the battery voltage reaches 4.2V, the device switches to a trickle charge mode, in which the charge current is set to a lower, more sustainable level. At the same time, the power management of the PMIC will keep an eye on the battery temperature and voltage, and adjust the charge current accordingly to ensure a safe and effective charging process.

Conclusion

The MAX8903FETI+T is an ideal PMIC for battery charging applications, providing a high level of integration and protection, and a wide input voltage range. It is designed with a variety of features that allow for increased system reliability, reduced power consumption, and improved charging performance. The MAX8903FETI+T is the perfect solution for a variety of applications that require a reliable, efficient battery charging solution.

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