ISL95538BHRTZ-T

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The ISL95538BHRTZ-T is a programmable, monolithic chimney-style, single cell Li-ion battery charger. It is a PMIC that is specifically designed for portable, handheld devices such as phones, tablets, and other consumer electronics. The ISL95538BHRTZ-T works to maximize battery life, enable fast, efficient charging, and provide flexibility to meet customer-specific designs.

Application Field

The ISL95538BHRTZ-T charger offers a complete battery charging solution, as well as a number of safety features to protect the battery during charging. It is designed for high current single cell Li-ion battery chargers, and is ideal for applications such as cellular phones and handheld computing devices. It provides fast, accurate charging to maximize battery life while minimizing the time required to fully charge a battery.

Features such as adjustable charge current and voltage, thermal overload protection, and logic supply are all included in the design of the ISL95538BHRTZ-T, ensuring a safe charging experience for the user. Additionally, the charger includes an on-board charge control and error recovery circuits which provide improved efficiency and accuracy when monitoring the battery and charging current.

Working Principle

The ISL95538BHRTZ-T charger employs a chimney-style, two-stage charging system. This system consists of a constant current phase and a constant voltage phase. During the constant current phase, the charger will adjust the current as required to provide the correct charging current to the battery. The current can be adjusted from 0 to 2.5A by programming the internal registers.

During the constant voltage phase, the charger functions to maintain a safe charging voltage until the battery is fully charged. The termination voltage level can be programmed through the internal registers, allowing the user to select the optimal voltage level for their specific battery.

The ISL95538BHRTZ-T charger also employs several safety features designed to protect the battery from being overcharged or overheated. These features include a cell mismatch protection, thermal shutdown protection, and status flags that indicate the current charge status of the battery. Additionally, the charger includes dual FETs which allow for more control over the charging current.

The ISL95538BHRTZ-T charger is an ideal solution for portable consumer electronics, providing a fast, efficient, and safe charging solution for single cell Li-ion batteries. With features such as adjustable charging current and voltage, thermal protection, and status flags, it is easy to customize the charger to meet specific design requirements.

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