ISL6255AHAZ

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ISL6255AHAZ is a battery charging controller designed for high powered mobile applications. It is a low-dropout (LDO) power management integrated circuit (PMIC) from Intersil, Inc., featuring a wide input voltage range and support for both high-current and high-voltage lithium-ion (Li-ion) applications. The IC has a unique combination of features, including a buck–boost controller and battery cell balancing features, enabling it to support a wide range of application requirements. It is particularly well-suited for high powered mobile phone applications.

The ISL6255AHAZ is a single-phase integrated switch-mode synchronous battery charging controller with a wide input voltage range (4.25V to 24V). It features a buck-boost converter and a pre-charge circuit, allowing it to support both low and high current charging requirements. It also integrates a battery cell balancing circuit and temperature sensing capability, providing improved battery life and safety. The IC is capable of delivering up to 8A output current, enabling it to support high-power applications. It also supports trickle charge, fast charge, and pre-charge modes, making it suitable for a wide range of application scenarios.

The battery charger controller’s working principle involves converting the input voltage into a regulated DC voltage, limited by a precision voltage reference. It then uses a high-frequency PWM controlled buck-boost circuit to regulate the output current and voltage. The buck-boost converter also allows the controller to maintain a safe voltage and current region, preventing it from improperly charging the battery. The battery cell balancing circuit works by disconnecting the discharged cell when its voltage reaches a predetermined level. It then charges the cell back up again until the voltage levels of all cells reach a uniform distribution.

The ISL6255AHAZ is suitable for applications in the area of mobile phones, gaming devices, laptops, tablets and many other power products. It provides a cost-effective solution for high-power applications and helps extend battery life with its integrated cell-balancing and thermistor protection features. The device also supports a wide range of communication interface options for remote sensing and control. Overall, the ISL6255AHAZ is an excellent choice for high-powered mobile applications.

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