ISL6256HRZ-T

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The ISL6256HRZ-T is an integrated Battery Charger from Intersil’s ISL6252HRZ family. It helps to efficiently manage charge/discharge of battery powered devices. It incorporates a reverse blocking relay to protect the system from overvoltage. The compact form factor, low-power consumption, and system-level control by microcontroller simplifies the battery management design. This part is ideal for handheld and portable device applications.

The application fields of ISL6256HRZ-T include mobile phones and tablets, industrial systems, laptop computers, and other battery-powered devices.

ISL6256HRZ-T is designed to address a wide range of single-cell Li-ion/Li-polymer battery applications. It features a constant current/constant voltage (CC/CV) battery charging control with input current and charging current limit regulation. It also features overvoltage protection. The reverse blocking FET allows it to be used with insulated battery systems.

The main working principle of ISL6256HRZ-T is current-limited constant-voltage charging, with a CC/CV switchover profile. The charging algorithm includes charge-pulsing, enabling pulsewidth modulation for a lower ripple current. The charger uses a current limit of 1.5A and an upper voltage limit of 4.2V.

The device implements an AC disconnect input, allowing delayed power on and soft start during charge cycle initiation. When either the AC or DC input supply is disconnected, the device will automatically shut off the reverse blocking switch. This prevents current from flowing back into the input supply when the AC input is disconnected.

In addition, ISL6256HRZ-T implements several safety measures, such as overvoltage protection, over temperature protection, and reverse load protection. The device also includes a low-battery alert output, signaling the user to recharge the battery.

The ISL6256HRZ-T is a high-performance, cost-effective solution for single-cell Li-ion/Li-polymer battery applications. With its built-in protection mechanisms and extensive system-level control, the device is a reliable and safe solution for battery-powered devices.

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