ISL88731HRZ

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ISL88731HRZ Application Field and Working Principle

The ISL88731HRZ is an integrated Battery Pchargeotection and Management IC from Intersil. It is an economical solution for managing batteries safely, efficiently, and reliably in portable electronic equipment. It blends together the functions of a general purpose microcontroller, a battery charge controller, a battery monitor, and a battery protector in an integrated form factor. The ISL88731HRZ is suitable for various battery-powered applications, from medical equipment to telecommunication and wireless devices.

Features

• High Efficiency Battery Charger with Multiple Monitoring and Protection Features
• Integrated Proportional-Integral (PI) Controllers for Fast and Accurate Charging
• Charging Current up to 3A
• Real-Time Battery Voltage, Current, Temperature, and Capacity Measurement
• On-Chip Compensation Network for Improved PI Controller Performance
• Fault Status GPIOs to Assist System Troubleshooting
• Configurable Status/Alarm Reporting Thresholds
• Supports Battery Types Li-Ion and Li-Polymer
• Low Standby Current Consumption
• Space-Saving 20-Lead TQFN 4x4mm2 Package

Working Principle

The ISL88731HRZ integrates all the necessary components for safe and reliable Li-Ion/Li-Polymer battery charging. It includes a power management microcontroller, voltage, current and temperature monitors, a high-output charge controller, a configurable peak current limit, and on-chip compensation components. The different components work together to ensure that the correct charge current is supplied to the battery so that it can be charged quickly and efficiently while maintaining a safe charging limit that is compliant with battery manufacturer’s specifications. The integrated over-temperature protection and fault sensing features prevents destructive events such as overcharging and melting of the battery.

Application Field

The ISL88731HRZ can be used in a wide range of portable device applications such as smartphones, tablets, wearables, and patient monitors. It provides a high-performance battery charger with monitoring capabilities, enabling designers to create power supplies that meet the highest standards of safety, reliability, and efficiency. The convenient configurability of the IC allows designers to quickly and easily customize the design for a specific application, and reduce system cost by removing the need for a dedicated microcontroller.

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