ISL9221IRZ

Battery Chargers Overview

The ISL9221IRZ is a single-cell lithium-ion/polymer battery charger IC manufactured by Renesas Electronics Corporation. It features a maximum programmable charging current of 1.2A and supports a battery pack voltage of 4.2V. The device operates with a supply voltage up to 6.7V and includes an USB interface for connectivity. Housed in a 12-DFN (4x3) package with a bare pad, it is designed for surface mount installation. The component functions within a temperature range of -40°C to 85°C and provides fault protection against overvoltage and reverse current conditions.

Battery Chargers Feature Summary

• Supports constant-current/constant-voltage charging profiles for single-cell lithium-ion and polymer batteries
• Integrates hardware-based fault protection mechanisms including overvoltage and reverse current safeguards
• Features a compact 12-DFN surface-mount package optimized for space-constrained portable designs

Battery Chargers Applications

• Portable electronic devices requiring single-cell battery management
• Consumer electronics utilizing lithium-ion or lithium-polymer power sources
• USB-powered charging systems for mobile accessories

Battery Chargers Procurement Notes

Verify component status as the ISL9221IRZ is listed as obsolete. Confirm availability of alternative packaging options such as tape and reel if standard tube quantities are unavailable. Ensure compatibility with existing PCB footprints and validate that replacement components meet required electrical specifications for your specific application design.

Battery Chargers Selection Notes

Select this component for applications requiring a dedicated single-cell charger with integrated USB interface capabilities. Consider the 12-DFN package dimensions for layout constraints. Evaluate the 1.2A maximum current rating against system power requirements. Verify thermal performance within the specified operating temperature range to ensure reliable operation under varying environmental conditions.

Battery Chargers Part Context

The ISL9221 belongs to Renesas' portfolio of power management integrated circuits focused on battery charging solutions. It is part of the broader ISL92xx series designed for portable electronics. The device addresses the need for efficient, compact charging management in consumer gadgets, distinguishing itself through integrated fault protection and USB interface support within a small form factor.

Battery Chargers Replacement Considerations

Check for direct substitutes from the ISL92xx family. Verify pinout compatibility and electrical parameter alignment before substitution.