ISL78228ARZ

Voltage Regulators - DC DC Switching Regulators Overview

The ISL78228ARZ is a dual synchronous step-down DC/DC regulator manufactured by Renesas Electronics Corporation. It delivers up to 800mA continuous output current per channel with low quiescent current characteristics. The device operates at a fixed switching frequency of 2.25MHz and supports an input voltage range suitable for various power applications. It features adjustable output voltages starting from 0.6V, housed in a compact 10-DFN package with an exposed pad.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Dual-channel synchronous buck topology for independent or interleaved operation
• High efficiency design optimized for low quiescent current consumption
• Integrated soft-start and protection mechanisms for stable regulation

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring efficient dual-rail power
• Industrial control systems with multiple low-power logic supplies
• Automotive infotainment subsystems needing compact regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'ARZ' confirms automotive grade qualification and RoHS compliance. Confirm the 10-DFN package variant matches your PCB footprint requirements. Check datasheet revisions for any updates to thermal recommendations or electrical limits before finalizing procurement specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when dual isolated outputs are required from a single controller. The 2.25MHz frequency allows for smaller passive components compared to lower frequency alternatives. Ensure input voltage ranges align with system supply rails and that thermal dissipation capabilities of the DFN package meet board layout constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL7822x series of high-efficiency synchronous buck regulators. It shares architectural similarities with other models in the family but is distinguished by its dual-channel configuration and specific 800mA current rating per phase. The series targets applications demanding high power density and efficiency in small form factors.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include ISL78227ARZ for single-phase boost applications or ISL78268ARZ for single-phase buck needs. Verify pin compatibility and control interface differences when considering cross-series replacements within the Renesas portfolio.