ISL78228ARZ-T7A

Voltage Regulators - DC DC Switching Regulators Overview

The ISL78228ARZ-T7A is a dual synchronous step-down DC/DC regulator manufactured by Renesas Electronics. It provides two independent output channels, each capable of delivering up to 800mA continuous current. The device operates with a fixed switching frequency of 2.25MHz and supports an adjustable positive output voltage starting from 0.6V. Designed for automotive applications, it functions within a temperature range of -40°C to 105°C. The component utilizes a 10-VFDFN exposed pad package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Dual channel architecture providing independent synchronous step-down regulation
• High efficiency design optimized for low quiescent current operation
• Automotive grade qualification ensuring reliability in harsh environments

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems requiring stable dual power rails
• Digital cockpit displays and instrument clusters
• ADAS sensor interface circuits

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix T7A indicates the tape and reel packaging configuration when ordering. Confirm that the automotive grade designation aligns with your system's environmental requirements. Ensure the 10-VFDFN footprint matches your PCB layout constraints. Cross-reference the manufacturer part number with official Renesas documentation to avoid counterfeit components.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when dual isolated or non-isolated buck outputs are required in a compact form factor. The 2.25MHz frequency allows for smaller external passive components compared to lower frequency alternatives. Consider the 800mA per channel limit against peak load demands. The automotive rating makes it suitable for under-hood or chassis-mounted applications where thermal stability is critical.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL7822x series of automotive-grade power management ICs. It complements single-channel regulators by offering integrated dual-output solutions. The series targets modern vehicle electronics that demand high efficiency and reduced board space. Renesas integrates advanced control loops to maintain stability across varying load conditions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for ISL78228ARZ as a potential lead-free or non-tape variant if packaging differs. Verify compatibility with ISL78227 series if boost topology is acceptable instead of buck. Ensure pinout compatibility before substituting with other dual buck controllers from different manufacturers.