ISL6521IBZ-T

Overview

The ISL6521IBZ-T is a quad power controller integrating one synchronous buck converter and three linear regulators. It operates at a switching frequency of 300kHz with a supply voltage range of 4.5V to 5.5V. The device provides two adjustable outputs rated at 120mA each, functioning as controllers within a 16-SOIC package. It supports an operating temperature range from -40°C to 85°C.

Feature Summary

• Integrates one synchronous buck converter alongside three linear regulator channels for combined DC-DC and LDO control.
• Features a fixed 300kHz switching frequency for the buck section to optimize passive component size.
• Provides dual adjustable output channels capable of delivering up to 120mA each.

Applications

• Multi-rail power distribution in portable computing devices
• System power management for embedded industrial controllers
• Voltage regulation for mixed-signal circuit boards requiring stable auxiliary rails

Procurement Notes

Verify current availability status as this component may be subject to end-of-life notices or limited production runs. Confirm that the specific suffix indicates tape-and-reel packaging rather than tube. Ensure compatibility with existing board layouts before ordering due to potential supply chain constraints.

Selection Notes

Select this part when a single IC solution is required to manage both high-current switching loads and low-noise linear supplies. The integrated topology reduces bill-of-materials count compared to discrete solutions. Verify that the 300kHz frequency aligns with electromagnetic interference requirements and thermal design limits.

Part Context

This component belongs to the ISL6521 series of power management integrated circuits designed by Renesas Electronics. It serves as a consolidated solution for applications needing multiple voltage rails derived from a single input source, simplifying the power architecture for compact electronic systems.

Replacement Considerations

Check for direct pin-compatible alternatives within the Renesas portfolio if this specific revision is unavailable. Evaluate successor models that may offer updated efficiency characteristics or extended temperature ranges while maintaining the same functional interface.