ISL6402IRZ-T

Overview

The ISL6402IRZ-T is a triple-output voltage regulator controller from Renesas Electronics, integrating two synchronous step-down (buck) converters and one linear low-dropout (LDO) regulator. Designed for surface-mount applications in a 28-QFN (5x5 mm) package, it operates within an input voltage range of 4.5V to 24V. The switching frequency for the buck regulators is fixed at 300kHz. This component serves as a power management solution combining linear and switching technologies to deliver multiple regulated outputs efficiently.

Feature Summary

• Integrates dual synchronous buck converters with a single LDO output
• Supports wide input voltage range suitable for various supply rails
• Utilizes compact surface-mount packaging for space-constrained designs

Applications

• Portable electronic devices requiring multi-rail power distribution
• Industrial control systems needing mixed linear and switching regulation
• Communication equipment utilizing standard logic voltage levels

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing. Confirm the manufacturer designation as Renesas Electronics America Inc, noting the historical Intersil lineage. Ensure compatibility with the 28-QFN footprint during PCB layout. Check current availability status as legacy components may have limited stock or end-of-life implications.

Selection Notes

Select this component when a design requires two independent synchronous buck channels alongside a dedicated LDO for noise-sensitive circuits. It is appropriate for systems operating between 4.5V and 24V input. Consider the 300kHz fixed frequency for EMI planning. Evaluate thermal performance given the QFN package constraints under load conditions.

Part Context

This part belongs to the ISL6402 family of power management ICs. It represents a hybrid solution merging switching efficiency with LDO simplicity. The device is manufactured by Renesas Electronics, continuing the product line originally developed by Intersil. It targets applications needing compact, multi-output power solutions without complex external controller configurations.

Replacement Considerations

Direct substitutes are not explicitly confirmed in public documentation. Review datasheets for other Renesas triple-output controllers or separate buck/LDO combinations if pin compatibility is required. Verify electrical parameters match before substitution.