ISL6402AIR

Overview

The ISL6402AIR is a dual switching and single linear controller manufactured by Intersil. It integrates two out-of-phase, 1.4MHz synchronous buck PWM controllers and one low-dropout (LDO) regulator controller within a single package. The device supports a wide input supply voltage range of 4.5V to 24V. It features three independently programmable output voltages, allowing for flexible power rail generation in complex systems.

Feature Summary

• Integrates dual synchronous buck PWM controllers with 180-degree phase shifting to reduce input ripple current.
• Includes a single linear controller for noise-sensitive applications requiring clean power rails.
• Supports wide input voltage ranges suitable for various industrial and computing power architectures.

Applications

• Industrial control systems requiring multiple regulated voltage rails
• Computing platforms needing synchronized power delivery
• Telecommunications equipment with mixed switching and linear regulation needs

Procurement Notes

Verify the specific suffix (e.g., -TK) against the datasheet to confirm packaging and tape-and-reel specifications. Confirm end-of-life status as this component may be obsolete. Ensure compatibility with existing PCB footprints and thermal management designs before procurement.

Selection Notes

Select this component when space-constrained designs require combined switching and linear regulation capabilities. The integrated phase-shifting feature makes it suitable for applications where minimizing input capacitor size and reducing electromagnetic interference are critical design constraints.

Part Context

This part belongs to the Intersil PMIC family, designed for high-efficiency power management. It combines the flexibility of adjustable switching regulators with the simplicity of LDOs, targeting applications that demand compact solutions without sacrificing performance or regulatory compliance.

Replacement Considerations

Check for direct pin-compatible alternatives from Renesas or other manufacturers offering similar dual-buck plus LDO configurations. Verify if newer generations offer improved efficiency or extended temperature ranges while maintaining functional equivalence.

FAQ

What is the switching frequency of the ISL6402AIR?

The switching controllers operate at a fixed frequency of 1.4MHz.

How many outputs does the ISL6402AIR provide?

It provides three independent outputs: two from the synchronous buck controllers and one from the linear controller.