ISL6442IAZ

Overview

The ISL6442IAZ is a triple-output power management IC featuring two synchronous buck PWM controllers and one linear regulator (LDO). It operates within a 4.5V to 5.5V supply range and supports switching frequencies from 300kHz to 2.55MHz. The device integrates complete control, monitoring, and protection functions for high-performance applications. It utilizes synchronized 180-degree out-of-phase operation to reduce input voltage ripple and total RMS input current. The component is housed in a 24-QSOP package and is rated for an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates dual synchronous buck PWM controllers with synchronized 180-degree out-of-phase operation to minimize input ripple and RMS current.
• Includes a dedicated linear controller alongside the switching regulators for comprehensive triple-output power management.
• Provides integrated control, monitoring, and protection functions within a single compact package.

Applications

• Broadband access systems
• DSL equipment
• Networking infrastructure

Procurement Notes

Verify component authenticity through authorized Renesas channels due to end-of-life status. Confirm RoHS3 compliance and moisture sensitivity level (MSL 2) requirements during storage and handling. Validate pin compatibility and thermal performance against original design specifications before integration into new production runs.

Selection Notes

Select this component when designing systems requiring simultaneous regulation for multiple voltage rails with reduced input current ripple. The fixed 180-degree phase shift limits flexibility compared to programmable alternatives but offers simplified layout for specific broadband and DSL topologies. Ensure the required output currents align with the synchronous buck and LDO capabilities.

Part Context

This part belongs to the Renesas ISL6442 family of triple-output PMICs. It serves as a specialized solution for communication equipment where space efficiency and input noise reduction are critical. The device consolidates multiple discrete regulators into a single integrated circuit to simplify board design and improve system reliability.

Replacement Considerations

ISL6446IAZ is a documented substitute offering similar topology with a frequency range of 100kHz to 2.6MHz. Verify pinout compatibility and thermal characteristics before substitution.