ISL6446AIAZ-TK

Overview

The ISL6446AIAZ-TK is a triple output power management controller manufactured by Renesas Electronics Corporation. It integrates two synchronous buck PWM controllers and one linear regulator (LDO). The device operates with an input voltage range of 4.5V to 5.5V and supports switching frequencies from 100kHz to 2.6MHz. It features 180-degree out-of-phase operation for the dual PWM channels to reduce input ripple. The component is housed in a 24-QSOP package and is rated for operating temperatures between -40°C and 85°C.

Feature Summary

• Integrates dual synchronous buck PWM controllers and a single LDO for comprehensive power regulation
• Supports 180-degree out-of-phase operation between the two PWM outputs to minimize input current ripple
• Features programmable switching frequency ranging from 100kHz to 2.6MHz for optimized efficiency and size
• Designed as a single-chip solution for high-frequency power applications in networking equipment

Applications

• Broadband access systems
• DSL infrastructure equipment
• Networking hardware requiring multiple regulated rails

Procurement Notes

Verify component status carefully, as public records indicate this specific part number may be discontinued or end-of-life. Confirm availability through authorized distributors or secondary markets if active procurement is required. Ensure the datasheet version matches the manufacturing date code for accurate electrical specifications and pinout definitions before integration into new designs.

Selection Notes

Select this component when a compact, triple-output solution is needed for broadband or DSL applications. It is suitable for designs requiring synchronized buck conversion with reduced ripple and a dedicated LDO for noise-sensitive circuits. Consider the 24-QSOP package constraints and thermal requirements during PCB layout. Verify that the input voltage range aligns with the system's power supply architecture.

Part Context

The ISL6446A series belongs to Renesas' portfolio of high-performance power management ICs designed for communication infrastructure. This specific model combines switching and linear regulation technologies to provide efficient power distribution. It addresses the need for space-constrained designs in networking gear by integrating multiple regulators into a single package, reducing bill of materials count and board area.

Replacement Considerations

Public documentation lists the ISL6446AIAZ as a related variant. Verify pin compatibility and electrical parameters before substitution. No other direct cross-manufacturer replacements are confirmed in available public data.