ISL6539CAZ

Special Purpose Regulators Overview

The ISL6539CAZ is a dual PWM controller designed for high-performance analog and mixed-signal applications, specifically supporting DDR memory configurations. It integrates two voltage regulating synchronous buck DC/DC converters to deliver high efficiency and tight regulation. The device accepts an input voltage range of 3.3V to 18V and provides adjustable output voltages between 0.9V and 5.5V. Each channel supports up to 8A of output current. The component operates within a commercial temperature range of 0°C to 70°C and is housed in a 28-SSOP or QSOP package with a width of 3.90mm.

Special Purpose Regulators Feature Summary

• Integrates two synchronous buck DC/DC converters for efficient power delivery
• Supports specific DDR memory option requirements
• Provides wide input voltage compatibility for flexible system design

Special Purpose Regulators Applications

• DDR DRAM power supply control
• SDRAM voltage regulation
• Dual-output synchronous buck converter systems

Special Purpose Regulators Procurement Notes

Verify the exact suffix (CA vs CAZ) against the manufacturer's official documentation, as suffixes may indicate packaging or environmental compliance differences. Confirm RoHS status, as some sources indicate non-compliance. Check for obsolescence notices, as the product is listed as End-of-Life by the manufacturer. Ensure the 28-SSOP/QSOP package dimensions match the target PCB footprint before procurement.

Special Purpose Regulators Selection Notes

Select this component when a dual-channel solution with wide input voltage tolerance is required for memory subsystems. The integrated DDR option simplifies design for compatible memory types. Consider the 8A per channel capability for moderate load requirements. Evaluate the commercial temperature range suitability for the intended operating environment. Verify that the synchronous buck topology aligns with the system's efficiency targets.

Special Purpose Regulators Part Context

The ISL6539 series belongs to Renesas Electronics' portfolio of power management ICs, previously under Intersil. It serves as a specialized controller for memory power rails, distinguishing itself from general-purpose PWM controllers through its DDR-specific features. The device represents a legacy solution for older DDR generations, now superseded by newer integrated power stages in modern designs.

Special Purpose Regulators Replacement Considerations

Official substitutes are not explicitly confirmed in the provided data. Consult Renesas application notes for recommended cross-references. Verify pinout compatibility and electrical specifications if considering third-party alternatives.