ISL6529CR-T

Overview

The ISL6529CR-T is a dual power controller integrating one synchronous rectified buck PWM controller and one linear regulator. Designed for high-performance graphics cards, it drives two N-Channel MOSFETs in a buck topology and one in a linear configuration. The device operates at a constant frequency of 600kHz with a 12V direct drive capability. It supports output voltage ranges down to 0.8V for both PWM and linear outputs. The component provides excellent regulation accuracy of ±2% over temperature and includes undervoltage fault monitoring on both outputs.

Feature Summary

• Integrates a synchronous rectified buck PWM controller and an independent linear controller within a single package
• Drives low-cost N-Channel MOSFETs using a 12V direct drive architecture to minimize external components
• Delivers precise output voltage regulation with ±2% tolerance over the operating temperature range

Applications

• Graphics processing unit (GPU) core voltage regulation
• On-board memory supply regulation for embedded processors
• Dual-output power management systems requiring combined switching and linear regulation

Procurement Notes

Verify component authenticity through authorized channels due to discontinuation status. Confirm datasheet revision compatibility with existing design specifications. Validate thermal performance under load conditions as the SOIC package may require specific PCB layout considerations for heat dissipation. Ensure replacement strategies account for potential obsolescence impacts on long-term production cycles.

Selection Notes

Select this component when simultaneous regulation of high-current GPU cores and lower-current memory rails is required. The integrated linear stage simplifies designs where noise-sensitive loads coexist with switching converters. Evaluate the 600kHz switching frequency against EMI constraints and inductor size requirements. Consider the 12V drive voltage compatibility with available N-Channel MOSFET gate thresholds for optimal efficiency.

Part Context

This part belongs to the Intersil ISL6529 series of dual regulators designed specifically for graphics applications. It consolidates power control functions typically handled by separate discrete controllers into a compact 14-lead SOIC package. The series addresses the need for efficient, space-constrained power solutions in modern computing hardware.

Replacement Considerations

Public confirmed substitute part numbers are not available. As the product is discontinued, engineers must evaluate alternative dual-regulator ICs or redesign using separate PWM and linear controllers to maintain system functionality.