ISL6534CV

Overview

The ISL6534CV is a dual synchronous buck pulse-width modulator (PWM) controller designed for DDR memory VDDQ and VTT termination. It integrates two independent controllers with internal compensation, supporting input voltages from 3.0V to 12V. The device features adjustable output voltage ranges of 0.8V to 1.9V for VDDQ and 0.8V to 1.5V for VTT. It operates at switching frequencies up to 750kHz and includes comprehensive protection mechanisms such as over-current, over-voltage, under-voltage lockout, and thermal shutdown.

Feature Summary

• Dual integrated synchronous buck PWM controllers optimized for DDR memory power applications
• Internal frequency compensation eliminates external error amplifier components
• Integrated high-side and low-side gate drivers for direct MOSFET control
• Comprehensive protection suite including over-current, over-voltage, and thermal shutdown

Applications

• DDR SDRAM memory power supplies
• VTT termination regulation
• VDDQ regulator circuits
• High-performance computing systems

Procurement Notes

Verify the specific suffix 'CV' against official Intersil or Renesas documentation to confirm temperature range and package variant. Ensure compatibility with required PCB footprint and thermal management specifications. Confirm RoHS compliance status if required by manufacturing standards. Validate that the component meets the electrical requirements of the target DDR memory generation.

Selection Notes

Select this component when designing power stages for DDR memory interfaces requiring precise voltage regulation. Consider the internal compensation benefits for simplified layout. Evaluate the maximum switching frequency against EMI constraints. Ensure the selected package variant supports the thermal dissipation needs of the application environment.

Part Context

The ISL6534 belongs to the family of multi-phase PWM controllers developed by Intersil, now part of Renesas Electronics. These devices are widely used in server and workstation platforms to provide stable power rails for high-speed memory modules. The dual-channel architecture allows efficient generation of both core and termination voltages simultaneously.

Replacement Considerations

Check for updated Renesas part numbers replacing the Intersil branding. Verify pin-to-pin compatibility with alternative dual buck controllers from other manufacturers. Ensure equivalent switching frequency and protection thresholds are met.