ISL6522IRZ-T

DC DC Switching Controllers Overview

The ISL6522IRZ-T is a synchronous rectifier PWM controller designed for high-performance microprocessor power supplies. It operates within a supply voltage range of 10.8V to 13.2V and supports switching frequencies from 50kHz to 1MHz, with a standard free-running oscillator at 200kHz. The device regulates output voltages as low as 0.8V with ±1% tolerance. It features a 15MHz gain-bandwidth error amplifier and provides up to 500mA output current in a 14-lead TSSOP package.

DC DC Switching Controllers Feature Summary

• Integrates complete control and protection functions for synchronous buck topologies
• Utilizes upper MOSFET rDS(ON) for current sensing without external resistors
• Provides fast transient response via high-bandwidth voltage-mode control
• Includes soft-start, frequency control, and overcurrent protection

DC DC Switching Controllers Applications

• Power supply for Pentium, Pentium Pro, PowerPC, and AlphaPC microprocessors
• High-power 5V to 3xV DC-DC regulators
• Low-voltage distributed power supplies

DC DC Switching Controllers Procurement Notes

Verify the specific suffix against official Renesas documentation to confirm pinout compatibility and thermal characteristics. Confirm RoHS compliance status and moisture sensitivity level prior to assembly. Check for active obsolescence notices or product change notifications that may affect long-term availability or manufacturing site changes.

DC DC Switching Controllers Selection Notes

Select this component for single-phase synchronous buck applications requiring precise voltage regulation for legacy processor cores. Ensure the design accommodates the 14-lead TSSOP footprint and validates thermal performance under maximum load conditions. Verify that the required switching frequency falls within the adjustable oscillator range for optimal efficiency.

DC DC Switching Controllers Part Context

This part belongs to the ISL6522 series of synchronous rectifier controllers developed by Renesas Electronics Corporation (formerly Intersil). The series targets high-current, low-voltage power delivery systems. Variants exist in different packages such as QFN and SOIC, offering flexibility for various board space constraints while maintaining identical core control logic.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.