ISL95874HRUZ-T

Special Purpose Regulators Overview

The ISL95874HRUZ-T is a single-phase synchronous-buck PWM regulator from Renesas, utilizing proprietary R4 Technology. It supports an input voltage range of 3.3V to 25V and provides an output voltage range of 0.5V to 5V. The device features precision regulation with ±0.5% system accuracy over the temperature range of -10°C to +100°C. It offers selectable PWM frequencies of 300kHz, 500kHz, 600kHz, or 1MHz in continuous conduction mode. The component includes automatic diode emulation for high efficiency and a power-good monitor for fault detection.

Special Purpose Regulators Feature Summary

• Integrates proprietary R4 Technology for optimal transient response and frequency control loop stability.
• Provides extremely flexible output voltage programmability through simple resistor programming.
• Features automatic diode emulation mode to maximize efficiency under light load conditions.
• Includes a power-good monitor circuit for soft-start sequencing and fault detection.

Special Purpose Regulators Applications

• Mobile PC graphical processing unit (GPU) VCC rail
• Mobile PC I/O controller hub (ICH) VCC rail
• Mobile PC memory controller hub (GMCH) VCC rail

Special Purpose Regulators Procurement Notes

Verify the specific suffix HRUZ-T against official Renesas documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with the required operating temperature range and input voltage constraints before integration. Cross-reference the part number with current datasheets to confirm availability status and any potential obsolescence notices.

Special Purpose Regulators Selection Notes

Select this component for applications requiring a single-phase buck converter with wide input voltage flexibility. It is suitable for systems powered by batteries or AC adapters where precise voltage regulation is critical. Consider the selectable switching frequencies to optimize filter size and efficiency requirements for the specific design constraints.

Special Purpose Regulators Part Context

This part belongs to the ISL9587x series of single-phase synchronous-buck PWM regulators designed for portable GPU core-voltage regulation. These devices are engineered for mobile computing platforms, offering a balance of performance and simplicity. The series utilizes Intersil's R4 Technology, now integrated into Renesas' portfolio following acquisition.

Special Purpose Regulators Replacement Considerations

Consult official cross-reference lists for direct substitutes. Verify that alternative components match the input/output voltage ranges, switching frequency options, and package dimensions. Ensure functional equivalence regarding the R4 modulator technology and protection features if replacing in existing designs.