ISL9103IRUDZ-T

Voltage Regulators - DC DC Switching Regulators Overview

The ISL9103IRUDZ-T is a synchronous buck converter manufactured by Renesas Electronics Corporation, formerly Intersil. It integrates high-side and low-side power switches to deliver up to 500mA of output current with efficiencies reaching 95%. The device operates from a 2.7V to 6.0V input supply and utilizes a fixed 2.4MHz PWM switching frequency. It features a compact 6-pin UTDFN package measuring 1.6mm x 1.6mm. Key electrical characteristics include 3% output accuracy over temperature and line conditions, 20µA quiescent current in skip mode, and less than 1µA shutdown current.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• High efficiency integrated synchronous buck regulator design
• Ultrasonic switching frequency in skip mode to eliminate audible noise
• Internal digital soft-start and peak current limiting protection

Voltage Regulators - DC DC Switching Regulators Applications

• PDAs and Palmtops
• WCDMA Handsets

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'RUDZ' against official datasheets to confirm the specific tape-and-reel packaging configuration and temperature range. Ensure compatibility with RoHS compliance standards as indicated for the base component. Cross-reference the manufacturer's latest documentation to validate availability status and any potential obsolescence notices prior to finalizing procurement plans.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for applications requiring small form factors and low electromagnetic interference due to the ultrasonic operation at light loads. The fixed 2.4MHz frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the 500mA current limit when designing for heavy load conditions to ensure thermal management within the small UTDFN package constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL9103 family of low IQ high-efficiency synchronous buck converters. The family is designed for portable electronics where battery life and space are critical constraints. The 'A' variant typically includes specific noise reduction features like the ultrasonic skip mode, distinguishing it from standard versions while maintaining core functionality.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Consult official substitution lists for equivalent synchronous buck converters with similar 500mA output and 2.4MHz frequency specifications. Verify pinout compatibility and thermal performance before replacing.