ISL9103IRUFZ-T

Voltage Regulators - DC DC Switching Regulators Overview

The ISL9103IRUFZ-T is a synchronous buck converter from the Renesas ISL9103 series, designed for high-efficiency power management in portable applications. It features a fixed 2.4 MHz PWM switching frequency and supports an input voltage range of 2.7 V to 6.0 V. The device guarantees a continuous output current of 500 mA with 3% output accuracy over temperature and line conditions. Operating within a junction temperature range of -40°C to +85°C, it utilizes a compact 6-pin uTDFN package measuring 1.6 mm x 1.6 mm x 0.5 mm. This specific part number indicates a fixed output voltage configuration, typically 1.8 V as documented in distributor specifications for this variant.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• High efficiency integrated synchronous buck regulator architecture
• Ultrasonic switching frequency in skip mode to prevent audible noise
• Internal digital soft-start and peak current limiting protection
• Logic-controlled shutdown with less than 1 µA standby current

Voltage Regulators - DC DC Switching Regulators Applications

• WCDMA handsets and mobile communication devices
• PDAs and palmtop computers
• Portable consumer electronics requiring low IQ
• Battery-powered systems needing efficient step-down conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the exact fixed output voltage specification against the manufacturer's datasheet, as suffixes may denote different voltage options. Confirm RoHS compliance status and check for End-of-Life (EOL) notices or Product Change Notifications (PCN), as availability for this specific Intersil-originated part may be limited. Ensure the uTDFN-6 footprint matches your PCB design constraints.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 2.4 MHz switching frequency is required to minimize external passive size while maintaining ultrasonic operation for noise-sensitive audio applications. Choose the ISL9103IRUFZ-T variant specifically if the system requires a fixed output voltage rather than an adjustable one. Consider the 500 mA current limit and 2.7 V minimum input voltage for compatibility with single-cell lithium-ion battery profiles.

Voltage Regulators - DC DC Switching Regulators Part Context

The ISL9103 series represents a family of low-quiescent-current synchronous buck converters originally developed by Intersil and now supported by Renesas Electronics. These devices are optimized for portable applications where battery life and acoustic noise are critical design parameters. The series includes variants with different switching frequencies and output configurations, sharing common protection features like over-temperature and short-circuit protection within a minimal footprint.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers for the ISL9103IRUFZ-T are not available in the provided documentation. Designers should consult official Renesas cross-reference tools or contact authorized distributors for verified equivalents that match the 2.4 MHz frequency, 500 mA current rating, and uTDFN-6 package requirements.