ISL9103AIRUDZ-T

Voltage Regulators - DC DC Switching Regulators Overview

The ISL9103AIRUDZ-T is a synchronous buck converter manufactured by Renesas Electronics Corporation. It operates with a fixed switching frequency of 2.4 MHz and delivers a guaranteed output current of 500 mA. The device accepts an input voltage range from 2.7 V to 6.0 V. It features a 3% output accuracy over temperature and line conditions. The quiescent supply current is 20 µA in skip mode, with shutdown current less than 1 µA. The component utilizes a 6-pin uTDFN package measuring 1.6 mm x 1.6 mm.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• High efficiency integrated synchronous buck regulator design
• Ultrasonic switching frequency in skip mode to prevent audible noise
• Internal digital soft-start with peak current limiting and short circuit protection
• Discharge output capacitor when disabled for safe system power-down

Voltage Regulators - DC DC Switching Regulators Applications

• PDAs and Palmtops
• WCDMA Handsets

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'AIRUDZ' against official Renesas documentation to confirm pinout compatibility and tape-and-reel specifications. Ensure the ordering part number matches the exact package variant required for the PCB footprint. Confirm RoHS compliance status through the manufacturer's latest environmental declaration before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for applications requiring low audible noise during light-load operation due to its ultrasonic skip mode. The 2.4 MHz frequency allows for smaller external passive components compared to lower-frequency alternatives. Verify that the 500 mA output current capability meets the load requirements and that the 2.7 V minimum input voltage aligns with the system battery or rail characteristics.

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 includes variants with different switching frequencies and output configurations. The ISL9103 series is designed for portable electronics where space constraints and battery life are critical design parameters.

Voltage Regulators - DC DC Switching Regulators FAQ

Does the ISL9103AIRUDZ-T support adjustable output voltage?

No, the datasheet specifies fixed output options with 3% accuracy over temperature and line.

What is the maximum duty cycle capability?

The device supports 100% maximum duty cycle to achieve the lowest dropout voltage.