ISL9103IRUAZ-T

Voltage Regulators - DC DC Switching Regulators Overview

The ISL9103IRUAZ-T is a synchronous buck converter manufactured by Renesas Electronics Corporation. It operates with an input voltage range of 2.7V to 6.0V and delivers a guaranteed output current of 500mA. The device utilizes a fixed PWM switching frequency of 2.4MHz. It features 3% output accuracy over temperature and line conditions, with a quiescent supply current of 20µA in skip mode and less than 1µA in logic-controlled shutdown. The component is housed in a small 6-pin 1.6mm x 1.6mm uTDFN package.

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 'IRUAZ' against official Renesas documentation to confirm pinout compatibility and thermal characteristics. Confirm RoHS compliance status via the manufacturer's latest environmental declaration. Check for End-of-Life (EOL) notices or Last Time Buy dates, as older Intersil/Renesas PMICs may have limited availability or require alternative sourcing strategies for production continuity.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for applications requiring low quiescent current and high efficiency in portable devices. Ensure the required output voltage matches the fixed options available, as adjustable versions may differ. Verify that the 2.4MHz switching frequency aligns with EMI requirements and external component selection constraints. Confirm that the 500mA output current capability meets the maximum load demand of the target application.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ISL9103 family of low IQ high efficiency synchronous buck converters. It is designed for battery-powered mobile applications where space and power efficiency are critical. The series includes variants like the ISL9103A, which offers ultrasonic operation to eliminate audible noise, a feature not explicitly confirmed for the standard ISL9103 variant in all datasheets.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

ISL9103AIRUAZ-T: Offers ultrasonic switching frequency to prevent audible noise, unlike the standard ISL9103. ISL9104AIRUAZ-T: Features a higher 4.3MHz switching frequency for potentially smaller passive components.