ISL8009AIRZ-T

Voltage Regulators - DC DC Switching Regulators Overview

The ISL8009AIRZ-T is a synchronous step-down switching regulator manufactured by Intersil. It delivers a maximum output current of 1.5A with an adjustable output voltage range from 0.8V to 5.5V. The device operates at a fixed switching frequency of 1.6MHz and features low quiescent current for improved efficiency under light loads. Input voltage ranges from 2.7V to 5.5V. It is housed in an 8-lead DFN package with an exposed pad (DFN8EP) measuring 3mm x 3mm.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous buck topology for high-efficiency power conversion
• Fixed 1.6MHz switching frequency enables compact external component sizing
• Low quiescent current operation optimizes battery life in portable applications

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronics requiring efficient voltage regulation
• Battery-powered devices needing extended operational time
• Embedded systems utilizing single-cell lithium-ion or lithium-polymer batteries

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when ordering. Confirm that the 'AIRZ' designation corresponds to the industrial temperature grade and lead-free RoHS compliance as specified in the official datasheet. Ensure compatibility with your PCB footprint for the DFN8EP package before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for input voltages up to 5.5V and output currents around 1.5A. The fixed 1.6MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Consider thermal performance due to the small package size and ensure adequate copper area on the PCB for heat dissipation through the exposed pad.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the Intersil ISL8009 family of synchronous buck regulators. It is designed for applications where space constraints and efficiency are critical. The manufacturer, now part of Renesas Electronics, continues to support this line within its broader portfolio of power management integrated circuits for consumer and industrial markets.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct pin-to-pin replacements within the same product family or newer generations from Renesas. Verify that any substitute maintains the 1.5A current rating, 1.6MHz frequency, and compatible control loop characteristics to avoid redesigning the feedback network.