ISL9021IRU3Z-TR5476

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The ISL9021IRU3Z-TR5476 is a fixed-output low-dropout (LDO) linear voltage regulator manufactured by Renesas Electronics Corporation. It provides a fixed output voltage of 1.3 V with a maximum continuous output current of 3 A. The device operates within an input voltage range of 1.5 V to 5.5 V and features a typical dropout voltage of 150 mV at full load, with a maximum specified dropout of 250 mV. It utilizes a 6-pin UTDFN package (1.6 x 1.6 mm). The regulator maintains a voltage accuracy of 0.8% and supports surface-mount installation. The operational temperature range extends from -40°C to +85°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• High-current capability delivering up to 3 A output for demanding power rails
• Ultra-low noise architecture designed for sensitive analog and RF circuitry
• Integrated protection mechanisms including overcurrent, thermal shutdown, reverse polarity, and soft-start functionality

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Portable electronic devices requiring stable power delivery
• Wireless communication modules needing low-noise regulation
• Embedded systems utilizing high-current digital logic cores

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm package integrity and pin alignment upon receipt. Check datasheet revisions for any parameter updates. Ensure storage conditions meet moisture sensitivity level requirements before reflow soldering.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 1.3 V rail requires high current capacity in a compact footprint. Evaluate input voltage headroom against the 150 mV typical dropout to ensure regulation stability under varying load conditions. Consider the UTDFN package dimensions for PCB layout constraints.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the ISL9021 series of low-dropout regulators from Renesas. The series offers various fixed output voltages and current ratings. The IRU3Z suffix indicates the specific 1.3 V output variant with a 3 A rating, distinguishing it from lower current versions like the 250 mA models in the same family.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the discontinued status, direct replacements may require design modification or alternative sourcing strategies.