ISL9021AIRUKZ-T7A

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

The ISL9021AIRUKZ-T7A is a fixed-output low-dropout linear regulator manufactured by Renesas Electronics. It provides a stable 2.85 V output with a maximum continuous current of 1 A. The device operates from an input voltage range of 1.5 V to 5.5 V and maintains regulation with a typical dropout voltage of 150 mV at full load. It features a low quiescent current of 35 µA and high power supply rejection ratio characteristics. The component is housed in a compact 6-pin UTDFN package and supports operation within an ambient temperature range of -40°C to +85°C.

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

• Provides high power supply rejection ratio for noise-sensitive applications
• Features ultra-low quiescent current for extended battery life
• Includes comprehensive protection against overcurrent, thermal overload, reverse polarity, and short circuits

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

• Portable consumer electronics requiring efficient power management
• Battery-powered sensor nodes and IoT devices
• Microcontroller unit (MCU) core voltage regulation

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

Verify the specific suffix 'T7A' to confirm tape-and-reel packaging configuration. Confirm that the 1 A output variant matches system requirements, as other versions in this series offer lower current ratings. Check RoHS compliance status and ensure the UTDFN-6 footprint aligns with PCB layout constraints before finalizing procurement.

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

Select this component when a fixed 2.85 V rail is required with high current capability up to 1 A. Ensure the input voltage remains above the minimum threshold while accounting for dropout voltage under peak load conditions. Consider the thermal performance in the UTDFN-6 package if operating near maximum current limits or elevated temperatures.

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

This part belongs to the ISL9021A series of single LDO regulators designed for low-noise and low-IQ performance. The series includes variants with different output voltages and current capabilities, all sharing similar protection features and package options. It serves as a power management solution for portable systems where efficiency and noise suppression are critical.

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

Direct substitutes include other ISL9021A series parts with identical 1 A output and 2.85 V fixed output, such as ISL9021AIRUKZ-T. Verify pin compatibility and thermal characteristics when replacing.