ISL9021IRUKZ-T

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

The ISL9021IRUKZ-T is a fixed-output linear low-dropout (LDO) voltage regulator manufactured by Renesas Electronics Corporation. It provides a fixed output voltage of 3V with a maximum continuous output current of 250mA. The device operates within an input voltage range of 1.5V to 5.5V and features a typical dropout voltage of 150mV at full load, with a maximum specified dropout of 250mV. It maintains a voltage regulation accuracy of 0.8% and draws a quiescent current of 50µA. The component is housed in a compact 6-UTDFN package measuring 1.6x1.6mm and supports operation across an extended temperature range from -40°C to +85°C.

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

• Integrates comprehensive protection mechanisms including overcurrent limiting, thermal shutdown, reverse polarity blocking, short-circuit protection, and soft-start functionality.
• Features high power supply rejection ratio (PSRR) and low noise characteristics suitable for sensitive analog and RF circuitry.
• Includes an enable control pin for precise power management and sequencing capabilities.

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

• Portable battery-powered consumer electronics requiring efficient power regulation
• Wireless communication modules and RF front-end circuits
• Microcontroller unit (MCU) core and peripheral power supplies

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

Verify the specific suffix 'IRUKZ' against official Renesas documentation to confirm the exact output voltage and package variant, as minor suffix changes can alter specifications. Confirm end-of-life status and availability through authorized distributors, as this component may be subject to discontinuation or limited stock constraints.

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

Select this regulator when a stable 3V rail is required from a single-cell lithium-ion or similar battery source. Ensure the input voltage remains above the minimum threshold while accounting for dropout voltage under maximum load conditions. Verify that the 250mA current capability meets the peak demand of the downstream load without exceeding thermal limits in the intended enclosure.

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

This component belongs to the ISL9021 series of low-noise, high-PSRR LDO regulators designed for portable applications. The series offers various fixed output voltages and packages, balancing performance with low quiescent current consumption. It serves as a key power management solution for systems prioritizing signal integrity and battery life.

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

Consult official Renesas cross-reference guides for verified substitutes. Potential alternatives include other members of the ISL9021 family with compatible output voltages or newer generations of low-noise LDOs from the same manufacturer, ensuring pin compatibility and electrical parameter alignment.

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

What is the maximum output current capability of the ISL9021IRUKZ-T?

The device supports a maximum continuous output current of 250mA.

Does the ISL9021IRUKZ-T include thermal protection?

Yes, it integrates thermal shutdown protection to prevent damage during overheating conditions.