ISL9021IRUSZ-T

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

The ISL9021IRUSZ-T is a single-channel linear low-dropout (LDO) regulator manufactured by Renesas Electronics Corporation. It provides a fixed positive output voltage of 1.6V with a guaranteed continuous load current capability of 250mA. The device operates with an input voltage range up to 5.5V and features ultra-low quiescent current of 50µA. Key electrical parameters include a dropout voltage of approximately 0.25V at full load and high power supply rejection ratio (PSRR). The component is housed in a compact 6-UTDFN package measuring 1.6x1.6mm, suitable for surface-mount applications.

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

• Delivers high-performance regulation with guaranteed 250mA continuous output current capability
• Features ultra-low ground current consumption for enhanced power efficiency
• Provides high power supply rejection ratio (PSRR) across frequency ranges
• Includes comprehensive protection mechanisms such as overcurrent, thermal shutdown, reverse polarity, and soft-start

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

• Portable battery-powered electronic devices requiring efficient voltage regulation
• Embedded systems utilizing low-voltage logic circuits
• RF modules and communication interfaces needing stable low-noise power supplies
• Industrial control systems operating within specified temperature ranges

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

Verify the specific output voltage variant required, as the ISL9021 series includes multiple fixed voltage options. Confirm package compatibility with the 6-UTDFN footprint. Check current stock status as availability may vary. Ensure compliance with RoHS directives if applicable to your manufacturing process. Review the latest datasheet for any updates on recommended external capacitor values to ensure stability.

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

Select this component when a fixed 1.6V output is needed with moderate current demands. Consider the input voltage range limits relative to your source supply. Evaluate the thermal performance given the small package size under full load conditions. Compare PSRR requirements against other LDOs if noise sensitivity is critical. Verify that the 250mA limit meets peak load transient requirements without exceeding safe operating area.

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

The ISL9021 series represents Renesas's line of high-performance LDO regulators designed for low-voltage applications. These devices are engineered to provide stable outputs with minimal quiescent current draw, making them ideal for portable electronics. The series offers various fixed output voltages to accommodate different logic families and system requirements while maintaining consistent performance characteristics across the product family.

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

Direct substitutes include other ISL9021 variants with different fixed output voltages, such as ISL9021AIRUCZ-T (1.8V) or ISL9021AIRUNZ-T (3.3V), provided the voltage requirement matches. Cross-referencing with similar 250mA LDOs from other manufacturers requires verifying pinout compatibility and electrical parameter equivalence.