ISL9000AIRFCZ-T

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

The ISL9000AIRFCZ-T is a dual low-dropout linear regulator from the Renesas ISL9000A series, housed in a 10-lead DFN (3x3 mm) package. It provides two fixed positive output voltages of 1.8V and 2.5V, each capable of sourcing up to 300mA. The device operates with an input voltage range of 2.3V to 6.5V and maintains a typical dropout voltage of 200mV at full load. It features extremely low quiescent current of 42µA, high power supply rejection ratio of 90dB at 1kHz, and low output noise of typically 30µV RMS. The IC includes integrated Power-On Reset and enable control, ensuring stable operation with ceramic capacitors between 1µF and 10µF.

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

• Integrates two independent 300mA LDOs with excellent transient response for large current steps
• Provides very high PSRR of 90dB at 1kHz and low output noise for sensitive analog circuits
• Features extremely low quiescent current consumption of 42µA when both LDOs are active
• Includes individual enable pins and a Power-On Reset function for system management

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

• Portable battery-powered devices requiring efficient dual-rail power distribution
• RF modules and wireless communication systems needing low-noise power supplies
• Embedded microcontroller units requiring stable 1.8V and 2.5V logic levels
• Industrial sensor interfaces demanding high PSRR to reject supply line noise

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

Verify component authenticity through authorized distributors as the ISL9000A series may have limited availability due to end-of-life status. Confirm the specific suffix 'T' indicates tape-and-reel packaging if required for automated assembly. Check RoHS compliance documentation for environmental regulations. Ensure design-in compatibility with existing PCB footprints for the 10-DFN package. Validate that the fixed 1.8V/2.5V outputs meet the target application requirements before procurement.

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

Select this component when dual isolated rails are needed from a single input source without external resistors. The fixed 1.8V and 2.5V outputs eliminate the need for external feedback networks, simplifying board layout. Consider the 300mA per channel limit against peak load demands. The low dropout characteristic allows operation close to the minimum input voltage, maximizing battery life. Verify thermal performance in the 3x3mm DFN package under maximum load conditions.

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

The ISL9000AIRFCZ-T belongs to the ISL9000A family of dual LDOs designed for space-constrained applications. It replaces older discrete solutions by integrating two regulators into a compact footprint. The device is part of Renesas's portfolio following the acquisition of Intersil, maintaining legacy performance specifications. It serves as a power management solution for systems requiring clean, stable voltage rails from lithium-ion or similar battery sources.

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

Check for direct pin-compatible alternatives within the ISL9000A series with different output voltage combinations. Verify if newer Renesas LDOs offer improved efficiency or lower noise while maintaining the same package outline. Ensure any substitute supports the required 300mA output current and 6.5V maximum input voltage. Confirm that the replacement includes similar protection features like over-current and thermal shutdown.