ISL9000IRKKZ

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

The ISL9000IRKKZ is a dual low-dropout (LDO) voltage regulator manufactured by Intersil, now part of Renesas. It integrates two independent LDO channels, each capable of sourcing up to 300mA of output current. The device operates within an input voltage range of 2.3V to 6.5V and features extremely low quiescent current consumption of 42µA with both LDOs active. It provides excellent load regulation of less than 0.1% and maintains high power supply rejection ratio (PSRR) of 90dB at 1kHz. The output noise is typically 30µVRMS at 100µA for the 1.5V setting. The regulator includes individual enable pins, Power-On-Reset (POR) functions, soft-start capabilities, and thermal/overcurrent protection.

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

• Integrates two independent 300mA LDO channels in a single package
• Features very high PSRR and low output noise for sensitive applications
• Includes individual enable controls and programmable POR delay for VO2
• Provides soft-start and staged turn-on to limit input current surge

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

• PDAs and Smart Phones
• Portable Instruments and MP3 Players
• Handheld Medical Devices

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

Verify the manufacturer source, as Intersil has been acquired by Renesas Electronics. Confirm that the specific suffix 'IRKKZ' corresponds to the correct temperature grade (-40°C to +85°C), RoHS compliance, and DFN-10 package type. Ensure the datasheet revision matches the required electrical specifications for your design.

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

Select this component when a compact dual-output solution is required for portable electronics. It is suitable for applications needing low noise and high PSRR, such as powering RF sections or sensitive analog circuits in mobile devices. Consider the 1µF to 10µF ceramic capacitor stability requirement and the need for external timing capacitors if precise POR delays are necessary.

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

The ISL9000 series belongs to Intersil's portfolio of high-performance power management ICs designed for portable applications. This specific dual LDO variant offers a balance of high current capability and low power consumption. It is part of a family that includes various fixed and adjustable output configurations, all sharing similar protection features and packaging options like the 10-lead DFN.

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

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative dual LDOs from Renesas or other manufacturers based on pinout, current rating, and electrical specifications.