ISL9011IRKCZ

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

The ISL9011IRKCZ is a dual low-dropout linear regulator manufactured by Renesas Electronics Corporation. It provides two independent fixed output voltages: VO1 at 2.85V and VO2 at 1.8V. The device operates within an input voltage range of 2.3V to 6.5V and supports continuous output currents of 150mA for Channel 1 and 300mA for Channel 2. Quiescent current is typically 45µA with both channels active, dropping below 0.1µA in shutdown mode. It features ±1.8% regulation accuracy, high power supply rejection ratio (70dB at 1kHz), and low output noise (typically 30µV RMS). The component is housed in a 10-lead 3mm x 3mm Dual Flat No-Lead (DFN) package.

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

• Integrates two independent LDOs with separate enable pins for individual channel control
• Features soft-start circuitry to limit input current surge during startup
• Includes overheat detection and internal current limit protection
• Stable with ceramic output capacitors ranging from 1µF to 10µF

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

• PDAs, Cell Phones and Smart Phones
• Portable Instruments and MP3 Players
• Handheld Devices including Medical Handhelds

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

Verify the specific ordering suffix 'CZ' indicates the tube packaging format as documented in the manufacturer's ordering information. Confirm that the pin marking code 'DAEA' matches the physical component received. Ensure the datasheet revision aligns with the manufacturing date code, as Intersil/Renesas may update specifications without notice. Validate RoHS compliance status through official documentation before integration.

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

Select this component when dual isolated rails are required from a single input source. The 2.85V/1.8V combination suits systems needing distinct logic and analog supplies. Verify that the load requirements do not exceed 150mA on Channel 1 or 300mA on Channel 2. Consider the DFN package thermal characteristics if operating near maximum ambient temperatures or under heavy load conditions.

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

The ISL9011 series consists of high-performance dual LDO regulators designed for portable electronics. This specific part number represents a fixed-voltage variant within the broader family. The device was originally introduced by Intersil Corporation, which was subsequently acquired by Renesas Electronics. It shares pin compatibility with other similar dual LDO architectures while offering optimized quiescent current performance.

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

The datasheet explicitly states the device is pin compatible with the Micrel MIC2211. Verify that the replacement part offers equivalent output voltage configurations and current capabilities. Check for differences in thermal resistance and package dimensions to ensure mechanical fit.