ISL9011IRKJZ

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

The ISL9011IRKJZ is a dual low-dropout linear regulator manufactured by Renesas Electronics Corporation, housed in a 10-lead 3mm x 3mm Dual Flat No-Lead (DFN) package. It provides fixed output voltages of 2.85V on Channel 1 and 2.8V on Channel 2. The device supports continuous output currents of 150mA for VO1 and 300mA for VO2, operating within an input voltage range of 2.3V to 6.5V. Quiescent current is typically 45µA with both channels active, dropping below 0.1µA in shutdown mode. It features high power supply rejection ratio (70dB at 1kHz), low output noise (30µV RMS), and ±1.8% regulation accuracy over the -40°C to +85°C temperature range.

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

• Integrates two independent LDOs with separate enable pins for individual channel control and soft-start functionality.
• Provides high power supply rejection and ultra-low output noise through an external reference bypass pin.
• Ensures operational stability with ceramic output capacitors ranging from 1µF to 10µF.
• Includes comprehensive protection mechanisms such as thermal shutdown, current limiting, and undervoltage lockout.

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

• Powering portable instruments and MP3 players
• Supplying logic and analog circuits in PDAs and smart phones
• Providing regulated rails for handheld medical devices

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

Verify the specific ordering suffix against the manufacturer's official documentation to confirm exact output voltage combinations and package variations. Confirm RoHS compliance status and moisture sensitivity level requirements prior to procurement. Ensure that the selected variant matches the required PCB footprint dimensions for the 10-lead DFN package.

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

Select this component when designing systems requiring two distinct, stable voltage rails from a single input source. Consider the device if the application demands minimal standby current consumption and high noise immunity for sensitive analog sections. Evaluate the dropout voltage characteristics relative to the minimum expected input voltage to ensure proper regulation under all load conditions.

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

This component belongs to the ISL9011 series of dual LDO regulators originally developed by Intersil and subsequently acquired by Renesas Electronics. The series is designed for battery-powered applications where efficiency and noise performance are critical. The ISL9011IRKJZ represents a specific configuration within this family, offering fixed outputs optimized for common digital and analog voltage levels.

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

The datasheet explicitly states that the ISL9011 is pin-compatible with the Micrel MIC2211. Verify functional equivalence regarding electrical parameters before substituting.