ISL9011IRFDZ-T

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

The ISL9011IRFDZ-T 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 two independent regulated outputs: Channel 1 delivers a fixed 2.5V at up to 150mA, while Channel 2 supplies a fixed 2.0V at up to 300mA. The device operates within an input voltage range of 2.3V to 6.5V and maintains a typical quiescent current of 45µA when both channels are active. It features high power supply rejection ratio performance, typically 70dB at 1kHz, and includes integrated protection mechanisms such as thermal shutdown and current limiting.

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

• Integrates two independent LDOs with separate enable pins for individual channel control
• Features extremely low quiescent current consumption and high power supply rejection ratio
• Includes soft-start functionality to limit input current surge during startup
• Provides comprehensive protection against overcurrent conditions and overheating

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

• Portable instruments and MP3 players
• Smart phones and handheld devices
• Medical handheld equipment

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

Verify the specific output voltage configuration matches the design requirements, as the IRFDZ suffix denotes a 2.5V/2.0V combination. Confirm the tape and reel packaging format aligns with automated assembly processes. Ensure the component meets RoHS compliance standards for lead-free manufacturing. Check for any recent product change notices regarding pin compatibility or material updates before finalizing procurement plans.

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

Select this component when a compact dual-rail power solution is required for noise-sensitive portable electronics. The device is suitable for applications needing distinct voltage rails with different current capabilities. Verify that the external capacitor values fall within the recommended stability range of 1µF to 10µF. Consider the thermal performance characteristics if the ambient temperature approaches the upper operational limits.

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

This part belongs to the ISL9011 series of dual LDO regulators designed for low-noise and low-power applications. The series is characterized by its ability to operate with small ceramic capacitors and its high PSRR performance. The manufacturer offers various voltage combinations within this family to accommodate diverse system requirements while maintaining a consistent footprint and pinout.

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

The datasheet explicitly states the device is pin compatible with the Micrel MIC2211. Engineers may consider this alternative if sourcing the original part is difficult, provided the electrical specifications meet the application needs.