ISL9005IRCZ-T

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

The ISL9005IRCZ-T is a fixed-output Low Dropout linear regulator manufactured by Renesas Electronics Corporation (formerly Intersil). It provides a stable 1.8V output with a maximum continuous current capability of 300mA. The device operates within an input voltage range of 2.3V to 6.5V and features a typical quiescent current of 50µA, dropping to 0.1µA in shutdown mode. It offers high power supply rejection ratio (PSRR) of 75dB at 1kHz and low output noise of 45µVRMS. The component utilizes an 8-lead 2mm x 3mm Dual Flat No-Lead (DFN) package and supports an operating temperature range from -40°C to +85°C.

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

• Integrates soft-start functionality to limit input current surge during enable transitions.
• Includes internal current limit and thermal shutdown protection mechanisms for enhanced reliability.
• Maintains stability when paired with ceramic output capacitors ranging from 1µF to 10µF.

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

• Portable wireless equipment
• Cell phones and smart phones
• Handheld medical devices

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

Verify the specific ordering suffix to confirm the exact output voltage rating, as the base model number covers multiple voltage options. Confirm that the procurement channel accepts the component's End-of-Life status, as it is no longer recommended for new designs. Ensure compliance with RoHS standards and verify moisture sensitivity levels prior to surface mount assembly processes.

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

Select this component when designing portable systems requiring low standby current and high power supply rejection. Verify that the application load does not exceed the 300mA continuous output limit. Ensure the input voltage remains within the specified 2.3V to 6.5V range. Consider the thermal performance characteristics given the compact DFN package dimensions for heat dissipation requirements.

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

This part belongs to the ISL9005 family of high-performance LDOs designed for battery-powered applications. It represents a legacy product line from Intersil, now integrated into the Renesas portfolio. The series is characterized by its ability to drive significant loads while maintaining low noise and high PSRR, making it suitable for sensitive analog circuits in mobile environments.

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

The datasheet explicitly recommends the ISL9005A as the replacement part for new designs.

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

What is the typical dropout voltage at full load?

The typical dropout voltage is 200mV when sourcing 300mA.

How does the device behave when the enable pin is low?

When the EN pin is low, the device enters shutdown mode, drawing a typical current of less than 0.1µA.