ISL9012IRNFZ-T

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

The ISL9012IRNFZ-T is a dual low-dropout linear regulator (LDO) manufactured by Renesas Electronics Corporation, formerly Intersil. It provides two independent fixed output voltages: VO1 at 3.3V with a maximum current of 150mA, and VO2 at 2.5V with a maximum current of 300mA. The device operates within an input voltage range of 2.3V to 6.5V and features extremely low quiescent current consumption of typically 45µA when both LDOs are active. It incorporates a Power-On-Reset (POR) function for the VO2 output, adjustable via an external capacitor on the CPOR pin. The IC is housed in a compact 10-lead 3x3mm DFN package.

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

• Integrates two high-performance LDO channels with separate enable pins for individual control and shutdown capability.
• Features a programmable Power-On-Reset (POR) delay for the second channel using an external timing capacitor.
• Includes soft-start functionality to limit input current surge during enable and protects against overcurrent and overheating conditions.
• Provides excellent power supply rejection ratio (PSRR) and low output noise suitable for sensitive analog applications.

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

• Portable instruments and handheld devices
• Cell phones and smart phones
• MP3 players and personal digital assistants

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

Verify that the specific ordering suffix IRNFZ-T corresponds to the required 3.3V and 2.5V fixed output configuration. Confirm the tape and reel packaging requirement matches the -T suffix designation. Ensure compatibility with the 10-lead 3x3mm DFN footprint and check for any RoHS compliance documentation if required by your manufacturing standards.

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

Select this component when a dual-output LDO solution is needed with distinct current capabilities for each rail. The 150mA/300mA split supports powering logic cores alongside higher-current peripherals. Consider the integrated POR feature if system sequencing requires a reset signal tied specifically to the second output channel stability.

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

This part belongs to the ISL9012 family of dual LDO regulators designed for low-noise and low-power applications. The series offers various fixed voltage combinations to accommodate different system requirements while maintaining a consistent pinout and package style across the product line.

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

Public confirmed substitute part numbers: MIC2214-JGYML-TR

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

How is the Power-On-Reset (POR) delay time determined?

The POR delay for the VO2 output is externally programmed by connecting a timing capacitor between the CPOR pin and ground. The delay scales proportionally with the capacitance value; for example, a 0.01µF capacitor results in approximately a 200ms entry delay.

What is the recommended output capacitance range for stability?

The device is stable with output capacitance values ranging from 1µF to 10µF, provided the equivalent series resistance (ESR) is up to 200mΩ. A 1µF ceramic capacitor is typically recommended for optimal performance.