ISL9012IRPLZ

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

The ISL9012IRPLZ is a dual low-dropout linear regulator (LDO) manufactured by Renesas Electronics Corporation, housed in a 10-lead 3x3mm DFN package. It provides two independent positive fixed outputs: Channel 1 delivers up to 150mA and Channel 2 delivers up to 300mA. The device operates with an input voltage range of 2.3V to 6.5V. Key electrical parameters include a typical quiescent current of 45µA when both LDOs are active, a shutdown current below 0.1µA, and a maximum dropout voltage of 200mV at 150mA for VO1. It features high power supply rejection ratio (PSRR) of 70dB at 1kHz and low output noise.

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

• Integrates two high-performance LDOs with separate enable pins for individual control and a combined shutdown mode drawing minimal current.
• Includes a Power-On Reset (POR) function for the VO2 output with externally programmable delay via a timing capacitor on the CPOR pin.
• Features a reference bypass pin (CBYP) allowing connection of external capacitors to optimize noise filtering and PSRR performance.
• Provides comprehensive protection mechanisms including thermal shutdown, current limiting, soft-start functionality, and undervoltage lockout.

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

• Portable instruments and handheld devices
• Cell phones and smart phones
• Medical handheld devices

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

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific manufacturing lot codes if required for quality assurance. Ensure proper ESD handling procedures are followed during storage and installation due to the sensitivity of the CMOS input structure.

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

Select this component for applications requiring dual isolated rails from a single input source within the 2.3V to 6.5V range. Consider the 10-lead 3x3mm DFN package for space-constrained designs. Evaluate the need for the integrated POR feature and adjustable delay for system sequencing requirements. Ensure output capacitance remains between 1µF and 10µF with ESR under 200mΩ for stability.

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

The ISL9012 belongs to the Intersil/Renesas family of dual LDO regulators designed for portable electronics. It shares pin compatibility with certain Micrel MIC2212 variants. The device utilizes a 10-lead Dual Flat No-lead (DFN) package with an exposed thermal pad for efficient heat dissipation. It is part of a broader portfolio of power management solutions targeting mobile and industrial infrastructure markets.

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

The datasheet lists ISL9000AIRNJZ, ISL9000AIRNFZ, ISL9000AIRMGZ-T, ISL9000AIRJBZ-T, and ISL9000AIRJNZ-T as recommended replacements for specific obsolete voltage combinations within the ISL9012 series. Verify exact output voltage configurations before substitution.

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

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

The POR delay time for the VO2 output is externally programmed by connecting a capacitor to the CPOR pin. For a 0.01µF capacitor, the entry delay is typically 200ms.

What is the recommended output capacitance range for stability?

The device is stable with output capacitance ranging from 1µF to 10µF, provided the Equivalent Series Resistance (ESR) is less than 200mΩ.

How does the device handle simultaneous enable signals?

If both EN1 and EN2 are asserted simultaneously, the VO1 output has priority and powers up first. If one is asserted before the other stabilizes, the second output is delayed until the first reaches its target level.