ISL9012IRKKZ

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

The ISL9012IRKKZ 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 up to 300mA. The device operates with an input voltage range of 2.3V to 6.5V. Quiescent current is typically 45µA when both LDOs are active, dropping below 0.1µA in shutdown mode. Key electrical specifications include a typical dropout voltage of 120mV at 150mA for VO1, power supply rejection ratio (PSRR) of 70dB at 1kHz, and output noise of 30µVrms. The unit features ±1.8% accuracy over the operating temperature range of -40°C to +85°C.

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

• Integrates two high-performance LDOs with separate enable pins for individual control and soft-start functionality to limit input current surges.
• Includes a programmable Power-On Reset (POR) function for the VO2 output, allowing delay adjustment via an external capacitor on the CPOR pin.
• Features a reference bypass pin (CBYP) that supports noise-filtering capacitors to achieve low noise and high PSRR performance.
• Provides comprehensive protection mechanisms including current limiting, thermal shutdown, and undervoltage lockout (UVLO).

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

• PDAs, Cell Phones and Smart Phones
• Portable Instruments and MP3 Players
• Handheld Devices including Medical Handhelds

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 dates if required for legacy system maintenance. 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 independent voltage rails from a single source within a compact footprint. Verify that the required output voltages match available factory-trimmed options ranging from 1.5V to 3.3V. Ensure output capacitance remains between 1µF and 10µF with ESR under 200mΩ to maintain stability. Consider the 10-DFN package dimensions for PCB layout constraints.

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

This device belongs to the ISL9012 family of dual LDO regulators designed for portable electronics. It succeeds earlier Intersil designs and maintains pin compatibility with certain Micrel parts. The product line emphasizes low standby current and high PSRR for battery-powered systems. Manufacturing has transitioned from Intersil to Renesas Electronics Corporation following corporate acquisitions.

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

Datasheet notes indicate pin compatibility with Micrel MIC2212. Specific ordering suffixes may denote different output voltage combinations or packaging variations. Verify exact voltage outputs and package markings against the original design requirements before substitution.