ISL9011IRKFZ-T

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

The ISL9011IRKFZ-T is a dual low-dropout linear regulator manufactured by Renesas Electronics Corporation. It integrates two independent LDO channels within a compact 10-lead, 3mm x 3mm Dual Flat No-Lead (DFN) package. Channel 1 provides a fixed output voltage of 2.85V with a maximum continuous current capability of 150mA. Channel 2 delivers a fixed output voltage of 2.5V with a maximum continuous current capability of 300mA. The device operates from an input supply voltage range of 2.3V to 6.5V and maintains functionality across an ambient 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 channel control.
• Features extremely low quiescent current consumption and high power supply rejection ratio.
• Includes integrated soft-start circuitry to limit input current surge during startup.
• Provides comprehensive protection against overcurrent conditions and thermal overload.

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

• Portable instruments
• MP3 players
• Medical handheld devices

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

Verify the specific ordering suffix to confirm the tape and reel packaging configuration. Confirm that the manufacturer has officially designated this component as obsolete or discontinued before initiating procurement processes. Ensure compatibility with RoHS compliance standards required for the target assembly environment.

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

Select this component when a dual-channel power solution is required in a minimal footprint. Verify that the application requires fixed output voltages of 2.85V and 2.5V. Ensure the load requirements do not exceed the specified 150mA and 300mA limits for each respective channel.

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

This part belongs to the ISL9011 series of dual LDO regulators designed for portable electronics. The series offers various fixed voltage combinations within a tiny DFN package. The IRKFZ-T designation indicates a specific voltage combination packaged in tape and reel format for automated surface-mount assembly.

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

The datasheet explicitly states the device is pin compatible with the Micrel MIC2211. Verify that any substitute component matches the physical dimensions and electrical specifications of the original design.

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

How does the device manage startup sequences when both enable pins are activated?

If both EN1 and EN2 are brought high simultaneously, the VO1 output has priority and powers up first. If one pin is asserted before the other stabilizes, the device delays the second turn-on until the first output reaches its target level.

What is the function of the CBYP pin?

The CBYP pin serves as the reference bypass capacitor pin. Connecting a capacitor between this pin and ground allows tuning of the noise filter to achieve desired noise and PSRR performance.