ISL9011IRJRZ-T

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

The ISL9011IRJRZ-T is a dual low-dropout linear regulator manufactured by Renesas Electronics Corporation. It provides two independent fixed output voltages: Channel 1 outputs 2.8V with a maximum current of 150mA, and Channel 2 outputs 2.6V with a maximum current of 300mA. The device operates within an input voltage range of 2.3V to 6.5V and features a typical quiescent current of 45µA when both channels are active. It utilizes a 10-lead 3mm x 3mm Dual Flat No-Lead (DFN) package.

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

• 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 the specific ordering suffix to confirm the tape and reel packaging configuration. Confirm that the manufacturer has officially designated this part number as discontinued or obsolete before initiating procurement processes. Ensure compatibility with RoHS compliance standards and verify the moisture sensitivity level requirements for surface mount assembly procedures.

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

Select this component when a compact dual-output solution is required for portable electronics. Verify that the application requires the specific 2.8V and 2.6V fixed output combination. Ensure the load currents do not exceed 150mA for the first channel and 300mA for the second channel. Confirm that the system input voltage remains within the specified operational range.

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

This component belongs to the ISL9011 series of dual low-dropout regulators designed for space-constrained applications. It is manufactured by Renesas Electronics Corporation, formerly Intersil. The device is housed in a tiny 10-lead 3mm x 3mm DFN package, making it suitable for dense printed circuit board layouts in modern mobile and handheld electronic devices.

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

The datasheet explicitly states the device is pin compatible with the Micrel MIC2211. Users should verify if alternative Renesas models within the same family offer updated availability or revised specifications while maintaining functional equivalence.

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

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

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 allows connection of an external capacitor to tune noise and PSRR performance. A 0.01µF capacitor implements a 100Hz lowpass filter, while larger values like 0.1µF reduce reference noise below the 10Hz to 1kHz band.