ISL9011IRMNZ-T

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

The ISL9011IRMNZ-T is a dual low-dropout (LDO) linear regulator manufactured by Renesas Electronics Corporation, housed in a 10-lead 3mm x 3mm Dual Flat No-Lead (DFN) package. It provides two independent regulated outputs: Channel 1 delivers up to 150mA at 3.0V, and Channel 2 delivers up to 300mA at 3.3V. The device operates with an input voltage range of 2.3V to 6.5V and maintains a typical quiescent current of 45µA when both channels are active. It features high power supply rejection ratio (PSRR) of 70dB at 1kHz and low output noise of 30µVRMS. The component includes separate enable pins for each LDO, soft-start functionality, and protection against overcurrent and thermal overload.

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

• Integrates two independent LDOs with distinct current capabilities of 150mA and 300mA.

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

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

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

Verify the specific ordering suffix '-T' indicates tape and reel packaging configuration as defined in manufacturer technical briefs. Confirm that the 'IRMN' designation corresponds to the exact 3.0V and 3.3V fixed output combination required for your design. Ensure compatibility with RoHS compliance standards and lead-free reflow profiles specified in the datasheet before finalizing procurement orders.

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

Select this component when a compact dual-output solution is required for portable electronics. It is suitable for applications demanding low standby current and high PSRR. Verify that the load requirements do not exceed 150mA on the first channel or 300mA on the second channel. Ensure the application utilizes ceramic capacitors within the 1µF to 10µF range to maintain stability.

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

This part belongs to the ISL9011 family of dual LDO regulators designed for low noise and low IQ performance. Originally developed by Intersil, the product line was integrated into Renesas Electronics Corporation's portfolio following corporate acquisitions. The series is characterized by its tiny DFN footprint and pin compatibility with other industry-standard dual LDOs.

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

The datasheet explicitly states the device is pin compatible with the Micrel MIC2211. Verify electrical specifications match before substitution.

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

How does the ISL9011 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 device delays the second turn-on until the first 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.