ISL9011IRBLZ

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

The ISL9011IRBLZ 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 1.5V with a maximum continuous current capability of 150mA. Channel 2 delivers a fixed output voltage of 2.9V 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 stable regulation 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 soft-start circuitry to limit input current surges during activation.
• Includes comprehensive protection mechanisms such as thermal shutdown, overheat detection, and internal current limiting.
• Offers excellent load regulation and high power supply ripple rejection for noise-sensitive applications.

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

• Powering portable instruments and MP3 players
• Supplying logic and analog circuits in PDAs and smart phones
• Providing regulated rails for handheld medical devices

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

Verify the specific ordering suffix against manufacturer documentation to confirm exact output voltages and package variations. Confirm RoHS compliance status and moisture sensitivity level requirements prior to procurement. Ensure that the selected variant matches the required thermal performance and pin compatibility for the target PCB layout design.

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

Select this component when a system requires two distinct, independently controlled voltage rails from a single footprint. Verify that the input voltage remains within the specified operational limits relative to the output voltages. Ensure external capacitors meet the stability requirements regarding capacitance values and equivalent series resistance for optimal transient response.

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

This part belongs to the ISL9011 series of dual LDO regulators designed for space-constrained portable electronics. The series offers various fixed voltage combinations to accommodate different system architectures without requiring multiple discrete regulators. The DFN package facilitates efficient thermal dissipation while minimizing board space usage.

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

The datasheet explicitly states that the ISL9011 is pin-compatible with the Micrel MIC2211. Designers may consider this alternative if sourcing the primary part is difficult, provided the electrical specifications align with the application requirements.