ISL9011AIRJMZ

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

The ISL9011AIRJMZ 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 DFN package. Channel 1 provides a fixed output voltage of 2.8V with a maximum continuous current capability of 150mA. Channel 2 delivers a fixed output voltage of 3.0V with a maximum continuous current capability of 300mA. The device operates from an input supply voltage ranging between 2.3V and 6.5V. It features a typical quiescent current of 45µA when both channels are active and less than 0.1µA in shutdown mode. The component supports an operating temperature range from -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 and MP3 players
• Smart phones and PDAs
• Medical handheld devices

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

Verify the specific ordering suffix to confirm the exact output voltage combination, as the base part number covers multiple variants. Confirm that the required package type matches the 10-lead DFN specification. Ensure the application environment remains within the specified -40°C to +85°C operating temperature range. Check for RoHS compliance requirements if applicable to the manufacturing process. Validate that the external capacitor values align with the stability requirements outlined in the datasheet.

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

Select this component when a dual rail power solution is required in a space-constrained design. The distinct current ratings allow one channel to support higher load demands while the other serves lower-power logic. Verify that the input voltage range accommodates the system's battery or supply variations. Consider the noise filtering capabilities provided by the reference bypass pin for sensitive analog circuits. Ensure the PCB layout supports the thermal dissipation characteristics of the exposed pad DFN package.

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

This device belongs to the ISL9011A family of dual LDO regulators designed for portable electronics. The series emphasizes low noise and high PSRR to protect sensitive loads from power supply interference. The manufacturer utilizes a tiny surface-mount package to minimize board space usage. The product line includes various fixed voltage combinations to suit different digital and analog subsystems.

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

The datasheet explicitly states that the ISL9011A is pin-compatible with the Micrel MIC2211. Engineers may consider this alternative if sourcing the primary part is difficult. Verify that the substitute meets the same electrical specifications regarding current capacity and dropout voltage.