ISL9011AIRBBZ-T

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

The ISL9011AIRBBZ-T is a dual low-dropout linear regulator manufactured by Renesas Electronics Corporation. It integrates two independent LDO channels within a single package, providing fixed output voltages of 1.5V on Channel 1 and 1.5V on Channel 2. The device supports continuous output currents of 150mA for the first channel and 300mA for the second channel. It operates with an input voltage range from 2.3V to 6.5V and maintains a typical quiescent current of 45µA when both regulators are active. The component 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 control
• Features extremely low quiescent current consumption and soft-start capability
• Includes comprehensive protection mechanisms such as thermal shutdown and current limiting

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 that the specific part number matches the required voltage configuration, as the suffix indicates fixed outputs. Confirm the package type and lead finish requirements against the design specifications. Ensure compliance with RoHS standards if applicable to the manufacturing process. Check for any obsolescence notices or product change notifications prior to finalizing procurement plans.

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

Select this component for applications requiring dual isolated power rails from a single source. Consider the dropout voltage characteristics relative to the minimum input supply voltage. Evaluate the need for external reference bypass capacitors to optimize noise performance and power supply rejection ratio. Verify that the load capacitance falls within the stable operating range specified in the datasheet.

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. It is pin-compatible with other similar devices like the Micrel MIC2211. The series is characterized by low noise and high PSRR, making it suitable for sensitive analog circuits in mobile communication devices and handheld instrumentation.

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

ISL9011AIRNNZ

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

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 for tuning the noise filter to achieve desired low noise and high PSRR performance.

How does the device handle startup sequences?

The ISL9011A features soft-start circuitry to limit input current surge during enable. If both enable pins are asserted simultaneously, VO1 has priority and powers up first before VO2 begins its ramp.