ISL9011AIRBLZ-T

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

The ISL9011AIRBLZ-T is a dual low-dropout linear regulator manufactured by Renesas Electronics Corporation. It integrates two independent LDO channels within a single 10-lead, 3mm x 3mm 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 ranging from 2.3V to 6.5V and maintains regulation accuracy within ±1.8% across the full operating 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 power control
• Features extremely low quiescent current consumption and integrated soft-start circuitry
• Includes comprehensive protection mechanisms such as thermal shutdown and current limiting
• Stable operation guaranteed with ceramic capacitors having low equivalent series resistance

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

• Portable instruments and handheld devices
• Cell phones and smart phones
• Medical handheld equipment

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

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm that the specific part marking matches the datasheet specifications. Ensure proper handling procedures are followed due to electrostatic discharge sensitivity. Check for RoHS compliance status if required by local regulations.

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

Select this component when a compact dual-rail power solution is required for portable electronics. Consider the specific output voltages of 1.5V and 2.9V against system requirements. Evaluate the need for separate enable controls and the benefits of low standby current in battery-operated applications.

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

This component belongs to the ISL9011A family of dual LDO regulators designed for space-constrained applications. It was originally developed by Intersil before being acquired by Renesas Electronics Corporation. The device utilizes a tiny 10-lead DFN package to minimize board footprint while delivering high performance.

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

The datasheet explicitly states pin compatibility with the Micrel MIC2211. Verify electrical parameters and pin assignments before substitution. Other variants within the ISL9011A family offer different fixed voltage combinations but share the same package and functional architecture.

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

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

If both EN1 and EN2 are asserted simultaneously, the VO1 output has priority and powers up first. If one pin is asserted before the other stabilizes, the device delays the second output 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 reduce reference noise further.