ISL9011IRBBZ

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

The ISL9011IRBBZ is a dual low-dropout linear regulator manufactured by Renesas Electronics Corporation, housed in a 10-lead 3mm x 3mm Dual Flat No-Lead (DFN) package. It integrates two independent LDO channels with fixed output voltages of 1.5V for Channel 1 and 1.5V for Channel 2. The device supports a continuous output current of 150mA on the first channel and 300mA on the second. It operates within an input voltage range of 2.3V to 6.5V and maintains a typical quiescent current of 45µA when both regulators are active. The component provides high power supply rejection ratio performance and includes integrated protection features such as thermal shutdown and current limiting.

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

• Integrates two independent high-performance LDOs with separate enable pins for individual control
• Features extremely low quiescent current consumption and soft-start circuitry to limit input current surges during activation
• Includes comprehensive protection mechanisms against overcurrent conditions and overheating via thermal shutdown
• Designed for stability with ceramic output capacitors ranging from 1µF to 10µF

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 voltage rails for handheld medical devices

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

Verify the specific ordering suffix to confirm the exact output voltage configuration, as the base model number covers multiple combinations. Confirm that the required package type matches the 10-lead DFN specification. Ensure the application environment stays within the specified operating temperature range of -40°C to +85°C. Check for any recent product change notices regarding manufacturing updates or material composition changes.

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

Select this component when a compact dual-rail solution is required for battery-powered systems. It is suitable for applications demanding low noise and high PSRR, particularly when utilizing the reference bypass pin for external filtering. Consider the dropout voltage characteristics at maximum load currents to ensure adequate headroom between the input supply and the 1.5V outputs.

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 output voltage combinations to accommodate different system requirements while maintaining a consistent footprint and pinout. It serves as a direct replacement for similar dual LDO architectures in legacy designs requiring low standby current.

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 migrating from other dual LDO platforms should verify that the alternative component meets the same electrical specifications for output current, dropout voltage, and stability requirements.