ISL9011AIRFCZ

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

The ISL9011AIRFCZ is a dual low-dropout (LDO) voltage regulator manufactured by Renesas Electronics Corporation. It features two independent channels with fixed output voltages of 2.5V and 1.8V. The device supports an input voltage range from 2.3V to 6.5V. Channel 1 provides a maximum output current of 150mA, while Channel 2 delivers up to 300mA. Key electrical parameters include a typical dropout voltage of 120mV at 150mA, a quiescent current of 45µA, and a power supply rejection ratio (PSRR) of 70dB at 1kHz. The unit operates within a temperature range of -40°C to +85°C and utilizes a 10-lead DFN package.

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

• Integrates two high-performance LDOs with separate enable pins for independent control
• Provides excellent load regulation with less than 1% voltage change across the full load current range
• Features a reference bypass pin allowing external capacitor adjustment for optimized noise filtering and high PSRR applications
• Includes built-in soft-start functionality to limit input current surge during enable

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

• Portable instruments and MP3 players
• Handheld devices including medical handhelds
• PDAs, cell phones, and smart phones

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

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and lead-free specifications prior to integration. Check for end-of-life notices or production change notifications that may affect long-term availability. Ensure storage conditions meet moisture sensitivity level requirements to prevent package damage during soldering processes.

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

Select this component when designing circuits requiring dual isolated rails with distinct current capabilities. The 150mA/300mA split suits systems needing a higher current rail for logic and a lower current rail for sensitive analog sections. Verify that the required output voltages match the fixed options available in the datasheet. Consider the 1µF to 10µF ceramic capacitor stability requirement for proper loop compensation.

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

This part belongs to the ISL9011A series of dual LDO regulators designed for portable electronics. It is pin-compatible with certain competitor devices like the Micrel MIC2211, facilitating potential design swaps. The series emphasizes low noise and high PSRR, making it suitable for RF and audio applications where power supply integrity is critical for signal quality.

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

The ISL9011AIRFCZ is marked as obsolete in multiple distributor records. Engineers should identify equivalent dual-channel LDOs with matching 150mA/300mA output currents and compatible 2.5V/1.8V fixed outputs. Verify pin compatibility and thermal performance before substituting.