ISL9011IRNCZ-T

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

The ISL9011IRNCZ-T is a dual low-dropout linear regulator manufactured by Renesas Electronics Corporation, housed in a 10-lead 3mm x 3mm DFN package. It provides two independent fixed output voltages: Channel 1 delivers 3.3V at up to 150mA, while Channel 2 supplies 1.8V at up to 300mA. The device operates within an input voltage range of 2.3V to 6.5V and maintains a typical quiescent current of 45µA with both channels active. It features ±1.8% regulation accuracy, high power supply rejection ratio (70dB at 1kHz), and integrated soft-start functionality.

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

• Integrates two independent LDOs with separate enable pins for individual channel control
• Features extremely low quiescent current consumption and high PSRR for noise-sensitive applications
• Includes built-in thermal shutdown, current limit protection, and soft-start circuitry

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 '-T' confirms tape and reel packaging as per manufacturer technical briefs. Confirm that the IR suffix corresponds to the industrial temperature range (-40°C to +85°C). Ensure compatibility with RoHS compliance standards and lead-free soldering operations before procurement.

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

Select this component when a compact dual-output solution is required for portable electronics. Verify that the load requirements do not exceed 150mA on Channel 1 or 300mA on Channel 2. Ensure the application benefits from the low dropout voltage and fast transient response capabilities provided by the PMOS pass transistor design.

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

This part belongs to the ISL9011 series of dual LDO regulators designed for high performance in small form factors. It is pin-compatible with certain Micrel MIC2211 variants. The device utilizes a 10-lead DFN package optimized for surface mount assembly, providing excellent thermal performance through an exposed pad ground connection.

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

ISL9011IRNNZ

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

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

If both EN1 and EN2 are brought high simultaneously, VO1 has priority and powers up first. If one pin is asserted before the other stabilizes, the device delays the second turn-on until the first output reaches its target level.

What is the recommended capacitor value for the CBYP pin?

A 0.01µF capacitor is recommended for most high-performance applications to implement a 100Hz lowpass filter. For lowest noise applications, a 0.1µF or greater capacitor should be used.