ISL9011IRKCZ-T

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

The ISL9011IRKCZ-T is a dual low-dropout linear regulator manufactured by Renesas Electronics Corporation. It integrates two independent LDO channels within a compact 10-lead, 3mm x 3mm Dual Flat No-Lead (DFN) package. Channel 1 provides a fixed output voltage of 2.85V with a maximum continuous current capability of 150mA. Channel 2 delivers a fixed output voltage of 1.8V with a maximum continuous current capability of 300mA. The device operates over an input supply voltage range from 2.3V to 6.5V and supports an ambient operating temperature range from -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 channel control.
• Features extremely low quiescent current consumption and integrated soft-start circuitry to limit input current surges during activation.
• Includes comprehensive protection mechanisms such as thermal shutdown, current limiting, and undervoltage lockout.
• Offers high power supply rejection ratio and low output noise performance suitable for sensitive analog applications.

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

• Power management in PDAs, cell phones, and smart phones
• Portable instruments and MP3 players
• Medical handheld devices

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

Verify the specific ordering suffix to confirm the tape and reel packaging configuration. Confirm that the manufacturer has officially designated this component as obsolete or end-of-life. Ensure that any replacement components maintain compatibility with the required 10-lead DFN footprint and electrical specifications.

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

Select this component when a dual-output power solution is required within a constrained board area. The fixed 2.85V and 1.8V outputs are optimized for standard logic and analog rails. Verify that the application load requirements do not exceed the 150mA and 300mA limits for the respective channels.

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

This part belongs to the ISL9011 series of dual LDO regulators originally developed by Intersil before its acquisition by Renesas Electronics. The series is characterized by low noise, low standby current, and high PSRR. The IRKCZ-T designation specifically identifies the version with 2.85V and 1.8V outputs packaged in a lead-free DFN format.

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

ISL9011IRKKZ

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 turn-on until the first output reaches its target level.

What is the function of the CBYP pin?

The CBYP pin serves as the reference bypass capacitor connection. Connecting a capacitor between this pin and ground allows tuning of the noise filter to achieve desired low noise and high PSRR performance.