ISL9011IRGCZ

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

The ISL9011IRGCZ 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 2.7V 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 from an input supply voltage range of 2.3V to 6.5V and maintains functionality across an ambient 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 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 internal current limiting and thermal shutdown.
• Maintains stability when used with ceramic output capacitors ranging from 1µF to 10µF.

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

• Power management in PDAs, cell phones, and smart phones
• Portable instruments and MP3 players
• Handheld devices including medical handheld equipment

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

Verify the specific ordering suffix against manufacturer documentation to confirm exact output voltages and package variations. Confirm RoHS compliance status and lead-free material specifications prior to integration. Check for product lifecycle notices regarding availability or potential obsolescence before finalizing procurement plans.

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

Select this component when a dual-channel power solution is required within a constrained board area. Ensure the application load currents remain within the 150mA and 300mA limits for Channels 1 and 2 respectively. Verify that the input voltage remains above the minimum threshold while accounting for dropout requirements at maximum load conditions.

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

This part belongs to the ISL9011 series of dual LDO regulators designed for portable electronics. The series offers various fixed output voltage combinations to suit different system rail requirements. The DFN package facilitates surface-mount assembly and provides efficient thermal dissipation through an exposed pad design.

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

The datasheet indicates pin compatibility with the Micrel MIC2211. Verify functional equivalence and electrical parameters before substituting with other dual LDO components.

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

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

When both EN1 and EN2 are asserted simultaneously, Channel 1 (VO1) has priority and powers up first. If one pin is asserted before the other stabilizes, the device delays the second channel's turn-on until the first 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 noise performance and Power Supply Rejection Ratio (PSRR).