ISL9011AIRJCZ

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

The ISL9011AIRJCZ is a dual low-dropout linear regulator manufactured by Renesas Electronics Corporation. It provides two fixed output voltages: Channel 1 outputs 2.8V at up to 150mA, and Channel 2 outputs 1.8V at up to 300mA. The device operates with an input voltage range of 2.3V to 6.5V and features a typical quiescent current of 45µA when both channels are active. It utilizes a 10-lead 3mm x 3mm DFN package and supports operation from -40°C to +85°C.

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

• Integrates two independent LDOs with separate enable pins for individual power control.
• Features soft-start circuitry to limit input current surge during startup.
• Includes integrated current limit and thermal shutdown protection mechanisms.
• Offers high power supply rejection ratio (PSRR) and low output noise performance.

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

• Portable instruments
• MP3 players
• Medical handheld devices

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

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific ordering suffix matches the required voltage combination and package type. Check for RoHS compliance status and ensure the part meets environmental regulations for your region. Validate that the datasheet revision aligns with your design requirements before finalizing 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. Ensure the application load currents do not exceed 150mA for the first channel and 300mA for the second. Verify that the input voltage remains within the specified 2.3V to 6.5V range. Consider the thermal characteristics of the DFN package if operating near maximum load conditions.

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

This device belongs to the ISL9011A series of dual LDO regulators designed for low noise and high PSRR applications. It is pin-compatible with certain Micrel MIC2211 variants. The series offers various fixed voltage combinations in a tiny 10-lead DFN package suitable for space-constrained designs.

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

Pin-compatible alternatives include the Micrel MIC2211 series. Verify electrical specifications such as dropout voltage and output current capabilities against the original requirements before substitution.

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

How does the ISL9011AIRJCZ manage startup sequences?

The device uses soft-start circuitry to ramp up the output voltage, limiting the initial surge current. If both enable pins are asserted simultaneously, Channel 1 powers up first.

What is the function of the CBYP pin?

The CBYP pin allows connection of an external capacitor to tune the noise filter. A capacitor here adjusts the trade-off between output noise and power supply rejection ratio.