ISL80101IR18Z

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

The ISL80101IR18Z is a single-output, fixed-voltage Low Dropout (LDO) linear regulator manufactured by Renesas Electronics under the Intersil brand. It provides a fixed 1.8V output with a maximum continuous current of 1A. The device operates within an input voltage range of 2.2V to 6V and features a typical dropout voltage of 90mV at full load. Key electrical specifications include a Power Supply Rejection Ratio (PSRR) of 58dB and an output noise of 100μV RMS. It is housed in a compact 10-lead DFN package measuring 3mm x 3mm.

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

• Fixed 1.8V output configuration for simplified design
• High PSRR for effective noise suppression
• Low quiescent current consumption
• Integrated thermal shutdown protection

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

• Portable battery-powered devices
• Wireless communication modules
• Embedded systems requiring clean power rails
• Medical instrumentation

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

Verify the specific suffix 'R18Z' confirms the fixed 1.8V output variant, as other suffixes may indicate adjustable or different voltage options. Confirm RoHS compliance status and moisture sensitivity level (MSL) requirements for your assembly process. Check for recent Product Change Notifications (PCNs) regarding labeling or manufacturing site changes that may affect part identification.

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

Select this component when a stable 1.8V rail is required from a 2.2V to 6V source with minimal external components. Ensure the input voltage remains above the minimum threshold to maintain regulation. Consider the thermal performance in the 10-DFN package if operating near the 1A limit or in high ambient temperatures. Verify that the load transient response meets system timing requirements.

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

This LDO belongs to the ISL80101 series, designed for high-performance analog applications. The series utilizes a sub-micron BiCMOS process to achieve low noise and fast transient response. It is part of Renesas's portfolio of power management integrated circuits (PMICs) aimed at portable and industrial electronics.

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

Direct substitutes include ISL80101AIRAJZ-T (adjustable version) if voltage flexibility is acceptable. For fixed 1.8V needs, verify pin-compatible alternatives from the same family. Cross-reference with ISL80102 or ISL80103 only if higher current capacity (2A/3A) is required and pinout compatibility is confirmed.