ISL80121IR50Z

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

The ISL80121IR50Z is a positive fixed linear voltage regulator IC from Renesas Electronics Corporation. It provides a single output of 5V with a maximum current capacity of 1A. The device operates within an input voltage range up to 6V and features a typical dropout voltage of 0.13V at full load. Key electrical specifications include a quiescent current of 5 mA, a maximum supply current of 7 mA, and a power supply rejection ratio (PSRR) of 40dB at 1kHz. It is housed in a 10-DFN (3x3) package with an exposed pad.

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

• Ultra-low dropout linear regulation for efficient voltage conversion
• Integrated programmable current limiting for enhanced protection
• Built-in thermal shutdown to prevent overheating damage
• Includes enable control, soft-start, and power-good status signals

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

• Portable battery-powered electronic devices requiring stable 5V rails
• Embedded systems utilizing low-noise power supplies for sensitive analog circuits
• Industrial control modules operating within wide temperature ranges
• Communication equipment needing reliable linear regulation under varying loads

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

Verify component authenticity through authorized distributors due to End-of-Life status. Confirm RoHS3 compliance and MSL level 3 handling requirements during storage and assembly. Check for recent Product Change Notifications regarding labeling or material updates. Ensure replacement strategies are evaluated as this specific part number may be discontinued.

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

Select this regulator when a fixed 5V output is required with high efficiency near the dropout region. Consider the 1A current limit and 6V maximum input voltage constraints. Evaluate the 10-DFN package for space-constrained PCB layouts. Compare PSRR and quiescent current against other LDOs if noise sensitivity or battery life is critical.

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

This component belongs to the ISL80121 family of ultra-low dropout linear regulators designed by Renesas. It shares architectural similarities with other members but offers a fixed 5V output configuration. The series is characterized by integrated protection features and compact packaging suitable for modern surface-mount applications.

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

ISL80121IR5 is listed as a substitute option. Verify pin compatibility and electrical parameters before substitution.

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

What is the maximum input voltage for the ISL80121IR50Z?

The maximum input voltage is 6V.

Does the ISL80121IR50Z include thermal protection?

Yes, it includes thermal shutdown protection to safeguard against overheating.