ET540115Y1B

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

The ET540115Y1B is a linear voltage regulator IC from ETEK Microelectronics, designed to provide a positive fixed output. It supports an output current of 500mA and operates within an input voltage range of 2V to 5.5V. The device features a low dropout voltage of typically 300mV at full load, ensuring efficient power management in battery-powered applications. Packaged in a compact 4-DFN (1x1mm) format, it integrates thermal shutdown and overcurrent protection for reliable operation across industrial and consumer electronics environments.

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

• Provides stable positive fixed output voltage with high line and load regulation
• Compact 4-DFN package suitable for space-constrained portable designs
• Integrated thermal shutdown and overcurrent protection for enhanced reliability

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

• Battery-powered portable devices requiring efficient voltage regulation
• Consumer electronics with strict size limitations
• Industrial control systems needing stable low-noise power supplies

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

Verify the specific output voltage variant required, as fixed output regulators are often available in multiple voltage options within the same package family. Confirm that the 4-DFN (1x1mm) footprint matches your PCB layout constraints. Ensure compatibility with the intended input voltage range of 2V to 5.5V for your application design.

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

Select this component when a small form factor and moderate current capability are prioritized. Compare dropout voltage specifications against your minimum input-output differential requirements. Consider thermal performance in enclosed spaces due to the small package size. Verify that the fixed output voltage meets your system's power rail needs without additional adjustment components.

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

ETEK Microelectronics specializes in high-performance analog integrated circuits, focusing on power management and signal chain solutions. The ET540115Y1B belongs to their linear regulator portfolio, targeting applications where efficiency, size, and cost-effectiveness are critical. This series complements their broader range of power protection and driver ICs for mobile and industrial markets.

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

Check for pin-compatible alternatives from other manufacturers offering similar 500mA fixed output regulators in 4-DFN packages. Verify equivalent electrical characteristics, particularly dropout voltage and thermal resistance, before substitution. Ensure any replacement part maintains the same output voltage tolerance and protection features.