LF25CPT

Overview

The LF25CPT is a low-dropout (LDO) voltage regulator manufactured by STMicroelectronics, designed for applications requiring stable power delivery with minimal voltage loss. It provides a fixed output voltage of 2.5V and supports an input voltage range from -0.5V to 40V. The device delivers a maximum output current of 0.5A. Key electrical characteristics include a typical dropout voltage of 0.45V and low quiescent current consumption. It utilizes a DC-to-DC conversion topology suitable for efficient power management in compact electronic systems.

Feature Summary

• Very low dropout voltage capability ensures efficient operation even when input voltage approaches the output level.
• Low quiescent current consumption minimizes power waste, making it ideal for energy-sensitive designs.
• Integrated on-off switch functionality allows for precise control over power states within the system.

Applications

• Battery-powered portable electronic devices
• Low-noise analog circuit power supplies
• Low-power embedded systems

Procurement Notes

Verify the exact package type and thermal performance requirements against your specific PCB layout constraints. Confirm that the 2.5V output aligns with your load specifications. Ensure input voltage conditions remain within the specified -0.5V to 40V range during all operational phases. Check for any specific handling or storage requirements indicated in the official datasheet before integration.

Selection Notes

Select this component when a stable 2.5V rail is required with minimal voltage drop across the regulator. Its low quiescent current makes it superior to standard regulators in battery-operated contexts where extending runtime is critical. Consider its thermal dissipation capabilities relative to the expected load current and ambient temperature conditions to ensure reliable long-term operation without overheating.

Part Context

This LDO belongs to the LFXX series, which offers various fixed output voltages. The series is characterized by its ability to operate with very small differences between input and output voltages. It is part of STMicroelectronics' portfolio focused on providing efficient, low-noise power solutions for consumer and industrial electronics requiring compact form factors and high reliability.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative LDOs offering similar 2.5V output, 0.5A current capacity, and low dropout characteristics if sourcing issues arise.