LF50ABP

Overview

The LF50ABP is a fixed-output linear voltage regulator manufactured by STMicroelectronics, designed to provide a stable 5 V DC output. It supports a maximum continuous load current of 500 mA with an input voltage range up to 16 V. The device features a line regulation and load regulation of 25 mV, ensuring precise voltage stability under varying conditions. Operating within a temperature range of -40 °C to +125 °C, it utilizes a TO-220FP through-hole package for robust thermal management in industrial applications.

Feature Summary

• Provides a fixed 5 V regulated output suitable for digital logic circuits
• Supports high load currents up to 500 mA for power supply applications
• Includes internal thermal protection and short-circuit current limiting

Applications

• General-purpose power supply regulation
• Pre-regulation for switching converters
• Battery-powered equipment voltage stabilization

Procurement Notes

Verify the specific suffix (e.g., ABP vs. ABPT) to confirm the package type, as the LF50ABP denotes a TO-220FP through-hole variant while other suffixes indicate surface-mount options. Confirm RoHS compliance status and check for end-of-life notifications or alternative recommendations from STMicroelectronics before finalizing procurement plans.

Selection Notes

Select this component when a reliable, low-noise 5 V source is required for moderate current loads. Ensure the input voltage remains within the 16 V maximum limit and consider thermal dissipation requirements given the linear topology. Verify that the TO-220FP footprint fits the target PCB design constraints.

Part Context

This part belongs to the LF50 series of fixed-output positive voltage regulators. It shares functional similarities with other industry-standard 5 V LDOs but offers specific performance characteristics defined by STMicroelectronics' manufacturing processes. The series is widely used in consumer electronics and industrial control systems requiring stable voltage rails.

Replacement Considerations

Direct pin-compatible replacements include the LM7805 family or MC7805CT. Verify thermal resistance values and maximum input voltage ratings to ensure compatibility with existing circuit designs.