LM2576HVT-15/LF03

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576HVT-15/LF03 is a SIMPLE SWITCHER step-down voltage regulator from Texas Instruments, designed for high-voltage input applications. It provides a fixed 15V output with a maximum current capacity of 3A. The device operates within an input voltage range of 4V to 60V and supports a switching frequency of 52kHz. It features an internal oscillator and uses a TO-220-5 through-hole package (LF03 suffix). The component functions as a buck converter topology regulator.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic power switch rated for 3A load current
• Fixed 15V output option eliminates external feedback resistor networks
• Internal oscillator enables operation at 52kHz for reduced passive component size
• Built-in thermal shutdown protects against excessive junction temperatures

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring high input voltage conversion
• Direct conversion from 48V bus architectures
• Pre-regulator stages for downstream switching regulators
• Battery-powered equipment with wide input voltage ranges

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific LF03 package variant matches the required through-hole mounting configuration. Confirm that the fixed 15V output aligns with the target circuit design, as adjustable versions exist within the same series. Ensure compatibility with the 52kHz switching frequency regarding electromagnetic interference constraints in the final application environment.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 15V output is required from inputs up to 60V. The HVT designation indicates high-voltage tolerance suitable for industrial bus voltages. Compare against the standard LM2576T-15 if lower input voltage requirements allow, noting that the HV version offers higher breakdown capability. Consider the TO-220 package for thermal management needs without active cooling.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2576HV series of SIMPLE SWITCHER regulators. It shares architectural similarities with the LM2575 but offers higher current capability. The family is characterized by minimal external component count and ease of implementation for standard step-down topologies.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2576T-15/NOPB is a direct functional substitute with identical electrical specifications but may differ in package or lead-free compliance status depending on manufacturing lot.