LM2575HVT-15/LB03

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575HVT-15/LB03 is a SIMPLE SWITCHER step-down voltage regulator from Texas Instruments. It operates with an input voltage range of 4V to 60V and provides a fixed 15V output at up to 1A. The device features a switching frequency of approximately 52kHz, enabling the use of compact external components. It includes internal frequency compensation and a fixed 52kHz oscillator for simplified design. The regulator incorporates thermal shutdown and current limit protection. It is housed in a TO-220-5 package suitable for through-hole mounting.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage switch rated for 60V input
• Fixed 15V output configuration
• Internal frequency compensation simplifies external component selection
• Built-in thermal shutdown and current limiting protection

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems
• Pre-regulators for switching regulators
• Efficient straight-through DC/DC converters

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the LB03 suffix against official Texas Instruments documentation to confirm specific marking or tape-and-reel specifications. Ensure compatibility with existing PCB footprints for the TO-220-5 package. Confirm RoHS compliance status as indicated in the latest datasheet revision. Validate that the fixed 15V output meets system requirements without adjustment.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 15V output is required from a wide input voltage range up to 60V. The TO-220-5 package supports through-hole assembly. Consider the 52kHz switching frequency for trade-offs between component size and efficiency. Verify that the 1A output current capacity aligns with load demands. Thermal management should be evaluated based on expected power dissipation.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 series of SIMPLE SWITCHER regulators. The HVT designation indicates a high-voltage version capable of handling inputs up to 60V. The T suffix denotes the TO-220-5 through-hole package. The 15 specifies the fixed output voltage. This series is designed for ease of use with minimal external components.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2575HVT-15/NOPB is a lead-free alternative within the same family. Verify pinout and electrical specifications match before substitution. Other variants in the LM2575 series may offer different output voltages or packages.