LM2576T-15/LF03

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576T-15/LF03 is a SIMPLE SWITCHER step-down voltage regulator from Texas Instruments, housed in a TO-220 package. It provides a fixed 15V output with a maximum current of 3A. The device operates with an input voltage range of 4V to 40V and features a switching frequency of 52kHz. It includes internal frequency compensation and a 150mA standby current. The component supports operation over a temperature range of -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic power switch rated for 3A load current
• Fixed 15V output option eliminates external feedback network requirements
• Internal frequency compensation simplifies design and reduces component count
• Built-in thermal shutdown protects against overheating under fault conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply architectures requiring 15V rails
• Battery-powered systems utilizing buck conversion
• Post-regulation stages for higher voltage bus lines

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the LF03 suffix indicates lead-free compliance and specific tape-and-reel or tube packaging variants as defined by Texas Instruments. Confirm the part status is active or NRND through official TI channels before finalizing procurement plans.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a stable 15V output is required at up to 3A with minimal external components. Ensure the input voltage does not exceed 40V and that the thermal environment allows for adequate heat dissipation given the TO-220 package constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2576 family of SIMPLE SWITCHER regulators, designed for high-efficiency DC-DC conversion. The T suffix denotes the TO-220 through-hole package, while the 15 indicates the fixed 15V output version. The LF03 suffix typically specifies lead-free manufacturing and specific packaging configurations.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2576T-15/NOPB serves as a direct lead-free replacement within the same series. Other LM2576 variants with different output voltages or packages may require circuit redesign.