LM2575T-ADJ/LF03

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575T-ADJ/LF03 is a step-down switching regulator from the Texas Instruments SIMPLE SWITCHER family, designed for high-efficiency power conversion. It operates with an input voltage range of 4V to 60V and delivers up to 1A output current. The device supports adjustable output voltages starting from 1.23V, utilizing external resistors for precise regulation. Key electrical parameters include a maximum efficiency of 77% and ripple noise of 150mV. It functions within a temperature range of -40°C to 125°C and is housed in a TO-220-5 through-hole package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic switching regulator simplifying design requirements
• Internal fixed-frequency oscillator enabling straightforward timing control
• Built-in thermal shutdown protection for operational safety

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems
• Pre-regulators for linear post-regulator modules
• Efficient on-card switching regulators

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix LF03 against the manufacturer datasheet to confirm lead-free compliance and RoHS status. Ensure the ordering part number matches the exact package variant required for your PCB footprint. Cross-reference the revision level to guarantee compatibility with existing design specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a robust, single-output buck converter is needed for moderate current applications. It is suitable for designs requiring wide input voltage ranges and adjustable output levels. Consider thermal management requirements due to the through-hole package and internal power dissipation characteristics under heavy loads.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 series, a well-established line of simple-switcher regulators known for ease of use. The LM2575 family includes fixed-voltage and adjustable variants, offering designers flexibility in creating efficient DC-DC conversion stages without complex external circuitry.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Compatible substitutes include LM2575T-ADJ/NOPB and LM2575HVT-ADJ/LF03. Verify pinout compatibility and thermal performance before substitution. Ensure the alternative part meets the same input voltage and current specifications.