LM2575T-015

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575T-015 is a monolithic integrated circuit step-down switching regulator designed for high-efficiency power conversion. It provides a fixed 15V output with a guaranteed maximum load current of 1.0 A. The device operates within an input voltage range of 4.75 V to 40 V and utilizes a fixed 52 kHz internal oscillator. Key electrical parameters include ±4% maximum output voltage regulation over line and load conditions, thermal shutdown protection, and current limit capabilities. The component is housed in a TO-220 package suitable for through-hole mounting.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Fixed 15V output configuration with guaranteed 1.0 A load driving capability
• Integrated 52 kHz fixed frequency internal oscillator for simplified design
• Built-in thermal shutdown and current limit protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Simple and high-efficiency step-down (buck) regulators
• Efficient pre-regulator for linear regulators
• Positive to negative converters (Buck-Boost)
• Power supply for battery chargers

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer origin carefully, as the LM2575 series was originally developed by National Semiconductor and is now produced by Texas Instruments. Ensure the specific part number matches the required pinout and package dimensions. Confirm RoHS compliance status if environmental regulations apply to your assembly process. Cross-reference datasheets from authorized distributors to ensure the component meets all specified electrical tolerances.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 15V output is required from an input voltage between 4.75 V and 40 V. It is suitable for designs needing up to 1.0 A continuous current with minimal external components. Consider the TO-220 package for applications requiring through-hole mounting or direct heatsinking. Evaluate thermal management requirements based on the expected input-output voltage differential and load current.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2575 series of SIMPLE SWITCHER power converters. The series includes various fixed voltage options (3.3V, 5.0V, 12V, 15V) and an adjustable version. These regulators are widely used to replace traditional linear regulators, offering significantly higher efficiency and reduced heat dissipation requirements in DC-DC conversion applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Compatible substitutes include LM2575T-15/NOPB and LM2575T-15X/NOPB from Texas Instruments. Other manufacturers may offer equivalent parts under different part numbers, but verification of pin compatibility and electrical specifications is essential before substitution.