LM2575T-015

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575T-015 is a monolithic integrated circuit step-down switching regulator from onsemi, designed for high-efficiency power conversion. It supports an input voltage range of 4.75 V to 40 V and delivers a guaranteed 1.0 A output current. The device operates at a fixed internal oscillator frequency of 52 kHz, minimizing external component requirements to just four parts. It features ±4% maximum output voltage regulation over line and load conditions, TTL shutdown capability for low-power standby modes, and includes thermal shutdown and current limit protection mechanisms.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Fixed 52 kHz internal oscillator simplifies design by eliminating the need for external timing components.
• Integrated thermal shutdown and current limit protection ensure system safety under fault conditions.
• TTL shutdown capability allows for efficient low-power standby mode operation.

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 that the ordered part number corresponds specifically to the LM2575T-015 variant with a fixed 5V output. Confirm the package type matches the required TO-220 or TO-263 form factor. Ensure the manufacturer is identified as onsemi or its authorized predecessors to guarantee compliance with the specified electrical characteristics and reliability standards.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required from a wide input voltage range up to 40V. It is suitable for designs prioritizing simplicity and efficiency over adjustable output flexibility. Consider the thermal performance in the chosen package if operating near the maximum current limit or high ambient temperatures.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2575 series of switching voltage regulators, which are widely used for replacing linear regulators to reduce heat dissipation. The series offers various fixed voltage options and an adjustable version, providing designers with flexible solutions for buck converter applications across industrial and consumer electronics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Compatible substitutes include the LM2575-5.0 and LM2575T-5.0 from Texas Instruments, which share identical pinouts and electrical specifications. Other equivalents may be found among manufacturers producing pin-compatible 1A buck regulators with similar input ranges and frequencies.