LM2575T-5G

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575T-5G is a monolithic integrated circuit step-down switching voltage regulator from the LM2575 series, manufactured by onsemi. It provides a fixed 5V output with a maximum load current of 1A. The device operates within an input voltage range of 4.75V to 40V and features a fixed switching frequency of 52kHz. Designed for through-hole mounting in a TO-220-5 package, it supports an operating temperature range from -40°C to +125°C. The regulator includes internal frequency compensation, thermal shutdown, and current limiting.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates all active functions required for a buck converter, including a fixed-frequency oscillator and internal frequency compensation.
• Incorporates thermal shutdown protection and per-cycle current limiting to ensure system safety under fault conditions.
• Supports external shutdown functionality, enabling low standby current consumption when the device is disabled.

Voltage Regulators - DC DC Switching Regulators Applications

• Distributed power supply systems requiring efficient step-down conversion
• Pre-regulator circuits for linear post-regulators
• Battery-powered applications needing high-efficiency voltage regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the component authenticity against official onsemi datasheets and ordering information. Confirm that the part number suffix 'G' indicates RoHS compliance and halogen-free status as specified in the manufacturer's documentation. Ensure the TO-220-5 package dimensions match your PCB footprint requirements before finalizing procurement decisions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V output is required from an input voltage between 4.75V and 40V. It is suitable for designs prioritizing simplicity and reliability over adjustable output flexibility. Consider the thermal performance in the TO-220-5 package relative to the expected load current and ambient temperature conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 family of switching regulators, which are designed as direct replacements for common three-terminal linear regulators. The series offers improved efficiency and reduced heat dissipation requirements, often eliminating the need for large heat sinks in moderate load applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Compatible alternatives include the LM2575T-5.0/NOPB from Texas Instruments, which shares identical electrical specifications and pinout configuration. Verify package compatibility and thermal characteristics when substituting manufacturers.