LM2575S-5.0

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575S-5.0/NOPB is a SIMPLE SWITCHER® 1A step-down voltage regulator from Texas Instruments, housed in a TO-263-5 (D2PAK) surface-mount package. It provides a fixed 5V output with a maximum load current of 1A. The device accepts an input voltage range of 4V to 40V and operates at a typical switching frequency of 52kHz. It features ±4% output voltage accuracy over line and load conditions, internal frequency compensation, and supports external shutdown. Operating temperatures range from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated buck topology with fixed-frequency oscillator for simplified design
• Built-in thermal shutdown and cycle-by-cycle current limiting for protection
• External shutdown pin capability for low standby power consumption
• Requires minimal external components compared to linear regulators

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Pre-regulator stages for switching regulators
• Battery-powered equipment power management
• Industrial control system power distribution

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix NOPB indicates lead-free/RoHS compliance. Confirm the package is TO-263-5. Ensure the manufacturer is Texas Instruments or authorized licensee. Check datasheet revision for any parameter updates. Validate moisture sensitivity level requirements during assembly.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part for applications requiring a fixed 5V output up to 1A. Consider the TO-263-5 package for thermal performance in surface-mount designs. Compare against adjustable variants if flexible output is needed. Evaluate input voltage range compatibility with the source supply. Review thermal dissipation requirements based on load current and ambient temperature.

Voltage Regulators - DC DC Switching Regulators Part Context

Part of the LM2575 family of monolithic integrated step-down converters. Replaces traditional three-terminal linear regulators to reduce heat dissipation and component size. Designed for ease of use with built-in frequency compensation and fixed-frequency operation. Widely used in industrial and commercial power supplies.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2575S-5.0/NOPB is functionally equivalent to LM2575S-5.0. Cross-reference with LM2575T-5.0 for through-hole alternatives. Verify pinout compatibility when substituting with other manufacturers' versions.

Voltage Regulators - DC DC Switching Regulators FAQ

What is the maximum input voltage for the LM2575S-5.0?

The maximum input voltage is 40V.

Does the LM2575S-5.0 support external shutdown?

Yes, it includes an external shutdown pin that reduces quiescent current significantly.

What is the typical switching frequency?

The typical switching frequency is 52kHz.