LM2575S-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575S-12 is a monolithic integrated circuit step-down switching regulator manufactured by UMW. It operates as a buck converter with a fixed 12V output and supports up to 2A load current. The device accepts an input voltage range from 4.75V to 40V. It utilizes a TO-263-5L surface-mount package. The internal oscillator switches at 150kHz. The component functions within a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a fixed-frequency oscillator for simplified design
• Includes internal current limiting and thermal shutdown protection
• Requires minimal external components for operation

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load DC/DC conversion modules
• Pre-regulator stages for linear regulators
• Efficient battery-powered systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation on the component marking, as UMW produces this part distinct from Texas Instruments versions. Confirm the specific suffix indicates the correct output voltage and package type. Ensure the datasheet matches the 150kHz switching frequency specification associated with the UMW variant rather than older 52kHz or 58kHz generations.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 12V output is required with up to 2A capacity in a surface-mount format. The TO-263-5L package provides adequate thermal dissipation for moderate loads. Consider the 150kHz switching frequency for smaller passive component sizes compared to lower-frequency alternatives.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 series of simple switcher regulators. The 'S' suffix denotes the TO-263 surface-mount package. The '12' indicates the fixed 12V output version. UMW manufactures this component as a compatible alternative to original designs, maintaining the standard pinout and functional characteristics of the family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2575S-12/NOPB (Texas Instruments) shares the same electrical specifications and pinout. Verify that the replacement source confirms the 150kHz switching frequency if timing-sensitive applications are involved.