LM2575SX-ADJ

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575SX-ADJ/NOPB is a SIMPLE SWITCHER® step-down voltage regulator from Texas Instruments, housed in a TO-263-5 surface-mount package. It operates with an input voltage range of 4V to 40V and delivers up to 1A of output current. The adjustable output voltage spans from 1.23V to 37V. Key electrical parameters include a typical switching frequency of 52kHz, a maximum quiescent current of 10mA, and a guaranteed efficiency of 77%. The device supports operation across an extended temperature range from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic buck converter topology for efficient step-down regulation
• Adjustable output voltage capability via external resistor network
• Built-in thermal shutdown and current limiting protection mechanisms

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load DC/DC conversion modules
• Pre-regulators for linear post-regulator circuits
• Efficient battery-powered systems requiring wide input ranges

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix against official datasheets to confirm pinout compatibility and tolerance specifications. Ensure the ordering code matches the required package variant and temperature grade. Cross-reference manufacturer documentation to validate RoHS compliance status and moisture sensitivity level prior to integration into production designs.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing high-efficiency power supplies that require adjustable output voltages within a standard 40V input window. It serves as a direct replacement for legacy National Semiconductor parts. Consider the TO-263-5 package for its thermal dissipation capabilities in space-constrained applications without additional heatsinking requirements.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2575 family of SIMPLE SWITCHER regulators, known for reducing design time through integrated power switches. The 'SX' designation indicates the surface-mount TO-263-5 package variant. The 'ADJ' suffix specifies the adjustable output version, distinguishing it from fixed-voltage options like 5.0V or 12V within the same product line.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2575S-ADJ/NOPB is a verified equivalent part number offering identical functionality and pinout configuration.