LM2575SX-12

Voltage Regulators - DC DC Switching Regulators Overview

The LM2575SX-12/NOPB is a SIMPLE SWITCHER® 1A Step-Down Voltage Regulator manufactured by Texas Instruments. It operates with an input voltage range of 4.75 V to 40 V and provides a fixed 12 V output at up to 1 A current. The device features a switching frequency of 58 kHz, enabling the use of small inductors and capacitors. It includes internal frequency compensation for stability and offers thermal shutdown protection. The regulator is housed in a TO-263-5 (DPAK) surface-mount package and supports operation from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated monolithic power switch rated for 1 A continuous load current
• Fixed 12 V output option eliminates external feedback resistor networks
• Internal frequency compensation ensures stable operation without complex circuit design
• Thermal shutdown protection safeguards the device during overload conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for digital logic circuits
• Pre-regulation for switching regulators
• Simple step-down conversion from higher voltage buses
• Battery-powered systems requiring efficient voltage reduction

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix NOPB indicates lead-free packaging compliant with RoHS standards. Confirm the specific variant matches the required output voltage and package type. Check datasheet revisions for any updates to electrical characteristics or recommended component values. Ensure the supplier provides authentic Texas Instruments products to avoid counterfeit components affecting performance.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 12 V output is required from an input voltage between 4.75 V and 40 V. Consider the 58 kHz switching frequency for balancing efficiency and component size. Evaluate thermal requirements based on the TO-263-5 package and expected load current. Compare against adjustable variants if precise voltage tuning is necessary beyond the fixed 12 V specification.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM2575 family of SIMPLE SWITCHER regulators, which are designed for ease of use in step-down applications. The SX suffix denotes the surface-mount DPAK package variant. It complements through-hole versions like the LM2575T series and high-voltage HV variants within the same product line, offering standardized performance across different mounting styles.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2575S-12/NOPB is a direct equivalent with identical specifications and pinout. LM2575SX-12/NOPB represents the same functional device with explicit SX package designation. Cross-reference with LM2575HV-12 variants only if input voltages exceed 40 V, noting differences in maximum input ratings.