Texas Instruments

LM2575SX-15  

DC Switching Voltage Regulators

LM2575SX-15 Description

The LM2575SX-15 is a fixed-output 15V, 1A buck (step-down) switching voltage regulator from Texas Instruments' SIMPLE SWITCHER® series. Designed for efficiency and reliability, it operates over a 4V to 40V input range, making it suitable for a wide variety of power conversion tasks. With a 52kHz switching frequency, it balances performance and noise, while its non-synchronous rectification simplifies design. The device is packaged in a surface-mount DDPAK and is REACH compliant, though it is marked as obsolete—requiring design considerations for long-term availability.

LM2575SX-15 Features

• Fixed 15V Output: Eliminates the need for external feedback components, streamlining design.
• Wide Input Range (4V–40V): Accommodates diverse power sources, including automotive and industrial supplies.
• High Efficiency (Up to 75–88%): Reduces heat dissipation compared to linear regulators.
• 52kHz Switching Frequency: Minimizes external filter requirements while avoiding audible noise.
• Built-in Protection: Includes thermal shutdown and current limiting for robust operation.
• MSL 3 (168 Hours): Suitable for controlled assembly environments.

LM2575SX-15 Applications

Ideal for step-down power conversion in:

• Industrial Systems: Powering sensors, actuators, and control circuits.
• Automotive Electronics: Converting battery voltage to stable 15V for infotainment or ECUs.
• Telecom Equipment: Providing regulated supply for RF modules or base stations.
• Consumer Electronics: Efficiently driving displays or peripherals.
  Its compact footprint and ease of use make it preferable over linear regulators in space-constrained, high-efficiency designs.

Conclusion of LM2575SX-15

The LM2575SX-15 offers a reliable, fixed-output solution for medium-current DC/DC conversion, combining wide input range, high efficiency, and integrated protections. While obsolete, its legacy design remains valuable for cost-sensitive or legacy systems. Engineers should evaluate alternatives like TI's LM2596 for newer projects, but the LM2575SX-15 excels in simplicity and proven performance for 15V applications.

LM2575SX-15 Documents

Download datasheets and manufacturer documentation for LM2575SX-15

Datasheets :

LM1575(-N,HV)      

HTML Datasheet :

LM1575(-N,HV)