Drive Smarter Power Design with SLKOR's LM2575S-ADJ Switching Regulators - 1A & 3A Performance You Can Count On

 

Description
 The LM2575/LM2576 series are highly integrated monolithic switching regulators designed for efficient DC-DC step-down (buck) or step-up/down (buck-boost) conversion. These regulators deliver precise output voltage control across varying input conditions — line, load, and temperature — with minimal external components. The LM2575 supports up to 1A output current, while the LM2576 offers up to 3A, making them ideal for a wide range of power supply needs.

Each device includes an internal switching regulator and compensation network, simplifying power supply design. With just a choke, catch diode, and two capacitors, users can build compact, efficient power converters. Built-in current limiting and thermal shutdown offer solid protection against overload and overheating.

Compared to traditional 3-terminal linear regulators, the LM2575/76 series provides higher efficiency, reduced heat generation, and often eliminates the need for external heat sinks.

Features

• Direct pin-to-pin replacement for National LM2575/LM2576 series
• Minimal external components required (only 4)
• Supports buck and buck-boost topologies
• Fixed output options: 3.3V, 5V, 12V
• Adjustable output range: 1.23V to 35V
• Up to 82% efficiency (5V output)
• Wide input voltage range: 4V to 40V
• On/Off control via enable pin
• Operates across industrial temperature ranges
• Available in TO-220 and TO-263 packages

Applications

• Microcontroller power systems
• Medical devices
• Industrial automation equipment
• Precision instrumentation systems

High-Efficiency Power Conversion Made Simple — LM2575S-ADJ Switching Regulator

The LM2575/LM2576 series from STMicroelectronics is a versatile family of monolithic switching regulators designed for efficient step-down (buck) and buck/boost power applications. With an integrated switching controller and compensation network in a single package, these regulators significantly simplify DC-DC power supply design — requiring only a choke and a few passive components.

Among them, the LM2575S-ADJ stands out as a high-performance adjustable output model offering excellent efficiency, stability, and flexibility for demanding environments. Ideal for applications where size, thermal management, and power reliability matter most, this regulator is an outstanding alternative to traditional linear regulators.

Why Choose the LM2575S-ADJ?

• 🔋 High Efficiency: Delivers up to 82% efficiency at 5V output, minimizing power loss and heat generation.
• 🔧 Wide Input Voltage Range: Accepts 4V to 40V, making it adaptable to a variety of power sources.
• 🌡️ Industrial-Grade Reliability: Operates across a wide temperature range, ensuring stability even in harsh industrial conditions.
• 🛡️ Built-in Protection: Integrated current limiting and thermal shutdown for enhanced safety and durability.
• 🔩 Compact Design: High integration reduces external components and heat sink requirements — perfect for space-constrained designs.

Key Applications

• 🏥 Medical Devices — Where precision and stability are essential
• 🏭 Industrial Automation Systems — Robust enough for factory-floor environments
• 📟 Instrumentation Power Supplies — Reliable performance for sensitive equipment
• 🔌 Microcontroller-Based Systems — Clean, consistent power delivery

Explore More Power Solutions
 In addition to the LM2575S-ADJ, STMicroelectronics also offers a broad portfolio of efficient DC-DC power ICs, including:

• LM2596SX-12 / LM2596SX-ADJ / LM2596S-5.0 / LM2596S-12 / LM2596S-ADJ
• LM2576S-3.3 / LM2577S-ADJ / SL2733

These chips provide flexible, high-efficiency solutions for everything from embedded electronics to industrial control panels.

About Slkor Semiconductor

Shenzhen Slkor Micro Semicon Co., Ltd. is a fast-growing high-tech company specializing in third-generation SiC power devices and conventional semiconductor solutions. Backed by an elite R&D team from Tsinghua University and Yonsei University (Korea), Slkor is at the forefront of innovation in materials science, semiconductor processes, and device design.

Our product portfolio includes:

• Discrete components: Diodes, transistors, MOSFETs, and power devices
• Integrated circuits: Power management ICs, analog chips, and more

Originally established as an IP design house, Slkor has evolved into a national-level high-tech enterprise, integrating R&D, manufacturing, and global sales services. Under the leadership of CEO Mr. Song Shiqiang, Slkor is committed to delivering high-performance, domestically produced alternatives to globally recognized semiconductor brands.

To ensure fast and localized service, Slkor operates two flagship stores in Shenzhen’s world-famous electronics hub, Huaqiangbei.

📩 For inquiries, please contact: sales03@slkormicro.com