Is Your Power Converter Holding You Back? Here's Why Engineers Trust SLKOR LM2596S-5.0 for High-Frequency, High-Current Designs

 Today, we’re taking a closer look at the LM2596S-5.0 — a powerful 3A, 150kHz DC switching regulator designed for efficient voltage stabilization in demanding power applications.

Description
 The LM2596 / LM2596HV is a high-performance, fixed-frequency PWM DC-DC voltage regulator operating at 150kHz. Designed to deliver up to 3A of output current, it offers high efficiency, low ripple, and excellent line and load regulation. The PWM control supports a duty cycle range from 0% to 100%, making it highly adaptable for a variety of power management needs.

This converter features a built-in oscillator and frequency compensation circuit, ensuring simple implementation with minimal external components. It also integrates multiple protection functions, including enable control, over-temperature protection, over-current protection, and hysteresis-based peak current protection.

Notably, under secondary over-current conditions, the converter intelligently reduces its switching frequency from 150kHz to 50kHz, enhancing reliability and protecting downstream components. This makes it a reliable choice for compact, efficient power supply designs.

Key Features

• Wide Input Voltage Range:
• Standard model: 4.5V to 40V
• High-voltage (HV) model: Up to 60V
• Flexible Output Options:
• Fixed outputs: 3.3V, 5V, 12V
• Adjustable output:
• Standard: 1.23V to 37V
• HV model: Up to 57V
• Precision PWM Control:
• Adjustable duty cycle: 0% to 100%
• Fixed switching frequency: 150kHz
• Low saturation voltage drop: 1.5V (typ.)
• Strong Output Capability:
• Delivers a continuous 3A output current
• Built-In Protection & Control:
• Hysteresis ON/OFF switching
• Over-temperature and over-current protection
• Frequency compensation integrated
• High Performance:
• Excellent efficiency
• Stable line and load regulation

Target Application

• LCD monitors and LCD TVs
• Digital photo frames
• Set-top boxes
• Modems and demodulators
• Telecom and networking devices

The LM2596S-5.0 from Sarc Microelectronics is a high-performance DC-DC buck converter designed for efficiency, stability, and simplicity. As part of the LM2596/LM2596HV series, it delivers a regulated 5V output and supports up to 3A output current, making it an excellent power solution for a wide range of low-voltage electronic applications.

Operating at a fixed switching frequency of 150kHz using PWM modulation, the LM2596 series ensures high efficiency with low output ripple, excellent line and load regulation, and reliable thermal performance. Its wide input voltage range — up to 40V for the standard version and 60V for the HV model — allows flexibility across various systems and devices.

Why Choose LM2596S-5.0?

• Efficient Performance: 5V regulated output with up to 3A drive current.
• Compact & Easy to Use: Requires minimal external components, thanks to an integrated frequency compensation module.
• Robust Protection Features:
• Over-temperature and over-current protection
• Hiccup-mode short-circuit protection
• Built-in soft start and enable functions to prevent inrush current or overload
• Flexible Duty Cycle Control: Supports 0–100% duty cycle for adjustable output voltage (in adjustable models).

Ideal Applications:

• LCD Monitors & TVs: Ensures clean, stable power for display systems.
• Digital Photo Frames: Provides consistent voltage to protect image quality and user experience.
• Set-Top Boxes & Modems: Supports reliable, continuous power delivery.
• Networking & Telecom Equipment: Optimized for performance-critical, always-on applications.

For example, in digital photo frames where a stable 5V output and a small 10mA current draw are typical, the LM2596S-5.0 offers more than enough headroom and efficiency to meet performance needs while minimizing heat and power loss.

Sarc Microelectronics also offers a wide portfolio of reliable DC-DC converters to suit diverse requirements, including:

• Fixed Output Models: LM2575S-3.3, LM2576S-3.3, LM2596S-12
• Adjustable Output Models: LM2596SX-ADJ, LM2577S-ADJ, SL2733, MC34063

These products are trusted for their quality, efficiency, and performance across consumer electronics, industrial systems, and IoT devices worldwide.

About Slkor

Shenzhen Slkor Micro Semicon Co., Ltd. is a fast-growing semiconductor company backed by a world-class R&D team from Tsinghua University (China) and Yonsei University (South Korea). We specialize in cutting-edge third-generation SiC power devices as well as a broad range of traditional semiconductor products, including diodes, transistors, power devices, power management ICs, and analog chips.

Founded as an IP design house, and now recognized as a national high-tech enterprise, Slkor has rapidly evolved under the visionary leadership of CEO Mr. Song Shiqiang. Today, we handle everything from independent R&D and production to global sales and technical support.

At Slkor, we focus on innovation, performance, and affordability — offering high-quality domestic alternatives to internationally recognized semiconductor brands. Our components are widely used in industrial control, consumer electronics, communication systems, and automotive applications.

To serve our global clients better, we operate two flagship stores in Huaqiangbei, the heart of Shenzhen and one of the world’s largest electronics markets.

📩 For business inquiries: Sales03@slkormicro.com