The LM2575HVR-12 is a monolithic integrated circuit that provides all the active functions for a step-down (buck) switching regulator. This regulator is capable of driving a 1A load with excellent line and load regulation. The device is available in fixed output voltage of 12V. The LM2575HVR-12 series offers a high-efficiency replacement for popular three-terminal linear regulators.

Applications:

• Simple High-Efficiency Step-Down (Buck) Regulator
• Efficient Pre-Regulator for Linear Regulators
• Battery Charger

Features:

• 3.3V, 5V, 12V, and Adjustable Output Versions
• Adjustable Version Output Voltage Range, 1.23V to 37V ±4%
• Guaranteed 1A Output Current
• Wide Input Voltage Range Up to 60V
• Requires Only 4 External Components
• 52 kHz Fixed Frequency Internal Oscillator
• TTL Shutdown Capability, Low Power Standby Mode
• High Efficiency
• Uses Readily Available Standard Inductors
• Thermal Shutdown and Current Limit Protection

Benefits:

• Simplified design process, reducing the number of external components required
• High efficiency operation reduces power dissipation, minimizing the need for heat sinking
• Robust protection features enhance system reliability
• Wide input voltage range allows for use in a variety of power supply configurations

Additional Details:

The LM2575HVR-12 operates at a fixed switching frequency of 52 kHz, providing both high efficiency and low ripple. It incorporates internal compensation, simplifying design and minimizing the number of external components. The device includes thermal shutdown and current limit protection to prevent damage due to overloads or short circuits.