Professional IC Distribution & Technical Solutions

The LM2576S-12 is a step-down (buck) switching voltage regulator manufactured by Texas Instruments (TI). Below are its factual specifications, descriptions, and features:

Specifications:

• Output Voltage: Fixed 12V
• Input Voltage Range: 4.75V to 40V
• Output Current: Up to 3A
• Switching Frequency: 52kHz (typical)
• Efficiency: Up to 88% (depending on conditions)
• Operating Junction Temperature: -40°C to +125°C
• Package: TO-263-5 (D2PAK)
• Regulation Type: PWM (Pulse Width Modulation)
• Protection Features: Thermal shutdown, current limit

Descriptions:

The LM2576S-12 is a monolithic integrated circuit that provides all active functions for a step-down switching regulator. It is designed for easy implementation in applications requiring efficient power conversion with minimal external components. The fixed 12V output version eliminates the need for external feedback resistors.

Features:

• Simple and easy-to-use buck regulator
• Requires only 4 external components
• Internally compensated
• Low power standby mode (IQ ≈ 50µA)
• High efficiency compared to linear regulators
• Wide input voltage range
• Thermal shutdown and current limit protection

This regulator is commonly used in power supplies, industrial controls, automotive systems, and battery chargers.

(Note: Always refer to the official TI datasheet for detailed electrical characteristics and application guidelines.)