The LM2593HVT-3.3/NOPB from Texas Instruments is a highly efficient, monolithic integrated circuit for voltage regulation, specifically designed to deliver a constant 3.3V output from a variable input voltage. This step-down voltage regulator is part of the LM2593 series, which is well-regarded for its robustness and reliability in a wide array of electronic applications.

Key Features

• Output Voltage: The device provides a fixed output voltage of 3.3V, which is ideal for logic level power supplies and other 3.3V based electronics.
• High Efficiency: With its integrated switch, the LM2593HVT-3.3/NOPB is capable of delivering efficiencies of up to 77%, which is beneficial for reducing heat and improving system performance.
• Output Current: It is capable of driving a load with up to 3A of current, making it suitable for a range of power-hungry applications.
• Wide Input Voltage Range: The regulator can handle an input voltage range from 4.5V to 40V, providing flexibility in various power supply scenarios.
• Thermal Shutdown and Current Limit Protection: The device includes built-in thermal shutdown and current limit features to protect against overcurrent and overheating conditions.
• Adjustable Switching Frequency: The LM2593HVT-3.3/NOPB allows the user to set the switching frequency anywhere between 150 kHz and 1.5 MHz with a single external resistor.
• Simplified Design: Its simple external components requirement makes it easy to design with, reducing time to market.
• Package: The regulator is available in a thermally enhanced TO-220 package, which assists in heat dissipation for reliable operation even under high load conditions.

Applications

The LM2593HVT-3.3/NOPB is versatile and can be used in a variety of applications, including but not limited to:

• Simple high-efficiency step-down (buck) regulators
• Efficient pre-regulators for linear regulators
• On-card switching regulators
• Positive to negative converter (Buck-Boost)

Environmental and Quality Certifications

The device is compliant with the RoHS directive, which restricts the use of certain hazardous substances in electronic equipment. Additionally, the NOPB designation indicates that the product is lead-free and is designed for optimal environmental safety.