ON Semiconductor LM2575T-3.3G Voltage Regulator

The ON Semiconductor LM2575T-3.3G is a highly efficient, monolithic integrated circuit designed for voltage regulation purposes. It provides all the active functions required for a step-down (buck) switching regulator capable of driving a 1A load with excellent line and load regulation. This voltage regulator is particularly suitable for simple, high-efficiency power supplies, offering a fixed output voltage of 3.3V, which is often used in digital systems like microcontrollers and digital logic.

Key Features

• Output Voltage: Provides a precise 3.3V fixed output, which is essential for sensitive electronics that require a stable voltage supply.
• Current Output: Capable of delivering up to 1A of load current, making it suitable for a wide range of applications.
• High Efficiency: The device's switch-mode design ensures high efficiency, which is crucial for reducing heat dissipation and improving system reliability.
• Thermal Shutdown and Current Limit: Integrated protection features guard against over-current and over-temperature conditions, enhancing the safety and durability of the device.
• 52 kHz Fixed Frequency Internal Oscillator: The fixed frequency simplifies the design of the external components, providing a stable operation across different conditions.
• Simple and High-Efficiency Design: Requires minimal external components, facilitating ease of design and quick implementation.

Applications

The LM2575T-3.3G is versatile and can be used in a variety of applications, including:

• Simple high-efficiency step-down (buck) regulators
• Efficient pre-regulators for linear regulators
• On-card switching regulators for elimination of noise and distribution problems associated with single-point regulation
• Adjustable power supplies
• Battery chargers

The LM2575T-3.3G from ON Semiconductor is an ideal choice for designers looking for a robust and reliable voltage regulator that combines ease of use with high performance. Its fixed 3.3V output, ability to handle up to 1A of load current, and integrated safety features make it a go-to component for a wide range of power supply applications.