The ON Semiconductor LM2576D2T-5 is a highly efficient, monolithic integrated circuit designed for voltage regulation. It is a step-down voltage regulator that offers all the functions needed to implement a buck (step-down) switching regulator, providing a compact solution for power supply design. This device is capable of driving a 3A load with excellent line and load regulation.

Key Features

• Output Voltage: 5V fixed output voltage.
• Output Current: Capable of delivering up to 3A of continuous output current.
• High Efficiency: Utilizes a simple external inductor and diode to deliver high efficiency, which can be up to 92% depending on the input and output voltages.
• Thermal Shutdown and Current Limit: Inbuilt thermal shutdown and current limit features protect the device and the load from damage due to excessive power dissipation and overcurrent conditions.
• Simple Design: Requires minimal external components for a typical application, which reduces overall design complexity and board space.
• Wide Input Voltage Range: Can handle input voltages from 4V to 40V, making it versatile for various applications.
• 52 kHz Fixed Frequency Internal Oscillator: The fixed frequency oscillator reduces the need for external tuning components and simplifies the design.
• Package: TO-263 package provides a compact footprint and is easy to mount on a printed circuit board.

Applications

The LM2576D2T-5 is suitable for a wide range 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.
• Positive to negative converter (Buck-Boost).

The ON Semiconductor LM2576D2T-5 voltage regulator is an ideal choice for designers looking for a low component count, high performance solution for power supply designs in consumer, industrial, and telecommunications equipment.