ON Semiconductor LM2576T-5.0 Voltage Regulator

The LM2576T-5.0 from ON Semiconductor is a highly efficient, monolithic integrated circuit designed for voltage regulation and step-down conversion. This robust component is part of the LM2576 series, which is known for its ease of use and versatility in a wide array of power conditioning applications.

This regulator provides all the active functions necessary for a step-down (buck) switching regulator capable of driving a 3A load with excellent line and load regulation. The fixed output voltage version, 5.0V, simplifies the design process by eliminating the need for external resistors to set the output voltage level.

The LM2576T-5.0 operates at a switching frequency of 52kHz, which allows for smaller-sized filter components, resulting in a compact power supply design. With its thermal shutdown and current limit protection features, it ensures reliable operation even under fault conditions. The regulator's high efficiency is maintained over a wide range of operating conditions, thanks to its use of a simple pulse-width modulation (PWM) control scheme and ON Semiconductor's optimized processes.

Key features of the LM2576T-5.0 include:

• Guaranteed 3A output load current
• Fixed 5V output voltage with a precision of ±4%
• 52kHz fixed frequency internal oscillator
• TTL shutdown capability, allowing for low power standby modes
• Thermal overload protection
• High efficiency with the use of an LM2576-5.0 simple switcher concept
• Available in TO-220 package, suitable for through-hole mounting

The LM2576T-5.0 is a versatile solution for a variety of applications, including simple high-efficiency step-down regulators, efficient pre-regulators for linear regulators, on-card switching regulators, and positive to negative converter (Buck-Boost). With its straightforward design and ON Semiconductor's commitment to quality, the LM2576T-5.0 is an excellent choice for designers looking for a reliable and efficient voltage regulation solution.