TEXAS INSTRUMENTS LM2574M-5.0/NOPB Buck Switching Regulator, 5V 500mA, SOIC-14

The TEXAS INSTRUMENTS LM2574M-5.0/NOPB is a step-down (buck) switching regulator that delivers a fixed 5V output with a maximum current of 500mA. It provides all the active functions required for a buck converter, ensuring excellent line and load regulation while requiring only four external components, making it simple to integrate into your power supply designs.

This regulator operates with a fixed switching frequency of 52kHz and includes internal frequency compensation and a fixed-frequency oscillator, simplifying the design process. It offers a high-efficiency alternative to traditional three-terminal linear regulators, and thanks to its high efficiency, the copper traces on the PCB often suffice as heat sinking, reducing the need for additional thermal management components.

Key Features

• TTL shutdown capability for power management control
• Low-power standby mode to minimise energy consumption
• High efficiency for reduced power loss
• Uses readily available standard inductors for design flexibility
• Thermal shutdown and current-limit protection for enhanced reliability
• Green product – free from antimony (Sb) and bromine (Br)
• ±4% output voltage tolerance and ±10% oscillator frequency tolerance

Applications

This IC is well-suited for industrial and general power management applications, providing a robust, high-performance solution for a wide range of electronic devices.

Specifications

• Output Type: Fixed
• Topology: Buck (Step-Down)
• Input Voltage Range: 4V to 40V
• Output Voltage: 5V
• Max Output Current: 500mA
• Switching Frequency: 52kHz
• IC Package: SOIC-14 (14 pins)
• Operating Temperature Range: Up to 125°C