ONLM2574N-5G
Overview
The LM2574N-5G is a monolithic step-down switching regulator providing a fixed 5V output at up to 500mA. It belongs to the Simple Switcher family, designed to significantly reduce the external component count and simplify power supply design by requiring only four external parts. This through-hole version is particularly well-suited for prototyping and internal power rails on dual-layer PCBs.
Why Choose This Part
The integrated 52kHz oscillator and internal compensation minimize the design effort and board space. Its 8-DIP package allows for easy manual soldering and testing in harsh environments where surface-mount components might be difficult to rework. The device also features thermal shutdown and current limit protection for enhanced system reliability.
Applications
Key Specifications
Getting Started
To implement a basic 5V buck converter, you will need a 22uH to 680uH inductor (depending on input voltage), a 1N5817 or similar Schottky diode, and input/output electrolytic capacitors. Ensure the input capacitor is placed as close as possible to the Vin and Ground pins to minimize switching noise. Evaluation can be performed on standard breadboards or prototyping boards due to the 0.1 inch pin spacing.
