Home > Industry Information > LM2596T-5.0/LF03
The LM2596T-5.0/LF03 is a monolithic integrated circuit from Texas Instruments' SIMPLE SWITCHER® series, providing a complete 3A step-down (buck) switching regulator with a fixed 5V output. This device requires minimal external components—typically only an inductor, input/output capacitors, and a catch diode—simplifying power supply design while delivering excellent line and load regulation. With a wide input voltage range of 4.5V to 40V and built-in protection features, it is ideal for industrial controls, distributed power systems, and battery chargers requiring reliable, efficient power conversion.
Category:Integrated Circuits (ICs);Power Management (PMIC);Voltage Regulators - DC DC Switching Regulators
Mfr:Texas Instruments
Series:SIMPLE SWITCHER®
Packaging:Tube
Part Status:Active
Topology:Buck
Output Type:Fixed
Number of Outputs:1
Voltage - Input (Min):4.5V
Voltage - Input (Max):40V
Voltage - Output (Min/Fixed):5V
Current - Output:3A
Frequency - Switching:150kHz
Operating Temperature:-40°C ~ 125°C (TJ)
Mounting Type:Through Hole
Package / Case:TO-220-5 Formed Leads
Supplier Device Package:TO-220-5
Base Product Number:LM2596
Simple Design: Requires only four external components, significantly reducing design time and PCB complexity.
Wide Input Voltage Range: Operates from 4.5V to 40V, accommodating a variety of unregulated power sources including AC rectified and battery inputs.
High Output Current: Delivers up to 3A continuous output current, suitable for powering logic circuits, sensors, and small motors.
Fixed 5V Output: Provides a stable, regulated 5V supply ideal for microcontroller systems, TTL logic, and USB power applications.
150kHz Fixed Switching Frequency: Minimizes external component size while avoiding interference with sensitive audio and RF circuits.
Excellent Line and Load Regulation: Maintains output voltage stability across varying input voltages and load conditions.
Comprehensive Protection: Features thermal shutdown and current limiting for robust operation under fault conditions.
Through-Hole Package: TO-220 package with formed leads enables easy prototyping and manual assembly while providing excellent thermal dissipation.
Industrial Control Systems: Provides regulated 5V for PLCs, sensor interfaces, microcontrollers, and control logic in factory automation equipment.
Battery Chargers: Steps down higher input voltages to regulated 5V for charging batteries in portable instruments and backup systems.
Distributed Power Architectures: Serves as a point-of-load regulator in systems with 12V, 24V, or 36V intermediate buses, converting to 5V for local circuits.
Test and Measurement Equipment: Powers digital logic, displays, and interface circuits in oscilloscopes, multimeters, and signal generators.
Telecommunications Equipment: Supplies regulated 5V for control logic, interface circuits, and auxiliary systems in base stations and network gear.
Consumer Electronics: Used in set-top boxes, gaming consoles, and home appliances requiring efficient 5V power from higher-voltage supplies.
Automotive Electronics: Provides regulated 5V for sensors, microcontrollers, and infotainment systems in 12V/24V vehicle electrical systems (with appropriate input protection).
The Texas Instruments LM2596T-5.0/LF03 is a proven, reliable SIMPLE SWITCHER® buck regulator that combines 3A output capability, wide 4.5V-40V input range, and fixed 5V output in a through-hole TO-220 package. Its minimal external component requirements, comprehensive protection features, and excellent regulation make it an ideal choice for industrial controls, distributed power systems, battery chargers, and consumer applications requiring efficient, easy-to-design step-down conversion with robust performance.
Industry Information
