The LM2596S is a monolithic integrated circuit designed for step-down (buck) voltage regulation applications. This version provides a fixed 3.3V output and can deliver up to 3A of continuous load current. With internal thermal shutdown, current limit protection, and high efficiency, it is widely used in power supply circuits for microcontrollers, embedded systems, and communication devices. The compact TO-263-5 surface-mount package makes it suitable for space-constrained designs.
Features of LM2596S – 3.3V Fixed Switching Regulator IC:
Fixed 3.3V output for regulated power supply
Up to 3A continuous output current
High efficiency up to 75–90%
Requires only a few external components
Built-in thermal shutdown and current limit protection
Switching frequency: 150 kHz (typical)
Ideal for battery-powered and embedded systems
Specifications of LM2596S – 3.3V Regulator IC:
Model: LM2596S-3.3
Output Voltage: 3.3V (fixed)
Output Current: 3A (maximum)
Input Voltage Range: 4.5V to 40V
Efficiency: Up to 90%
Switching Frequency: 150 kHz
Package: TO-263-5 – SMD
Operating Temperature Range: -40°C to +125C