LM2596S 3.3V Fixed Step-Down Switching Regulator IC – 3A – TO263-5

The LM2596S 3.3V Fixed Step-Down Switching Regulator IC is a high-efficiency monolithic buck regulator designed to deliver a stable 3.3V output at currents up to 3A. With an input voltage range of 5V to 40V, this device provides excellent line and load regulation, making it suitable for a wide range of power supply applications.

Operating at a fixed 150 kHz switching frequency, the LM2596S enables the use of smaller external components compared to low-frequency regulators, reducing overall PCB space. Its simple design requires minimal external components thanks to built-in frequency compensation and an internal fixed-frequency oscillator.

Integrated thermal shutdown and current limit protection ensure safe and reliable operation, even under heavy load or fault conditions. Packaged in a compact TO263-5 surface-mount package, this regulator is ideal for DC-DC conversions in embedded systems, industrial power supplies, battery-powered equipment, and general electronics.

Key Specifications:

• Part Number: LM2596S-3.3

• Package: TO263-5

• Output Voltage: 3.3V (fixed)

• Output Current: Up to 3A

• Input Voltage Range: 5V to 40V

• Efficiency: Up to 80%

• Switching Frequency: 150 kHz

• Internal frequency compensation

• Thermal shutdown & current limit protection

Package Includes:
1 x LM2596S 3.3V Fixed Step-Down Switching Regulator IC

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