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LM2596R 5.0 - 5V 3A 150kHz Fixed Output Step-Down Switching Regulator TO-263

LM2596R 5.0 - 5V 3A 150kHz Fixed Output Step-Down Switching Regulator TO-263

SKU SKU Code: # LL62

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The LM2596 5.0V Step-Down Regulator is a switching step-down (buck) converter. The LM2596 series of regulators are monolithic integrated circuits ideally suited for the easy and convenient design of a step-down switching regulator (buck converter). All circuits of this series are capable of driving a 3.0A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5.0V,12V, and an adjustable output version. These regulators were designed to minimize the number of external components to simplify the power supply design.


  • 5.0V Fixed Output version
  • ±4% Max. Over Line and Load conditions
  • Guaranteed Output Current of 3A
  • Available in TO-263, TO-220 Packages
  • Requires Only 4 External Components
  • Excellent Line and Load Regulation Specifications
  • 150kHz Fixed Frequency Internal Oscillator
  • TTL Shutdown Capability
  • Low Power Standby Mode, IQ typically 100mA
  • Thermal Shutdown and Current Limit Protection
  • Moisture Sensitivity Level 3


  • Simple High-Efficiency Step-Down(Buck) Regulator
  • Efficient Pre-Regulator for Linear Regulators
  • On-Card Switching Regulators
  • Positive to Negative Converter(Buck-Boost)
  • Negative Step-Up Converters
  • Power Supply for Battery Chargers
Input Voltage 4.5V-40V DC
Rated Current 0.2-3A
Efficiency 80%
Number of Pins 5
Fixed Output Voltage 5V
Switching Frequency 150 kHz
Package TO-263(S)
Mounting Type SMD