LM2596 Adjustable 3A Step-Down Voltage Regulator – Datasheet

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The LM2596 regulator is a monolithic integrated circuit that provides all the active functions for a step-down (buck) switching regulator, capable of driving a 3A load with excellent line and load regulation. This device is available in fixed output voltages of 3.3V, 5V, 12V, and an adjustable output version.
Requiring a minimum number of external components, the regulator is simple to use and includes internal frequency compensation† and a fixed-frequency oscillator.

The LM2596 operates at a switching frequency of 150 kHz thus allowing smaller-sized filter components than what would be needed with lower frequency switching regulators. Available in a standard 5-lead TO-220 package with several different lead bend options, and a 5-lead TO-263 surface mount package

LM2596 Pinout

LM2596 Pin Configuration

Pin NoPin NameDescription
1VinInput Voltage Pin
2OUTOutput Pin
3GNDGround Pin
4FBFeedBack Pin
5ON’/OFFComplement ON/Off Pin

LM2596 Key Features

  • Available in TO-220 and TO-263 packages
  • Guaranteed 3A output load current
  • Input voltage range up to 40V
  • Requires only 4 external components
  • Excellent line and load regulation specifications
  • 150 kHz fixed-frequency internal oscillator
  • TTL shutdown capability
  • Low power standby mode, IQ typically 80 µA
  • High efficiency
  • Uses readily available standard inductors
  • Thermal shutdown and current limit protection

Application

  • Simple high-efficiency step-down (buck) regulator
  • On-card switching regulators
  • Positive to negative converter

You can download this datasheet for LM2596 Adjustable 3A Step-Down Voltage Regulator – Datasheet from the link given below: