LM2596 Adjustable 3A Step-Down Voltage Regulator – Datasheet

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 No	Pin Name	Description
1	Vin	Input Voltage Pin
2	OUT	Output Pin
3	GND	Ground Pin
4	FB	FeedBack Pin
5	ON’/OFF	Complement 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: