Regulador Switching Lm2596 Lm2596s-adj Step Down 3a Itytarg

The LM2596 regulator is monolithic integrated circuit ideally suited

for easy and convenient design of a step−down switching regulator

(buck converter). It is capable of driving a 3.0 A load with excellent

line and load regulation. This device is available in adjustable output

version and it is internally compensated to minimize the number of

external components to simplify the power supply design.

Since LM2596 converter is a switch−mode power supply, its

efficiency is significantly higher in comparison with popular

three−terminal linear regulators, especially with higher input voltages.

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

D2PAK surface mount package.

The other features include a guaranteed 4% tolerance on output

voltage within specified input voltages and output load conditions, and

15% on the oscillator frequency. External shutdown is included,

featuring 80 A (typical) standby current. Self protection features

include switch cycle−by−cycle current limit for the output switch, as

well as thermal shutdown for complete protection under fault

Features

• Adjustable Output Voltage Range 1.23 V − 37 V

• Guaranteed 3.0 A Output Load Current

• Wide Input Voltage Range up to 40 V

• 150 kHz Fixed Frequency Internal Oscillator

• TTL Shutdown Capability

• Low Power Standby Mode, typ 80 A

• Thermal Shutdown and Current Limit Protection

• Internal Loop Compensation

• Moisture Sensitivity Level (MSL) Equals 1

• Pb−Free Packages are Available

Applications

• 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