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The corresponding schematic diagram:
The LM2596 regulator is a monolithic integrated circuit ideally suited for easy and convenient
design of a step−down switching regulator (buck converter). It is capable of driving a 3.0A
load with excellent line and load regulation. 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. It
is available in a standard 5−lead TO−220 package with several different lead bend options,
and D2PAK surface mount package.
Features
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Fixed Output Voltage: 5V
•
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, typically 80 μA
•
Thermal Shutdown and Current Limit Protection
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