The LM2596 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 3A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, and an adjustable output version.

Features

•     3.3V, 5V, 12V, and Adjustable Output Versions
•     Adjustable Version Output Voltage Range, 1.2V to 37V ±4% Max Over Line and Load Conditions
•     Available in TO-220 and TO-263 Packages
•     Ensured 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

• Type    Step-Down (Buck)
• Output Type    Adjustable
• Number of Outputs    1
• Voltage - Output    12V
• Voltage - Input    4.5 V ~ 40 V
• PWM Type    -
• Frequency - Switching    150kHz
• Current - Output    3A
• Synchronous Rectifier    No
• Operating Temperature    -40°C ~ 125°C
• Mounting Type    Surface Mount
• Package / Case    TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
• Supplier Device Package    DDPAK/TO-263-5