LM2576SX-12-JSM

The LM2575SX/T-LM2576SX/T series switching regulators are monolithicintegrated circuits designed for use in “buck" or "buck/boost" regulator applications requiring accurate outputvoltages over combined variation S of line, load andtemperature. This unique series greatly simplifiesswitching power supply design. The LM2575 has amaximum output current of 1A and the LM2576 is ratedfor 3A. The LM2575SX/T-LM2576SX/T series miniconverters include aswitching regulator and compensation network all withinthe same package. Just add a choke, catch diode andtwo capacitors to obtain an efficient DC-to-DC converter.The current limit and thermal shutdown features of the LM2575SX/T-LM2576SX/T series fully protect the device againstoverstress conditions. The LM2575SX/T-LM2576SX/T series offers an alternative to popular 3terminal linear regulators by providing higher efficiencywith reduced heatsink size. In many applications a heatsink will not be required.

Applications

• Micro controller power supplies
• Medical equipment
• Industrial power supplies
• Instrumentation power supplies

Key features

• Pin for pin replacement for National's LM2575S/6S series
• DC-to-DC buck or buck/boost converter requiring only 4 support components
• Fixed or adjustable voltages
• Preset output voltages of 3.3V, 5V and 12V
• Wide output voltage range, 1.23V to 35V
• 82% typical efficiency @ 5V out
• Wide input voltage range, 4V to 40V
• Inhibit/enable control pin
• Industrial temperature range
• T0-220 and T0-263 packages