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LM2575S Datasheet(PDF) 1 Page - Semtech Corporation |
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LM2575S Datasheet(HTML) 1 Page - Semtech Corporation |
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1 / 19 page  1 www.semtech.com LM2575 & LM2576 1A & 3A Miniconverter Switching Regulators POWER MANAGEMENT Revision 1, January 2001 u Pin for pin replacement for Nationals LM2575/6 series u DC-to-DC buck or buck/boost converter requiring only 4 support components u Fixed or adjustable voltages u Preset output voltages of 3.3V, 5V and 12V u Wide output voltage range, 1.23V to 35V u 82% typical efficiency @ 5V out u Wide input voltage range, 4V to 40V u Inhibit/enable control pin u Industrial temperature range u TO-220 and TO-263 packages The LM2575/6 series switching regulators are monolithic integrated circuits designed for use in buck or buck/ boost regulator applications requiring accurate output voltages over combined variations of line, load and temperature. This unique series greatly simplifies switching power supply design. The LM2575 has a maximum output current of 1A and the LM2576 is rated for 3A. The LM2575/6 series miniconverters include a switching regulator and compensation network all within the same package. Just add a choke, catch diode and two capacitors to obtain an efficient DC-to-DC converter. The current limit and thermal shutdown features of the LM2575/6 series fully protect the device against overstress conditions. The LM2575/6 series offers an alternative to popular 3 terminal linear regulators by providing higher efficiency with reduced heatsink size. In many applications a heat sink will not be required. u Micro controller power supplies u Medical equipment u Industrial power supplies u Instrumentation power supplies Description Features Applications Typical Application Circuits 5 7 5 2 M L6 7 5 2 M L L 1 H µ 0 3 3H µ 0 0 1 D 1 A 3A 7 C N I F µ 8 6F µ 0 2 1 C T U O F µ 0 3 3F µ 0 0 0 , 1 |
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