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LM3940S Datasheet(PDF) 1 Page - List of Unclassifed Manufacturers |
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LM3940S Datasheet(HTML) 1 Page - List of Unclassifed Manufacturers |
1 / 3 page Bay Linear, Inc 2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 989-7144, Fax: (925) 940-9556 www.baylinear.com 1.25A High Current Low Dropout LM3940 Voltage Regulator for Convert 5V & 3.3V Pin Connection Ordering Information Devices Package Temp. LM3940T TO-220-3 -40 °C to 125 °C LM3940S TO-263-3 -40 °C to 125 °C LM3940D TO-252 -40 °C to 125 °C LM3940N SOT-223-3 -40 °C to 125 °C LM3940J LPDD-3 -40 °C to 125 °C XX=Output Voltage Description The Bay Linear LM3940 is a 1.25A high accuracy, low dropout voltage regulator with only 40mV at light loads and 350mV(Typ.)@ 1.0A) and low quiescent current of 240 µA typical. The LM3940 is designed for low voltage a application that requires lower dropout voltage and faster transient response. This device is an excellent choice for use in powering low voltage applications where require a lower dropout, faster transient response to regulate from +2.5V to 3.8V supplies and as a post regulator for switching supplies applications. The LM3940 offers full protection against over-current faults, reversed input polarity, reversed load insertion, and positive and negative transient voltage. On-Chip trimming adjusts the reference voltage to 1%. The LM3940 are offered in a 3-pin SOT-223, TO-220 & TO-263 package compatible with other 3 terminal regulators. The LM3940 is also offer in a new LPDD (Low Profile TO-263) package from 4.47 mm (DD) tickness down to only 1.27 mm (LPDD) total tickness. Features • High output accuracy of 1% • Fix Output 5.0v & 3.3V • Output Current of 1.25A • Low Dropout Voltage • Low quiescent current • Extremely Tight Load & Line Regulation • Reverse-battery and “Load Dump” Protection • Zero Current Shutdown Mode (5-pin version) • Offer in TO-263, TO-252, TO-220, SOT-223, & New Slim LPDD • Similar to industry Standard LM3940 Applications • Powering VGA & Sound Card • LCD Monitor • Battery Powered Equipments/Laptop & Notebook • SMPS Post Regulator / DC to DC Modules • High Efficiency Linear Power Supply • Adjustable Power Supply • Bar Code Scanners Bay Linear Inspire the Linear Power |
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