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Details, datasheet, quote on part number: LM2940-5.0
 
 
Part numberLM2940-5.0
CategoryPower Management => Regulators => Linear Voltage Regulators => LDO (Low Drop Out) => Positive Voltage->Fixed
TitlePositive Voltage->Fixed
DescriptionLM2940 - 1A Low Dropout Regulator, Package: SOT-223, Pin Nb=4
CompanyNational Semiconductor Corporation
DatasheetDownload LM2940-5.0 datasheet
Request For QuoteFind where to buy LM2940-5.0
 


 
Specifications, Features, Applications

The LM2940/LM2940C positive voltage regulator features the ability to source 1A of output current with a dropout voltage of typically 0.5V and a maximum of 1V over the entire temperature range. Furthermore, a quiescent current reduction circuit has been included which reduces the ground current when the differential between the input voltage and the output voltage exceeds approximately 3V. The quiescent current with 1A of output current and an inputoutput differential 5V is therefore only 30 mA. Higher quiescent currents only exist when the regulator is in the dropout mode (VIN - VOUT 3V). Designed also for vehicular applications, the LM2940/ LM2940C and all regulated circuitry are protected from reverse battery installations or 2-battery jumps. During line transients, such as load dump when the input voltage can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to protect both the internal circuits and the load. The LM2940/ LM2940C cannot be harmed by temporary mirror-image insertion. Familiar regulator features such as short circuit and thermal overload protection are also provided.

Features

Dropout voltage typically 0.5V @IO = 1A Output current in excess of 1A Output voltage trimmed before assembly Reverse battery protection Internal short circuit current limit Mirror image insertion protection P+ Product Enhancement tested

*Required if regulator is located far from power supply filter. **COUT must be at least F to maintain stability. May be increased without bound to maintain regulation during transients. Locate as close as possible to the regulator. This capacitor must be rated over the same operating temperature range as the regulator and the ESR is critical; see curve.

Temperature Range TJ 125C Output Voltage LM2940CS-15 LM2940LD-15 Package TO-220 TO-263 LLP 1k Units Tape and Reel LLP 4.5k Units Tape and Reel SOT-223 in Tape and Reel

The physical size of the SOT-223 is too small to contain the full device part number. The package markings indicated are what will appear on the actual device.

For information on military temperature range products, please go to the Mil/Aero Web Site at http://www.national.com/appinfo/milaero/index.html.

Front View Order Number or LM2940T-12 See NS Package Number TO3B 16-Lead Dual-in-Line Package (J)
Front View Order Part Number or LM2940IMP-15 See NS Package Number MP04A
Side View Order Number or LM2940S-12 See NS Package Number TS3B
Pin 2 and pin 7 are fused to center DAP Pin 5 ans 6 need to be tied together on PCB board



Related products with the same datasheet
5962-9088401QEA   5962-9088401QXA   5962-9088501QEA   5962-9088501QXA   LM2940   LM2940-10  
LM2940-12   LM2940-12/883   LM2940-5.0/883   LM2940-8.0   LM2940-8.0/883  


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