LM317BT DATASHEET PDF

LMBT datasheet, LMBT pdf, LMBT data sheet, datasheet, data sheet, pdf, Motorola, Three-terminal adjustible output positive voltage regulator. LM, LM Datasheet .. LMBT. LM, LM . The part number LM has been moved to a separate datasheet. Removed TO LMBT datasheet, LMBT circuit, LMBT data sheet: ONSEMI – A Adjustable Output, Positive Voltage Regulator,alldatasheet, datasheet, Datasheet.

Author: Kazilkree Kajishakar
Country: Sierra Leone
Language: English (Spanish)
Genre: Spiritual
Published (Last): 10 March 2005
Pages: 120
PDF File Size: 15.86 Mb
ePub File Size: 1.82 Mb
ISBN: 274-6-90149-396-4
Downloads: 73354
Price: Free* [*Free Regsitration Required]
Uploader: Mezikora

This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage. Because of this, the error term in the datasheer cannot be ignored and the value of the low-side resistor becomes more critical. The mechanism used is similar enough that a voltage divider can be used in the same datasheft as with the LM and the output follows the same formula, lm317br the regulator’s fixed voltage for V ref e.

For large voltage differences, the energy lost as heat can ultimately be greater than that provided to the circuit. The LM is an adjustable analogue to the popular 78xx fixed regulators.

It was designed by Robert “Bob” Pease. If the adjustment pin is connected to ground the output pin delivers a regulated voltage of 1. Retrieved 31 March The LM negative complement to the LM regulates voltages below, rather than above, the reference. Archived from the original PDF on 31 March Three-terminal adjustible output positive voltage regulator. Three-terminal positive voltage regulator.

Floating Operation for High Voltage Applications 7. Archived from the original PDF on 18 April lm371bt This page was ln317bt edited on 6 Julyat The LM relates in the same way to the fixed 79xx regulators.

  BRET HARTE THE OUTCASTS OF POKER FLAT PDF

Higher regulated voltages are obtained by connecting the adjustment pin to a resistive voltage divider between the output and ground. In packages with a heat-dissipating mounting tab, such as TOthe tab is connected internally to the output pin which may make it necessary to electrically isolate the tab or the heat sink from other parts of the application circuit.

By using this site, you agree to the Lmm317bt of Use and Privacy Policy.

Like the LM, each of the datashest regulators is designed to adjust the output voltage until it is some fixed voltage above the adjustment pin which in this case is labelled ” ground “. Retrieved from ” https: The alternative is to use a switching voltage regulator which is usually more efficient but has a larger footprint and requires a larger number of associated components.

Accidenti come scotta questo transistor. From Wikipedia, the free encyclopedia. Linear integrated circuits Voltage regulation.

LMBT Datasheet(PDF) – ON Semiconductor

Wikimedia Commons has media related to LM and Voltage regulator circuits. The LM has three pins: Further, it employs internal current limiting, thermal shutdown and safe area compensation, making it essentially blow—out proof.

Failure to do this may cause the circuit to short. The output current is that resulting from dropping the reference voltage across the resistor. The LM is a popular adjustable positive linear voltage regulator. This is the trade-off for using linear regulators which are a simple way to provide a stable voltage with few additional components. Daatsheet other projects Wikimedia Commons.

  FUNDAMENTOS DE CONTABILIDAD DE COSTOS HUMBERTO VARAS PDF

LM317BT Datasheet

Because some quiescent current flows from the adjustment pin of the device, an error term is added:. In datxsheet an LM commonly requires a heat sink to prevent the operating temperature rising too high. Three Terminal Positive Voltage Regulator. However, the 78xx device’s quiescent current is substantially higher and less stable. The LM is an adjustable 3—terminal positive voltage regulator capable of supplying in excess of 1.

The LM serves a wide variety of applications including local, lm317bg card regulation. Eliminates Stocking many Fixed Voltages.

Output Transistor Safe—Area Datasheef 6. Output Current in Excess of 1. The LM is designed to compensate for these fluctuations internally, making such measures unnecessary.

How the adjustment pin is connected determines the output voltage as follows. Views Read Edit View history. Output Adjustable between 1. The device can be configured to regulate the current to a load, rather than the voltage, by replacing the lm17bt resistor of the divider with the load itself. Linear regulators inherently waste power, the power dissipated is the current passed multiplied by the voltage difference between input and output.

Three-Terminal Positive Voltage Regulator. Archived from the original on 17 December Internal Thermal Overload Protection 4. This device can also be used to make a programmable output regulator, or by connecting datasjeet fixed resistor between the adjustment and output, the LM can be used as a precision current regulator.