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.

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This device can also be used to make a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the LM can be used as a precision current regulator.

LMBT Datasheet, LMBT PDF, Pinouts, Circuit – Motorola => Freescale

This page was last edited on 6 Julyat However, the 78xx device’s quiescent current is substantially higher and less stable. The LM has three pins: Archived from the original on 17 December Output Datashet between 1.

Eliminates Stocking many Fixed Voltages. Three-terminal adjustible output positive voltage regulator.

From Wikipedia, the free encyclopedia. In use an LM commonly requires a heat sink to prevent the operating temperature rising too high. Because some quiescent current flows from the adjustment pin of the device, an error term is added:. This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage.

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Archived from the original PDF on 18 April The LM is an adjustable 3—terminal positive voltage regulator capable of supplying in excess of 1. The output current is that resulting from dropping the reference voltage across the resistor. For large voltage differences, the energy lost as heat can ultimately be greater than that provided to the circuit.

The device can be configured to regulate the current to a load, rather than the voltage, by replacing the low-side resistor of the divider with the load itself. Views Read Edit View history. The mechanism used is similar enough that a voltage divider can be used in the same way as with the LM and the output follows the same formula, ml317bt the regulator’s fixed voltage for V ref e.

The LM negative complement to the LM pm317bt voltages below, rather than above, the reference. Retrieved from ” https: Three Terminal Positive Voltage Regulator. It was designed by Robert “Bob” Pease. The LM is an adjustable analogue to the popular 78xx fixed regulators. 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.

LM317BT Datasheet PDF – Motorola => Freescale

Linear regulators inherently waste power, the power dissipated is the current passed multiplied by the voltage difference between input datahseet output. Wikimedia Commons has media related to LM and Voltage regulator circuits. Archived from the original PDF on 31 March Further, it employs internal current limiting, thermal shutdown and safe area compensation, making it essentially blow—out proof.

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Output Transistor Safe—Area Compensation 6. Internal Thermal Overload Protection 4.

Floating Operation for High Voltage Applications 7. Higher regulated voltages are obtained by connecting the adjustment pin to a resistive voltage divider between the output and ground. In other projects Wikimedia Commons. In packages with a heat-dissipating mounting tab, such as TOthe tab is connected internally to the output pin which may lm31b7t it necessary to electrically isolate the tab or the heat sink from other parts of the application circuit.

How the adjustment pin is connected determines the output voltage as follows. Failure to do this may cause the circuit to short.

The LM is a popular adjustable positive linear voltage regulator. Like the LM, each of the 78xx 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 “.

Because of this, the error term in the formula dwtasheet be ignored and the value of the low-side resistor becomes more critical.