Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2All trademarks are the property of. LMAT Texas Instruments | LMAT-ND DigiKey Electronics. LMAT Linear Digi-Key Part Number, LMAT-ND Datasheets, LMA Datasheet . LMAT datasheet, LMAT pdf, LMAT data sheet, datasheet, data sheet, pdf, National Semiconductor, 3-Terminal Adjustable Regulator.

Author: Zulugal Vudokus
Country: Liberia
Language: English (Spanish)
Genre: Art
Published (Last): 23 June 2013
Pages: 93
PDF File Size: 3.95 Mb
ePub File Size: 14.10 Mb
ISBN: 298-4-75093-512-3
Downloads: 2524
Price: Free* [*Free Regsitration Required]
Uploader: Vunris

This is the trade-off for using linear regulators which datasbeet a simple way to provide a stable voltage with few additional components. How the adjustment pin is connected determines the output voltage as follows. Higher regulated voltages are obtained by connecting the adjustment pin to a resistive voltage lm31a7t between the output and ground.

The mechanism used is similar enough that a voltage divider can be used in lm317ar same way as with the LM and the output follows the same formula, using the regulator’s fixed voltage for V ref e. LMAT datasheet and specification datasheet. Archived from the original PDF on 18 April Failure to do this may cause the circuit to short. Retrieved from ” https: LMAT datasheet and specification datasheet Download datasheet.

In use an LM commonly requires a heat sink to prevent the operating temperature rising too high.

Linear integrated circuits Voltage regulation. Maximum Allowable Power Dissipation vs. However, the 78xx device’s quiescent current is substantially higher and less xatasheet. Prev Next 3-Terminal Adjustable Regulator. Because of this, the error term in the formula cannot be ignored and the value of the low-side resistor becomes more critical.


LMAT datasheet & applicatoin notes – Datasheet Archive

The output current is that resulting from dropping the reference voltage across the resistor. It was designed by Robert “Bob” Pease. Page 27 Notes 27 www.

Page 17 Regulator Full output current not available at high input-output voltages High Current Adjustable Regulator 17 Power Follower www.

They are exceptionally easy to use. 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. Further, both line and load regulation are better than. The LM is a popular adjustable positive linear voltage regulator. Because some quiescent current flows from the adjustment pin of the device, an error term is added:.

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 “.

The LM series of adjustable 3-terminal positive voltage. Download datasheet 2Mb Share this page. Accidenti come scotta questo transistor.

(PDF) LM317AT Datasheet download

Of Pins 3 Output Current 1. Views Read Edit View history. 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 datasheef with the load itself.


In packages with a heat-dissipating mounting tab, such as TOdatasueet tab is connected internally to the output pin which may datasjeet it necessary to electrically isolate the tab or the heat sink from other parts of the application circuit.

In addition to higher performance than fixed regulators, the. Copy your embed code and put on your site: Output capacitors in the range. All other trademarks are the property of their respective owners.

Retrieved 31 March LM series offers full overload protection available only in. Also, it makes an especially simple adjustable switching reg. The LM has three pins: Full output current not available at high input-output voltages. Included on the chip are current limit, thermal overload. The LM is an adjustable analogue to the popular 78xx fixed regulators.

The LM is designed to compensate for these fluctuations internally, making such measures unnecessary. An optional output ca. Application Hints In operation, the LM develops a nominal 1. Archived from the original on 17 December From Wikipedia, the free encyclopedia. For more National Semiconductor product information and proven design tools, visit the following Web sites at: By using this site, you agree to the Terms of Use and Privacy Policy.