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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.

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This is the trade-off for using linear regulators which are a simple way to provide a stable voltage with few additional components.

Regulator Full output current not available at high input-output voltages High Current Adjustable Regulator 17 Power Follower www. J Order Package Number Marking 1. Of Outputs 1 No.

LMAT/NOPB – Texas Instruments – PCB Footprint & Symbol Download

Higher regulated voltages are obtained by connecting the adjustment pin to a resistive voltage divider between the output and ground. Accidenti come scotta questo transistor. Application Hints In operation, the LM develops a nominal 1. Like the LM, each of datasheeh 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 “.

For more National Semiconductor product information and proven datashret tools, visit the following Web sites at: Archived from the original PDF on 18 April REF The reference voltage is impressed across program resistor R1 and, since the voltage is constant, a constant current I This page was last edited on 6 Julyat In addition to higher performance than fixed regulators, the.


The LM relates in the same way to the dagasheet 79xx regulators. In use an LM commonly requires a heat sink to prevent the operating temperature rising too high. 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 datashset circuit. The LM series of adjustable 3-terminal positive voltage.

(PDF) LM317AT Datasheet download

Linear regulators inherently waste power, the power dissipated is the current ddatasheet multiplied by the voltage difference between input and output. From Wikipedia, the free encyclopedia. The LM negative complement to the LM lm317t voltages below, rather than above, the reference. Linear integrated circuits Voltage regulation. Failure to do this may cause the circuit to short.

For large voltage differences, the energy lost as heat can ultimately be greater than that provided to the circuit.

Download datasheet 2Mb Share this page. Page 17 Regulator Full output current not available at high input-output voltages High Current Adjustable Regulator 17 Power Follower www.

Of Pins 3 Output Current 1. The device can be lm17at to regulate the current to a load, rather than the voltage, by replacing the low-side resistor of the divider with the load itself.


The LM is an adjustable analogue to the popular 78xx fixed regulators. The alternative is datasheeet use a switching voltage regulator which is usually more efficient but has a larger footprint and requires a larger number of associated components.

LMAT datasheet and specification datasheet. If the adjustment pin is connected to ground the output pin delivers a regulated voltage of 1.

LMAT (National Semiconductor) – 3-Terminal Adjustable Regulator, Positive

LMAT datasheet and specification datasheet Download datasheet. Maximum Allowable Power Dissipation vs. Datashdet, the 78xx device’s quiescent current is substantially higher and less stable. Because of this, the error term in the formula cannot be ignored and the value of the low-side resistor becomes more critical. Normally, no capacitors are needed unless the device is sit.

Retrieved from ” https: 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, using the regulator’s fixed voltage for V ref e. The LM has three pins: Prev Next 3-Terminal Adjustable Regulator.