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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LT3082EST датащи(PDF) 7 Page - Linear Technology |
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LT3082EST датащи(HTML) 7 Page - Linear Technology |
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7 / 20 page  LT3082 7 3082f PIN FUNCTIONS (DD/ST/TS8) BLOCK DIAGRAM IN SET 10μA 3082 BD OUT IN (Pins 7, 8/Pin 3/Pins 7, 8): Input. This pin supplies power to regulate internal circuitry and supply output load current. For the device to operate properly and regulate, the voltage on this pin must be 1.2V to 1.4V above the OUT pin (depending on output load current—see the dropout voltage specifications in the Electrical Charac- teristics table). NC (Pins 3, 5, 6/NA/Pins 1, 6): No Connection. These pins have no connection to internal circuitry and may be tied to IN, OUT, GND or floated. OUT (Pins 1, 2/Pin 2/Pins 2, 3, 4): Output. This is the power output of the device. The LT3082 requires a 0.5mA minimum load current or the output will not regulate. SET (Pin 4/Pin 1/Pin 5): Set. This pin is the error ampli- fier’s noninverting input and also sets the operating bias point of the circuit. A fixed 10μA current source flows out of this pin. A single external resistor programs VOUT. Output voltage range is 0V to 38.5V. Exposed Pad/Tab (Pin 9/Tab/NA): Output. The Exposed Pad of the DFN package and the Tab of the SOT-223 package are tied internally to OUT. Tie them directly to OUT pins (Pins 1, 2/Pin 2) at the PCB. The amount of copper area and planes connected to the Exposed Pad/Tab determine the effective thermal resistance of the packages (see the Applications Information section). |
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