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LM317D2TR4G
+NomenclatureIC REG LIN POS ADJ 1.5A D2PAK-3
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FabricantSemi - conducteurs
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Pièce fabricant #LM317D2TR4G
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En stock5404
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Spécifications
| Attribut | Valeur |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| OutputConfiguration | Positive |
| OutputType | Adjustable |
| NumberofRegulators | 1 |
| Voltage-Input(Max) | 40V |
| Voltage-Output(Min/Fixed) | 1.2V |
| Voltage-Output(Max) | 37V |
| Current-Output | 1.5A |
| Current-Quiescent(Iq) | 10 mA |
| PSRR | 80dB ~ 65dB (120Hz) |
| ProtectionFeatures | Over Current, Over Temperature, Short Circuit |
| OperatingTemperature | 0°C ~ 125°C |
| MountingType | Surface Mount |
| Package/Case | TO-263-3, D²Pak (2 Leads + Tab), TO-263AB |
Présentation
Description
The LM317D2TR4G is housed in a D2PAK-3 package, which offers good thermal performance and is suitable for surface-mount applications, making it ideal for modern PCB designs. It features internal current limiting, thermal overload protection, and safe area compensation, enhancing its robustness and reliability in demanding environments.
Common applications include DC-to-DC conversion, powering microcontrollers, and other electronic components requiring a stable voltage supply. Its ease of use, with only a few external resistors needed to set the output voltage, makes it a popular choice for both hobbyists and professional engineers.
Equivalent
1. LM317T
2. LM317AT
3. LM317L
4. NTE956
5. NJM317
6. TL317
These equivalents offer similar voltage regulation capabilities with adjustable output. However, always check datasheets for specific electrical characteristics and package compatibility.
Features
1. Output Voltage Range: Adjustable from 1.25V to 37V, allowing customization to suit various applications.
2. Output Current: Capable of delivering over 1.5A, making it suitable for moderate power applications.
3. Line Regulation: Offers excellent line regulation typically at 0.01%/V.
4. Load Regulation: Provides good load regulation at 0.1%, ensuring stable output under variable loads.
5. Thermal Overload Protection: Equipped with thermal regulation to prevent damage from overheating.
6. Short-Circuit Protection: Features current limiting to protect against short circuits.
7. Package Type: Available in a TO-263 surface-mount package for efficient heat dissipation.
8. Temperature Range: Operates effectively in a wide temperature range, typically from -40°C to +125°C.
9. Dropout Voltage: Low dropout voltage, typically 3V at full load, improving efficiency.
10. Applications: Ideal for use in power supply designs, battery chargers, and embedded systems.
These features make the LM317D2TR4G a reliable choice for a wide range of electronic projects requiring a stable and adjustable power supply.
Pinout
Pin Count and Functions:
1. Input (IN): The input pin where the unregulated voltage is supplied. This pin is connected to the higher side of the voltage that needs regulation.
2. Output (OUT): The output pin provides the regulated output voltage. The voltage is adjusted by connecting a resistor network between the output and adjust pins.
3. Adjust (ADJ): The adjust pin is used to set the output voltage by connecting it to a pair of resistors forming a voltage divider with the output pin.
The LM317 can supply output voltages from 1.25V to about 37V and can provide a load current of up to 1.5A with proper heat sinking. The output voltage is determined by the resistor values connected between the output and adjust pins.