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LM317LCDR
+BOMIC REG LIN POS ADJ 100MA 8SOIC
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ManufacturerTexas Instruments
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Mfr. Part #LM317LCDR
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Package SOIC (D)-8
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In Stock5499
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Specifications
| Attribute | Value |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| OutputConfiguration | Positive |
| OutputType | Adjustable |
| NumberofRegulators | 1 |
| Voltage-Input(Max) | 38V |
| Voltage-Output(Min/Fixed) | 1.2V |
| Voltage-Output(Max) | 32V |
| Current-Output | 100mA |
| PSRR | 80dB ~ 65dB (120Hz) |
| ProtectionFeatures | Over Current, Over Temperature, Short Circuit |
| OperatingTemperature | 0°C ~ 125°C |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
Overview
Description
This voltage regulator offers excellent load and line regulation, typically around 0.1% and 0.01% per volt, respectively. It also includes built-in current limiting, thermal overload protection, and safe operating area protection, ensuring reliable performance under various conditions. The "LCDR" in its name refers to its packaging type, which is typically a surface-mount SOT-223 package, suitable for compact electronic circuits.
The LM317LCDR is ideal for applications in battery chargers, power management for microcontrollers, and other adjustable power supplies. Its simplicity, reliability, and wide range of output voltage make it a popular choice for both hobbyists and professionals in electronics design.
Equivalent
1. LM317T
2. L317
3. LM117
4. TL317
5. UA7805 (with adjustable features)
6. NTE956
These alternatives offer similar functionality but may have different packaging or specifications. Always check the datasheets to ensure compatibility with your application.
Features
1. Adjustable Output Voltage: It allows for a wide range of output voltages from 1.25 V to 37 V, depending on the external resistor configuration.
2. Output Current: The device can supply over 100 mA of load current, suitable for various applications.
3. Thermal Overload Protection: It includes built-in protection against overheating, enhancing reliability.
4. Short-Circuit Protection: It features current limiting to guard against short circuits.
5. Line and Load Regulation: Offers good line regulation (0.01%/V) and load regulation (0.1% typical), ensuring stable output under varying conditions.
6. Temperature Compensation: The reference voltage is internally compensated to maintain accuracy over a range of temperatures.
7. Dropout Voltage: Low dropout voltage of around 3 V, facilitating efficient operation.
8. Package: Often available in a small surface-mount package, like the TO-252, enabling easy integration into compact designs.
These features make the LM317LCDR suitable for applications requiring a dependable, adjustable power supply in electronic devices.
Pinout
1. Input (Vin): The input pin where the unregulated voltage is applied. The LM317 can handle a wide range of input voltages.
2. Output (Vout): The pin from which the regulated output voltage is taken.
3. Adjustment (Adj): This pin is used to set the output voltage level. By connecting external resistors between the output, adjustment, and ground, you can adjust the output voltage to a desired level.
These pins make the LM317LCDR versatile and widely used in applications requiring reliable voltage regulation.