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LM317LZ
+NomenclatureIC REG LIN POS ADJ 100MA TO92-3
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FabricantSemi - conducteurs
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Pièce fabricant #LM317LZ
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Package TO-92
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En stock7738
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Spécifications
| Attribut | Valeur |
| Package | Bulk,Tube |
| ProductStatus | Obsolete |
| OutputConfiguration | Positive |
| OutputType | Adjustable |
| NumberofRegulators | 1 |
| Voltage-Input(Max) | 40V |
| Voltage-Output(Min/Fixed) | 1.2V |
| Voltage-Output(Max) | 37V |
| Current-Output | 100mA |
| PSRR | 80dB (120Hz) |
| ProtectionFeatures | Over Current, Over Temperature, Short Circuit |
| OperatingTemperature | 0°C ~ 125°C |
| MountingType | Through Hole |
| Package/Case | TO-226-3, TO-92-3 (TO-226AA) |
Présentation
Description
This regulator is ideal for small electronic projects, battery chargers, and as a post-regulator for switching power supplies. Its compact size makes it suitable for space-constrained designs. The LM317LZ is noted for its ability to provide a cleaner output compared to fixed voltage regulators, thanks to its adjustable nature. It's widely used in hobbyist projects and low-current applications due to its versatility and ease of use. The device is manufactured by several companies, ensuring wide availability and support.
Equivalent
1. TL317L (Texas Instruments)
2. L78L33 (STMicroelectronics)
3. NTE960 (NTE Electronics)
4. NJM317LM (NJR/New Japan Radio)
5. KA317L (ON Semiconductor)
These alternatives offer similar functionality, allowing adjustable output voltage with a fixed current capability, suitable for low-power applications. Always verify the specifications from datasheets to ensure compatibility with your specific application.
Features
1. Adjustable Output: It can provide an output voltage ranging from 1.25V to 37V, depending on the external resistor configuration.
2. Output Current: Capable of supplying up to 100 mA of load current.
3. Line Regulation: Offers a line regulation of 0.01% per volt, ensuring stable output despite input voltage variations.
4. Load Regulation: Provides a load regulation of 0.1%, maintaining output stability under varying load conditions.
5. Thermal Overload Protection: Includes an internal thermal overload protection feature to prevent overheating.
6. Short-Circuit Protection: Features current limiting to protect against short-circuit conditions.
7. Safe Operating Area Protection: Ensures reliable operation across its entire range of voltages and currents.
8. Compact Package: Available in a TO-92 package, making it suitable for space-constrained designs.
These features make the LM317LZ ideal for applications requiring low-power voltage regulation and precise output voltage adjustments.
Pinout
1. Input (Vin): This pin receives the input voltage that you wish to regulate.
2. Output (Vout): This pin provides the regulated output voltage.
3. Adjust (Adj): This pin is used to set the output voltage. By connecting a resistor between the Adjust pin and the Output pin, and another from the Adjust pin to the ground, the output voltage can be adjusted according to the formula \( V_{\text{out}} = V_{\text{ref}} \times (1 + \frac{R2}{R1}) + I_{\text{adj}} \times R2 \), where \( V_{\text{ref}} \) is typically 1.25V.
The LM317LZ can provide an output voltage range from 1.25V to 37V and current up to 100mA. It is widely used for applications requiring a variable power supply.
Manufacturer
Texas Instruments (TI) is an American technology company that designs and manufactures semiconductors and various integrated circuits, which are used in electronic devices and systems. TI is well-known for its innovation in analog and embedded processing products and is a major player in the semiconductor industry.
ON Semiconductor, now known as onsemi, is another prominent semiconductor company. It is known for its wide range of energy-efficient solutions, including power and signal management, logic, discrete, and custom devices. Onsemi serves a variety of markets, including automotive, industrial, and communications.
Both companies are key players in the semiconductor industry, providing essential components for various electronic devices worldwide.