Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package / Case | Bulk,Tube |
| Part Status | Obsolete |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 40V |
| Voltage - Output (Min/Fixed) | 1.2V |
| Voltage - Output (Max) | 37V |
| Current - Output | 100mA |
| PSRR | 80dB (120Hz) |
| Protection Features | Over Current, Over Temperature, Short Circuit |
| Operating Temperature | 0°C ~ 125°C |
| Mounting Type | Through Hole |
Tổng quan
Description
The LM317LZ is a popular adjustable voltage regulator in a TO-92 package, designed for low-power applications. It can output a stable voltage range from 1.25V to 37V with an output current of up to 100mA. The device requires only two external resistors to set the output voltage, providing flexibility and ease of use. It features internal current limiting, thermal overload protection, and safe area compensation, enhancing its reliability and durability in various applications.
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.
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
The LM317LZ is a low-power adjustable linear voltage regulator. Equivalent products include:
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.
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
The LM317LZ is a versatile and adjustable voltage regulator designed for various applications. Key features include:
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.
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
The LM317LZ is a three-terminal adjustable voltage regulator. It is commonly used to regulate voltage in electronic circuits. The pin count and functions are as follows:
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.
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
The LM317LZ is a voltage regulator manufactured by several companies, including Texas Instruments and ON Semiconductor, among others.
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.
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.
Application
The LM317LZ is a versatile, low-power voltage regulator with applications in various electronic circuits. It is commonly used for adjustable power supply designs, allowing fine-tuning of output voltage to suit specific requirements. It's also employed in battery chargers, to provide a consistent charging voltage, and in LED drivers for stable LED operation. Additionally, the LM317LZ can be used in current regulation circuits, such as constant current sources for sensors. It finds applications in low-noise analog circuits due to its ability to deliver stable and precise voltages. Its compact form factor makes it ideal for portable devices and small-scale projects where space is limited.
Package
The LM317LZ is typically available in a TO-92 package. It's a three-terminal adjustable voltage regulator used for positive voltage regulation. The TO-92 package is a small, low-power package that is commonly used for transistors and some ICs like voltage regulators.
