Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Bulk,Tube |
| ProductStatus | Active |
| OutputConfiguration | Positive |
| OutputType | Adjustable |
| NumberofRegulators | 1 |
| Voltage-Input(Max) | 40V |
| Voltage-Output(Min/Fixed) | 1.2V |
| Voltage-Output(Max) | 37V |
| Current-Output | 500mA |
| Current-Quiescent(Iq) | 10 mA |
| PSRR | 80dB ~ 65dB (120Hz) |
| ProtectionFeatures | Over Current, Over Temperature, Short Circuit |
| OperatingTemperature | 0°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | TO-252-3, DPak (2 Leads + Tab), SC-63 |
Tổng quan
Description
The LM317MDTG is a popular adjustable voltage regulator designed to provide a steady output voltage ranging from 1.25V to 37V, with a current output capability of up to 500 mA. It is commonly used in a variety of electronic applications for voltage regulation due to its versatility and ease of use. The device features internal current limiting, thermal overload protection, and safe area compensation to ensure stable operation and protection against potential damage under various conditions.
This voltage regulator is part of the LM317 series, known for its reliability and performance. It requires just two external resistors to set the output voltage, making it simple to implement in circuits. Its TO-252 package allows for efficient heat dissipation, which is essential when the device is used at higher currents or voltage differentials. The LM317MDTG is suitable for use in power supplies, battery chargers, and other applications where a stable and adjustable DC voltage is needed. Its robust design and protective features make it a trusted component in many electronic projects.
This voltage regulator is part of the LM317 series, known for its reliability and performance. It requires just two external resistors to set the output voltage, making it simple to implement in circuits. Its TO-252 package allows for efficient heat dissipation, which is essential when the device is used at higher currents or voltage differentials. The LM317MDTG is suitable for use in power supplies, battery chargers, and other applications where a stable and adjustable DC voltage is needed. Its robust design and protective features make it a trusted component in many electronic projects.
Equivalent
The LM317MDTG is a voltage regulator commonly used for adjustable voltage applications. Equivalent products include:
1. LM317 series from various manufacturers (Texas Instruments, STMicroelectronics, etc.).
2. L78xx series for fixed output voltages, although these aren't adjustable like the LM317.
3. L7815 and L7915 series for specific 15V outputs.
4. UA7805 for 5V applications.
5. LT1086 for high-performance applications.
6. NTE956 as a direct replacement.
These alternatives offer similar functionality but may vary in specific features or performance.
1. LM317 series from various manufacturers (Texas Instruments, STMicroelectronics, etc.).
2. L78xx series for fixed output voltages, although these aren't adjustable like the LM317.
3. L7815 and L7915 series for specific 15V outputs.
4. UA7805 for 5V applications.
5. LT1086 for high-performance applications.
6. NTE956 as a direct replacement.
These alternatives offer similar functionality but may vary in specific features or performance.
Features
The LM317MDTG is a versatile adjustable voltage regulator. Its main features include:
1. Output Voltage Range: The device allows for an adjustable output voltage range from 1.25V to 37V, which can be set using external resistors.
2. Output Current: It can deliver a maximum output current of 1.5A, depending on the input-output voltage differential and operating conditions.
3. Line Regulation: It maintains excellent line regulation, typically 0.01% per volt, ensuring consistent performance despite input voltage fluctuations.
4. Load Regulation: The load regulation is typically 0.1%, providing stable output under varying load conditions.
5. Thermal Overload Protection: The LM317 includes built-in thermal protection to prevent overheating.
6. Current Limiting: It features current limiting for enhanced safety and reliability.
7. Safe Operating Area (SOA) Protection: Ensures reliable operation across different load conditions.
8. Package Options: Available in various packages, including TO-252 (DPAK), which is suitable for surface mounting.
These features make the LM317MDTG a reliable choice for power regulation in numerous electronic applications.
1. Output Voltage Range: The device allows for an adjustable output voltage range from 1.25V to 37V, which can be set using external resistors.
2. Output Current: It can deliver a maximum output current of 1.5A, depending on the input-output voltage differential and operating conditions.
3. Line Regulation: It maintains excellent line regulation, typically 0.01% per volt, ensuring consistent performance despite input voltage fluctuations.
4. Load Regulation: The load regulation is typically 0.1%, providing stable output under varying load conditions.
5. Thermal Overload Protection: The LM317 includes built-in thermal protection to prevent overheating.
6. Current Limiting: It features current limiting for enhanced safety and reliability.
7. Safe Operating Area (SOA) Protection: Ensures reliable operation across different load conditions.
8. Package Options: Available in various packages, including TO-252 (DPAK), which is suitable for surface mounting.
These features make the LM317MDTG a reliable choice for power regulation in numerous electronic applications.
Pinout
The LM317MDTG is a voltage regulator integrated circuit (IC) that typically comes in a TO-252 (DPAK) package. It has three pins with the following functions:
1. Input: This pin receives the unregulated input voltage. The LM317 can handle input voltages up to 40V.
2. Output: This pin provides the regulated output voltage. The output voltage can be adjusted from 1.25V to 37V using an external resistor network.
3. Adjustment (Adj): This pin is used to set the output voltage. By connecting a resistor network between the output and ground, the output voltage can be adjusted.
The LM317 is commonly used for linear voltage regulation in power supply applications where a stable voltage output is needed. It features overload protection, thermal regulation, and short-circuit protection. The adjustable output makes it versatile for various applications.
1. Input: This pin receives the unregulated input voltage. The LM317 can handle input voltages up to 40V.
2. Output: This pin provides the regulated output voltage. The output voltage can be adjusted from 1.25V to 37V using an external resistor network.
3. Adjustment (Adj): This pin is used to set the output voltage. By connecting a resistor network between the output and ground, the output voltage can be adjusted.
The LM317 is commonly used for linear voltage regulation in power supply applications where a stable voltage output is needed. It features overload protection, thermal regulation, and short-circuit protection. The adjustable output makes it versatile for various applications.
Manufacturer
The LM317MDTG is manufactured by ON Semiconductor, now known as onsemi. Onsemi is a semiconductor manufacturing company that specializes in designing and producing a wide range of semiconductor solutions, including power management, analog devices, sensors, and custom devices. The company serves various industries such as automotive, industrial, communications, computing, and consumer electronics. Onsemi is recognized for its focus on energy-efficient electronics and innovations that support sustainable technology solutions.
Application
The LM317MDTG is a versatile adjustable voltage regulator with applications in a variety of fields. It is commonly used in power supply design for converting different voltage levels in electronic devices. Its flexibility makes it ideal for battery chargers, powering microcontrollers, and general-purpose voltage regulation in consumer electronics. It's also used in DIY electronics projects for prototyping and testing circuits. In industrial applications, it serves in process control systems and instrumentation. Its ability to provide a stable output voltage with minimal external components makes it useful in telecommunications, automotive electronics, and LED lighting systems. The LM317MDTG is valued for its reliability and ease of use across these diverse applications.
Package
The LM317MDTG is a voltage regulator packaged in a DPAK (TO-252) form factor. This surface-mount package is designed for efficient heat dissipation and is commonly used for applications requiring adjustable output voltage.
