Thông số kỹ thuật
| thuộc tính | Giá trị |
| 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 | -40°C ~ 125°C |
| MountingType | Surface Mount |
| Package/Case | TO-263-3, D²Pak (2 Leads + Tab), TO-263AB |
Tổng quan
Description
The LM317BD2TR4G is a versatile, adjustable voltage regulator integrated circuit (IC) manufactured by ON Semiconductor. It is designed to provide a stable output voltage, adjustable from 1.25V to 37V, with an output current capability of up to 1.5A. This IC is particularly well-suited for use in power supply applications where a steady and adjustable output voltage is required.
Key features of the LM317BD2TR4G include internal current limiting, thermal overload protection, and safe area compensation, which enhance its reliability and performance under various operating conditions. The device typically requires only two external resistors to set the output voltage, making it easy to configure and implement.
Packaged in a D2PAK-3 (TO-263) surface-mount format, the LM317BD2TR4G offers a compact footprint suitable for high-density circuit boards. Its robust design and wide input voltage range make it ideal for a variety of electronic applications, including consumer electronics, industrial equipment, and telecommunications.
Key features of the LM317BD2TR4G include internal current limiting, thermal overload protection, and safe area compensation, which enhance its reliability and performance under various operating conditions. The device typically requires only two external resistors to set the output voltage, making it easy to configure and implement.
Packaged in a D2PAK-3 (TO-263) surface-mount format, the LM317BD2TR4G offers a compact footprint suitable for high-density circuit boards. Its robust design and wide input voltage range make it ideal for a variety of electronic applications, including consumer electronics, industrial equipment, and telecommunications.
Equivalent
The LM317BD2TR4G is a voltage regulator. Equivalent products include the LM317T LM317K, and LM317LZall of which are adjustable voltage regulators with similar specifications. Other equivalents are the LT1086, UA7805, and NCP1117, though some may differ slightly in features or performance. It’s important to cross-reference electrical characteristics like input/output current, voltage range, and package type when selecting a replacement.
Features
The LM317BD2TR4G is a versatile, adjustable voltage regulator commonly used in electronic circuits. Key features include:
1. Adjustable Output Voltage: It supports a wide range of output voltages from 1.25V to 37V, allowing flexibility in various applications.
2. Output Current: Capable of delivering up to 1.5A of current, suitable for medium-power applications.
3. Temperature Range: Operates within a temperature range of -40°C to +125°C, making it reliable in different environmental conditions.
4. Thermal Overload Protection: Includes built-in protection to prevent damage from overheating.
5. Current Limiting: Provides current limitation to safeguard against short circuits.
6. Safe Operating Area Protection: Ensures the device operates within safe limits under all conditions.
7. Dropout Voltage: Features a low dropout voltage, improving efficiency.
8. Package: Comes in a TO-252 surface-mount package, ideal for compact design requirements.
These features make the LM317BD2TR4G suitable for a variety of applications, including power supplies and battery chargers.
1. Adjustable Output Voltage: It supports a wide range of output voltages from 1.25V to 37V, allowing flexibility in various applications.
2. Output Current: Capable of delivering up to 1.5A of current, suitable for medium-power applications.
3. Temperature Range: Operates within a temperature range of -40°C to +125°C, making it reliable in different environmental conditions.
4. Thermal Overload Protection: Includes built-in protection to prevent damage from overheating.
5. Current Limiting: Provides current limitation to safeguard against short circuits.
6. Safe Operating Area Protection: Ensures the device operates within safe limits under all conditions.
7. Dropout Voltage: Features a low dropout voltage, improving efficiency.
8. Package: Comes in a TO-252 surface-mount package, ideal for compact design requirements.
These features make the LM317BD2TR4G suitable for a variety of applications, including power supplies and battery chargers.
Pinout
The LM317BD2TR4G is a type of adjustable voltage regulator with a pin count of 3. The functions of these pins are as follows:
1. Input Pin (Vin): This pin is where the unregulated voltage is supplied. The input voltage must be higher than the desired output voltage plus the dropout voltage.
2. Output Pin (Vout): This pin provides the regulated output voltage. The output voltage can be adjusted using external resistors.
3. Adjustment Pin (Adj): This pin is connected to the external resistors that set the output voltage. By varying the resistance between this pin and the output/ground, the output voltage can be adjusted over a range.
The LM317BD2TR4G is used in a variety of applications to provide a stable output voltage, with the capability to adjust between approximately 1.25V to 37V, depending on the input voltage and external components used.
1. Input Pin (Vin): This pin is where the unregulated voltage is supplied. The input voltage must be higher than the desired output voltage plus the dropout voltage.
2. Output Pin (Vout): This pin provides the regulated output voltage. The output voltage can be adjusted using external resistors.
3. Adjustment Pin (Adj): This pin is connected to the external resistors that set the output voltage. By varying the resistance between this pin and the output/ground, the output voltage can be adjusted over a range.
The LM317BD2TR4G is used in a variety of applications to provide a stable output voltage, with the capability to adjust between approximately 1.25V to 37V, depending on the input voltage and external components used.
Manufacturer
The LM317BD2TR4G is manufactured by ON Semiconductor, a company known for supplying a wide range of semiconductor products. ON Semiconductor, now operating as onsemi, is headquartered in Phoenix, Arizona, and is recognized for its comprehensive portfolio that includes power and signal management, logic, discrete, and custom devices for various applications. The company serves a diverse array of markets including automotive, industrial, cloud power, and the Internet of Things (IoT). Onsemi focuses on providing energy-efficient solutions and technologies, emphasizing sustainability and innovation in its product offerings.
Application
The LM317BD2TR4G is a versatile adjustable voltage regulator used in various applications. It is commonly employed in power supply circuits for adjusting and stabilizing output voltage levels. Key application areas include battery chargers, LED drivers, and voltage regulation in embedded systems. It is also used in powering microcontrollers and other low-voltage digital circuits. Additionally, it finds applications in consumer electronics, communication equipment, and automotive electronics, where precise voltage regulation is essential. Its ability to provide a range of output voltages with a simple setup makes it suitable for prototyping and educational projects as well.
Package
The LM317BD2TR4G is a voltage regulator packaged in a D2PAK, which is a surface-mount package often used for power devices. It has three terminals and is designed for mounting on a printed circuit board (PCB). This package is suitable for applications requiring efficient heat dissipation due to its large heat sink area.
