Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Bulk,Tube |
| ProductStatus | Active |
| OutputConfiguration | Negative |
| 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) | 6 mA |
| Current-Supply(Max) | 10 mA |
| PSRR | 77dB (120Hz) |
| ProtectionFeatures | Over Current, Over Temperature |
| OperatingTemperature | 0°C ~ 125°C |
| MountingType | Through Hole |
| Package/Case | TO-220-3 |
Tổng quan
Description
The LM337TG is a three-terminal adjustable negative voltage regulator capable of supplying up to 1.5A over an output voltage range of -1.2V to -37V. It is part of the LM337 series, known for its reliability and versatility in regulating negative DC voltage in various electronic applications. The device requires two external resistors to set the output voltage and may include additional components for improved stability and performance, such as capacitors and diodes.
The LM337TG is commonly used in power supply designs for providing stable and adjustable negative voltage rails. Its thermal overload protection, short-circuit protection, and safe area compensation make it a robust choice for many circuits. The "TG" designation typically refers to specific packaging, with TO-220 being a common variant, offering good heat dissipation properties.
Ideal for use in a wide range of applications, including battery chargers, operational amplifiers, and precision current regulators, the LM337TG offers flexibility and ease of use in designing reliable power supply solutions.
The LM337TG is commonly used in power supply designs for providing stable and adjustable negative voltage rails. Its thermal overload protection, short-circuit protection, and safe area compensation make it a robust choice for many circuits. The "TG" designation typically refers to specific packaging, with TO-220 being a common variant, offering good heat dissipation properties.
Ideal for use in a wide range of applications, including battery chargers, operational amplifiers, and precision current regulators, the LM337TG offers flexibility and ease of use in designing reliable power supply solutions.
Equivalent
The LM337TG is a negative adjustable voltage regulator. Equivalent products include the LM337 by other manufacturers like Texas Instruments, ON Semiconductor, or STMicroelectronics. Other alternatives could be the UA337, L337, or KA337, which provide similar functionality. Ensure to check datasheets for compatibility in terms of voltage range, current capacity, and thermal characteristics before substituting.
Features
The LM337TG is a three-terminal adjustable negative voltage regulator. Its primary features include:
1. Adjustable Output Voltage: It can deliver an output voltage ranging from -1.2V to -37V, which is set using two external resistors.
2. Output Current: The device can supply up to 1.5A of current.
3. Load and Line Regulation: It offers good regulation characteristics, maintaining stable output despite variations in input voltage or load current.
4. Thermal Overload Protection: Protects the device from overheating.
5. Short-Circuit Current Limiting: Provides protection against output short circuits.
6. Safe Operating Area (SOA) Protection: Ensures the device operates within its safe limits, preventing damage under all conditions.
7. Dropout Voltage: Typically around 3V, allowing the regulator to maintain regulation with a reasonable difference between input and output voltages.
8. Temperature Range: Suitable for operation from -40°C to +125°C.
These features make the LM337TG suitable for a variety of applications where a stable and adjustable negative voltage supply is required.
1. Adjustable Output Voltage: It can deliver an output voltage ranging from -1.2V to -37V, which is set using two external resistors.
2. Output Current: The device can supply up to 1.5A of current.
3. Load and Line Regulation: It offers good regulation characteristics, maintaining stable output despite variations in input voltage or load current.
4. Thermal Overload Protection: Protects the device from overheating.
5. Short-Circuit Current Limiting: Provides protection against output short circuits.
6. Safe Operating Area (SOA) Protection: Ensures the device operates within its safe limits, preventing damage under all conditions.
7. Dropout Voltage: Typically around 3V, allowing the regulator to maintain regulation with a reasonable difference between input and output voltages.
8. Temperature Range: Suitable for operation from -40°C to +125°C.
These features make the LM337TG suitable for a variety of applications where a stable and adjustable negative voltage supply is required.
Pinout
The LM337TG is a negative voltage regulator integrated circuit commonly used for adjustable voltage regulation. It typically comes in a 3-pin TO-220 package. Here are the pin functions:
1. Input (PIN 3): This pin is connected to the input voltage, which should be more negative than the output voltage by at least 3 volts.
2. Output (PIN 2): This pin provides the regulated negative output voltage. The output voltage can be adjusted using external resistors.
3. Adjust (PIN 1): This pin is used to set the output voltage. By connecting a resistor divider network between the output and the adjust pin, you can set the desired output voltage.
The LM337TG can output a negative voltage ranging from -1.2V to -37V, with a typical current capability of 1.5A, making it suitable for various applications requiring negative voltage regulation.
1. Input (PIN 3): This pin is connected to the input voltage, which should be more negative than the output voltage by at least 3 volts.
2. Output (PIN 2): This pin provides the regulated negative output voltage. The output voltage can be adjusted using external resistors.
3. Adjust (PIN 1): This pin is used to set the output voltage. By connecting a resistor divider network between the output and the adjust pin, you can set the desired output voltage.
The LM337TG can output a negative voltage ranging from -1.2V to -37V, with a typical current capability of 1.5A, making it suitable for various applications requiring negative voltage regulation.
Manufacturer
The LM337TG is manufactured by ON Semiconductor. ON Semiconductor is a semiconductor company that designs, manufactures, and supplies a broad portfolio of energy-efficient solutions. The company serves various markets, including automotive, industrial, cloud power, and consumer electronics. With a focus on power management, sensing, and connectivity, ON Semiconductor aims to help its customers increase energy efficiency, reduce global energy use, and create more sustainable systems and applications.
Application
The LM337TG is a versatile negative voltage regulator commonly used in various applications, including power supply design, voltage regulation, and load regulation in electronic circuits. It is ideal for providing stable negative voltage outputs in dual rail power supplies, often used in audio equipment, operational amplifier circuits, and analog devices. The device is also utilized in battery chargers, constant current regulators, and as a component in adjustable power supply units where precise voltage control is necessary. Its ability to handle varying input voltages makes it valuable in telecommunications, industrial automation, and consumer electronics.
Package
The LM337TG is a voltage regulator integrated circuit typically available in a TO-220 package. This package type is designed for through-hole mounting and is known for its ability to handle higher power levels due to its larger size and enhanced thermal dissipation capability.
