Overview
The LM317MBDTG is a versatile and reliable adjustable voltage regulator manufactured by Onsemi. It is a monolithic integrated circuit designed to provide precise voltage regulation and is capable of delivering up to 500 mA of output current. The device features an adjustable output voltage range from 1.25 V to 37 V, making it suitable for a wide range of electronic applications where stable and reliable voltage regulation is essential.
Key Specifications
| Specification | Value | Unit |
|---|---|---|
| Input Voltage Range | 4.2 V to 37 V | V |
| Output Voltage Range | 1.25 V to 37 V | V |
| Output Current | Up to 500 mA | mA |
| Dropout Voltage | 1.5 V | V |
| Line Regulation | 0.01 %/V | %/V |
| Load Regulation | 0.1 % | % |
| Operating Temperature Range | 0°C to +125°C | °C |
| Thermal Shutdown | 180 °C | °C |
Key Features
- Adjustable Output Voltage: Allows for precise voltage regulation as per the application requirements.
- Internal Thermal Overload Protection: Safeguards the IC from overheating and potential damage.
- Short Circuit Current Limiting: Protects the IC and the load from excessive current conditions.
- Wide Input Voltage Range: Operating from 4.2 V to 37 V, suitable for various power supply designs.
- Low Dropout Voltage: Efficient operation with minimal voltage drop across the regulator.
- High Ripple Rejection: Filters out noise and provides clean output voltage.
Applications
- Power Supplies: Commonly used in power supply circuits for various electronic devices, including battery chargers, audio equipment, and instrumentation.
- LED Drivers: Used as a constant current source to drive LEDs with a regulated current.
- Battery Management Systems: Utilized in battery management systems for charging and monitoring batteries in portable devices, automotive applications, and renewable energy systems.
- Audio Amplifiers: Employed to provide stable power to the amplifier components, ensuring clean and distortion-free audio output.
- Test and Measurement Equipment: Used where precise voltage regulation is essential for accurate readings and reliable operation.
Q & A
- What are the main features of the LM317MBDTG?
The LM317MBDTG offers adjustable output voltage, thermal overload protection, short circuit current limiting, wide input voltage range, low dropout voltage, and high ripple rejection.
- How does the LM317MBDTG compare to other voltage regulators?
The LM317MBDTG stands out for its adjustable output voltage range and thermal protection features, making it versatile for applications requiring precise voltage control and reliability.
- Can the LM317MBDTG be used as a direct replacement for the LM1117?
Yes, the LM317MBDTG can serve as a replacement for the LM1117 in applications where adjustable output voltage and thermal protection are required.
- What are some common applications of the LM317MBDTG in electronic circuits?
The LM317MBDTG is commonly used in power supplies, LED drivers, battery management systems, audio amplifiers, and test equipment.
- What considerations should be taken into account when using the LM317MBDTG in power supply designs?
It is essential to consider thermal management, load regulation, and feedback resistor values to achieve stable voltage regulation. Additionally, attention should be given to input and output capacitors for filtering and stability.
- What is the operating temperature range of the LM317MBDTG?
The operating temperature range of the LM317MBDTG is from 0°C to +125°C.
- What is the maximum output current of the LM317MBDTG?
The maximum output current of the LM317MBDTG is up to 500 mA.
- What is the dropout voltage of the LM317MBDTG?
The dropout voltage of the LM317MBDTG is 1.5 V.
- How does the LM317MBDTG protect against thermal overload?
The LM317MBDTG features internal thermal overload protection, which safeguards the IC from overheating and potential damage.
- What package types are available for the LM317MBDTG?
The LM317MBDTG is available in a TO-252 package, suitable for through-hole or surface-mount technology.
