LM317LMX/NOPB

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LM317LMX/NOPB

IC REG LIN POS ADJ 100MA 8SOIC

  • 제조업체
  • Mfr.부분 #LM317LMX/NOPB
  • 패키지 SOIC (D)-8
  • 데이터시트
  • 재고 있음5899

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사양

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 100mA
PSRR 80dB ~ 65dB (120Hz)
ProtectionFeatures Over Current, Over Temperature, Short Circuit
OperatingTemperature -40°C ~ 125°C
MountingType Surface Mount
Package/Case 8-SOIC (0.154, 3.90mm Width)

개요

Description

The LM317LMX/NOPB is a versatile, adjustable three-terminal voltage regulator manufactured by Texas Instruments. It is designed to provide a stable output voltage ranging from 1.25V to 37V, with an output current capacity of up to 100mA. This makes it suitable for a variety of applications where a reliable and precise voltage supply is required.
Key features of the LM317LMX/NOPB include its capability to maintain a stable output across varying input voltages and load conditions, as well as its thermal overload and short-circuit protection, which enhance device reliability and safety. The dropout voltage is about 3V, allowing for flexibility in input voltage choices.
The device is commonly used in power supplies, battery chargers, and other electronic circuits requiring adjustable voltage outputs. The LM317LMX/NOPB is packaged in a TO-252 package, which supports surface-mount applications and efficient heat dissipation. Its simplicity, reliability, and ease of use make it a popular choice among engineers and hobbyists for designing power supply circuits.

Features

The LM317LMX/NOPB is a popular adjustable linear voltage regulator that provides a stable output voltage range from 1.25V to 37V, with a maximum output current of 100 mA. Key features include:
1. Adjustable Output: The output voltage can be set using two external resistors, making it versatile for various applications.

2. Line Regulation: Offers excellent line regulation, typically 0.01% per volt, ensuring stable performance even with input voltage variations.
3. Load Regulation: Provides good load regulation, typically 0.1%, maintaining a stable output under varying load conditions.
4. Thermal Overload Protection: Built-in thermal protection helps prevent damage from overheating, enhancing reliability.
5. Short-Circuit Protection: Current limiting features protect the device and connected components from overcurrent conditions.
6. Safe Operating Area (SOA) Protection: Ensures the device operates within safe limits under all conditions.
7. Dropout Voltage: Typically around 3V, allowing the device to regulate even when the input voltage is close to the desired output.
These features make the LM317LMX/NOPB a robust choice for applications requiring variable voltage outputs and reliable regulation, such as power supplies, battery chargers, and adjustable power sources.

Package

The LM317LMX/NOPB is a voltage regulator from Texas Instruments. It is packaged in a surface-mount TO-252 (DPAK) package. This compact package is suitable for applications requiring efficient thermal performance and minimal board space. It is often used in various electronic devices for regulating voltage levels.

Pinout

The LM317LMX/NOPB is a three-terminal adjustable voltage regulator. It has a pin count of 3 and is commonly used to provide a stable output voltage that can be adjusted over a range. The function of each pin is as follows:
1. Input (Pin 1): This pin receives the unregulated input voltage. It should be connected to a power source that is higher than the desired output voltage.
2. Output (Pin 2): This pin provides the regulated output voltage. The output voltage is adjustable using a resistor pair connected between the output and the adjustment pin.
3. Adjust (Pin 3): This pin is used to adjust the output voltage. By connecting a resistor between the adjust pin and the output pin, and another between the adjust pin and ground, you can set the output voltage according to the formula: \( V_{\text{out}} = V_{\text{ref}} \times \left(1 + \frac{R_2}{R_1}\right) + I_{\text{ADJ}} \times R_2 \), where \( V_{\text{ref}} \) is typically 1.25V.
The LM317 is widely used for its ease of use and minimal external components.

Manufacturer

The LM317LMX/NOPB is manufactured by Texas Instruments. Texas Instruments (TI) is a global semiconductor company that designs and produces a wide range of integrated circuits and other semiconductor technologies. Founded in 1930 and headquartered in Dallas, Texas, TI is known for its innovation in the electronics industry, providing components that are used in a variety of electronic devices, from consumer electronics to industrial equipment. TI focuses on developing analog and embedded processing products and is a leader in the semiconductor industry.

Application

The LM317LMX/NOPB is a versatile adjustable voltage regulator used in various applications, including power supplies, battery chargers, LED drivers, and adjustable power adapters. It is employed in both consumer electronics and industrial settings for providing stable output voltage, precise current regulation, and overcurrent protection. Its ability to adjust output voltage makes it suitable for projects requiring variable voltage levels, such as lab equipment and test setups.

Equivalent

Equivalent products to the LM317LMX/NOPB, a linear voltage regulator, include:
1. L78M05: Linear regulator with fixed output.
2. LM1117: Offers similar adjustable voltage regulation.
3. NCP1117: Another adjustable voltage regulator.
4. UA78M33: Regulator with fixed 3.3V output.
5. LD1117: Adjustable regulator with similar functionality.
These alternatives provide similar functionality with varying output characteristics. Always verify pin configuration and electrical characteristics in datasheets when substituting.

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