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LM317LBD

LM317LBD: Regulator with Adjustable Voltage Capability

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Overview of LM317LBD

The LM317LBD is an adjustable 3-terminal positive voltage regulator capable of supplying more than 100 mA over an output voltage range of 1.25V to 37V. It requires only two external resistors to set the output voltage.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

  • ADJ: Adjust Pin
  • OUTPUT: Regulated Output
  • INPUT: Unregulated Input

Circuit Diagram

Incorporate a circuit diagram that illustrates the connections and operation of the LM317LBD for a more visual representation.

Key Features

  • Adjustable Output: The LM317LBD allows for adjustable output voltage via external resistors, providing flexibility in various applications.
  • Internal Thermal Overload Protection: The regulator includes internal thermal overload protection and safe operating area protection, enhancing its reliability.
  • Output Current in Excess of 100 mA: Capable of supplying more than 100 mA of output current, suitable for powering a wide range of electronic devices.
  • Low Quiescent Current: The LM317LBD exhibits low quiescent current, contributing to energy efficiency in powered systems.

Note: For detailed technical specifications, please refer to the LM317LBD datasheet.

Application

  • Power Supply: The LM317LBD is commonly used as an adjustable voltage regulator in power supply circuits for various electronics applications.
  • Battery Charging: It can be utilized in battery charging circuits to regulate and control the charging voltage for different types of batteries.
  • Adjustable Voltage Source: This regulator is suitable for generating adjustable voltage sources for testing and prototyping electronic circuits.

Functionality

The LM317LBD provides a stable output voltage with high accuracy and reliability, making it an ideal choice for voltage regulation in electronic systems.

Usage Guide

  • Input Voltage: Connect the unregulated input voltage to the INPUT pin.
  • Output Voltage Adjustment: Use external resistors connected to the ADJ pin to set the desired output voltage.
  • Output Connection: The regulated output voltage can be obtained from the OUTPUT pin.

Equivalent

For similar voltage regulation capabilities, consider these alternatives to the LM317LBD:

  • LM338: A higher current variant of the LM317, capable of delivering up to 5A of load current.
  • LM350: Another adjustable 3-terminal positive voltage regulator with a higher current output and a wider operating temperature range.
  • LM2940: A low dropout voltage regulator with similar features but designed for applications with low input to output voltage differentials.

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Product Category Linear Voltage Regulators RoHS N
Mounting Style SMD/SMT Package / Case SOIC-8
Number of Outputs 1 Output Polarity Positive
Output Voltage 1.2 V to 37 V Output Current 100 mA
Output Type Adjustable Input Voltage, Min 40 V
Input Voltage, Max 40 V Minimum Operating Temperature - 40 C
Maximum Operating Temperature + 125 C Load Regulation 0.5 %
Line Regulation 0.07 %/V Brand onsemi
Height 1.5 mm (Max) Length 5 mm (Max)
Product Type Linear Voltage Regulators Subcategory PMIC - Power Management ICs
Width 4 mm (Max) Unit Weight 0.019048 oz

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