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LM317LB
LM317LB is a versatile regulator with the ability to adjust voltage output
LM317LB
LM317LB is a versatile regulator with the ability to adjust voltage output
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LM317LB DataSheet
Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!
Details
The LM317LB is a low voltage regulator IC manufactured by Texas Instruments. It is a monolithic integrated circuit that can produce an output voltage ranging from 1.2V to 37V with a maximum output current of 100mA. The LM317LB is designed to provide a regulated output voltage from an unregulated input voltage source.The LM317LB is housed in a small 3-pin TO-92 package, making it suitable for compact electronic devices. It has a low minimum operating voltage of 1.5V, making it ideal for battery-powered applications where power efficiency is crucial. The device also features thermal overload protection, which prevents damage to the IC in case of excessive heat buildup.The LM317LB is a versatile regulator that can be used in a wide range of applications, including power supplies, battery chargers, voltage converters, and voltage stabilizers. It is commonly used in audio amplifiers, sensor circuits, and other low-power electronic devices.
Key Features
- Adjustable output voltage
- Current limiting and thermal overload protection
- Range of output voltage from 1.25V to 37V
- Output current up to 1.5A
- Low standby current drain
- Available in TO-220, TO-263 and DPAK packages
Application
- Variable voltage regulator for electronic circuits
- Battery chargers and power supplies
- LED drivers and constant current sources
- Adjustable power supplies for audio amplifiers
- Solar panel regulators
- Automotive voltage regulators
- Temperature control circuits
- Instrumentation amplifiers and sensors
- Medical devices and equipment
- Industrial automation and control systems
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Rohs Code | No | Part Life Cycle Code | Obsolete |
| Part Package Code | TO-92 | Pin Count ! | 3 |
| Reach Compliance Code | not_compliant | ECCN Code | EAR99 |
| HTS Code ! | 8542.39.00.01 | Adjustability | ADJUSTABLE |
| Dropout Voltage1-Nom | 3 V | Input-Output Voltage Differential-Max | 40 V |
| Input-Output Voltage Differential-Min | 3 V | JESD-30 Code | O-PBCY-T3 |
| JESD-609 Code | e0 | Line Regulation-Max (%/V) | 0.07 |
| Load Regulation-Max(%) | 1.5% | Number of Functions | 1 |
| Number of Outputs | 1 | Number of Terminals | 3 |
| Operating Temperature TJ-Max | 125 °C | Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.1 A | Output Voltage1-Max | 37 V |
| Output Voltage1-Min | 1.2 V | Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SIP3,.1,50 | Package Shape | ROUND |
| Package Style | CYLINDRICAL | Packing Method | RAIL |
| Qualification Status ! | Not Qualified | Regulator Type | ADJUSTABLE POSITIVE SINGLE OUTPUT STANDARD REGULATOR |
| Surface Mount ! | NO | Technology | BIPOLAR |
| Terminal Finish | TIN LEAD | Terminal Form ! | THROUGH-HOLE |
| Terminal Pitch ! | 1.27 mm | Terminal Position | BOTTOM |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is LM317LB?
The LM317LB is a three-terminal adjustable positive voltage regulator integrated circuit (IC) designed by Texas Instruments. It is capable of providing an output voltage range from 1.25V to 37V with a load current of up to 100mA. The LM317LB is commonly used in various power supply and voltage regulation applications.
How Does LM317LB Work?
The LM317LB works by using an adjustable voltage divider and an internal reference voltage to maintain a stable output voltage. By adjusting the resistance of the voltage divider, the output voltage can be set to the desired value within the specified range. The LM317LB also includes thermal overload protection and current limiting to ensure safe operation.
How Many Pins does LM317LB have and What are the Functions of the Pinout Configuration?
The LM317LB is housed in a 3-lead TO-92 (Transistor Outline 92) package. The pinout configuration includes:
- Input: Input voltage pin.
- Output: Regulated output voltage pin.
- Adjust: Adjustable pin for setting the output voltage.
What are the Pros and Cons of LM317LB?
Pros:
- Adjustable Output: Provides flexibility to set the output voltage as required.
- Thermal Overload Protection: Includes built-in protection against thermal overload, enhancing reliability.
- Simple Design: Requires minimal external components for basic voltage regulation applications.
- Wide Voltage Range: Capable of regulating output voltages from 1.25V to 37V, offering versatility.
- Low Cost: Economical and widely available for various voltage regulation needs.
Cons:
- Low Current Rating: Limited to a maximum output current of 100mA, restricting use in high-current applications.
- Heat Dissipation: May require a heat sink for efficient dissipation of heat at higher output voltages and currents.
- Dropout Voltage: Requires a higher input voltage than the desired output voltage, leading to higher power dissipation in some applications.
Are There Any Equivalents/Alternatives to LM317LB for Recommendation?
- The LM117 from Texas Instruments is a pin-to-pin compatible adjustable voltage regulator with higher load current capability.
- Alternatives to the LM317LB include the LM350 and LM338 adjustable voltage regulators, which offer higher output current ratings.
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