LM317D2T-TR PMIC - Voltage Regulators - Linear by STMicroelectronics
LM317D2T-TR is a PMIC - Voltage Regulators - Linear from STMicroelectronics in TO-263-3 packaging. It is commonly reviewed for IC REG LINEAR POS ADJ 1.5A D2PAK. This page lists current TrustCompo stock, tier pricing, package data, datasheet access, compliance attributes, Hong Kong warehouse shipping options, payment confirmation, and RFQ options for buyers verifying this exact ordering code.
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4 certifications
ISO 9001
Quality management processes for more consistent sourcing and handling.
AS9120B
Aerospace-focused distribution controls for traceability and reliability.
ISO 14001
Environmental management discipline across warehouse and operating workflows.
ESD Control
Electrostatic handling standards to help protect sensitive components.
RFQ checklist
Order process
Confirm the core buying details for LM317D2T-TR before RFQ, PO release, and shipment planning.
1
Confirm MPN
Use the exact part number, manufacturer, package, and approval constraints in the RFQ.
2
Check stock and price
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3
Align documents
Confirm datasheet, CoC, traceability, lifecycle notes, and inspection scope when required.
4
Arrange shipment
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Before PO release
Part confirmation
Exact MPN confirmed: LM317D2T-TR
Package to verify: TO-263-3
Commercial confirmation
Live stock and lead time confirmed by RFQ
Final price and tax terms confirmed before PO release
Fulfillment & documents
Ship-from location: Hong Kong warehouse
Shipping method: DHL, FedEx, UPS, or buyer forwarder account
Product overview
Product overview
Review the sourcing context for LM317D2T-TR from STMicroelectronics, including product identity, application fit, package notes, and purchasing considerations.
The LM317D2T-TR is a versatile adjustable voltage regulator manufactured by STMicroelectronics. It is designed to provide a stable output voltage that can be adjusted from 1.25V to 37V, making it suitable for a wide range of applications, including power supplies, battery chargers, and other electronic circuits requiring a regulated voltage.
Key Features:
Adjustable Output Voltage: The LM317D2T-TR allows users to set the output voltage to their desired level using external resistors. This flexibility makes it ideal for custom applications.
Output Current: The device can deliver up to 1.5A of output current, which is sufficient for many low to medium power applications.
Thermal Overload Protection: The LM317D2T-TR includes built-in thermal protection, which prevents the device from overheating and ensures reliable operation under varying load conditions.
Short-Circuit Protection: This regulator is equipped with short-circuit protection, safeguarding the device and the connected load in case of a fault condition.
Low Dropout Voltage: The LM317D2T-TR features a low dropout voltage, typically around 3V at full load, which allows it to maintain regulation even when the input voltage is close to the output voltage.
Wide Input Voltage Range: The input voltage range for the LM317D2T-TR is from 3V to 40V, providing flexibility in power supply design.
Package Type: The LM317D2T-TR is available in a TO-220 package, which is a common choice for power devices due to its good thermal performance and ease of mounting.
Temperature Range: The device operates over a temperature range of -40°C to +125°C, making it suitable for industrial and automotive applications.
Applications:
Power Supply Circuits: The LM317D2T-TR is widely used in linear power supplies where adjustable output voltage is required.
Battery Chargers: Its ability to provide a stable output voltage makes it suitable for charging various types of batteries.
LED Drivers: The adjustable output can be used to drive LEDs at a constant current.
Regulated Power Sources: It can be used in circuits that require a stable voltage reference.
Electrical Characteristics:
Input Voltage (Vin): 3V to 40V
Output Voltage (Vout): Adjustable from 1.25V to 37V
Output Current (Iout): Up to 1.5A
Dropout Voltage (Vdrop): Typically 3V at full load
Line Regulation: Typically 0.01%/V
Load Regulation: Typically 0.1%/A
Conclusion:
The LM317D2T-TR from STMicroelectronics is a reliable and flexible adjustable voltage regulator that is widely used in various electronic applications. Its combination of features, including thermal and short-circuit protection, low dropout voltage, and a wide input voltage range, makes it a popular choice among engineers and designers looking for a robust solution for voltage regulation.
Technical parameters
Parameters
Compare grouped LM317D2T-TR parameters from STMicroelectronics, including package, series, key attributes, and technical values used for engineering and sourcing review.
Product Parameter
Output Configuration
Positive
Product Parameter
Protection Features
Over Current, Over Temperature
Product Parameter
Power Supply Rejection Ratio (PSRR)
80dB
Product Parameter
Number Of Regulators
1
Product Parameter
Voltage - Input (Max)
40V
Product Parameter
Power Supply Rejection Ratio
80dB ~ 65dB (120Hz)
LM317D2T-TR Product Parameter
Parameter
Value
Output Configuration
Specifies the topology of the output stage, such as push-pull, open collector, or half-bridge. This determines how the device drives loads and interfaces with external circuitry. Verify against the datasheet to ensure compatibility with your application's requirements.
Positive
Protection Features
Built-in safeguards that prevent damage from overcurrent, overvoltage, short circuit, or thermal overload. Compare these features to ensure the component meets your application's safety and reliability requirements. Always verify the specific protection mechanisms in the datasheet.
Over Current, Over Temperature
Power Supply Rejection Ratio (PSRR)
Measures how well the amplifier rejects variations in its power supply voltage, expressed in dB. A higher PSRR indicates better output stability against supply noise. Essential for audio, precision measurement, and automotive applications. Always compare PSRR values across frequencies in the datasheet.
80dB
Number Of Regulators
Specifies how many independent voltage regulator circuits are integrated in the component. Compare this when selecting multi-output power management ICs. Verify against the datasheet to ensure the regulator count matches your design requirements.
1
Voltage - Input (Max)
Specifies the highest input voltage the component can safely handle without damage or malfunction. Compare this value with your power supply output and any transient spikes. Always verify against the datasheet's absolute maximum ratings to ensure reliable operation.
40V
Power Supply Rejection Ratio
Indicates how well a component attenuates power supply noise from input to output. Compare values for stable operation in sensitive analog circuits. Verify against datasheet conditions, as PSRR varies with frequency and load.
80dB ~ 65dB (120Hz)
LM317D2T-TR Product Attribute
Parameter
Value
Part Status
Lifecycle status of the part, such as active or obsolete. Indicates availability and long-term support from the manufacturer. Check this before design-in to avoid last-time buys or supply disruptions. Verify with the datasheet or distributor for current status.
Active
REACH Status
Shows whether the component complies with the EU REACH regulation. Essential for legal market access in Europe. Check the manufacturer's latest statement to confirm that no substances of very high concern are present above the threshold.
REACH Unaffected
ECCN
Export Control Classification Number assigned by the U.S. government. Determines whether the component requires an export license. Essential for international trade compliance. Verify the ECCN with the manufacturer or supplier before shipping to avoid legal issues.
EAR99
Lead Free
Indicates whether the component is manufactured without lead, complying with RoHS and similar regulations. Check this attribute to ensure environmental compliance for your market. Verify against the datasheet for exact material declarations.
Lead Free
Mounting Type
Specifies how the component is attached to the PCB, such as through-hole or surface mount. This affects assembly processes, thermal performance, and mechanical strength. Buyers should verify compatibility with their manufacturing capabilities and design requirements.
Surface Mount
Factory Lead Time
Indicates the typical duration from order confirmation to shipment from the manufacturer's facility. This helps you plan production schedules and inventory. Verify current lead times with your distributor or supplier, as they may vary based on order quantity, product availability, and market conditions.
8 Weeks
Packaging
Indicates the form of delivery for the component, such as tape and reel, tube, or tray. This affects handling, storage, and assembly processes. Verify the packaging type matches your production requirements and equipment compatibility.
Tape & Reel (TR)
Categories
Lists the product categories or classifications assigned to this component, such as connectors, capacitors, or modules. This helps in filtering and comparing similar parts. Review the categories to ensure the component fits your application and to find alternative parts in the same class.
Integrated Circuits (ICs)
Terminal Form
Describes the physical configuration of the component's leads or pads, such as through-hole, surface mount, or gull-wing. This affects PCB layout, soldering process, and mechanical fit. Confirm compatibility with your assembly method and footprint.
GULL WING
Lifecycle Status
Current stage in the product's lifecycle, such as Active, Obsolete, or End of Life. This indicates availability and long-term supply risk. Check this before designing in a part to ensure it will be available for your product's production lifetime.
ACTIVE (Last Updated: 6 months ago)
Peak Reflow Temperature (Cel)
Maximum temperature during reflow soldering that the component can withstand. This is critical for solder joint reliability and preventing damage. Verify that the peak reflow temperature is compatible with your soldering profile and the component's moisture sensitivity level.
245
Weight
Specifies the physical weight of the electronic component, important for logistics, shipping cost, and mechanical design. Verify the exact weight in the datasheet or packaging information, as it may vary with packaging type and quantity.
2.012816mg
Packing Method
Specifies the packaging format for delivery, such as tube, reel, tray, or tape and reel. This affects handling, storage, and assembly processes. Verify the packing method against your production requirements and the datasheet to ensure compatibility with your pick-and-place equipment.
TR
Subcategory
A more specific classification within the main product category, such as 'Ceramic Capacitor' under 'Capacitors'. This helps narrow down search results and compare similar components. Use it to filter products with similar characteristics and intended applications.
Other Regulators
Sub-Categories
Indicates the specific product subcategories or classifications within the broader component family. Helps narrow down search results and identify the exact type of component needed for your design. Review the subcategory to ensure compatibility with your application.
PMIC - Voltage Regulators - Linear
Operating Temperature
Specifies the ambient temperature range within which the component reliably functions. Compare this with your application's thermal environment to ensure proper operation. Always verify against the datasheet for derating curves and maximum ratings.
0°C~125°C
Manufacturer
Identifies the company that designed and produced the component. Buyers often filter by manufacturer to ensure brand reliability, quality standards, and supply chain consistency. Verify the manufacturer against the datasheet and official packaging to avoid counterfeit parts.
STMicroelectronics
Output Type
Specifies the electrical form of the output signal, such as digital, analog, or open collector. This determines how the component interfaces with your circuit. Verify the output type against your system requirements and the datasheet to ensure proper signal compatibility and avoid logic level mismatches.
Adjustable
Package / Case
Physical package or case type of the component, defining its dimensions, mounting style, and thermal characteristics. Common types include SMD, through-hole, BGA, and QFN. Choose the package that fits your PCB layout and assembly process. Verify the exact package code in the datasheet for footprint compatibility.
TO-263-3, D2Pak (2 Leads + Tab), TO-263AB
Number Of Functions
Specifies the count of independent functions or channels integrated into a single component package. This helps engineers determine if the part can handle multiple signal paths or operations simultaneously. Verify against the datasheet to ensure the device meets your circuit's functional requirements.
1
Reflow Temperature-Max (S)
Maximum time the component can be exposed to the peak reflow temperature during soldering. Exceeding this duration may cause damage or degrade reliability. Ensure your soldering profile stays within this limit and check the datasheet for exact conditions.
30
Contact Plating
Specifies the metal coating applied to the contact surfaces of connectors, switches, or relays. This finish affects conductivity, corrosion resistance, and durability. Engineers should verify the plating material and thickness against the datasheet to ensure reliable performance in the intended environment.
Tin
Radiation Hardening
Indicates if the component is designed to withstand ionizing radiation in space, nuclear, or high-energy physics applications. Compare radiation-tolerant vs. radiation-hardened parts for mission-critical designs. Verify the total ionizing dose (TID) and single-event effect (SEE) ratings in the datasheet.
No
Mounting Type
Specifies how the component attaches to the PCB or assembly, such as surface mount, through-hole, or chassis mount. This affects soldering process, mechanical stability, and thermal performance. Verify compatibility with your board layout and assembly capabilities.
Surface Mount
Technology
Manufacturing technology or process used for the component, such as thin film, thick film, or semiconductor process. Affects performance, stability, and cost. Confirm the technology matches your application requirements and environmental conditions.
BIPOLAR
Number Of Pins
Total number of pins or contacts on the component. This determines the footprint and mating connector requirements. Always match the pin count to your PCB layout and connector specification to ensure proper electrical and mechanical connection.
3
Terminal Position
Position of the terminals on the package, such as dual-in-line, gull-wing, or J-lead. This affects PCB layout, soldering, and thermal performance. Engineers must ensure the terminal position matches the footprint and assembly capabilities of their manufacturing line.
SINGLE
Number Of Terminations
Indicates the total number of electrical connection points on the component, such as pins or pads. This is critical for PCB footprint design and assembly. Verify it matches the package specification to ensure proper soldering and connectivity.
2
Number Of Outputs
Specifies how many independent output channels the component provides. Compare this when selecting power supplies, drivers, or modules to ensure the device can drive all required loads. Always verify against the datasheet for exact output configuration.
1
Pin Count
Total number of pins or terminals on the component package. Essential for footprint design, PCB layout, and connector mating. Verify against the datasheet to ensure compatibility with your board and assembly process.
3
Terminal Pitch
Terminal pitch is the center-to-center distance between adjacent leads or pads on a component. It determines PCB layout compatibility and soldering feasibility. Verify against the datasheet to ensure your footprint matches the component's actual lead spacing.
2.54mm
Height
Physical height of the component, measured from the mounting surface to the topmost point. This dimension is critical for clearance in compact assemblies and for ensuring proper fit within enclosures. Always verify against the datasheet for tolerance and mounting considerations.
4.57mm
Min Input Voltage
Minimum voltage required at the input for the component to operate correctly. Below this level, the device may not function or may produce incorrect outputs. Verify that your power supply provides at least this voltage under all load conditions.
3V
Base Part Number
Identifies the core product family without package, grade, or option suffixes. Use this to compare equivalent components across manufacturers and to locate the primary datasheet. Verify the full ordering code against the manufacturer's specification before design-in.
LM317
Output Voltage
Specifies the regulated voltage level available at the output pin under specified load and input conditions. Compare this value with your circuit requirements and verify against the datasheet's tolerance and temperature derating.
37V
Max Output Voltage
Specifies the highest voltage the device can deliver at its output under specified conditions. Compare this limit with your application's supply and load requirements to ensure safe operation and avoid overvoltage damage.
37V
Minimum Output Voltage
Specifies the lowest output voltage the component can reliably provide under specified conditions. Compare this value with your circuit's minimum required voltage to ensure proper operation. Always verify against the datasheet's electrical characteristics and test conditions.
1.2V
Width
Physical width of the component body, typically in millimeters. Essential for PCB footprint design and mechanical fit. Verify against the datasheet to ensure proper clearance and compatibility with your board layout and enclosure.
9.35mm
Max Output Current
Specifies the highest continuous current the device can supply at its output without exceeding thermal or electrical limits. Compare this value with your load requirements and derating curves. Always verify against the datasheet for your operating conditions.
1.5A
Reference Voltage
Specifies the stable voltage output used as a benchmark for the component's operation. Compare this value when selecting voltage references or regulators. Always verify against the datasheet for accuracy and temperature stability.
1.3V
Length
Specifies the physical length of the component body, typically in millimeters. This dimension is critical for PCB layout and mechanical fit. Verify against the datasheet to ensure proper clearance and alignment in your design.
10.24mm
Voltage - Output (Max)
Specifies the highest output voltage the component can provide under specified conditions. Compare this value with your circuit requirements to ensure compatibility. Always verify against the datasheet for exact limits and tolerances.
37V
Manufacturer'S Part No.
The unique part number assigned by the original component manufacturer. Use this to cross-reference datasheets, verify specifications, and ensure the exact component matches your design requirements. Always confirm the number against the manufacturer's official documentation.
This code indicates the terminal finish material per JESD-609 standard. It helps identify the plating type for soldering compatibility and environmental compliance. Check the datasheet for the exact code and its meaning.
e3
Moisture Sensitivity Level (MSL)
Indicates the floor life of a component before it must be baked prior to soldering. Higher levels require stricter handling and shorter exposure times. Verify the MSL rating in the datasheet to ensure proper storage and assembly conditions.
1 (Unlimited)
RoHS Status
Indicates whether the component complies with the EU RoHS directive restricting hazardous substances. Buyers should verify this status for regulatory compliance and market access. Check the datasheet or certificate for exact compliance details.
ROHS3 Compliant
REACH SVHC
Indicates whether the product contains substances of very high concern as per the REACH regulation. Buyers should verify this for compliance with EU environmental standards, especially when exporting to Europe. Check the manufacturer's declaration or datasheet for accurate SVHC status.
No SVHC
HTSUS
Harmonized Tariff Schedule of the United States code for customs classification. Essential for import/export documentation and duty calculation. Verify the correct code with a trade specialist to avoid customs delays.
8542.39.0001
JESD-30 Code
JEDEC standard code that defines the package outline and dimensions. Use it to verify physical compatibility and footprint before PCB design. Compare with the datasheet to ensure the component meets your assembly and manufacturing requirements.
R-PSSO-G2
ECCN Code
Export Control Classification Number assigned by the U.S. Commerce Department. It determines export licensing requirements for electronic components. Verify the ECCN against the manufacturer's datasheet or export compliance documentation before shipping internationally.
EAR99
Datasheet preview
Datasheet PDF viewer
Preview the LM317D2T-TR datasheet from STMicroelectronics to check package, electrical characteristics, application notes, and document evidence before RFQ.
No public product notice document is currently displayed for LM317D2T-TR. Confirm PCN, PDN, EOL, date code, and lifecycle status during RFQ before production purchase.
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Targeted answers for buyers verifying the exact LM317D2T-TR ordering code, packaging, stock, datasheet, and replacement path.
What does LM317D2T-TR mean?
LM317D2T-TR is the exact ordering code listed for a PMIC - Voltage Regulators - Linear component from STMicroelectronics. The current package reference is TO-263-3, with listed context including IC REG LINEAR POS ADJ 1.5A D2PAK. Buyers should use the full code when requesting stock, price, datasheet, or compliance confirmation.
Is LM317D2T-TR the same as LM317D2T?
LM317D2T-TR may share the same base part family as LM317D2T, but the suffix can identify ordering, reel, tape, packing, or logistics details. Confirm the TO-263-3 package, manufacturer code from STMicroelectronics, datasheet ordering table, and reel quantity before treating the two codes as interchangeable.
What package is LM317D2T-TR supplied in?
LM317D2T-TR is currently listed with package reference TO-263-3 from STMicroelectronics. Buyers should confirm the manufacturer package drawing, footprint, pinout, tape-and-reel details, and receiving requirements before approval.
Is LM317D2T-TR currently available?
LM317D2T-TR is currently marked with stock availability on this page. Before ordering, confirm the package (TO-263-3), listed stock (94353), available quantity (29424), required quantity, lead time, final price, compliance needs, and exact ordering code match through RFQ.
Where can I compare LM317D2T-TR alternatives?
A mapped alternative list is not currently published for LM317D2T-TR. Send an RFQ with the target quantity, package constraints, and approval requirements so TrustCompo can help review credible replacement options.