LM317AT
- Part number
- LM317AT
- Manufacturer
- Texas Instruments
- Package
- TO-220
- Status
- Active
- Stock
- Available / RFQ
- Price
- $3.50
- Year / date code
- 2025
View on SJ Chip · Request a quote
Product Overview
LM317AT (Texas Instruments, TO-220) — V REG ADJ +1.2/37V, TO-220-3, 317; Primary Input Voltage:40V; Output Voltage Min:1.2V; Output Voltage Max:37V; Dropout Voltage Vdo:2V; Voltage
Technical Specifications
- Part Number
- LM317AT
- Manufacturer
- Texas Instruments
- Series
- LM317A
- Package / Case
- TO-220
- Package Family
- TO
- Pin / Ball Count (from marking)
- 220
- Lifecycle Status
- Active
- Category
- Power Management
- Mounting Type
- Surface Mount (SMT)
Electrical Characteristics
- Device Class
- DC-DC / LDO / power IC
- Input / Output Range
- Confirm VIN, VOUT, and current limit in the datasheet
- Switching / Topology
- Buck, boost, LDO, or controller — not drop-in across families
- Thermal
- PowerPAD / exposed pad soldering is often required for rated current
- Package Constraint
- TO-220 thermal land and pinout must match the layout
Package Information
- Package
- TO-220
- Package Family
- TO
- Mounting
- Surface Mount (SMT)
- Terminal Count (parsed)
- 220
- Outline Note
- Package marking on this page is for sourcing reference. Confirm body size, pitch, and land pattern from the manufacturer datasheet before layout.
Applications
LM317AT is used on board power rails, industrial 12 V/24 V supplies, and point-of-load converters. Confirm VIN/VOUT, current, and the TO-220 thermal pad before layout. Nearby bucks/LDOs need compensation and footprint review.
Procurement notes
Confirm the full ordering code, package (TO-220), and quantity on RFQ. SJ Chip replies with stock, condition, and lead time. Nearby MPNs are for evaluation only.
Compare Similar Parts (LM317A)
- LM317AT/NOPB · TO-220
- LM317AH · IC
- LM317AEMPX · SOT-223
- LM317AEMP/N0PB · IC
- LM317AHP · CAN
- LM317AMDT · SOP-8
- LM317AEMP · DIP-64
- LM317AMDTX · IC
- LM317AEMP/NOPB · SOT-89
- LM317AMDT/NOPB · TO-252
- LM317AMDTX/NOPB · SOT-23-6
- LM317AEMPX/NOPB · SOT-223
Potential Alternatives (TO-220)
- LM2903DR · TO-220
- LM2596T-12 · TO-220
- LM2576T-12 · TO-220
- LM2576T-5.0 · TO-220
- LM2576T-5.0/NOPB · TO-220
- TLV1117IKCS · TO-220
- LM2439T · TO-220
- LM1084IT-ADJ/NOPB · TO-220
- LM1875T/NOPB · TO-220
- LM2575HVT-ADJ/NOPB · TO-220
- CSD18534KCS · TO-220
- SN74LVC1G3208DCKR · TO-220
FAQ
Where to buy LM317AT?
You can request LM317AT from SJ Chip via the RFQ form on this page or the site-wide RFQ. We confirm manufacturer (Texas Instruments), package, quantity, and lead time on the quotation.
Is LM317AT available?
Listed inventory shows 6 pcs. Lot, date code, and shippable quantity are confirmed on RFQ — treat the listing as availability to quote, not a guaranteed cart ship.
What is the package of LM317AT?
The sourcing listing shows package TO-220. Always verify body size, pitch, and land pattern against the Texas Instruments datasheet before PCB layout.
What are alternatives to LM317AT?
Potential alternatives include LM317AT/NOPB, LM317AH, LM317AEMPX and other same-series or same-package listings — all require datasheet and pinout checks. These are similar stock for evaluation, not automatic drop-in replacements.
Sourcing information
| Part Number | LM317AT |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TO-220 |
| Description | V REG ADJ +1.2/37V, TO-220-3, 317; Primary Input Voltage:40V; Output Voltage Min:1.2V; Output Voltage Max:37V; Dropout Voltage Vdo:2V; Voltage |
| Availability | Listed inventory: 6 pcs — confirm lot, date code, and quantity on RFQ |
| RFQ | Submit the full part number and quantity through the RFQ form |
| Lead Time | Lead time is confirmed on the quotation after RFQ. In-stock conventional lots often ship in 3–5 working days from Hong Kong; special, allocation, or obsolete lines are quoted separately. |
| Condition | Condition is stated on the quotation/PI (new, surplus, or EOL). Lots are inspected before shipment. |