LM317KTTR Texas Instruments Integrated Circuit (TO-XXX (Inc. DPAK)) In Stock
LM317KTTR is a 1.5A adjustable positive linear voltage regulator with 1.25V to 37V output range and 40V maximum input voltage. It offers tight 1% output voltage accuracy and excellent line/load regulation. From $0.44, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- TO-XXX (Inc. DPAK)
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- LM317KTTR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4375(MOQ 1)
- Temp Range
- ?°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LM317KTTR?
- 1.5A continuous output current with adjustable output voltage from 1.25V to 37V
- Low dropout voltage of 2V typical for efficient linear regulation
- Input voltage range up to 40V maximum for versatile power supply designs
- High output voltage accuracy of 1% for precision regulation applications
- Built-in thermal overload and short-circuit current limiting protection
What is LM317KTTR used for?
The LM317KTTR is widely used in adjustable bench power supplies, battery charging circuits, and regulated DC-DC power conversion applications. It suits consumer electronics, industrial control systems, and lab instruments requiring stable regulated voltages. Its adjustability makes it ideal for motor drive bias supplies, LED current regulators, and precision reference voltage generation.
What are the specifications of LM317KTTR?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Adjustability | ADJUSTABLE |
| Dropout Voltage1-Nom | 2V |
| Input Voltage-Max | 40V |
| Input Voltage-Min | 3V |
| Input-Output Voltage Differential-Max | 40V |
| Input-Output Voltage Differential-Min | 3V |
| JESD-30 Code | R-PSSO-G3 |
| JESD-609 Code | e3 |
| Line Regulation-Max (%/V) | 0.07 |
| Load Regulation-Max(%) | 1.5% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Output Current1-Max | 1.5A |
| Output Voltage1-Max | 37V |
| Output Voltage1-Min | 1.25V |
| Output Voltage1-Nom | 37V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SMSIP3H,.55TB |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 245 |
| Qualification Status | Not Qualified |
| Regulator Type | ADJUSTABLE POSITIVE SINGLE OUTPUT STANDARD REGULATOR |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 2.54mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Voltage Tolerance-Max | 5% |
| Package | TO-XXX (Inc. DPAK) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Mainland China, Malaysia |
Where can I find the LM317KTTR datasheet?
LM317KTTR Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM317KTTR?
Compatible alternatives and drop-in replacements for LM317KTTR:
Regulator, 1.25V Min, 37V Max, BIPolar, PSSO3
Frequently Asked Questions
What is the output voltage range of the LM317KTTR?
The LM317KTTR provides an adjustable output voltage from 1.25V to 37V, set by two external resistors. It requires a minimum input-to-output differential of 3V and supports a maximum input voltage of 40V, making it suitable for a wide range of power supply designs.
What is the maximum output current of the LM317KTTR?
The LM317KTTR can supply up to 1.5A of continuous output current. It includes built-in thermal shutdown and current limiting protection to prevent damage under fault conditions, ensuring reliable operation in demanding applications.
What package does the LM317KTTR come in, and how does it compare to other LM317 variants?
The LM317KTTR is available in the TO-220 package (TO-XXX family) in tape-and-reel format, ideal for automated assembly. Compared to the LM317T (single unit) or LM317DCY (SOT-223), the KTTR suffix offers the same 1.5A rating in a through-hole-compatible package with enhanced heat dissipation for higher power applications.
What are common applications for the LM317KTTR?
The LM317KTTR is commonly used in adjustable power supplies, battery chargers, LED current regulators, motor speed controllers, and precision voltage reference circuits. Its wide input range of 3V to 40V and 1.5A output make it a versatile choice for both consumer and industrial electronics designs.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.8750 | $0.88 |
| 7+ | $0.7000 | $4.90 |
| 25+ | $0.6460 | $16.15 |
| 30+ | $0.4375 | $13.13 |
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