Top

Product details

Parameters

Output options Adjustable Output Iout (Max) (A) 0.1 Vin (Max) (V) 35 Vin (Min) (V) 3.75 Vout (Max) (V) 32 Vout (Min) (V) 1.2 Noise (uVrms) 30 Iq (Typ) (mA) 1.5 Thermal resistance θJA (°C/W) 52 Load capacitance (Min) (µF) 0 Rating Catalog Regulated outputs (#) 1 Features Accuracy (%) 4 PSRR @ 100 KHz (dB) 38 Dropout voltage (Vdo) (Typ) (mV) 2000 Operating temperature range (C) -40 to 125, 0 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

SOIC (D) 8 19 mm² 4.9 x 3.9 SOIC (D) 8 19 mm² 3.91 x 4.9 SOT-89 (PK) 3 18 mm² 4.5 x 4.095 TO-92 (LP) 3 19 mm² 5.2 x 3.68 TSSOP (PW) 8 19 mm² 3 x 6.4 open-in-new Find other Linear regulators (LDO)

Features

  • Output Voltage Range Adjustable 1.25 V to 32 V
    When Used With External Resistor Divider
  • Output Current Capability of 100 mA
  • Input Regulation Typically 0.01% Per Input-Voltage
    Change
  • Output Regulation Typically 0.5%
  • Ripple Rejection Typically 80 dB
  • For Higher Output Current Requirements,
    See LM317M (500 mA) and LM317 (1.5 A)
  • APPLICATIONS
    • Electronic Points of Sale
    • Medical, Health, and Fitness Applications
    • Printers
    • Appliances and White Goods
    • TV Set-Top Boxes
  • All other trademarks are the property of their respective owners

    open-in-new Find other Linear regulators (LDO)

    Description

    The LM317L device is an adjustable, 3-terminal, positive-voltage regulator capable of supplying 100 mA over an output-voltage range of 1.25 V to 32 V. It is exceptionally easy to use and requires only two external resistors to set the output voltage.

    open-in-new Find other Linear regulators (LDO)
    Download

    Technical documentation

    = Top documentation for this product selected by TI
    No results found. Please clear your search and try again. View all 23
    Type Title Date
    * Datasheet LM317L 3-Terminal Adjustable Regulator datasheet (Rev. E) Oct. 22, 2014
    Application notes A Topical Index of TI LDO Application Notes (Rev. F) Jun. 27, 2019
    Technical articles LDO basics: capacitor vs. capacitance Aug. 01, 2018
    Technical articles LDO Basics: Preventing reverse current Jul. 25, 2018
    Technical articles LDO basics: introduction to quiescent current Jun. 20, 2018
    Application notes LDO Noise Demystified (Rev. A) Aug. 09, 2017
    Application notes LDO PSRR Measurement Simplified (Rev. A) Aug. 09, 2017
    Technical articles LDO basics: noise – part 1 Jun. 14, 2017
    Application notes AB-12 Wide Adjustable Range PNP Voltage Regulator (Rev. B) May 06, 2013
    Application notes AN-103 LM340 Series Three Terminal Positive Regulators (Rev. A) May 06, 2013
    Application notes AN-1148 Linear Regulators: Theory of Operation and Compensation (Rev. B) May 06, 2013
    Application notes AN-42 IC Provides On-Card Regulation for Logic Circuits (Rev. B) May 06, 2013
    Application notes AN-178 Applications for an Adjustable IC Power Regulator (Rev. B) May 05, 2013
    Application notes AN-182 Improving Power Supply Reliability with IC Power Regulators (Rev. B) May 05, 2013
    Application notes Method For Cal Output Voltage Tolerances in Adj Regs (Rev. A) May 05, 2013
    Application notes AN-1061 Power Conversion in Line-Powered Equipment (Rev. B) Apr. 23, 2013
    Application notes High-Efficiency Reg has Low Drop-Out Voltage (Rev. B) Apr. 23, 2013
    Application notes Packaging Limits Range of Linear Regulators May 08, 2010
    Application notes Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A) Jun. 04, 2008
    Application notes A New Production Technique for Trimming Voltage Regulators Oct. 03, 2002
    Application notes Adjustable 3-Terminal Regulator for Low-Cost Battery Charging Systems Oct. 03, 2002
    Application notes High Stability Regulators Oct. 03, 2002
    Application notes Understanding the Terms and Definitions of LDO Voltage Regulators Oct. 21, 1999

    Design & development

    For additional terms or required resources, click any title below to view the detail page where available.

    Design tools & simulation

    SIMULATION MODELS Download
    SNVMAW3.ZIP (2 KB) - PSpice Model
    SIMULATION MODELS Download
    SNVMAW4.ZIP (65 KB) - PSpice Model
    SIMULATION TOOLS Download
    PSpice® for TI design and simulation tool
    PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
    Features
    • Leverages Cadence PSpice Technology
    • Preinstalled library with a suite of digital models to enable worst-case timing analysis
    • Dynamic updates ensure you have access to most current device models
    • Optimized for simulation speed without loss of accuracy
    • Supports simultaneous analysis of multiple products
    • (...)

    Reference designs

    REFERENCE DESIGNS Download
    94% Peak efficiency, 150W norm, 240W peak industrial AC/DC power supply with CC/CV reference design
    TIDA-010038 — This compact, high efficiency, 24V DC, 150W nominal, 240W peak output at 230VAC reference design is targeted for industrial AC/DC power supplies. The circuit consists of a frontend transition mode (TrM) power factor correction(PFC) circuit based on the UCC28056, followed by a robust LLC stage for an (...)
    document-generic Schematic document-generic User guide
    REFERENCE DESIGNS Download
    75V/10A Protected Full-Bridge Power Stage Reference Design for Bipolar Stepper Drives
    TIDA-00210 — Stepper drives are used in many applications operating typically from 12VDC to 48VDC. TI offers a rich family of stepper motor driver solutions with industry standard step/direction and parallel control interfaces.

    For applications which require higher torque and power, often voltages above 48VDC (...)
    document-generic Schematic document-generic User guide
    REFERENCE DESIGNS Download
    75V/10A Protected Full-Bridge Power Stage Reference Design for Brushed DC Drives
    TIDA-00365 — Low voltage brushed DC drives are used in many applications. TI offers a rich family of brushed DC motor driver solutions with flexible control interface options for one or more brushed DC motors up to 60V.  For applications which require higher torque and power, often voltages above 60VDC are (...)
    document-generic Schematic document-generic User guide
    REFERENCE DESIGNS Download
    6A, 0.05% Current Accuracy Power Solution for Battery Test Systems Reference Design
    PMP15043 — This reference design circuit introduces a highly accurate, bi-directional current power solution used in battery test systems (BTS). The maximum current capability is 6A with lower than 0.05% full scale accuracy. Controlling through a logic pin, the circuit can be used to charge or discharge a (...)
    document-generic Schematic document-generic User guide
    REFERENCE DESIGNS Download
    Programmable output Constant Voltage - Constant Current (CVCC) Quasi-Resonant Flyback charger
    PMP8955 This industrial charger reference design uses the LM5023 Quasi-Resonant Flyback controller to implement a 120VAC input design with CVCC output configured by microcontroller PWM control from 10 to 22.5V and output current from 200mA to 2A.
    document-generic Schematic document-generic User guide
    REFERENCE DESIGNS Download
    36-60Vin, 350W Slow Drain Modulation Power Converter with PSFB ZTE and HSHB Reference Design
    PMP7246 This is a 350W High Speed Full Bridge Phase Shift ZVT Synchronous Rectification DC/DC reference design. It is built for telecom applications to supply a RF Power Amplifier stage. The design is utilizing UCC28950 voltage mode forward and average current limitation backward converter (two quadrant (...)
    document-generic Schematic document-generic User guide

    CAD/CAE symbols

    Package Pins Download
    SOIC (D) 8 View options
    SOT-89 (PK) 3 View options
    TO-92 (LP) 3 View options
    TSSOP (PW) 8 View options

    Ordering & quality

    Support & training

    TI E2E™ forums with technical support from TI engineers

    Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

    If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

    Videos

    Related videos