SLVS297R April   2000  – May 2026 LM317M , LM317MQ

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics (Both Legacy and New Chip)
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Current Limit
      2. 6.3.2 Dropout Voltage (VDO)
      3. 6.3.3 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Normal Operation
      2. 6.4.2 Dropout Operation
  8. 7 Applications and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1  Input and Output Capacitor Requirements (Legacy Chip)
        2. 7.2.2.2  Input and Output Capacitor Requirements (New Chip)
        3. 7.2.2.3  Feedback Resistors
        4. 7.2.2.4  Adjustment Pin Capacitor
        5. 7.2.2.5  Protection Diodes
        6. 7.2.2.6  Overload Recovery
        7. 7.2.2.7  Estimating Junction Temperature
        8. 7.2.2.8  Polarity Reversal Protection
        9. 7.2.2.9  Reverse Current
        10. 7.2.2.10 Power Dissipation (PD)
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Development Support
        1. 8.1.1.1 Evaluation Module
      2. 8.1.2 Device Nomenclature
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.4.1 Normal Operation

The device OUTPUT pin regulates to 1.25V greater than the ADJUST pin under the following conditions:

  • The input voltage is greater than the nominal output voltage plus the dropout voltage (VOUT(nom) + VDO).
  • The output current is less than the current limit (IO < ICL).
  • The device passes the bias current to the OUTPUT pin. The load or feedback consumes this minimum current for regulation.
  • The device junction temperature is greater than –40°C and less than +125°C.