SNVSAY1 June   2017 LM317HV-MIL

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Load Regulation
      2. 7.3.2 Current Limit
    4. 7.4 Device Functional Modes
      1. 7.4.1 External Capacitors
      2. 7.4.2 Protection Diodes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1  1.25-V to 45-V High Voltage Adjustable Regulator
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
      2. 8.2.2  Digitally Selected Outputs
      3. 8.2.3  Logic Regulator (5-V) With Electronic Shutdown
      4. 8.2.4  Slow Turnon 15-V Regulator
      5. 8.2.5  Adjustable Regulator With Improved Ripple Rejection
      6. 8.2.6  High Stability 10-V Regulator
      7. 8.2.7  High Current Adjustable Regulator
      8. 8.2.8  Emitter Follower Current Amplifier
      9. 8.2.9  1-A Current Regulator
      10. 8.2.10 Common Emitter Amplifier
      11. 8.2.11 Low-Cost, 3-A Switching Regulator
      12. 8.2.12 Adjustable Multiple On-Card Regulators With Single Control
      13. 8.2.13 AC Voltage Regulator
      14. 8.2.14 12-V Battery Charger
      15. 8.2.15 Adjustable 4-A Regulator
      16. 8.2.16 Current Limited 6-V Charger
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Related Links
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • Up to 60 V Input to Output Differential
  • 1.5-A Output Current
  • Line Regulation 0.01%/V (Typical)
  • Load Regulation 0.1% (Typical)
  • 80-dB Ripple Rejection (Typical)
  • Internal Short-Circuit Current Limiting Protection
  • Thermal Overload Protection
  • 0 to 125°C Operating Temperature Range

2 Applications

  • Industrial Power Supplies
  • PLC Systems
  • Factory Automation Systems
  • Building Automation Systems
  • Battery Charger

1.2-V to 50-V Adjustable Regulator With High Voltage Input

LM317HV-MIL typapp1.png
*Needed if device is more than 6 inches from filter capacitors. .
†Optional—improves transient response
†† LM317HV-MIL eq1_VOUT_SNVS773.gif

3 Description

The LM317HV-MIL is an adjustable 3-terminal positive voltage regulator capable of supplying 1.5 A or more currents over a 1.25-V to 57-V output voltage range. It requires only two external resistors to set the output voltage. The LM317HV-MIL is packaged in standard transistor packages that are easily mounted and handled.

The LM317HV-MIL offers overload protection like current limit, thermal overload protection and safe area protection, which make the device blowout proof. The overload protection circuitry remains fully functional even if the adjustment terminal is disconnected.

Typically, no capacitors are needed unless the device is situated more than 6 inches from the input filter capacitors, in which case an input bypass is needed. An optional output capacitor can be added to improve transient response. The adjustment terminal can be bypassed to achieve very high ripple rejection ratios which are difficult to achieve with standard 3-terminal regulators.

Since the regulator is floating and sees only the input-to-output differential voltage, supplies of several hundred volts can be regulated as long as the maximum input to output differential is not exceeded, or in other words, do not short the output to ground.

By connecting a fixed resistor between the adjustment and output, the LM317HV-MIL can also be used as a precision current regulator. Supplies with electronic shutdown can be achieved by clamping the adjustment terminal to ground, which programs the output to 1.25 V where most loads draw little current.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
LM317HV-MIL TO-39 (3) 8.255 mm × 8.255 mm
TO-3 (2) 19.507 mm × 19.507 mm
TO-220 (3) 14.986 mm × 10.16 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

4 Revision History

DATE REVISION NOTES
June 2017 * Initial Release