SNVS780E May   1998  – December 2016 LM337L

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 Output Voltage Adjustment
    4. 7.4 Device Functional Modes
      1. 7.4.1 Protection Diodes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 1.2-V to 25-V 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 Regulator With Trimmable Output Voltage
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
  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 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

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6 Specifications

6.1 Absolute Maximum Ratings

See (1)(2)
MIN MAX UNIT
Input-output voltage differential 40 V
Power dissipation Internally Limited
Storage temperature, Tstg –55 150 °C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and specifications.

6.2 ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1)(2) ±1500 V
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. Pins listed as ±1500 V may actually have higher performance.
(2) Human-body model, 1.5k Ω in series with 100 pF.

6.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
Operating junction temperature –25 125 °C

6.4 Thermal Information

THERMAL METRIC(1) LM337L UNIT
D (SOIC) LP (TO-92)
8 PINS 3 PINS
RθJA Junction-to-ambient thermal resistance 111.3 156.9 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 56.1 80.2 °C/W
RθJB Junction-to-board thermal resistance 51.9 — °C/W
ψJT Junction-to-top characterization parameter 10.6 24.7 °C/W
ψJB Junction-to-board characterization parameter 51.3 136.2 °C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report.

6.5 Electrical Characteristics(1)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Line regulation(2) TA = 25°C, 3 V ≤ |VIN – VOUT| ≤ 40 V 0.01 0.04 %/V
Load regulation(2) TA = 25°C, 5 mA ≤ IOUT ≤ IMAX 0.1% 0.5%
Thermal regulation TA = 25°C, 10-ms Pulse 0.04 0.2 %/W
Adjustment pin current 50 100 μA
Adjustment pin current change 5 mA ≤ IL ≤ 100 mA, 3 V ≤ |VIN – VOUT| ≤ 40 V 0.2 5 μA
Reference voltage 3 V ≤ |VIN – VOUT| ≤ 40 V, 10 mA ≤ IOUT ≤ 100 mA, P ≤ 625 mW 1.2 1.25 1.3 V
Line regulation(2) 3 V ≤ |VIN – VOUT| ≤ 40 V 0.02 0.07 %/V
Load regulation(2) 5 mA ≤ IOUT ≤ 100 mA 0.3% 1.5%
Temperature stability TMIN ≤ Tj ≤ TMAX 0.65%
Minimum load current |VIN – VOUT| ≤ 40 V 3.5 5 mA
3 V ≤ |VIN – VOUT| ≤ 15 V 2.2 3.5 mA
Current limit 3 V ≤ |VIN – VOUT| ≤ 13 V 100 200 320 mA
|VIN – VOUT| = 40 V 25 50 120 mA
RMS output noise, % of VOUT TA = 25°C, 10 Hz ≤ f ≤ 10 kHz 0.003%
Ripple rejection ratio VOUT = –10 V, F = 120 Hz, CADJ = 0 65 dB
CADJ = 10 μF 66 80 dB
Long-term stability TA = 125°C 0.3% 1%
(1) Unless otherwise specified, these specifications apply –25°C ≤ TJ ≤ 125°C for the LM337L; |VIN – VOUT| = 5 V and IOUT = 40 mA. Although power dissipation is internally limited, these specifications are applicable for power dissipations up to 625 mW. IMAX is 100 mA.
(2) Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are covered under the specification for thermal regulation.

6.6 Typical Characteristics

LM337L D001_SNVS780.gif Figure 1. Current Limit
LM337L waveform_01_line_transient_response_snvs780.png Figure 3. Line Transient Response
LM337L D002_SNVS780.gif Figure 2. Minimum Operating Current
LM337L waveform_02_load_transient_response_snvs780.png Figure 4. Load Transient Response