SNOSBT0L February   2000  – September 2016 LM340

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
    1.     Available Packages
  3. 3 Description
    1.     Fixed Output Voltage Regulator
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin 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 LM340A Electrical Characteristics, VO = 5 V, VI = 10 V
    6. 6.6 LM340 / LM7805 Electrical Characteristics, VO = 5 V, VI = 10 V
    7. 6.7 LM340 / LM7812 Electrical Characteristics, VO = 12 V, VI = 19 V
    8. 6.8 LM340 / LM7815 Electrical Characteristics, VO = 15 V, VI = 23 V
    9. 6.9 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 Current
      2. 7.3.2 Current Limiting Feature
      3. 7.3.3 Thermal Shutdown
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Shorting the Regulator Input
      2. 8.1.2 Raising the Output Voltage Above the Input Voltage
      3. 8.1.3 Regulator Floating Ground
      4. 8.1.4 Transient Voltages
    2. 8.2 Typical Applications
      1. 8.2.1 Fixed Output Voltage Regulator
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
    3. 8.3 System Examples
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Heat Sinking DDPAK/TO-263 and SOT-223 Package Parts
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Related Links
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Community Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

6.5 LM340A Electrical Characteristics,
VO = 5 V, VI = 10 V

IOUT = 1 A, 0°C ≤ TJ ≤ 125°C (LM340A) unless otherwise specified(1)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VO Output voltage TJ = 25°C 4.9 5 5.1 V
PD ≤ 15 W, 5 mA ≤ IO ≤ 1 A

7.5 V ≤ VIN ≤ 20 V

 4.8 5.2 V
ΔVO Line regulation 7.5 V ≤ VIN ≤ 20 V TJ = 25°C 3 10 mV
Over temperature, IO = 500 mA 10 mV
8 V ≤ VIN ≤ 12 V TJ = 25°C 4 mV
Over temperature 12 mV
ΔVO Load regulation TJ = 25°C 5 mA ≤ IO ≤ 1.5 A 10 25 mV
250 mA ≤ IO ≤ 750 mA 15 mV
Over temperature, 5 mA ≤ IO ≤ 1 A 25 mV
IQ Quiescent current TJ = 25°C 6 mA
Over temperature 6.5 mA
ΔIQ Quiescent current change TJ = 25°C, IO = 1 A

7.5 V ≤ VIN ≤ 20 V

 0.8 mA
Over temperature, 5 mA ≤ IO ≤ 1 A 0.5 mA
Over temperature, IO = 500 mA

8 V ≤ VIN ≤ 25 V

 0.8 mA
VN Output noise voltage TA = 25°C, 10 Hz ≤ f ≤ 100 kHz 40 μV
LM340 LM340A LM7805 LM7812 LM7815 00778135.png
Ripple rejection f = 120 Hz

8 V ≤ VIN ≤ 18 V



 TJ = 25°C, , IO = 1 A

68 80 dB
Over temperature, IO = 500 mA 68 dB
RO Dropout voltage TJ = 25°C, IO = 1 A 2 V
Output resistance f = 1 kHz 8 mΩ
Short-circuit current TJ = 25°C 2.1 A
Peak output current TJ = 25°C 2.4 A
Average TC of VO Min, TJ = 0°C, IO = 5 mA −0.6 mV/°C
VIN Input voltage required to maintain line regulation TJ = 25°C 7.5 V