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

6.7 LM340 / LM7812 Electrical Characteristics,
VO = 12 V, VI = 19 V

0°C ≤ TJ ≤ 125°C unless otherwise specified(1)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VO Output voltage TJ = 25°C, 5 mA ≤ IO ≤ 1 A 11.5 12 12.5 V
PD ≤ 15 W, 5 mA ≤ IO ≤ 1 A

14.5 V ≤ VIN ≤ 27 V

 11.4 12.6 V
ΔVO Line regulation IO = 500 mA TJ = 25°C

14.5V ≤ VIN ≤ 30V

 4 120 mV
Over temperature

15V ≤ VIN ≤ 27V

 120 mV
IO ≤ 1 A TJ = 25°C

14.6V ≤ VIN ≤ 27V

 120 mV
Over temperature

16V ≤ VIN ≤ 22V

 60 mV
ΔVO Load regulation TJ = 25°C 5 mA ≤ IO ≤ 1.5 A 12 120 mV
250 mA ≤ IO ≤ 750 mA 60 mV
Over temperature, 5 mA ≤ IO ≤ 1 A 120 mV
IQ Quiescent current IO ≤ 1 A TJ = 25°C 8 mA
Over temperature 8.5 mA
ΔIQ Quiescent current change 5 mA ≤ IO ≤ 1 A 0.5 mA
TJ = 25°C, IO ≤ 1 A

14.8 V ≤ VIN ≤ 27 V

 1 mA
Over temperature, IO ≤ 500 mA

14.5 V ≤ VIN ≤ 30 V

 1 mA
VN Output noise voltage TA = 25°C, 10 Hz ≤ f ≤ 100 kHz 75 μV
LM340 LM340A LM7805 LM7812 LM7815 00778135.png
Ripple rejection f = 120 Hz

15 V ≤ VIN ≤ 25 V

   TJ = 25°C, IO ≤ 1 A 55 72 dB
Over temperature, IO ≤ 500 mA, 55 dB
RO Dropout voltage TJ = 25°C, IO = 1 A 2 V
Output resistance f = 1 kHz 18 mΩ
Short-circuit current TJ = 25°C 1.5 A
Peak output current TJ = 25°C 2.4 A
Average TC of VOUT Over temperature, IO = 5 mA −1.5 mV/°C
VIN Input voltage required to maintain line regulation TJ = 25°C, IO ≤ 1 A 14.6 V
(1) All characteristics are measured with a 0.22-μF capacitor from input to ground and a 0.1-μF capacitor from output to ground. All characteristics except noise voltage and ripple rejection ratio are measured using pulse techniques (tw ≤ 10 ms, duty cycle ≤ 5%). Output voltage changes due to changes in internal temperature must be taken into account separately.