SNVS121E May   1996  – May 2019 LM2586

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Typical Applications
  3. 3 Description
    1.     Device Images
      1.      Block Diagram
  4. 4 Revision History
  5. 5 Pin Configurations
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Ratings
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics: 3.3 V
    6. 6.6 Electrical Characteristics: 5 V
    7. 6.7 Electrical Characteristics: 12 V
    8. 6.8 Electrical Characteristics: Adjustable
    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 Flyback Regulator Operation
      2. 7.3.2 Step-Up (Boost) Regulator Operation
      3. 7.3.3 Programming Output Voltage (Selecting R1 And R2)
      4. 7.3.4 Shutdown Control
      5. 7.3.5 Frequency Adjustment
      6. 7.3.6 Frequency Synchronization
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Typical Flyback Regulator Applications
        1. 8.2.1.1 Design Requirements
          1. 8.2.1.1.1 Transformer Selection (T)
          2. 8.2.1.1.2 Transformer Footprints
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Custom Design With WEBENCH® Tools
          2. 8.2.1.2.2 Flyback Regulator Input Capacitors
          3. 8.2.1.2.3 Switch Voltage Limits
          4. 8.2.1.2.4 Output Voltage Limitations
          5. 8.2.1.2.5 Noisy Input Line Condition
          6. 8.2.1.2.6 Stability
      2. 8.2.2 Typical Boost Regulator Applications
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
    3. 8.3 System Examples
      1. 8.3.1 Test Circuits
  9. 9 Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Layout Example
  10. 10Heat Sink/Thermal Considerations
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
      2. 11.1.2 Development Support
        1. 11.1.2.1 Custom Design With WEBENCH® Tools
    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

Package Options

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

6.5 Electrical Characteristics: 3.3 V

Specifications with standard type face are for TJ = 25°C, and those in bold type face apply over full Operating Temperature Range. Unless otherwise specified, VIN = 5V.
PARAMETER TEST CONDITIONS TYP MIN MAX UNIT
SYSTEM PARAMETERS Test Circuit of Figure 54(1)
VOUT Output Voltage VIN = 4V to 12V
ILOAD = 0.3 to 1.2A		 3.3 3.17/3.14 3.43/3.46 V
ΔVOUT/
ΔVIN 		Line Regulation VIN = 4V to 12V
ILOAD = 0.3A		 20 50/100 mV
ΔVOUT/
ΔILOAD 		Load Regulation VIN = 12V
ILOAD = 0.3A to 1.2A		 20 50/100 mV
η Efficiency VIN = 5V, ILOAD = 0.3A 76%
UNIQUE DEVICE PARAMETERS (2)
VREF Output Reference
Voltage		 Measured at Feedback Pin
V = 1.0V		 3.3 3.242/3.234 3.358/3.366 V
ΔVREF Reference Voltage
Line Regulation		 VIN = 4V to 40V 2 mV
GM Error Amp
Transconductance		 ICOMP = −30 μA to +30 μA
VCOMP = 1V		 1.193 0.678 2.259 mmho
AVOL Error Amp
Voltage Gain		 VCOMP = 0.5V to 1.6V
RCOMP = 1 MΩ (3) 		260 151/75 V/V
(1) External components such as the diode, inductor, input and output capacitors can affect switching regulator performance. When the LM2586 is used as shown in Figure 54 and Figure 55, system performance will be as specified by the system parameters.
(2) All room temperature limits are 100% production tested, and all limits at temperature extremes are specified via correlation using standard Statistical Quality Control (SQC) methods.
(3) A 1.0 MΩ resistor is connected to the compensation pin (which is the error amplifier output) to ensure accuracy in measuring AVOL.