SNVS686L March   2011  – June 2025 LMZ22005

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Synchronization Input
      2. 6.3.2 Output Overvoltage Protection
      3. 6.3.3 Current Limit
      4. 6.3.4 Thermal Protection
      5. 6.3.5 Prebiased Start-Up
    4. 6.4 Device Functional Modes
      1. 6.4.1 Discontinuous And Continuous Conduction Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Custom Design With WEBENCH® Tools
        2. 7.2.2.2 Design Steps
        3. 7.2.2.3 Enable Divider, RENT, RENB, and RENH Selection
        4. 7.2.2.4 Output Voltage Selection
        5. 7.2.2.5 Soft-start Capacitor Selection
        6. 7.2.2.6 Tracking Supply Divider Option
        7. 7.2.2.7 CO Selection
        8. 7.2.2.8 CIN Selection
        9. 7.2.2.9 Discontinuous and Continuous Conduction Modes Selection
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Examples
      3. 7.4.3 Power Dissipation and Thermal Considerations
      4. 7.4.4 Power Module SMT Guidelines
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Development Support
        1. 8.1.1.1 Custom Design With WEBENCH® Tools
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • Integrated shielded inductor
  • Simple PCB Layout
  • Frequency synchronization input (650kHz to
    950kHz)
  • Flexible start-up sequencing using external
    soft-start, tracking and precision enable
  • Protection against inrush currents and faults such as input UVLO and output short circuit
  • Junction temperature range –40°C to 125°C
  • Single exposed pad for easy mounting and manufacturing
  • Fast transient response for powering FPGAs and ASICs
  • Pin compatible with LMZ23605, LMZ23603, LMZ22003
  • Electrical specifications
    • 30W maximum total output power
    • Up to 5A output current
    • Input voltage range 6V to 20V
    • Output voltage range 0.8V to 6V
    • Efficiency up to 92%
  • Performance benefits
    • High efficiency reduces system heat generation
    • Tested to EN55022 Class B(1)
    • Low component count, only five external components
    • Low output voltage ripple
    • Uses PCB as heat sink, no airflow required (1)
  • Create a custom design using the LMZ22005 with the WEBENCH® Power Designer
1. EN 55022:2006, +A1:2007, FCC Part 15 Subpart B: 2007. See AN-2125 LMZ23605/03, LMZ22005/03 Demonstration Board user's guide and layout for information on device under test. Vin = 12V, Vo = 3.3V, Io = 5A