SNVS641L January   2010  – April 2019 LMZ10503

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Typical Application Circuit
      2.      Efficiency VOUT = 3.3 V
  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 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 Enable
      2. 7.3.2 Enable and UVLO
      3. 7.3.3 Soft-Start
      4. 7.3.4 Soft-Start Capacitor
      5. 7.3.5 Tracking
      6. 7.3.6 Tracking - Equal Soft-Start Time
      7. 7.3.7 Tracking - Equal Slew Rates
      8. 7.3.8 Current Limit
      9. 7.3.9 Overtemperature Protection
    4. 7.4 Device Functional Modes
      1. 7.4.1 Prebias Start-Up Capability
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Custom Design With WEBENCH® Tools
        2. 8.2.2.2 Input Capacitor Selection
        3. 8.2.2.3 Output Capacitor Selection
          1. 8.2.2.3.1 Output Voltage Setting
        4. 8.2.2.4 Loop Compensation
      3. 8.2.3 Application Curves
    3. 8.3 System Examples
      1. 8.3.1 Application Schematic for 3.3-V to 5-V Input and 2.5-V Output With Optimized Ripple and Transient Response
      2. 8.3.2 Application Schematic for 3.3-V to 5-V Input and 2.5-V Output
      3. 8.3.3 EMI Tested Schematic for 2.5-V Output Based on 3.3-V to 5-V Input
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Examples
    3. 10.3 Estimate Power Dissipation and Thermal Considerations
    4. 10.4 Power Module SMT Guidelines
  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 Documentation Support
      1. 11.2.1 Related Documentation
    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

1 Features

  • Integrated Shielded Inductor
  • Flexible Start-up Sequencing Using External Soft Start, Tracking, and Precision Enable
  • Protection Against In-Rush Currents and Faults Such as Input UVLO and Output Short Circuit
  • Single Exposed Pad and Standard Pinout for Easy Mounting and Manufacturing
  • Pin-to-Pin Compatible With
    • LMZ10504 (4 A / 20 W Maximum)
    • LMZ10505 (5 A / 25 W Maximum)
  • Electrical Specifications
    • 15-W Maximum Total Output Power
    • Up to 3-A Output Current
    • Input Voltage Range 2.95 V to 5.5 V
    • Output Voltage Range 0.8 V to 5 V
    • ±1.63% Feedback Voltage Accuracy Over Temperature
  • Performance Benefits
    • Operates at High Ambient Temperatures
    • High Efficiency up to 96% Reduces System Heat Generation
    • Low Radiated Emissions (EMI) Tested to EN55022 Class B Standard (EN 55022:2006, +A1:2007, FCC Part 15 Subpart B: 2007. See Table 9 and layout information for more regarding device under test.)
    • Fast Transient Response for Powering FPGAs and ASICs
  • Create a Custom Design Using the LMZ10503 With the WEBENCH® Power Designer