SNOSCT6F March   2013  – January 2017 LP38798

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and 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 Noise Filter
      2. 7.3.2 Enable Input Operation
      3. 7.3.3 Undervoltage Lockout (UVLO)
      4. 7.3.4 Output Current Limiting
      5. 7.3.5 Thermal Shutdown
    4. 7.4 Device Functional Modes
    5. 7.5 Programming
      1. 7.5.1 Programming the Output Voltage
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application: VOUT = 5 V
      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 Recommendations
        3. 8.2.2.3 Output Capacitor Recommendations
        4. 8.2.2.4 Charge Pump
        5. 8.2.2.5 Setting the Output Voltage
        6. 8.2.2.6 Device Dissipation
      3. 8.2.3 Application Curve
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Thermal Considerations
    4. 10.4 Estimating the Junction Temperature
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Suppport
        1. 11.1.1.1 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

9 Power Supply Recommendations

The LP38798 device is designed to operate from an input voltage supply range of 3 V to 20 V. The input supply must be able to supply enough current to keep the input voltage from drooping during load transients and high load current. If the input supply is noisy, additional input capacitors with low ESR can help improve the output noise performance.