SLUS168F April   1999  – July 2025 UCC2808-1 , UCC2808-2 , UCC3808-1 , UCC3808-2

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 Pin Descriptions
    4. 6.4 Device Functional Modes
      1. 6.4.1 VCC
  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
      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 Example
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Related Links
    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

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6.1 Overview

The UCCx808-x device is a highly-integrated push-pull PWM controller that is low power and has a current mode. The controller employs low starting current and an internal control algorithm that offers accurate static output voltage regulation against line and load. The UCCx808-x family offers a variety of package temperature range options, and choice of undervoltage lockout levels. The family has UVLO thresholds and hysteresis options for offline and battery-powered system.

Table 6-1 Undervoltage Lockout Levels
PART NUMBERTURN ON THRESHOLDTURN OFF THRESHOLD
UCCx808-112.5V8.3V
UCCx808-24.3V4.1V
Table 6-2 Undervoltage Lockout Options
TA = TJ PACKAGED DEVICES
UVLO OPTION SOIC (D)
–40°C to 85°C 12.5V / 8.3V UCC2808D-1
4.3V / 4.1V UCC2808D-2
0°C to 70°C 12.5V / 8.3V UCC3808D-1
4.3V / 4.1V UCC3808D-2