SLUS336A June   1998  – December 2016 UC1854 , UC2854 , UC3854

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Protection Inputs
        2. 9.2.2.2 Control Inputs
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Related Links
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Community Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • J|16
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5 Device Comparison Table

PARAMETER UC3854 UC3854A UC3854B
Supply current, OFF 2-mA maximum 400-µA maximum 400-µA maximum
Supply voltage (VCC) 35-V maximum 22-V maximum 22-V maximum
VCC turn-on threshold 16-V typical 16-V typical 10.5-V typical
VCC UVLO hysteresis 6-V typical 6-V typical 0.5-V typical
Current amplifier bandwidth 1-MHz typical 5-MHz typical 5-MHz typical
Current amplifier offset 4-mV, –4-mV maximum 0-mV, –4-mV maximum 0-mV, –4-mV maximum
MULTOUT voltage (high) 2.5-V typical 5-V typical 5-V typical
Multiplier gain tolerance Not specified –0.9 to –1.1 –0.9 to –1.1
ENABLE propagation delay Not specified 300-ns typical 300-ns typical
VSENSE input 7.5 V 3 V 3 V
IAC voltage 6-V typical 0.5-V typical 0.5-V typical
Voltage amplifier clamp — Internal Internal
Current amplifier clamp — Internal Internal
VREF good circuitry — Internal Internal