SLUS652E March   2005  – April 2020 UCD8220

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1. 3.1 UCD8220 Typical Simplified Push-Pull Converter Application Schematic
  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 Timing Requirements
    7. 6.7 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 CLK Input Time-Domain Digital Pulse Train
      2. 7.3.2 Current Sensing and Protection
      3. 7.3.3 Handshaking
      4. 7.3.4 Driver Output
      5. 7.3.5 Source and Sink Capabilities During Miller Plateau
      6. 7.3.6 Drive Current and Power Requirements
      7. 7.3.7 Clearing the Current-Limit Flag (CLF)
    4. 7.4 Device Functional Modes
  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 Selecting the ISET Resistor for Voltage Mode Control
        2. 8.2.2.2 Selecting the ISET Resistor for Voltage Mode Control with Voltage Feed Forward
        3. 8.2.2.3 Selecting the ISET Resistor for Peak Current Mode Control with Internal Slope Compensation
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Thermal Considerations
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Trademarks
    3. 11.3 Electrostatic Discharge Caution
    4. 11.4 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • PWP|16
散热焊盘机械数据 (封装 | 引脚)
订购信息

6.7 Typical Characteristics

UCD8220 uvlo_v_temp_slusb36.gifFigure 2. UCD8220 UVLO Threshold vs Temperature
UCD8220 v33scc_v_temp_slusb36.gifFigure 4. 3V3 Short-circuit Current vs Temperature
UCD8220 v33ref_v_temp_slusb36.gifFigure 3. 3V3 Reference Voltage vs Temperature
UCD8220 idd_5v_freq_slusb36.gifFigure 5. Supply Current vs Frequency (VDD = 5 V)
UCD8220 idd_8v_freq_slusb36.gifFigure 6. Supply Current vs Frequency (VDD = 8 V)
UCD8220 idd_12v_freq_slusb36.gifFigure 8. Supply Current vs Frequency (VDD = 12 V)
UCD8220 vi_v_temp_slusb36.gif
Figure 10. CLK Input Threshold vs Temperature
UCD8220 ir_v_vdd_slusb36.gif
Figure 12. Output Rise Time vs Supply Voltage
UCD8220 tpd_rise_vdd_slusb36.gifFigure 14. CLK to OUTx Propagation Delay Rising vs Supply Voltage
UCD8220 vcs_v_temp_slusb36.gifFigure 16. Default Current Limit Threshold vs Temperature
UCD8220 tpd_2cs_temp_slusb36.gifFigure 18. CS to CLF Propagation Delay vs Temperature
UCD8220 start_12v_3v3_slusb36.gif
CLK = CTRL = 3V3
Figure 20. Start-Up Behavior at VDD = 12 V
UCD8220 start_12v_gnd_slusb36.gif
CLK = AGND CTRL = 3V3
Figure 22. Start-Up Behavior at VDD = 12 V
UCD8220 vo_v_time_slusb36.gif
VDD = 12 V CLOAD = 10 nF
Figure 24. Output Rise and Fall Time
UCD8220 pwmoff_v_temp_slusb36.gif
Figure 26. PWM Offset at CTRL Input vs Temperature
UCD8220 idd_10v_freq_slusb36.gifFigure 7. Supply Current vs Frequency (VDD = 10 V)
UCD8220 idd_15v_freq_slusb36.gifFigure 9. Supply Current vs Frequency (VDD = 15 V)
UCD8220 irif_v_temp_slusb36.gif
CLOAD = 2.2 nF VDD = 12 V
Figure 11. Output Rise Time and Fall Time vs Temperature
UCD8220 if_v_vdd_slusb36.gif
Figure 13. Output Fall Time vs Supply Voltage
UCD8220 tpd_fall_vdd_slusb36.gifFigure 15. CLK to OUTx Propagation Delay Falling vs Supply Current
UCD8220 tpd_1cs_temp_slusb36.gifFigure 17. CS to OUTx Propagation Delay vs Temperature
UCD8220 tpd_3cs_temp_slusb36.gifFigure 19. CLK to OUT Propagation Delay vs Temperature
UCD8220 shut_12v_3v3_slusb36.gif
CLK = CTRL = 3V3
Figure 21. Shut-Down Behavior at VDD = 12 V
UCD8220 shut_12v_gnd_slusb36.gif
CLK = AGND CTRL = 3V3
Figure 23. Shut-Down Behavior at VDD = 12 V
UCD8220 intslp_v_temp_slusb36.gif
Current mode slope RISET = 100 kΩ
Figure 25. Internal Slope Compensation in CMC vs Temperature