SLUSA21A February   2010  – December 2014 UCC2818A-Q1

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 Thermal Information
    4. 6.4 Electrical Characteristics
  7. 7 Detailed Description
    1. 7.1 Functional Block Diagram
    2. 7.2 Feature Description
      1. 7.2.1  Current Amplifier Noninverting Input, CAI
      2. 7.2.2  Current Amplifier Output, CAOUT
      3. 7.2.3  Oscillator Timing Capacitor, CT
      4. 7.2.4  Gate Drive, DRVOUT
      5. 7.2.5  Ground, GND
      6. 7.2.6  Current Proportional to Input Voltage, IAC
      7. 7.2.7  Multiplier Output and Current Amplifier Inverting Input, MOUT
      8. 7.2.8  Overvoltage and Enable, OVP/EN
      9. 7.2.9  PFC Peak Current-Limit, PKLMT
      10. 7.2.10 Oscillator Charging Current, RT
      11. 7.2.11 Soft Start, SS
      12. 7.2.12 Voltage amplifier output, VAOUT
      13. 7.2.13 Positive Supply Voltage, VCC
      14. 7.2.14 Feed-Forward Voltage, VFF
      15. 7.2.15 Voltage Amplifier Inverting Input, VSENSE
      16. 7.2.16 Voltage Reference Output, VREF
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Detailed Design Procedure
        1. 8.2.1.1 Power Stage
          1. 8.2.1.1.1 LBOOST
          2. 8.2.1.1.2 COUT
        2. 8.2.1.2 Soft Start
        3. 8.2.1.3 Multiplier
        4. 8.2.1.4 Voltage Loop
        5. 8.2.1.5 Current Loop
          1. 8.2.1.5.1 Start Up
          2. 8.2.1.5.2 Capacitor Ripple Reduction
      2. 8.2.2 Application Curves
  9. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Development Support
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  10. 10Mechanical, Packaging, and Orderable Information

Package Options

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

5 Pin Configuration and Functions

D Package
16-Pin SOIC
Top View
pinout_lusa21.gif

Pin Functions

PIN I/O DESCRIPTION
NO. NAME
1 GND — Ground
2 PKLMT I PFC peak current limit
3 CAOUT O Current amplifier output
4 CAI I Current amplifier noninverting input
5 MOUT I/O Multiplier output and current amplifier inverting input
6 IAC I Current proportional to input voltage
7 VAOUT O Voltage amplifier output
8 VFF I Feed-forward voltage
9 VREF O Voltage reference output
10 OVP/EN I Overvoltage/enable
11 VSENSE I Voltage amplifier inverting input
12 RT I Oscillator charging current
13 SS I Soft-start
14 CT I Oscillator timing capacitor
15 VCC I Positive supply voltage
16 DRVOUT O Gate drive