SLUSCG2A March   2016  – March 2016 UCC24636

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 Timing Requirements
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Start Up and UVLO
      2. 8.3.2 Volt-Sec SR Driver On-Time Control
      3. 8.3.3 Standby Operation
      4. 8.3.4 Pin Fault Protection
        1. 8.3.4.1 VPC Pin Overvoltage
        2. 8.3.4.2 VPC Pin Open
        3. 8.3.4.3 VSC Pin Open
        4. 8.3.4.4 TBLK Pin Open
        5. 8.3.4.5 VPC and VSC Short to Ground
        6. 8.3.4.6 TBLK Pin Short to Ground
    4. 8.4 Device Functional Modes
      1. 8.4.1 Start-Up
      2. 8.4.2 Normal Operation
      3. 8.4.3 Standby Operation
      4. 8.4.4 Conditions to Stop Operation
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 AC-to-DC Adapter, 5 V, 15 W
      2. 9.2.2 Design Requirements
      3. 9.2.3 Calculation of Component Values
        1. 9.2.3.1 VPC Input
        2. 9.2.3.2 VSC Input
        3. 9.2.3.3 TBLK Input
      4. 9.2.4 Application Waveforms And Curves
    3. 9.3 Do's and Don'ts
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 VDD Pin
      2. 11.1.2 VPC Pin
      3. 11.1.3 VSC Pin
      4. 11.1.4 GND Pin
      5. 11.1.5 TBLK Pin
      6. 11.1.6 DRV Pin
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Device Nomenclature
        1. 12.1.1.1 Definition of Terms (For Design Example)
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

10 Power Supply Recommendations

The VDD operating range allows direct connection to converter outputs from 5 V to 24 V. Since the driver and control share the same VDD and ground, it is recommended to place a good quality ceramic capacitor as close as possible to VDD and GND pins. To reduce VDD noise and eliminate high-frequency ripple current injected from the converter output, it is recommended to place a small resistance of 2.2 Ω to 10 Ω between the converter output and VDD. The device can tolerate VDD rise times from 100 µs to very long rise times typical of constant current chargers. The start-up sequence will always be as shown in Figure 12. VDD can be connected to an external bias to extend the device's operating range to be compatible with converter output voltages below 3.5 V or above 24 V.