ZHCSEP1D January   2016  – May 2021 TPS61194

PRODUCTION DATA  

  1. 特性
  2. 应用
  3. 说明
  4. Revision History
  5. Pin Configuration and Functions
  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 (1) (1)
    6. 6.6  Internal LDO Electrical Characteristics
    7. 6.7  Protection Electrical Characteristics
    8. 6.8  Current Sinks Electrical Characteristics
    9. 6.9  PWM Brightness Control Electrical Characteristics
    10. 6.10 Boost and SEPIC Converter Characteristics
    11. 6.11 Logic Interface Characteristics
    12. 6.12 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Integrated DC-DC Converter
      2. 7.3.2 Internal LDO
      3. 7.3.3 LED Current Sinks
        1. 7.3.3.1 Output Configuration
        2. 7.3.3.2 Current Setting
        3. 7.3.3.3 Brightness Control
      4. 7.3.4 Protection and Fault Detections
        1. 7.3.4.1 Adaptive DC-DC Voltage Control and Functionality of LED Fault Comparators
        2. 7.3.4.2 Overview of the Fault/Protection Schemes
    4. 7.4 Device Functional Modes
      1. 7.4.1 Device States
  8. Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Typical Application for 4 LED Strings
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Inductor Selection
          2. 8.2.1.2.2 Output Capacitor Selection
          3. 8.2.1.2.3 Input Capacitor Selection
          4. 8.2.1.2.4 LDO Output Capacitor
          5. 8.2.1.2.5 Diode
        3. 8.2.1.3 Application Curves
      2. 8.2.2 SEPIC Mode Application
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
          1. 8.2.2.2.1 Inductor
          2. 8.2.2.2.2 Diode
          3. 8.2.2.2.3 Capacitor C1
        3. 8.2.2.3 Application Curves
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 接收文档更新通知
    4. 11.4 支持资源
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

封装选项

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

说明

TPS61194 是一款高效、低 EMI、易于使用的 LED 驱动器,可灵活支持各类应用。该器件具有四路高精度电流阱,可组合使用以提高电流能力。

TPS61194 配备的集成式直流/直流转换器支持升压和 SEPIC 工作模式。该转换器可基于 LED 电流阱余量电压提供自适应输出电压控制。该特性可在所有条件下将电压调节到能够满足需要的最低水平,从而更大限度地降低功耗。为了实现 EMI 控制,该直流/直流转换器支持针对开关频率进行展频以及使用专用引脚实现外部同步。

TPS61194 具有 4.5V 至 40V 的宽输入电压范围,可为各种不同的应用提供可靠的支持。TPS61194 集成了丰富的故障检测功能。对于 100Hz 输入 PWM 频率,该器件支持 10000:1 的 PWM 亮度调节比率。

器件信息(1)
器件型号 封装 封装尺寸(标称值)
TPS61194 HTSSOP (20) 6.50mm x 4.40mm
如需了解所有可用封装,请参阅数据表末尾的可订购产品附录。
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GUID-C819D12B-4D1B-457B-B20C-347906F8A2A7-low.png系统效率