ZHCSS29R April   2004  – April 2024 TL103W , TL103WA , TL103WB

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics: OP AMP1 (VREF at Noninverting input)
    6. 5.6 Electrical Characteristics: OP AMP2 (Independent Amplifier)
    7. 5.7 Typical Characteristics: TL103WB
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Internal Reference
      2. 6.3.2 Input Common Mode Range
      3. 6.3.3 EMI Rejection
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 Isolated Flyback CC/CV Feedback
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
          1. 7.2.1.2.1 Constant Current Circuit
          2. 7.2.1.2.2 Constant Voltage Circuit
      2. 7.2.2 Constant Current Sink
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 接收文档更新通知
    3. 8.3 支持资源
    4. 8.4 Trademarks
    5. 8.5 静电放电警告
    6. 8.6 术语表
  10. 9 Revision History
  11. 10Mechanical, 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)
  • D|8
散热焊盘机械数据 (封装 | 引脚)
订购信息
7.2.1.2.2 Constant Voltage Circuit

For the constant voltage feedback circuit, resistors R8 and R9 divide down the battery voltage to compare against the TL103Wx's reference. This is shown in Figure 7-2. The voltage at the inverting input of the amplifier is designed to equal 2.5V when the battery reaches its maximum specified voltage (or desired constant voltage value). This is shown in for a maximum voltage of 20V provided in Table 7-1.

Equation 7. V B A T × R 9 R 8 + R 9 = 2.5   V
Equation 8. 20   V × R 9 R 8 + R 9 = 2.5   V
To mimic the constant current circuit and achieve a total impedance and 2kΩ across the battery, R8 is set to 1.96kΩ and R9 to 280Ω.
GUID-20230918-SS0I-PSLM-QLBL-BWNMSFGHDVR5-low.svg Figure 7-2 Constant Voltage Circuit
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