ZHCSJ63 December   2018 TLV1805

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     Device Images
      1.      采用 P 沟道 MOSFET 的过压保护
      2.      采用 P 沟道 MOSFET 的反向电流和过压保护
  4. 4 修订历史记录
  5. 5 说明 (续)
  6. 6 Pin Configuration and Functions
    1.     Pin 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 Switching Characteristics
    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 Rail to Rail Inputs
      2. 8.3.2 Power On Reset
      3. 8.3.3 High Power Push-Pull Output
      4. 8.3.4 Shutdown Function
      5. 8.3.5 Internal Hysteresis
    4. 8.4 Device Functional Modes
      1. 8.4.1 External Hysteresis
        1. 8.4.1.1 Inverting Comparator With Hysteresis
        2. 8.4.1.2 Noninverting Comparator With Hysteresis
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curve
      4. 9.2.4 Reverse Current Protection Using MOSFET and TLV1805
        1. 9.2.4.1 Minimum Reverse Current
        2. 9.2.4.2 N-Channel Reverse Current Protection Circuit
          1. 9.2.4.2.1 N-Channel Oscillator Circuit
      5. 9.2.5 P-Channel Reverse Current Protection Circuit
      6. 9.2.6 P-Channel Reverse Current Protection With Overvotlage Protection
      7. 9.2.7 ORing MOSFET Controller
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12器件和文档支持
    1. 12.1 文档支持
      1. 12.1.1 相关文档
    2. 12.2 接收文档更新通知
    3. 12.3 社区资源
    4. 12.4 商标
    5. 12.5 静电放电警告
    6. 12.6 术语表
  13. 13机械、封装和可订购信息

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

8.4.1.1 Inverting Comparator With Hysteresis

TLV1805 ai_inverting_bos561.gifFigure 64. TLV1805 in an Inverting Configuration With Hysteresis

The inverting comparator with hysteresis requires a three-resistor network that is referenced to the comparator supply voltage (VCC), as shown in Figure 64. When VIN at the inverting input is less than VA, the output voltage is high (for simplicity, assume VO switches as high as VCC). The three network resistors can be represented as R1 || R3 in series with R2. Equation 1 defines the high-to-low trip voltage (VA1).

Equation 1. TLV1805 q_va1_bos561.gif

When VIN is greater than VA, the output voltage is low, very close to ground. In this case, the three network resistors can be presented as R2 || R3 in series with R1. Use Equation 2 to define the low to high trip voltage (VA2).

Equation 2. TLV1805 q_va2_bos561.gif

Equation 3 defines the total hysteresis provided by the network.

Equation 3. TLV1805 q_delta_va_bos561.gif