ZHCSTJ2A October   2023  – May 2024 TPS3762-Q1

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Device Nomenclature
  6. 5 Device Comparison
  7. 6 Pin Configuration and Functions
  8. 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 Requirements
    7. 7.7 Timing Requirements
  9. 8 Timing Diagrams
  10. 9 Typical Characteristics
  11. 10Detailed Description
    1. 10.1 Overview
    2. 10.2 Functional Block Diagram
    3. 10.3 Feature Description
      1. 10.3.1 Input Voltage (VDD)
        1. 10.3.1.1 Undervoltage Lockout (VPOR < VDD < UVLO)
        2. 10.3.1.2 Power-On Reset (VDD < VPOR )
      2. 10.3.2 SENSE
        1. 10.3.2.1 Reverse Polarity Protection
        2. 10.3.2.2 SENSE Hysteresis
      3. 10.3.3 Output Logic Configurations
        1. 10.3.3.1 Open-Drain
        2. 10.3.3.2 Active-Low (RESET)
        3. 10.3.3.3 Latching
        4. 10.3.3.4 UVBypass
      4. 10.3.4 User-Programmable Reset Time Delay
        1. 10.3.4.1 Reset Time Delay Configuration
      5. 10.3.5 User-Programmable Sense Delay
        1. 10.3.5.1 Sense Time Delay Configuration
      6. 10.3.6 Built-In Self-Test
    4. 10.4 Device Functional Modes
  12. 11Application and Implementation
    1. 11.1 Application Information
    2. 11.2 Adjustable Voltage Thresholds
    3. 11.3 Typical Application
      1. 11.3.1 Design 1: Off-Battery Monitoring
        1. 11.3.1.1 Design Requirements
        2. 11.3.1.2 Detailed Design Procedure
          1. 11.3.1.2.1 Setting Voltage Threshold
          2. 11.3.1.2.2 Meeting the Sense and Reset Delay
          3. 11.3.1.2.3 Setting Supply Voltage
          4. 11.3.1.2.4 Initiating Built-In Self-Test and Clearing Latch
        3. 11.3.1.3 Application Curves
    4. 11.4 Power Supply Recommendations
      1. 11.4.1 Power Dissipation and Device Operation
    5. 11.5 Layout
      1. 11.5.1 Layout Guidelines
      2. 11.5.2 Layout Example
  13. 12Device and Documentation Support
    1. 12.1 接收文档更新通知
    2. 12.2 支持资源
    3. 12.3 Trademarks
    4. 12.4 静电放电警告
    5. 12.5 术语表
  14. 13Revision History
  15. 14Mechanical, Packaging, and Orderable Information

10.3.3.4 UVBypass

The TPS3762-Q1 comes with the optional undervoltage bypass (UVbypass) feature, check Section 5 to verify variant specific UVbypass functionality. When using a variant with UVbypass enabled, the first undervoltage event after VDD > VPOR is ignored. In cases where an undervoltage event has not occurred UVbypass can be cleared by running BIST.

UVbypass is targeted at specific applications in which the TPS3762-Q1 is powered Off-battery and is monitoring the Off-battery DC-DC output, as shown in Figure 10-7. If the Off-battery DCDC output is outside of threshold the TPS3762-Q1 resets this device. See Figure 10-8 and Figure 10-9 for more details.

TPS3762-Q1 UVbypass Schematic Figure 10-7 UVbypass Schematic
TPS3762-Q1 UVbypass Enabled Figure 10-8 UVbypass Enabled
TPS3762-Q1 UVbypass Disabled Figure 10-9 UVbypass Disabled