ZHCSMM0 December   2020 TPS27SA08-Q1

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Device Summary Table
  6. 6 Pin Configuration and Functions
    1. 6.1 Recommended Connections for Unused Pins
  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 SNS Timing Characteristics
    8. 7.8 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Protection Mechanisms
        1. 9.3.1.1 Thermal Shutdown
        2. 9.3.1.2 Current Limit
          1. 9.3.1.2.1 Current Limit Foldback
          2. 9.3.1.2.2 Undervoltage Lockout (UVLO)
          3. 9.3.1.2.3 VBB during Short-to-Ground
        3. 9.3.1.3 Energy Limit
        4. 9.3.1.4 Voltage Transients
          1. 9.3.1.4.1 Driving Inductive and Capacitive Loads
        5. 9.3.1.5 Reverse supply
        6. 9.3.1.6 Fault Event – Timing Diagrams
      2. 9.3.2 Diagnostic Mechanisms
        1. 9.3.2.1 VOUT Short-to-supply and Open-Load
          1. 9.3.2.1.1 Detection With Switch Enabled
          2. 9.3.2.1.2 Detection With Switch Disabled
        2. 9.3.2.2 SNS Output
          1. 9.3.2.2.1 RSNS Value
            1. 9.3.2.2.1.1 High Accuracy Load Current Sense
            2. 9.3.2.2.1.2 SNS Output Filter
        3. 9.3.2.3 ST Pin
        4. 9.3.2.4 Fault Indication and SNS Mux
        5. 9.3.2.5 Resistor Sharing
        6. 9.3.2.6 High-Frequency, Low Duty-Cycle Current Sensing
    4. 9.4 Device Functional Modes
      1. 9.4.1 Off
      2. 9.4.2 Standby
      3. 9.4.3 Diagnostic
      4. 9.4.4 Standby Delay
      5. 9.4.5 Active
      6. 9.4.6 Fault
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1 Ground Protection Network
      2. 10.1.2 Interface With Microcontroller
      3. 10.1.3 I/O Protection
      4. 10.1.4 Inverse Current
      5. 10.1.5 Loss of GND
      6. 10.1.6 Thermal Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 Thermal Considerations
        2. 10.2.2.2 Diagnostics
          1. 10.2.2.2.1 Selecting the RISNS Value
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 Related Documentation
    2. 13.2 Trademarks
    3. 13.3 Electrostatic Discharge Caution
    4. 13.4 Glossary
  14. 14Mechanical, 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

7.7 SNS Timing Characteristics

VBB = 8 to 36 V, TJ = –40°C to 150°C (unless otherwise noted)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
SNS TIMING - CURRENT SENSE
tSNSION1Settling time from rising edge of DIA_ENVEN = 5 V, VDIA_EN = 0 V to 5 V
RSNS = 1 kΩ, RL = 2.6 Ω		40µs
tSNSION2Settling time from rising edge of ENVEN = VDIA_EN = 0 V to 5 V
RSNS = 1 kΩ, RL = 2.6 Ω		180µs
tSNSION3Settling time from rising edge of ENVEN = 0 V to 5 V, VDIA_EN = 5 V
RSNS = 1 kΩ, RL = 2.6 Ω		180µs
tSNSIOFF1Settling time from falling edge of DIA_ENVEN = 5 V, VDIA_EN = 5 V to 0 V
RSNS = 1 kΩ, RL = 2.6 Ω		20µs
tSETTLEHSettling time from rising edge of load stepVEN = 5 V, VDIA_EN = 5 V
RSNS = 1 kΩ, IOUT = 1 A to 5 A		20µs
tSETTLELSettling time from falling edge of load stepVEN = 5 V, VDIA_EN = 5 V
RSNS = 1 kΩ, IOUT = 5 A to 1 A		20µs
SNS TIMING - TEMPERATURE SENSE
tSNSTON1Settling time from rising edge of DIA_ENVEN = 5 V, VDIA_EN = 0 V to 5 V
RSNS = 1 kΩ		40µs
tSNSTON2Settling time from rising edge of DIA_ENVEN = 0 V, VDIA_EN = 0 V to 5 V
RSNS = 1 kΩ		70µs
tSNSTOFFSettling time from falling edge of DIA_ENVEN = X, VDIA_EN = 5 V to 0 V
RSNS = 1 kΩ		20µs
SNS TIMING - VOLTAGE SENSE
tSNSVON1Settling time from rising edge of DIA_ENVEN = 5 V, VDIA_EN = 0 V to 5 V
RSNS = 1 kΩ		40µs
tSNSVON2Settling time from rising edge of DIA_ENVEN = 0 V, VDIA_EN = 0 V to 5 V
RSNS = 1 kΩ		70µs
tSNSVOFFSettling time from falling edge of DIA_ENVEN = X, VDIA_EN = 5 V to 0 V
RSNS = 1 kΩ		20µs
SNS TIMING - MULTIPLEXER
tMUXSettling time from temperature sense to current senseVEN= X, VDIA_EN = 5 V
VSEL1 = 5 V to 0 V, VSEL2 = 0 V
RSNS = 1 kΩ, RL = 2.6 Ω		60µs
Settling time from temperature sense to voltage senseVEN = X, VDIA_EN = 5 V
VSEL1 = 5 V, VSEL2 = 0 V to 5 V
RSNS = 1 kΩ		60µs
Settling time from voltage sense to temperature senseVEN = X, VDIA_EN = 5 V
VSEL1 = 5 V, VSEL2 = 5 V to 0 V
RSNS = 1 kΩ		60µs
Settling time from voltage sense to current senseVEN = X, VDIA_EN = 5 V
VSEL1 = VSEL2 = 5 V to 0 V,
RSNS = 1 kΩ, RL = 2.6 Ω		60µs
Settling time from current sense to temperature senseVEN = X, VDIA_EN = 5 V
VSEL1 = 0 V to 5 V, VSEL2 = 0 V
RSNS = 1 kΩ, RL = 2.6 Ω		60µs
Settling time from current sense to voltage senseVEN = X, VDIA_EN = 5 V
VSEL1 = VSEL2 = 0 V to 5 V
RSNS = 1 kΩ, RL = 2.6 Ω		60µs
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