SLVSFZ1 December   2020 TPS27SA08-Q1

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  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

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.8 Typical Characteristics

GUID-9433DDB6-B295-48CF-8904-148712D916E9-low.gif
VBB = 13.5 V to 0 VROUT = 1 kΩVDIAG__EN = 0 V
VEN = 5 V
Figure 7-1 Falling Undervoltage Lockout (VUVLOF) vs Temperature
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VOUT = 0 VVEN = 0 VVDIAG_EN = 0 V
Figure 7-3 Output Leakage Current (IOUT(standby)) vs Temperature
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IOUT = 200 mAVEN = 5 VVDIAG_EN = 0 V
RSNS = 1 kΩ
Figure 7-5 On Resistance (RON) vs Temperature
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ROUT = 2.6 ΩVEN = 0 V to 5 VVDIAG_EN = 0 V
RSNS = 1 kΩVBB = 13.5 V
Figure 7-7 Turn-on Delay Time (tDR) vs Temperature
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ROUT = 2.6 ΩVEN = 0 V to 5 VVDIAG_EN = 0 V
RSNS = 1 kΩVBB = 13.5 V
Figure 7-9 VOUT Slew Rate Rising (SRR) vs Temperature
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ROUT = 2.6 ΩVEN = 0 V to 5 VVDIAG_EN = 0 V
RSNS = 1 kΩVBB = 13.5 V
Figure 7-11 Turn-on Time (tON) vs Temperature
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ROUT = 2.6 ΩVEN = 0 V to 5 V and 5 V to 0 VVDIAG_EN = 0 V
RSNS = 1 kΩVBB = 13.5 V
Figure 7-13 Turn-on and Turn-off Matching (tON - tOFF) vs Temperature
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VSEL1 = VSEL2 = 0 VVEN = 5 VVDIAG_EN = 5 V
RSNS = 1 kΩTA = 25°C
Figure 7-15 Current Sense Output Current (ISNSI) vs Load Current (IOUT) across VBB
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VSEL1 = VSEL2 = 5 VVEN = 0 VVDIAG_EN = 5 V
RSNS = 1 kΩIOUT = 0 A
Figure 7-17 Voltage Sense Output Current (ISNSV) vs VBB
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VSEL1 = VSEL2 = 0 VVEN = 5 VVDIAG_EN = 5 V
RSNS = 10 kΩIOUT = 4 A
Figure 7-19 Sense Pin Clamp Voltage (VSNSCLAMP) vs Temperature
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VEN = 0 VVOUT = 0 V to 5 VIOUT = 0 A
VDIAG_EN= 5 VVSEL1 = VSEL2 = 0 V
Figure 7-21 Open Load Detection Voltage (VOL) vs Temperature
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VEN = 0 V to 3.3 VVOUT = 0 VVDIAG_EN = 0 V
ROUT = 1 kΩ
Figure 7-23 VIH vs Temperature
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VEN = 0.8 VVOUT = 0 VVDIAG_EN = 0 V
ROUT = 1 kΩ
Figure 7-25 IIL vs Temperature
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ROUT = 2.6 ΩRSNS = 1 kΩVDIA_EN = 5 V
VSEL1 = VSEL2 = 0 V
Figure 7-27 Turn-on Time (tON)
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ROUT = 2.6 ΩRSNS = 1 kΩVDIA_EN= 0 V to 5 V
VSEL1 = VSEL2 = 0 V
Figure 7-29 ISNS Settling Time (tSNSION1) on DIA_EN Transition
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VOUT = VBBRSNS = 1 kΩVSEL1 = VSEL2 = 0 V
VEN = 0 VVDIAG_EN = 5 V
Figure 7-31 Open Load Detection Time (tOL2) on Rising DIAG_EN
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VBB = 13.5 VTA = 125°CLOUT = 5 mH
VEN = 0 V to 5 V, 5 V to 0 V
Figure 7-33 Inductive Load Demagnetization
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VOUT = 0 VVEN = 0 VVDIAG_EN = 0 V
Figure 7-2 Standby Current (ISB) vs Temperature
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IOUT = 0 AVEN = 5 VVDIAG_EN = 5 V
RSNS = 1 kΩVSEL1 = VSEL2 = 0 V
Figure 7-4 Quiescent Current (IQ) vs Temperature
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IOUT = 200 mAVEN = 5 VVDIAG_EN = 0 V
RSNS = 1 kΩVBB = 13.5 V
Figure 7-6 On Resistance (RON) vs VBB
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ROUT = 2.6 ΩVEN = 5 V to 0 VVDIAG_EN = 0 V
RSNS = 1 kΩVBB = 13.5 V
Figure 7-8 Turn-off Delay Time (tDF) vs Temperature
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ROUT = 2.6 ΩVEN = 5 V to 0 VVDIAG_EN = 0 V
RSNS = 1 kΩVBB = 13.5 V
Figure 7-10 VOUT Slew Rate Falling (SRF) vs Temperature
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ROUT = 2.6 ΩVEN = 5 V to 0 VVDIAG_EN = 0 V
RSNS = 1 kΩVBB = 13.5 V
Figure 7-12 Turn-off Time (tOFF) vs Temperature
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VSEL1 = VSEL2 = 0 VVEN = 5 VVDIAG_EN = 5 V
RSNS = 1 kΩVBB = 13.5 V
Figure 7-14 Current Sense Output Current (ISNSI ) vs Load Current (IOUT) across Temperature
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VSEL1 = 5 VVSEL2 = 0 VVDIAG_EN = 5 V
RSNS = 1 kΩVEN = 0 V
Figure 7-16 Temperature Sense Output Current (ISNST) vs Temperature
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VSEL1 = VSEL2 = 0 VVEN = 0 VVDIAG_EN = 5 V
RSNS = 500 ΩVOUT Floating
Figure 7-18 Fault High Output Current (ISNSFH) vs Temperature
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VBB = 13.5 V VOUT = 0 V VDIAG_EN = 0 V
Device Version C VEN = 5 V VLATCH = 5 V
Figure 7-20 Current Limit (ICL) vs Temperature
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VEN = 3.3 V to 0 VVOUT = 0 VVDIAG_EN = 0 V
ROUT = 1 kΩ
Figure 7-22 VIL vs Temperature
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VEN = 0 V to 3.3 V and 3.3 V to 0 VVOUT = 0 VVDIAG_EN = 0 V
ROUT = 1 kΩ
Figure 7-24 VIHYS vs Temperature
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VEN = 2 VVOUT = 0 VVDIAG_EN = 0 V
ROUT = 1 kΩ
Figure 7-26 IIH vs Temperature
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ROUT = 2.6 ΩRSNS = 1 kΩVDIA_EN = 5 V
VSEL1 = VSEL2 = 0 V
Figure 7-28 Turn-off Time (tOFF) and Sense Settle Time (tSNSION2)
GUID-6A6EF28F-850C-446A-8320-E05FCD08693F-low.gif
IOUT = 1 A to 5 ARSNS = 1 kΩVDIA_EN = 5 V
VSEL1 = VSEL2 = 0 V
Figure 7-30 ISNS Settling Time (tSETTLEH) on Rising Load Step
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VBB = 13.5 VC Device VersionVOUT = 0 V
VEN = 0 V to 5 VTA = 25°C
Figure 7-32 Short Circuit Behavior