SLVSFJ6 November   2020 TPS27SA08

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-36ACA20F-749A-4278-8C43-EF6D8AC8F455-low.gif
VBB = 13.5 V to 0 V ROUT = 1 kΩ VDIAG__EN = 0 V
VEN = 5 V
Figure 7-1 Falling Undervoltage Lockout (VUVLOF) vs Temperature
GUID-20201020-CA0I-TJ5X-HP1X-1X8KTVMKV4J1-low.gif
VOUT = 0 V VEN = 0 V VDIAG_EN = 0 V
Figure 7-3 Output Leakage Current (IOUT(standby)) vs Temperature
GUID-20201020-CA0I-BLJG-RJQ4-5XVKJP4CMSVL-low.gif
IOUT = 200 mA VEN = 5 V VDIAG_EN = 0 V
RSNS = 1 kΩ
Figure 7-5 On Resistance (RON) vs Temperature
GUID-EDEE4A73-5AEC-48ED-84B4-AC0E0B7E0E77-low.gif
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
GUID-CA177316-3BCA-4BB2-A397-A2B586320993-low.gif
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
GUID-82EFD110-64B8-44ED-841F-615C63420D99-low.gif
ROUT = 2.6 Ω VEN = 0 V to 5 V VDIAG_EN = 0 V
RSNS = 1 kΩ VBB = 13.5 V
Figure 7-11 Turn-on Time (tON) vs Temperature
GUID-F5275767-1DD1-4AE6-8359-173E2E88E12F-low.gif
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
GUID-E77AC18A-7507-4B48-8009-846B759132F3-low.gif
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
GUID-FAB4D706-7C0A-436C-8235-E60D8DD2B2C3-low.gif
VSEL1 = VSEL2 = 5 VVEN = 0 VVDIAG_EN = 5 V
RSNS = 1 kΩIOUT = 0 A
Figure 7-17 Voltage Sense Output Current (ISNSV) vs VBB
GUID-1E92E0F8-5C0D-46E2-9DEB-3326BA6A5034-low.gif
VSEL1 = VSEL2 = 0 VVEN = 5 VVDIAG_EN = 5 V
RSNS = 10 kΩIOUT = 4 A
Figure 7-19 Sense Pin Clamp Voltage (VSNSCLAMP) vs Temperature
GUID-A30D5DC2-1D1C-4CBC-A8A8-9B7FE0D6EA3F-low.gif
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
GUID-6167D46E-E20F-46F5-8CF9-D95B6F734C99-low.gif
VEN = 0 V to 3.3 VVOUT = 0 VVDIAG_EN = 0 V
ROUT = 1 kΩ
Figure 7-23 VIH vs Temperature
GUID-CD5C7542-A343-40CA-8E7E-50445BDC2FD2-low.gif
VEN = 0.8 VVOUT = 0 VVDIAG_EN = 0 V
ROUT = 1 kΩ
Figure 7-25 IIL vs Temperature
GUID-D3AE2967-7773-49BF-BAB8-AE99B5F3A93D-low.gif
ROUT = 2.6 ΩRSNS = 1 kΩVDIA_EN = 5 V
VSEL1 = VSEL2 = 0 V
Figure 7-27 Turn-on Time (tON)
GUID-2C1973FA-E85C-43D8-B128-A8BE829B85BE-low.gif
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
GUID-40CCD557-E626-4BF8-8D81-86636AAD4C7F-low.gif
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
GUID-CF3EFBD9-81CF-4565-BCC7-38C506619074-low.gif
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
GUID-20201020-CA0I-WGS4-ZFHS-ZXTFKPHPTH08-low.gif
VOUT = 0 V VEN = 0 V VDIAG_EN = 0 V
Figure 7-2 Standby Current (ISB) vs Temperature
GUID-20201020-CA0I-QFMP-8W5W-T2LPZRWPNTZL-low.gif
IOUT = 0 A VEN = 5 V VDIAG_EN = 5 V
RSNS = 1 kΩ VSEL1 = VSEL2 = 0 V
Figure 7-4 Quiescent Current (IQ) vs Temperature
GUID-701257E9-F854-4E0E-957B-EBDFE7010A32-low.gif
IOUT = 200 mAVEN = 5 VVDIAG_EN = 0 V
RSNS = 1 kΩVBB = 13.5 V
Figure 7-6 On Resistance (RON) vs VBB
GUID-375EA4D4-27CD-4E00-B0C2-05346A92A428-low.gif
ROUT = 2.6 Ω VEN = 5 V to 0 V VDIAG_EN = 0 V
RSNS = 1 kΩ VBB = 13.5 V
Figure 7-8 Turn-off Delay Time (tDF) vs Temperature
GUID-CD4EDF49-5840-4DE3-8097-B502838276F5-low.gif
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
GUID-5C459B47-4C81-453B-B546-08DE95D5BCA4-low.gif
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
GUID-81791E60-E4F4-40B4-B245-1A9A2FF3DAD4-low.gif
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
GUID-133D9689-463D-4164-91AF-CF9D4C47AD3E-low.gif
VSEL1 = 5 VVSEL2 = 0 VVDIAG_EN = 5 V
RSNS = 1 kΩVEN = 0 V
Figure 7-16 Temperature Sense Output Current (ISNST) vs Temperature
GUID-3A63A6B5-535D-466E-8728-B03A13CB665B-low.gif
VSEL1 = VSEL2 = 0 VVEN = 0 VVDIAG_EN = 5 V
RSNS = 500 ΩVOUT Floating
Figure 7-18 Fault High Output Current (ISNSFH) vs Temperature
GUID-D82D827F-F19F-40C1-AA10-9CFA855B7271-low.gif
VBB = 13.5 VVOUT = 0 VVDIAG_EN = 0 V
Device Version CVEN = 5 VVLATCH = 5 V
Figure 7-20 Current Limit (ICL) vs Temperature
GUID-618B63CB-0A0F-4255-A455-AE333855D133-low.gif
VEN = 3.3 V to 0 VVOUT = 0 VVDIAG_EN = 0 V
ROUT = 1 kΩ
Figure 7-22 VIL vs Temperature
GUID-3359A6E1-3550-483A-8038-23DC6C062567-low.gif
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
GUID-387107DD-CBEF-4678-8081-693536EE3CE5-low.gif
VEN = 2 VVOUT = 0 VVDIAG_EN = 0 V
ROUT = 1 kΩ
Figure 7-26 IIH vs Temperature
GUID-E9160CC3-434F-4EAA-BA3A-735E00E35AC2-low.gif
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-54580315-7316-41E4-AE39-2D5D3F026F6F-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
GUID-08BB1024-87F1-4C0F-9FD8-F647A7E3657B-low.gif
VBB = 13.5 VC Device VersionVOUT = 0 V
VEN = 0 V to 5 VTA = 25°C
Figure 7-32 Short Circuit Behavior