SNOSDE6B december   2022  – july 2023 LM74900-Q1 , LM74910-Q1

PRODUCTION DATA  

  1.   1
  2. Features
  3. Applications
  4. Description
  5. Revision History
  6. Device Comparison Table
  7. Pin Configuration and Functions
  8. 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
  9. Parameter Measurement Information
  10. Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Charge Pump
      2. 9.3.2 Dual Gate Control (DGATE, HGATE)
        1. 9.3.2.1 Reverse Battery Protection (A, C, DGATE)
        2. 9.3.2.2 Load Disconnect Switch Control (HGATE, OUT)
      3. 9.3.3 Overcurrent Protection (CS+, CS-, ILIM, IMON, TMR)
        1. 9.3.3.1 Pulse Overload Protection, Circuit Breaker
        2. 9.3.3.2 Overcurrent Protection With Latch-Off
        3. 9.3.3.3 Short Circuit Protection (ISCP)
        4. 9.3.3.4 Analog Current Monitor Output (IMON)
      4. 9.3.4 Undervoltage Protection, Overvoltage Protection, and Battery Voltage Sensing (UVLO, OV, SW)
      5. 9.3.5 Low IQ SLEEP Mode (SLEEP)
      6. 9.3.6 Ultra Low IQ Shutdown (EN)
  11. 10Applications and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical 12-V Reverse Battery Protection Application
      1. 10.2.1 Design Requirements for 12-V Battery Protection
      2. 10.2.2 Automotive Reverse Battery Protection
        1. 10.2.2.1 Input Transient Protection: ISO 7637-2 Pulse 1
        2. 10.2.2.2 AC Super Imposed Input Rectification: ISO 16750-2 and LV124 E-06
        3. 10.2.2.3 Input Micro-Short Protection: LV124 E-10
      3. 10.2.3 Detailed Design Procedure
        1. 10.2.3.1 Design Considerations
        2. 10.2.3.2 Charge Pump Capacitance VCAP
        3. 10.2.3.3 Input and Output Capacitance
        4. 10.2.3.4 Hold-Up Capacitance
        5. 10.2.3.5 Selection of Current Sense Resistor, RSNS
        6. 10.2.3.6 Selection of Scaling Resistor (RSET) and Short-Circuit Protection Setting Resistor (RSCP)
        7. 10.2.3.7 Overcurrent Limit (ILIM), Circuit Breaker Timer (TMR), and Current Monitoring Output (IMON) Selection
        8. 10.2.3.8 Overvoltage Protection and Battery Monitor
      4. 10.2.4 MOSFET Selection: Blocking MOSFET Q1
      5. 10.2.5 MOSFET Selection: Hot-Swap MOSFET Q2
      6. 10.2.6 TVS Selection
      7. 10.2.7 Application Curves
    3. 10.3 Addressing Automotive Input Reverse Battery Protection Topologies With LM749x0-Q1
    4. 10.4 Power Supply Recommendations
      1. 10.4.1 Transient Protection
      2. 10.4.2 TVS Selection for 12-V Battery Systems
    5. 10.5 Layout
      1. 10.5.1 Layout Guidelines
  12. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Support Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  13. 12Mechanical, Packaging, and Orderable Information

Package Options

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

Application Curves

GUID-20221129-SS0I-BFBC-NLTC-TQZC96F7C3NM-low.pngFigure 10-6 Start-Up 12 V With EN Pulled to VS
GUID-20221129-SS0I-LP8N-SL6K-1BQL482CMN72-low.pngFigure 10-8 Reverse Input Voltage –14 V
GUID-20221129-SS0I-M4RR-FZGP-5PXK1BGPWL87-low.pngFigure 10-10 Output Short Circuit Protection (On-The-Fly)
GUID-20221129-SS0I-MHK4-DHDF-WHLZNQW0X8F5-low.pngFigure 10-12 Output Overcurrent Protection (TIMER Duration 1 ms)
GUID-20221129-SS0I-J7BN-VF5T-JFCHLX1G80BM-low.pngFigure 10-14 Overvoltage Protection
GUID-20221129-SS0I-MDZT-NVW4-QZRZSHZVMJMF-low.pngFigure 10-16 Overvoltage Clamp Response (OV Resistor Ladder Referred to VOUT)
GUID-20221130-SS0I-N5RG-GLHX-77SW19L3GF0T-low.pngFigure 10-18 Undervoltage Lockout (UVLO) Recovery
GUID-20221129-SS0I-SRV8-KWVX-G9FLC8X5FRDG-low.pngFigure 10-20 SLEEP Mode Overcurrent Protection (250 mA Typical)
GUID-20221130-SS0I-NLHM-QKNC-BLR8P22FJH67-low.pngFigure 10-22 Load Transient 100 mA to 5 A
GUID-20221129-SS0I-HZMM-DCZZ-DRCQGLRR6RQX-low.pngFigure 10-7 Start-Up 12 V With EN Going Low to High
GUID-20221130-SS0I-NLBC-KWVR-KLK1DLQSRNW5-low.pngFigure 10-9 Inrush Current With No Load at Output
GUID-20221209-SS0I-WT01-N5Q2-DTRFMD3H7XLS-low.pngFigure 10-11 Device Start-Up With Output Short Circuit (TIMER Duration 1 ms)
GUID-20221129-SS0I-FZ79-0CHW-5SCQMFG0RXVV-low.pngFigure 10-13 Output Overcurrent Protection (TIMER Duration 1 ms): Auto Retry
GUID-20221129-SS0I-4NMW-XJM2-7MBM19W0SQMR-low.pngFigure 10-15 Overvoltage Recovery
GUID-20221130-SS0I-BGW8-JFL3-ZXHB5NHT04G6-low.pngFigure 10-17 Undervoltage Lockout (UVLO) Protection (VIN_UVLO = 5.5 V).
GUID-20221129-SS0I-0JRJ-D9RT-BSGSPLCFBCLF-low.pngFigure 10-19 SLEEP Mode Entry (SLEEP = Low, EN = High)
GUID-20221130-SS0I-CSHP-DMCM-XXRNFRFCVV8D-low.pngFigure 10-21 SLEEP Mode Exit (SLEEP = High, EN = High)