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

Typical Characteristics

GUID-20230530-SS0I-SRQF-NFPP-WK7MS4TG0FXG-low.svgFigure 7-1 Operating Quiescent Current vs Supply Voltage
GUID-20230530-SS0I-R8MV-2FVC-NHTCMT56VS84-low.svgFigure 7-3 SLEEP Mode Current vs Supply Voltage
GUID-20230530-SS0I-KLNZ-MM3B-FGGGHVPR5ZVN-low.svg
Figure 7-5 Charge Pump Current vs Supply Voltage at CAP – VS ≥ 6 V (LM74910-Q1)
GUID-20230530-SS0I-M4F7-SB6R-D2MSP0HH625C-low.svg
Figure 7-7 Charge Pump V-I Characteristics at VS ≥ 12 V (LM74910-Q1)
GUID-20230530-SS0I-B3K7-BJSM-835QCRW3FDGT-low.svg
Figure 7-9 HGATE Drive Voltage vs Supply Voltage
GUID-20230530-SS0I-RKSP-KD8R-Z58QVSTPT9QV-low.svg
Figure 7-11 UVLO Thresholds vs Temperature
GUID-20230530-SS0I-V7VK-CJLH-SDZ1TR2GCFPG-low.svg
Figure 7-13 Charge Pump UVLO Threshold vs Temperature
GUID-20230530-SS0I-3RMV-RGTL-KRLQXKQHW21J-low.svgFigure 7-15 ISCP Bias Current vs Temperature
GUID-20230530-SS0I-Q0KZ-2LG2-RN9HCVVWFTCF-low.svgFigure 7-17 VS POR Threshold vs Temperature
GUID-20230530-SS0I-PCTT-NQ0F-SPQ2MDBMTV6M-low.svgFigure 7-19 DGATE Turn On Delay During Forward Conduction
GUID-20230530-SS0I-RSV5-WQM6-JDF1RJCDNCLL-low.svgFigure 7-21 HGATE Turn OFF Delay During SCP
GUID-20230530-SS0I-PK1B-1H1H-BCTV6XXF2B2C-low.svgFigure 7-2 Shutdown Current vs Supply Voltage
GUID-20230530-SS0I-XC6M-Z5V6-TG4JZDKXGJ3R-low.svg
Figure 7-4 Charge Pump Current vs Supply Voltage at CAP – VS ≥ 6 V (LM74900-Q1)
GUID-20230530-SS0I-4QKW-JJWJ-3RTRNTNWZKGB-low.svg
Figure 7-6 Charge Pump V-I Characteristics at VS ≥ 12 V (LM74900-Q1)
GUID-20230530-SS0I-C6KX-TKPL-HKWXMBVC3ZB1-low.svg
Figure 7-8 DGATE Drive Voltage vs Supply Voltage
GUID-20230530-SS0I-DNQB-N1MS-4JMVWQZQFLZZ-low.svg
Figure 7-10 ANODE Leakage Current vs Reverse ANODE Voltage
GUID-20230530-SS0I-CB80-483F-F10ZGRXPBZBR-low.svg
Figure 7-12 OVP Thresholds vs Temperature
GUID-20230530-SS0I-57DK-HTR9-HPK7X8PKFC5M-low.svgFigure 7-14 ISCP to CS– Threshold vs Temperature
GUID-20230530-SS0I-1MBM-CQ10-XBNTMPRNVJST-low.svg
Figure 7-16 VA POR Threshold vs Temperature
GUID-20230530-SS0I-C1JK-C5BB-FXJQBQ2DTPFS-low.svgFigure 7-18 DGATE Turn OFF Delay
GUID-20230530-SS0I-PGTX-ZFWS-B7CJCX7PDSPC-low.svgFigure 7-20 HGATE Turn OFF Delay During OV
GUID-20230630-SS0I-6BXM-HH8W-PSHRZGR9L4ZQ-low.svg
Figure 7-22 Current Monitor Output vs Sense Voltage (RIMON = 5kΩ, RSET = 50Ω)