SNOSDF7A May   2023  – December 2023 LM74703-Q1 , LM74704-Q1

PRODUCTION DATA  

  1.   1
  2. Features
  3. Applications
  4. Description
  5. Device Comparison Table
  6. Pin Configuration and Functions
  7. Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Switching Characteristics
    7. 6.7 Typical Characteristics
  8. Parameter Measurement Information
  9. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Input Voltage
      2. 8.3.2 Charge Pump
      3. 8.3.3 Gate Driver
      4. 8.3.4 Enable
      5. 8.3.5 FET Status Indication (FETGOOD)
    4. 8.4 Device Functional Modes
      1. 8.4.1 Shutdown Mode
      2. 8.4.2 Conduction Mode
        1. 8.4.2.1 Regulated Conduction Mode
        2. 8.4.2.2 Full Conduction Mode
        3. 8.4.2.3 Reverse Current Protection Mode
  10. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Design Considerations
        2. 9.2.2.2 MOSFET Selection
        3. 9.2.2.3 Charge Pump VCAP, Input and Output Capacitance
        4. 9.2.2.4 Selection of TVS Diodes for 12-V Battery Protection Applications
        5. 9.2.2.5 Selection of TVS Diodes and MOSFET for 24-V Battery Protection Applications
      3. 9.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

Package Options

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

Typical Characteristics

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Figure 6-1 Shutdown Supply Current vs Supply Voltage
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Figure 6-3 Enable Sink Current vs Supply Voltage
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Figure 6-5 Charge Pump Current vs Supply Voltage at VCAP = 6 V
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Figure 6-7 Charge Pump V-I Characteristics at ANODE = 3.2 V
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Figure 6-9 Reverse Current Blocking Delay vs Temperature
GUID-20231124-SS0I-5G4H-CVWS-DR0CT4RGLZLR-low.svgFigure 6-11 FETGOOD Assert Delay
GUID-20231124-SS0I-RQ3V-X7V2-C3PP0LRBCWQ9-low.svgFigure 6-13 LM74703-Q1 FETGOOD Output Level (Push-Pull Variant)
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Figure 6-15 Charge Pump UVLO Threshold vs Temperature
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Figure 6-17 Gate Current vs Forward Voltage Drop
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Figure 6-2 Operating Quiescent Current vs Supply Voltage
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Figure 6-4 CATHODE Sink Current vs Supply Voltage
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Figure 6-6 Charge Pump V-I Characteristics at ANODE >= 12 V
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Figure 6-8 Enable Falling Threshold vs Temperature
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Figure 6-10 Forward Recovery Delay vs Temperature
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Figure 6-12 Enable to Gate Delay vs Temperature
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Figure 6-14 Charge Pump ON/OFF Threshold vs Temperature
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Figure 6-16 ANODE POR Threshold vs Temperature