SLUSFC0 September   2024 LMG3614

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Switching Characteristics
    7. 5.7 Typical Characteristics
  7. 6 Parameter Measurement Information
    1. 6.1 GaN Power FET Switching Parameters
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 GaN Power FET Switching Capability
      2. 7.3.2 Turn-On Slew-Rate Control
      3. 7.3.3 Input Control Pin (IN)
      4. 7.3.4 AUX Supply Pin
        1. 7.3.4.1 AUX Power-On Reset
        2. 7.3.4.2 AUX Under-Voltage Lockout (UVLO)
      5. 7.3.5 Overtemperature Protection
      6. 7.3.6 Fault Reporting
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Turn-On Slew-Rate Design
      3. 8.2.3 Application Curve
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
        1. 8.4.1.1 Solder-Joint Stress Relief
        2. 8.4.1.2 Signal-Ground Connection
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

7.3.3 Input Control Pin (IN)

The IN pin is used to turn the GaN power FET on and off.

The IN pin has a typical 1V input-voltage-threshold hysteresis for noise immunity. The pin also has a typical 400kΩ pull-down resistance to protect against floating inputs. The 400kΩ saturates for nominal input voltages above 4V to limit the maximum input pull-down current to a typical 10µA.

The IN turn-on action is blocked by the following conditions:

  • AUX UVLO
  • Overtemperature protection

The AUX UVLO and overtemperature protection are independent of the IN logic state. Figure 7-2 shows the IN independent blocking condition operation.


LMG3614 IN Independent Blocking Condition Operation

Figure 7-2 IN Independent Blocking Condition Operation