SLVSC90B August   2013  – August 2015 UCC27518A-Q1 , UCC27519A-Q1


  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Description (continued)
  6. Device Comparison Table
  7. Pin Configuration and Functions
  8. Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Switching Characteristics
    7. 8.7 Typical Characteristics
  9. Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 VDD and Undervoltage Lockout
      2. 9.3.2 Operating Supply Current
      3. 9.3.3 Input Stage
      4. 9.3.4 Enable Function
      5. 9.3.5 Output Stage
      6. 9.3.6 Low Propagation Delays
    4. 9.4 Device Functional Modes
  10. 10 Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. Input-to-Output Logic
        2. Input Threshold Type
        3. VDD Bias Supply Voltage
        4. Peak Source and Sink Currents
        5. Enable and Disable Function
        6. Propagation Delay
      3. 10.2.3 Application Curve
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
    3. 12.3 Thermal Consideration
    4. 12.4 Power Dissipation
  13. 13Device and Documentation Support
    1. 13.1 Related Links
    2. 13.2 Community Resource
    3. 13.3 Trademarks
    4. 13.4 Electrostatic Discharge Caution
    5. 13.5 Glossary
  14. 14Mechanical, Packaging, and Orderable Information



  • DBV|5

1 Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Automotive Qualified Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C6
  • Low-Cost Gate-Driver Device Offering Superior Replacement of NPN and PNP Discrete Solutions
  • Pin-to-Pin Compatible With TI's TPSS2828-Q1 and the TPS2829-Q1
  • 4-A Peak Source and 4-A Peak Sink Symmetrical Drive
  • Fast Propagation Delays (17-ns typical)
  • Fast Rise and Fall Times (8-ns and 7-ns typical)
  • 4.5-V to 18-V Single Supply Range
  • Outputs Held Low During VDD UVLO (Ensures Glitch-Free Operation at Power-Up and Power-Down)
  • CMOS Input Logic Threshold (Function of Supply Voltage With Hysteresis)
  • Hysteretic Logic Thresholds for High Noise Immunity
  • EN Pin for Enable Function (Allowed to be no Connect)
  • Ability to Support Negative Voltages (–5 V) at Input and Enable pins
  • Output Held Low when Input Pins are Floating
  • Input Pin Absolute Maximum Voltage Levels Not Restricted by VDD Pin Bias Supply Voltage
  • Operating Temperature Range of –40°C to 140°C
  • 5-Pin DBV Package (SOT-23)

2 Applications

  • Automotive
  • Switch-Mode Power Supplies
  • DC-to-DC Converters
  • Companion Gate Driver Devices for Digital Power Controllers
  • Solar Power, Motor Control, UPS
  • Gate Driver for Emerging Wide Band-Gap Power Devices (such as GaN)

3 Description

The UCC2751xA-Q1 single-channel high-speed low-side gate driver devices effectively drive MOSFET and IGBT power switches. With a design that inherently minimizes shoot-through current, the UCC2751xA-Q1 family of devices sources and sinks high, peak-current pulses into capacitive loads offering rail-to-rail drive capability and extremely small propagation delay typically 17 ns.

The UCC2751xA-Q1 family of devices provides 4-A source, 4-A sink (symmetrical drive) peak-drive current capability at VDD = 12 V.

The UCC2751xA-Q1 family of devices operates over a wide VDD range of 4.5 V to 18 V and wide temperature range of –40°C to 140°C. Internal undervoltage lockout (UVLO) circuitry on VDD pin holds output low outside VDD operating range. The ability to operate at low voltage levels such as below 5 V, along with best in class switching characteristics, is especially suited for driving emerging wide band-gap power switching devices such as GaN power-semiconductor devices.

The input pin threshold of the UCC2751xA-Q1 family of devices is based on CMOS logic where the threshold voltage is a function of the VDD supply voltage. Typically, the input high threshold (VIN–H) is 55% VDD and the input low threshold (VIN–L) is 39% VDD. Wide hysteresis (16% VDD typically) between the high and low thresholds offers excellent noise immunity and allows users to introduce delays using RC circuits between the input PWM signal and the INx pin of the device.

Device Information(1)

UCC27518A-Q1 SOT-23 (5) 2.90 mm × 1.60 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

Typical Application Diagram

UCC27518A-Q1 UCC27519A-Q1 alt_slvsc90.gif