SLUSAW9F February   2012  – November 2014 UCC27511 , UCC27512


  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Description (Continued)
  6. UCC2751x Product Family
  7. Pin Configuration and Functions
  8. Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 Handling Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 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. 10Application 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
        7. Thermal Information
        8. Power Dissipation
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Related Links
    2. 13.2 Trademarks
    3. 13.3 Electrostatic Discharge Caution
    4. 13.4 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

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

6 UCC2751x Product Family

The UCC2751x family of gate-driver products (Table 1) represent Texas Instruments’ latest generation of single-channel low-side high-speed gate-driver devices featuring high-source/sink current capability, industry best-in-class switching characteristics and a host of other features (Table 2) all of which combine to ensure efficient, robust and reliable operation in high-frequency switching power circuits.

Table 1. UCC2751x Product Family Summary

UCC27511DBV SOT-23, 6 pin 4-A/8-A
(Asymmetrical Drive)
(low voltage, independent of VDD bias voltage)
UCC27512DRS 3-mm x 3-mm WSON, 6 pin
UCC27516DRS (1) 3-mm x 3-mm WSON, 6 pin 4-A/4-A
(Symmetrical Drive)
UCC27517DBV (1) SOT-23, 5 pin
UCC27518DBV (1) SOT-23, 5 pin CMOS
(follows VDD bias voltage)
UCC27519DBV (1) SOT-23, 5 pin
(1) Visit for the latest product datasheet.

Table 2. UCC2751x Features and Benefits

High Source and Sink Current Capability
4 A and 8 A (Asymmetrical) – UCC2751/6/7/8/9
4 A and 4 A (Symmetrical) – UCC27511 and UCC27512
High current capability offers flexibility in employing UCC2751x family of devices to drive a variety of power switching devices at varying speeds
Best-in-class 13-ns (typ) Propagation delay Extremely low pulse-transmission distortion
Expanded VDD Operating range of 4.5 V to 18 V Flexibility in system design
Low VDD operation ensures compatibility with emerging wide band-gap power devices such as GaN
Expanded Operating Temperature range of –40°C to 140°C
(See Electrical Characteristics table)
VDD UVLO Protection Outputs are held low in UVLO condition, which ensures predictable glitch-free operation at power up and power down
Outputs held low when input pins (INx) in floating condition Safety feature, especially useful in passing abnormal condition tests during safety certification
Ability of input pins (and enable pin in UCC27518/9) to handle voltage levels not restricted by VDD pin bias voltage System simplification, especially related to auxiliary bias supply architecture
Split output structure in UCC27511 (OUTH, OUTL) Allows independent optimization of turnon and turnoff speeds
Strong sink current (8 A) and low pulldown impedance (0.375 Ω) in UCC27511 and UCC27512 High immunity to C x dV/dt Miller turnon events
CMOS/TTL compatible input-threshold logic with wide hysteresis in UCC27511, UCC27512, UCC27516 and UCC27517 Enhanced noise immunity, while retaining compatibility with microcontroller logic-level input signals (3.3 V, 5 V) optimized for digital power
CMOS input threshold logic in UCC27518/9 (VIN_H – 70% VDD, VIN_L – 30% VDD) Well suited for slow input-voltage signals, with flexibility to program delay circuits (RCD)