Features and Benefits

  • AEC-Q100 Qualified for Automotive Applications
  • Bootstrap Supply Voltage to 114V
  • Wide VCC Voltage: 7.2V to 13.5V
  • Adaptive Shoot-Through Protection
  • 2.5A Peak TG Pull-Up Current
  • 3A Peak BG Pull-Up Current
  • 1.2Ω TG Driver Pull-Down
  • 0.55Ω BG Driver Pull-Down
  • 5ns TG Fall Time Driving 1nF Load
  • 8ns TG Rise Time Driving 1nF Load
  • 3ns BG Fall Time Driving 1nF Load
  • 6ns BG Rise Time Driving 1nF Load
  • Drives Both High and Low Side N-Channel MOSFETs
  • Undervoltage Lockout
  • Thermally Enhanced 8-Lead MSOP Package

Product Details

The LTC4444 is a high frequency high voltage gate driver that drives two N-channel MOSFETs in a synchronous DC/DC converter with supply voltages up to 100V. This powerful driver reduces switching losses in MOSFETs with high gate capacitance.

The LTC4444 is configured for two supply-independent inputs. The high side input logic signal is internally level-shifted to the bootstrapped supply, which may function at up to 114V above ground.

The LTC4444 contains undervoltage lockout circuits that disable the external MOSFETs when activated. Adaptive shoot-through protection prevents both MOSFETs from conducting simultaneously.

For a similar driver in this product family, please refer to the chart below.

Parameter LTC4444 LTC4446 LTC4444-5
Shoot-Through Protection Yes No Yes
Absolute Max TS 100V 100V 100V
MOSFET Gate Drive 7.2V to 13.5V 7.2V to 13.5V 4.5V to 13.5V
VCC UV+ 6.6V 6.6V 4V
VCC UV 6.15V 6.15V 3.55V


  • Distributed Power Architectures
  • Automotive Power Supplies
  • High Density Power Modules
  • Telecommunications

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Tools & Simulations


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Design Resources

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PCN-PDN Information

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