LTC4440A-5 - High Speed, High Voltage, High Side Gate Driver


  • Wide Operating VIN Range: Up to 80V
  • Rugged Architecture Tolerant of 100V VIN Transients
  • Powerful 1.85Ω Driver Pull-Down (with 6V Supply)
  • Powerful 1.1A Peak Current Driver Pull-Up (with 6V Supply)
  • 7ns Fall Time Driving 1000pF Load
  • 10ns Rise Time Driving 1000pF Load
  • Drives Standard Threshold MOSFETs
  • TTL/CMOS Compatible Inputs with Hysteresis
  • Input Thresholds are Independent of Supply
  • Undervoltage Lockout
  • Thermally Enhanced 8-Lead MSOP Package

Typical Application

LTC4440A-5 Typical Application
LTC4440A-5 Typical Application


The LTC®4440A-5 is a high frequency high side N-channel MOSFET gate driver that is designed to operate in applications with VIN voltages up to 80V. The LTC4440A-5 can also withstand and continue to function during 100V VIN transients. The powerful driver capability reduces switching losses in MOSFETs with high gate capacitances. The LTC4440A-5’s pull-up has a peak output current of 1.1A and its pull-down has an output impedance of 1.85Ω.

The LTC4440A-5 features supply independent TTL/CMOS compatible input thresholds with 350mV of hysteresis. The input logic signal is internally level-shifted to the bootstrapped supply, which may function at up to 95V above ground.

The LTC4440A-5 is optimized for driving (5V) logic level FETs and contains an undervoltage lockout circuit that disables the external MOSFET when activated.

The LTC4440A-5 is available in the thermally enhanced 8-lead MSOP package.

Max Operating TS 80V 60V 80V
Abssolute Max TS 100V 80V 100V
MOSFET Gate Drive 4V to 15V 4V to 15V 8V to 15V
VCC UV+ 3.2 3.2 6.3
VCC UV- 3.04V 3.04V 6.0V


CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
LTC4440AHMS8E-5#PBF MS-8E MS8E H 05-08-1662 Yes
LTC4440AHMS8E-5#TRPBF MS-8E MS8E H 05-08-1662 Yes
LTC4440AIMS8E-5#PBF MS-8E MS8E I 05-08-1662 Yes
LTC4440AIMS8E-5#TRPBF MS-8E MS8E I 05-08-1662 Yes
LTC4440AMPMS8E-5#PBF MS-8E MS8E MP 05-08-1662 Yes
LTC4440AMPMS8E-5#TRPBF MS-8E MS8E MP 05-08-1662 Yes

LTC4440A-5 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
LTC4440AHMS8E-5#PBF MS-8E H $3.13 $2.19 Yes
LTC4440AHMS8E-5#TRPBF MS-8E H $2.25 Yes
LTC4440AIMS8E-5#PBF MS-8E I $2.70 $1.89 Yes
LTC4440AIMS8E-5#TRPBF MS-8E I $1.95 Yes
LTC4440AMPMS8E-5#PBF MS-8E MP $7.31 $5.12 Yes
LTC4440AMPMS8E-5#TRPBF MS-8E MP $5.18 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Click here to view our complete list of demo boards


  • Automotive Power Systems
  • Telecommunications Power Systems
  • Distributed Power Architectures
  • Server Power Supplies
  • High Density Power Modules
  • General Purpose Low or High Side Driver

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