LTC4446
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LTC4446

High Voltage High Side/Low Side N-Channel MOSFET Driver

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 4
1ku List Price Starting From $2.07
Features
  • Bootstrap Supply Voltage Up to 114V
  • Wide VCC Voltage: 7.2V to 13.5V
  • 2.5A Peak Top Gate Pull-Up Current
  • 3A Peak Bottom Gate Pull-Up Current
  • 1.2Ω Top Gate Driver Pull-Down
  • 0.55Ω Bottom Gate Driver Pull-Down
  • 5ns Top Gate Fall Time Driving 1nF Load
  • 8ns Top Gate Rise Time Driving 1nF Load
  • 3ns Bottom Gate Fall Time Driving 1nF Load
  • 6ns Bottom Gate Rise Time Driving 1nF Load
  • Drives Both High and Low Side N-Channel MOSFETs
  • Undervoltage Lockout
  • Thermally Enhanced 8-Pin MSOP Package
Additional Details
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The LTC4446 is a high frequency high voltage gate driver that drives two N-channel MOSFETs in a DC/DC converter with supply voltages up to 100V. The powerful driver capability reduces switching losses in MOSFETs with high gate capacitance. The LTC4446’s pull-up for the top gate driver has a peak output current of 2.5A and its pull-down has an output impedance of 1.2Ω. The pull-up for the bottom gate driver has a peak output current of 3A and the pull-down has an output impedance of 0.55Ω.

The LTC4446 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 LTC4446 contains undervoltage lockout circuits that disable the external MOSFETs when activated.

The LTC4446 is available in the thermally enhanced 8-lead MSOP package.

The LTC4446 does not have adaptive shoot-through protection. For similar drivers with adaptive shoot-through protection, please refer to the chart below.

PARAMETER LTC4446 LTC4444 LTC4444-5
Shoot-Through Protection No Yes 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 3.5V

Applications

  • Distributed Power Architectures
  • Automotive Power Supplies
  • High Density Power Modules
  • Telecommunication Systems
Part Models 4
1ku List Price Starting From $2.07

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

PCN

Oct 11, 2022

- 22_0244

Epoxy Change from Henkel 8290 to 8290A for MSOP Package

LTC4446EMS8E#PBF

PRODUCTION

LTC4446EMS8E#TRPBF

PRODUCTION

LTC4446IMS8E#PBF

PRODUCTION

LTC4446IMS8E#TRPBF

PRODUCTION

Feb 3, 2020

- 20_0128

Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC

LTC4446EMS8E#PBF

PRODUCTION

LTC4446EMS8E#TRPBF

PRODUCTION

LTC4446IMS8E#PBF

PRODUCTION

LTC4446IMS8E#TRPBF

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Oct 11, 2022

- 22_0244

arrow down

Epoxy Change from Henkel 8290 to 8290A for MSOP Package

LTC4446EMS8E#PBF

PRODUCTION

LTC4446EMS8E#TRPBF

PRODUCTION

LTC4446IMS8E#PBF

PRODUCTION

LTC4446IMS8E#TRPBF

PRODUCTION

Feb 3, 2020

- 20_0128

arrow down

Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC

LTC4446EMS8E#PBF

PRODUCTION

LTC4446EMS8E#TRPBF

PRODUCTION

LTC4446IMS8E#PBF

PRODUCTION

LTC4446IMS8E#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Tools & Simulations

Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

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