LTC4446

PRODUCTION

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

Part Models: 4
1ku List Price: Starting From $2.07

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Overview

Bootstrap Supply Voltage Up to 114V
Wide V_CC 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

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

Documentation

Data Sheet 1

LTC4446: High Voltage High Side / Low Side N-Channel MOSFET Driver Data Sheet 05/16/2008

Reliability Data 1

R419 Reliability Data 03/22/2018

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC4446EMS8E#PBF	8-Lead MSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4446EMS8E#TRPBF	8-Lead MSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4446IMS8E#PBF	8-Lead MSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC4446IMS8E#TRPBF	8-Lead MSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 11, 2022 - 22_0244 Epoxy Change from Henkel 8290 to 8290A for MSOP Package
		PCN22_0244_Form Material_Report Qualification Results Summary Delta Qualification Matrix
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
		PCN20_0128_Form Material_Report
LTC4446EMS8E#PBF	PRODUCTION
LTC4446EMS8E#TRPBF	PRODUCTION
LTC4446IMS8E#PBF	PRODUCTION
LTC4446IMS8E#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Tools & Simulations

LTspice 1

LTC4446 Demo Circuit - Fast Turn-On/Turn-Off DC Switch (0-100V Input)

Models for the following parts are available in LTspice:

LTC4446

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