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  • L6743D

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L6743 Series Dual 2 A 12 V High Current MOSFET Driver Surface Mount - SOIC-8

Manufacturer : STMicroelectronics, Inc
Package/Case : SO-8
Product Categories : MOSFET & Power Driver ICs
Datasheet: L6743D Datasheet (PDF)
RoHs Status: Rohs
In-stock: 673


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L6743D Product Details

L6743D is a flexible, high-frequency dual-driver specifically designed to drive N-channel MOSFETs connected in synchronous-rectified buck topology.

Combined with ST PWM controllers, the driver allows implementing complete voltage regulator solutions for modern high-current CPUs and DCDC conversion in general. L6743D embeds high-current drivers for both high-side and lowside MOSFETS. The device accepts flexible power supply (5 V to 12 V) to optimize the gatedrive voltage for high-side and low-side maximizing the system efficiency. The bootstrap diode is embedded saving the use of external diodes. Anti shoot-through management avoids high-side and low-side MOSFET to conduct simultaneously and, combined with adaptive dead-time control, minimizes the LS body diode conduction time. L6743D embeds preliminary OV protection: after Vcc overcomes the UVLO and while the device is in HiZ, the LS MOSFET is turned ON to protect the load in case the output voltage overcomes a warning threshold protecting the output against HS failures. The driver is available is SO8 package.


  • SO8package
  • PreliminaryOVprotection
  • Flexiblegate-drive:5Vto12Vcompatible
  • Adaptivedead-timemanagement
  • DualMOSFETdriverforsynchronousrectifiedconverters
  • Integratedbootstrapdiode
  • HighdrivingcurrentforfastexternalMOSFETswitching
  • Enablepin
  • High-impedance(HiZ)managementforoutputstageshutdown
  • Highfrequencyoperation

L6743D Block Diagram
(Picture: Diagram)

Technical Parameters

  • Product
  • Driver ICs - Various
  • Configuration
  • Inverting, Non-Inverting
  • Number of Drivers
  • 2
  • Supply Voltage Max
  • 12 V
  • Supply Voltage Min
  • 5 V
  • Supply Current
  • 5 mA
  • Maximum Power Dissipation
  • 1.15 W
  • Maximum Operating Temperature
  • + 125 C
  • Mounting Style
  • Package / Case
  • SO-8
  • Type
  • High Current Mosfet Driver
  • Minimum Operating Temperature
  • 0 C
  • Number of Outputs
  • 2
  • Operating Supply Voltage
  • 5 V to 12 V
  • Output Voltage
  • 10 V
  • Packaging
  • Tube

L6743D Datasheet

L6743D Related Products

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Estimated Delivery Time: Dec 12 - Dec 17 days (choose Expedited at checkout).

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1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


Q: How does Jotrin guarantee that L6743D is the original manufacturer or agent of ST?
We have a professional business development department to strictly test and verify the qualifications of ST original manufacturers and agents. All ST suppliers must pass the qualification review before they can publish their L6743D devices; we pay more attention to the channels and quality of L6743D products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of L6743D chips? Including ST original factory information, MOSFET & Power Driver ICs application, L6743D pictures?
You can use Jotrin's intelligent search engine, or filter by Power Management ; MOSFET and IGBT Gate Drivers ; Multiple Channel Drivers category, or find it through STMicroelectronics, Inc Information page.
Q: Are the ST's L6743D price and stock displayed on the platform accurate?
The ST's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for L6743D, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
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Once your order has been processed for shipment, our sales will send you an e-mail advising you of the shipping status and tracking number.
Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement of L6743D?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the L6743D we delivered, we will accept the replacement or return of the L6743D only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of L6743D.
(3)The L6743D is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy.
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STMicroelectronics, Inc

ST Microelectronics is a global independent semiconductor company and a leader in developing and delivering semiconductor solutions across the spectrum of microelectronics applications, and that designs, develops, manufactures and markets a broad spectrum of products....
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