L6743D

NRND

High current MOSFET driver

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  • 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.

    Key Features

    • SO8 package
    • Preliminary OV protection
    • Flexible gate-drive: 5 V to 12 V compatible
    • Adaptive dead-time management
    • Dual MOSFET driver for synchronous rectified converters
    • Integrated bootstrap diode
    • High driving current for fast external MOSFET switching
    • Enable pin
    • High-impedance (HiZ) management for output stage shutdown
    • High frequency operation

Circuit Diagram

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Part Number
Package
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Temperature (°C) Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
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L6743DTR SO-8 Tape And Reel 0 125
NRND
- EAR99
MORE INFO

Country of Origin:

-

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Distributor availability ofL6743DTR

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Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 17 1 Order Now

Distributor reported inventory date: 2020-01-23

Distributor Name

DIGIKEY

Stock

17

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-01-23

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L6743D SO-8 Tube 0 125
NRND
- - EAR99
MORE INFO

Country of Origin:

-

No availability of distributors reported, please contact our sales office

L6743DTR

Package

SO-8

Packing Type

Tape And Reel

Unit Price (US$)

*

Distributor availability ofL6743DTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 17 1 Order Now

Distributor reported inventory date: 2020-01-23

Distributor Name

DIGIKEY

Stock

17

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-01-23

Operating Temperature (°C)

(min)

0

(max)

125

Marketing Status

NRND

Unit Price (US$)

-

Quantity

-

ECCN (US)

EAR99

Country of Origin

-

L6743D

Package

SO-8

Packing Type

Tube

Unit Price (US$)

*

Operating Temperature (°C)

(min)

0

(max)

125

Marketing Status

NRND

Unit Price (US$)

-

Quantity

-

ECCN (US)

EAR99

Country of Origin

-

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

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00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS6010
      High current MOSFET driver
      1.1
      417.52 KB
      PDF
      DS6010

      High current MOSFET driver

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L6743D
NRND
SO-8 Industrial Ecopack1
L6743DTR
NRND
SO-8 Industrial Ecopack1

L6743D

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

NRND

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack1

L6743DTR

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

NRND

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack1

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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