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  • L6743B 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 DC-DC conversion in general. L6743B embeds high-current drivers for both high-side andlow-side MOSFETs. The device accepts flexible power supply (5 V to 12 V) to optimize the gate-drive 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.
    L6743B 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 VFDFPN8 3 x 3 mm packages.

    Key Features

    • Dual MOSFET driver for synchronous rectified converters
    • High driving current for fast external MOSFET switching
    • Integrated bootstrap diode
    • High frequency operation
    • Enable pin
    • Adaptive dead-time management
    • Flexible gate-drive: 5 V to 12 V compatible
    • High-impedance (HiZ) management for output stage shutdown
    • Preliminary OV protection
    • VFDFPN8 3 x 3 mm package

Circuit Diagram

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Part Number
Package
Packing Type
Temperature (°C) Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
More info
Order from Distributors
Order from ST
min
max
L6743BTR VDFPN 8 3x3x1.0 Tape And Reel 0 125
Active
0.5736 1000 EAR99
MORE INFO

Country of Origin:

PHILIPPINES

Check Availability

Distributor availability ofL6743BTR

Distributor Name
Region Stock Min. Order Third party link
AVNET AMERICA 4000 0 Order Now
ARROW AMERICA 64240 4000 Order Now

Distributor reported inventory date: 2019-09-18

Distributor Name

AVNET

Stock

4000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

64240

Min.Order

4000

Region

AMERICA Order Now

Distributor reported inventory date: 2019-09-18

Buy now

L6743BTR

Package

VDFPN 8 3x3x1.0

Packing Type

Tape And Reel

Unit Price (US$)

0.5736*

Distributor availability ofL6743BTR

Distributor Name
Region Stock Min. Order Third party link
AVNET AMERICA 4000 0 Order Now
ARROW AMERICA 64240 4000 Order Now

Distributor reported inventory date: 2019-09-18

Distributor Name

AVNET

Stock

4000

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

64240

Min.Order

4000

Region

AMERICA Order Now

Distributor reported inventory date: 2019-09-18

Operating Temperature (°C)

(min)

0

(max)

125

Marketing Status

Active

Unit Price (US$)

0.5736

Quantity

1000

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

(*) 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

Recommended for you

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS5863
      High current MOSFET driver
      2.0
      432.06 KB
      PDF
      DB0572
      High current MOSFET driver
      1.2
      120.06 KB
      PDF
      DS5863

      High current MOSFET driver

      DB0572

      High current MOSFET driver

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L6743BTR
Active
VDFPN 8 3x3x1.0 Industrial Ecopack2 (**)

L6743BTR

Package:

VDFPN 8 3x3x1.0

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VDFPN 8 3x3x1.0

Grade

Industrial

RoHS Compliance Grade

Ecopack2 (**)

(**) 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.