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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
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Sample & Buy
| Part Number | Package | Packing Type | Temperature (°C) | Marketing Status | Budgetary Price (US$)* | Quantity | ECCN (US) | Country of Origin | More info | Order from Distributors | Order from ST | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||
| L6743DTR | SO-8 | Tape And Reel | 0 | 125 | NRND | - | EAR99 | - | Check Availability | Buy now | ||
| L6743D | SO-8 | Tube | 0 | 125 | NRND | - | - | EAR99 | - | No availability of distributors reported, please contact our sales office | ||
L6743D
Package
SO-8Packing Type
TubeUnit Price (US$)
*(*) 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
Featured Videos
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| L6743D | NRND | SO-8 | Industrial | Ecopack1 | |
| L6743DTR | NRND | SO-8 | Industrial | 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.
