L6743D：High current MOSFET driver
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
Product Specifications
| Description | Version | Size |
|---|---|---|
| DS6010: High current MOSFET driver | 1.1 | 417 KB |
Brochures
| Description | Version | Size |
|---|---|---|
| Brochure Power management guide | 05.2016 | 4 MB |
Sample & Buy
| Part Number | Package | Packing Type | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | Unit Price (US$) * | Quantity | ECCN (EU) | ECCN (US) | Country of Origin |
|---|---|---|---|---|---|---|---|---|---|
| L6743DTR | SO-8 | Tape And Reel | 0 | 125 | - | - | NEC | EAR99 | MOROCCO |
| L6743D | SO-8 | Tube | 0 | 125 | - | - | NEC | EAR99 | - |
Quality & Reliability
| Part Number | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|
| L6743DTR | SO-8 | Industrial | Ecopack1 | md_o7-wspc-so-wspc-08-wspc-.15-wspc-jedec_b5o7-wspc-up31ba5.pdf md_o7-wspc-so-wspc-08-wspc-.15-wspc-jedec_b5o7-wspc-up31ba5.xml |
| L6743D | SO-8 | Industrial | Ecopack1 | md_o7-wspc-so-wspc-08-wspc-.15-wspc-jedec_b5o7-wspc-up31ba5.pdf md_o7-wspc-so-wspc-08-wspc-.15-wspc-jedec_b5o7-wspc-up31ba5.xml |
- High current MOSFET driver L6743D
