L6743Q：High current MOSFET driver
L6743, L6743Q is a flexible, high-frequency dualdriver 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. L6743, L6743Q embeds high-current drivers for both high-side and low-side MOSFETS. The device accepts flexible power supply (5V to 12V) 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.
L6743, L6743Q 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 in SO8 and DFN10 3x3 packages
Key Features
- SO-8 and DFN10 3x3 packages
- Preliminary OV protection
- Flexible gate-drive: 5V to 12V 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 |
|---|---|---|
| DB0413: High current MOSFET driver | 1.1 | 168 KB |
| DS5429: High current MOSFET driver | 2.1 | 344 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 |
|---|---|---|---|---|---|---|---|---|---|
| L6743QTR | VDFPN 10 3x3x1.0 | Tape And Reel | 0 | 125 | - | - | NEC | EAR99 | PHILIPPINES |
Quality & Reliability
| Part Number | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|
| L6743QTR | VDFPN 10 3x3x1.0 | Industrial | Ecopack2 | md_wq_vdfpn3x3x1_sup31ba5.pdf md-wspc-_wq_vdfpn3x3x1.xml |
- High current MOSFET driver L6743Q
