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
产品规格
DescriptionVersionSize
DB0413: High current MOSFET driver1.1168 KB
DS5429: High current MOSFET driver2.1344 KB
手册
DescriptionVersionSize
Brochure Power management guide05.20167 MB
样片和购买
型号PackagePacking TypeOperating Temperature (°C) (min)Operating Temperature (°C) (max)Unit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
L6743QTRVDFPN 10 3x3x1.0Tape And Reel0125--NECEAR99PHILIPPINES
质量和可靠性
型号PackageGradeRoHS Compliance GradeMaterial Declaration**
L6743QTRVDFPN 10 3x3x1.0IndustrialEcopack2md_wq_vdfpn3x3x1_sup31ba5.pdf
md-wspc-_wq_vdfpn3x3x1.xml
High current MOSFET driver L6743Q
circuit_diagram_13827_thumbnail.png L6743Q
High current MOSFET driver L6743Q
DB0413: High current MOSFET driver L6743Q
Very low drop voltage regulators with inhibit KFXX
md_wq_vdfpn3x3x1_sup31ba5.pdf L6743Q
md-wspc-_wq_vdfpn3x3x1.xml L6743Q