L6743BTR Active

Operating Temp Min Celsius0.0
Operating Temp Max Celsius125.0
ECCN USEAR99
ECCN EUNEC
Packing TypeTape And Reel
ROHS Compliance GradeEcopack2 (**)
GradeIndustrial
Package NameVDFPN 8 3x3x1.0
Key Features
  • VFDFPN8 3x3 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

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 DCDC conversion in general. L6743B 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.


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 3x3 mm packages.

In stock:
$1.47
Range Unit Price Savings
1 - 9$1.470%
10 - 99$1.2515%
100 - 499$0.9635%
500$0.8542%
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