L6743B STMicroelectronics, L6743B Datasheet - Page 4

• Manufacturer Part Number: L6743B
• Description: MOSFET & Power Driver ICs Hi-current MOSFET Driver
• Manufacturer: STMicroelectronics
• Type: High Current Mosfet Driverr

Specifications of L6743B

• Product: Driver ICs - Various
• Propagation Delay Time: 75 ns
• Supply Voltage (max): 12 V
• Supply Voltage (min): 5 V
• Supply Current: 5 mA
• Maximum Power Dissipation: 2.25 W
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: SO-8
• Minimum Operating Temperature: 0 C
• Number Of Drivers: 2
• Number Of Outputs: 2
• Output Voltage: 10 V
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Pins description and connection diagrams
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Pins description and connection diagrams
Pin description
Table 1.
Figure 3.
Pin #
1
2
3
4
5
6
7
8
-
TH. PAD
PHASE
UGATE
LGATE
BOOT
Name
PWM
GND
VCC
Pin description
EN
Pins connection (top view)
High-side driver supply.
This pin supplies the high-side floating driver. Connect through a
R
Internally connected to the cathode of the integrated bootstrap diode. See
Section 5.3
Control input for the driver, 5 V compatible.
This pin controls the state of the driver and which external MOSFET have to
be turned-ON according to EN status. If left floating and in conjunction with EN
asserted, it causes the driver to enter the high-impedance (HiZ) state which
causes all MOSFETs to be OFF. See
Enable input for the driver. Internally pulled low by 15 kΩ.
Pull high to enable the driver according to the PWM status. If pulled low will
cause the drive to enter HiZ state with all MOSFET OFF regardless of the
PWM status.
See
Device and LS driver power supply. Connect to any voltage between 5 V and
12 V. Bypass with low-ESR MLCC capacitor to GND.
Low-side driver output.
Connect directly to the low-side MOSFET gate. A small series resistor can be
useful to reduce dissipated power especially in high frequency applications.
All internal references, logic and drivers are referenced to this pin. Connect to
the PCB ground plane.
high-side driver return path. Connect to the high-side MOSFET source.
This pin is also monitored for the adaptive dead-time management and pre-
OV protection.
high-side driver output.
Connect to high-side MOSFET gate.
Thermal pad connects the silicon substrate and makes good thermal contact
with the PCB. Connect to the PGND plane.
BOOT
Section 5.1
- C
BOOT
for guidance in designing the capacitor value.
capacitor to the PHASE pin.
for details about HiZ.
Function
Section 5.1
for details about HiZ.
L6743B