L6743B STMicroelectronics, L6743B Datasheet - Page 4
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L6743B
Manufacturer Part Number
L6743B
Description
MOSFET & Power Driver ICs Hi-current MOSFET Driver
Manufacturer
STMicroelectronics
Type
High Current Mosfet Driverr
Datasheet
1.L6743B.pdf
(16 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
L6743BTR
Manufacturer:
st
Quantity:
26 200
Pins description and connection diagrams
2
2.1
4/16
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