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L6747C Datasheet(PDF) 4 Page - STMicroelectronics

Part # L6747C
Description  High current MOSFET driver
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6747C Datasheet(HTML) 4 Page - STMicroelectronics

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Pin information and thermal data
L6747C
4/15
Doc ID 17127 Rev 1
2
Pin information and thermal data
2.1
Pin information
Figure 3.
Pin connection diagram (top view)
Table 2.
Pin descriptions
Pin #
Name
Function
1BOOT
High-side driver supply.
This pin supplies the high-side floating driver. Connect through a RBOOT -
CBOOT (2.2Ω - 220nF typ.) network to the PHASE pin.
See Section 4.3 for guidance in designing the capacitor value.
2PWM
Control input for the driver; 5V compatible, internally clamp to 3.3V.
This pin controls the state of the driver and which external MOSFET must be
turned ON according to EN status.
If manages the high-impedance (HiZ) state which sets all the MOSFETs to
OFF if externally set in the HiZ window (See Table 5).
See Section 4.1 for details of HiZ.
3EN
Enable input for the driver; 5V compatible, internally clamp to 3.3V.
Pull high to enable the driver based on the PWM status.
Pull low to enter HiZ state with all MOSFET OFF, regardless of the PWM
status.
See Section 4.1 for details of HiZ.
4VCC
Device and LS driver power supply.
Connect to any voltage between 5V and 12V.
Bypass with low-ESR MLCC capacitor to GND (1
μF typ).
5LGATE
Low-side driver output.
Connect directly to the low-side MOSFET gate. A small series resistor may be
used to reduce dissipated power especially in high frequency applications.
6GND
All internal references, logic and drivers are referenced to this pin. Connect to
the PCB ground plane.
7
PHASE
High-side driver return path. Connect to the high-side MOSFET source.
This pin is also monitored for adaptive dead-time management and pre-OV
protection.
Internal clamp circuitry prevent leakage from this pin in disable conditions.
1
2
3
4
LGATE
GND
PHASE
UGATE
VCC
EN
PWM
BOOT
5
6
7
8


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