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MCP14E4TEP Datasheet(PDF) 11 Page - Microchip Technology

Part # MCP14E4TEP
Description  4.0A Dual High-Speed Power MOSFET Drivers With Enable
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP14E4TEP Datasheet(HTML) 11 Page - Microchip Technology

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© 2008 Microchip Technology Inc.
DS22062B-page 11
MCP14E3/MCP14E4/MCP14E5
3.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
3.1
Control Inputs A and B
The MOSFET driver inputs are a high-impedance TTL/
CMOS compatible input. The inputs also have hystere-
sis between the high and low input levels, allowing
them to be driven from slow rising and falling signals
and to provide noise immunity.
3.2
Outputs A and B
Outputs A and B are CMOS push-pull outputs that are
capable of sourcing and sinking 4.0A of peak current
(VDD = 18V). The low output impedance ensures the
gate of the MOSFET will stay in the intended state even
during large transients. These outputs also have a
reverse latch-up rating of 1.5A.
3.3
Supply Input (VDD)
VDD is the bias supply input for the MOSFET driver and
has a voltage range of 4.5V to 18V. This input must be
decoupled to ground with a local ceramic capacitor.
This bypass capacitor provides a localized low-imped-
ance path for the peak currents that are to be provided
to the load.
3.4
Ground (GND)
Ground is the device return pin. The ground pin(s)
should have a low impedance connection to the bias
supply source return. High peak currents will flow out
the ground pin(s) when the capacitive load is being
discharged.
3.5
Enable A (ENB_A)
The ENB_A pin is the enable control for Output A. This
enable pin is internally pulled up to VDD for active high
operation and can be left floating for standard
operation. When the ENB_A pin is pulled below the
enable pin Low Level Input Voltage (VEN_L), Output A
will be in the off state regardless of the input pin state.
3.6
Enable B (ENB_B)
The ENB_B pin is the enable control for Output B. This
enable pin is internally pulled up to VDD for active high
operation and can be left floating for standard
operation. When the ENB_B pin is pulled below the
enable pin Low-Level Input Voltage (VEN_L), Output B
will be in the off state regardless of the input pin state.
3.7
DFN Exposed Pad
The exposed metal pad of the DFN package is not
internally connected to any potential. Therefore, this
pad can be connected to a ground plane or other
copper plane on a printed circuit board to aid in heat
removal from the package.
TABLE 3-1:
PIN FUNCTION TABLE
8-Pin
PDIP, SOIC
8-Pin
6x5 DFN
Symbol
Description
1
1
ENB_A
Output A Enable
2
2
IN A
Input A
3
3
GND
Ground
4
4
IN B
Input B
5
5
OUT B
Output B
66
VDD
Supply Input
7
7
OUT A
Output A
8
8
ENB_B
Output B Enable
PAD
NC
Exposed Metal Pad
Note:
Duplicate pins must be connected for proper operation.


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