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MCP1406/07
3.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1 .
TABLE 3-1:
PIN FUNCTION TABLE (1)
8-Pin
PDIP, SOIC
1
2
3
4
5
6
7
8
—
—
8-Pin
DFN
1
2
3
4
5
6
7
8
PAD
—
5-Pin
TO-220
—
1
—
2
4
5
—
3
—
TAB
Symbol
V DD
INPUT
NC
GND
GND
OUTPUT
OUTPUT
V DD
NC
V DD
Description
Supply Input
Control Input
No Connection
Ground
Ground
CMOS Push-Pull Output
CMOS Push-Pull Output
Supply Input
Exposed Metal Pad
Metal Tab at V DD Potential
Note 1:
Duplicate pins must be connected for proper operation.
3.1
Supply Input (V DD )
3.5
Exposed Metal Pad
V DD 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 local capacitors. The bypass
capacitors provide a localized low-impedance path for
the peak currents that are to be provided to the load.
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 cop-
per plane on a printed circuit board to aid in heat
removal from the package.
3.2
Control Input (INPUT)
3.6
TO-220 Metal Tab
The MOSFET driver input is a high-impedance, TTL/
CMOS-compatible input. The input also has hysteresis
between the high and low input levels, allowing them to
be driven from slow rising and falling signals, and to
provide noise immunity.
The metal tab on the TO-220 package is at V DD poten-
tial. This metal tab is not intended to be the V DD con-
nection to MCP1406/07. V DD should be supplied using
the Supply Input pin of the TO-220.
3.3
Ground (GND)
Ground is the device return pin. The ground pin should
have a low impedance connection to the bias supply
source return. High peak currents will flow out the
ground pin when the capacitive load is being
discharged.
3.4
CMOS Push-Pull Output
(OUTPUT)
The output is a CMOS push-pull output that is capable
of sourcing peak currents of 6A (V DD = 18V). The low
output impedance ensures the gate of the external
MOSFET will stay in the intended state even during
large transients. The output pins also have reverse
current latch-up ratings of 1.5A.
DS22019B-page 10
? 2006-2012 Microchip Technology Inc.
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