Datasheet
MCP1406/07
DS22019B-page 10 2006-2012 Microchip Technology Inc.
3.0 PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1: PIN FUNCTION TABLE
(1)
3.1 Supply Input (V
DD
)
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.
3.2 Control Input (INPUT)
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.
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.
3.5 Exposed Metal 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 cop-
per plane on a printed circuit board to aid in heat
removal from the package.
3.6 TO-220 Metal Tab
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.
8-Pin
PDIP, SOIC
8-Pin
DFN
5-Pin
TO-220
Symbol Description
11—V
DD
Supply Input
2 2 1 INPUT Control Input
3 3 — NC No Connection
4 4 2 GND Ground
5 5 4 GND Ground
6 6 5 OUTPUT CMOS Push-Pull Output
7 7 — OUTPUT CMOS Push-Pull Output
883 V
DD
Supply Input
—PAD— NC
Exposed Metal Pad
——TABV
DD
Metal Tab at V
DD
Potential
Note 1: Duplicate pins must be connected for proper operation.