2007-2014 Microchip Technology Inc. DS20002052D-page 9
MCP1401/02
3.0 PIN DESCRIPTIONS
The description of the pins are listed in Table 3-1.
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 a local capacitor. This bypass
capacitor provides a localized low-impedance path for
the peak currents that are to be provided to the load.
3.2 Control Input (IN)
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 Output (OUT, OUT)
The output is a CMOS push-pull output that is capable
of sourcing and sinking 0.5A of peak current
(V
DD
= 18V). The low output impedance ensures the
gate of the external MOSFET will stay in the intended
state even during large transients. This output also has
a reverse current latch-up rating of 0.5A.
TABLE 3-1: PIN FUNCTION TABLE
(1)
Pin No. MCP1401 MCP1402 Description
1GNDGNDGround
2V
DD
V
DD
Supply Input
3 IN IN Control Input
4GNDGNDGround
5OUTOUT Output
Note 1: Duplicate pins must be connected for proper operation.
