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MCP1401/02
3.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1 .
TABLE 3-1:
PIN FUNCTION TABLE (1)
SOT-23-5
1
2
3
4
5
Symbol
GND
V DD
IN
GND
OUT
Ground
Supply Input
Control Input
Ground
Output
Description
Note 1:
Duplicate pins must be connected for proper operation.
3.1
Supply Input (V DD )
3.3
Ground (GND)
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.
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.
3.2
Control Input (IN)
3.4
Output (OUT)
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.
? 2007 Microchip Technology Inc.
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.
DS22052B-page 9
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