TC4452 Microchip Technology, TC4452 Datasheet - Page 9

• Manufacturer Part Number: TC4452
• Description: 12A High-Speed MOSFET Drivers
• Manufacturer: Microchip Technology

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3.0
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
3.1
The V
and is rated for 4.5V to 18V with respect to the ground
pin. The V
a local ceramic capacitor. The value of the capacitor
should be chosen based on the capacitive load that is
being driven. A minimum value of 1.0 μF is suggested.
3.2
The MOSFET driver input is a high-impedance,
TTL/CMOS-compatible input. The input also has
300 mV of hysteresis between the high and low
thresholds that prevents output glitching even when the
rise and fall time of the input signal is very slow.
3.3
The MOSFET driver output is a low-impedance,
CMOS, push-pull style output capable of driving a
capacitive load with 12A peak currents. The MOSFET
driver output is capable of withstanding 1.5A peak
reverse currents of either polarity.
© 2006 Microchip Technology Inc.
8-Pin PDIP,
Pin No.
DD
SOIC
—
—
1
2
3
4
5
6
7
8
PIN DESCRIPTIONS
Supply Input (V
input is the bias supply for the MOSFET driver
Control Input
CMOS Push-Pull Output
DD
input should be bypassed to ground with
PIN FUNCTION TABLE
8-Pin DFN
Pin No.
PAD
—
1
2
3
4
5
6
7
8
DD
)
5-Pin TO-220
Pin No.
TAB
—
—
—
—
1
2
4
5
3
OUTPUT
OUTPUT
Symbol
INPUT
GND
GND
V
V
V
NC
NC
DD
DD
DD
3.4
The ground pins are the return path for the bias current
and for the high peak currents that discharge the load
capacitor. The ground pins should be tied into a ground
plane or have very short traces to the bias supply
source return.
3.5
The exposed metal pad of the 6x5 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 (PCB) to aid in
heat removal from the package.
3.6
The metal tab of the TO-220 package is connected to
the V
can be used as a current carrying path for the device.
Supply input, 4.5V to 18V
Control input, TTL/CMOS-compatible input
No connection
Ground
Ground
CMOS push-pull output
CMOS push-pull output
Supply input, 4.5V to 18V
Exposed metal pad
Metal tab is at the V
DD
potential of the device. This connection to V
Ground
Exposed Metal Pad
Metal Tab
TC4451/TC4452
Description
DD
potential
DS21987A-page 9
DD