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TC429
6A Single High-Speed, CMOS Power MOSFET Driver
Features
? High Peak Output Current: 6A
? Wide Input Supply Voltage Operating Range:
- 7V to 18V
? High-Impedance CMOS Logic Input
? Logic Input Threshold Independent of Supply
Voltage
? Low Supply Current:
- With Logic ‘ 1 ’ Input – 5 mA max.
- With Logic ‘ 0 ’ Input – 0.5 mA max.
? Output Voltage Swing Within 25 mV of Ground
or V DD
? Short Delay Time: 75 nsec max
? Available in the Space-Saving 8-Pin SOIC
Package.
? High Capacitive Load Drive Capability:
- t RISE , t FALL = 35 nsec max with
C LOAD = 2500 pF
Applications
General Description
The TC429 is a high-speed, single output, CMOS-level
translator and driver. Designed specifically to drive
highly capacitive power MOSFET gates, the TC429
features a 2.5 ? output impedance and 6A peak output
current drive.
A 2500 pF capacitive load will be driven to 18V in
25 nsec. The rapid switching times with large
capacitive loads minimize MOSFET switching power
losses.
A TTL/CMOS input logic level is translated into an
output voltage swing that equals the supply voltage and
will swing to within 25 mV of ground or V DD . Input volt-
age swing may equal the supply voltage. Logic input
current is under 10 μA, making direct interface to
CMOS/bipolar switch-mode power supply controllers
easy. Input “speed-up” capacitors are not required.
The CMOS design minimizes quiescent power supply
current. With a logic ‘ 1 ’ input, power supply current is
5 mA maximum and decreases to 0.5 mA for logic ‘ 0 ’
inputs.
?
?
?
?
Switch-Mode Power Supplies
CCD Drivers
Pulse Transformer Drive
Class D Switching Amplifiers
For dual output MOSFET drivers, see the TC426/
TC427/TC428 (DS21415), TC4426/TC4427/TC4428
(DS21422) and TC4426A/TC4427A/TC4428A
(DS21423) data sheets.
For non-inverting applications, or applications requiring
Package Types
CERDIP/PDIP/SOIC
latch-up protection, see the TC4420/TC4429
(DS21419) data sheet.
V DD
INPUT
NC
1
2
3
8
7
6
V DD
OUTPUT
OUTPUT
GND
4
TC429
5
GND
NC = No Internal Connection
Note: Duplicate pins must both be connected for
proper operation.
? 2003 Microchip Technology Inc.
DS21416C-page 1
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