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TC429
6A SINGLE HIGH-SPEED, CMOS POWER MOSFET DRIVER
FEATURES
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High Peak Output Current .................................. 6A
Wide Operating Range ............................. 7V to 18V
High-Impedance CMOS Logic Input
Logic Input Threshold Independent of
Supply Voltage
Low Supply Current
— With Logic 1 Input ................................ 5mA Max
— With Logic 0 Input ............................. 0.5mA Max
Output Voltage Swing Within 25 mV of Ground
or V
DD
Short Delay Time .................................. 75nsec Max
High Capacitive Load Drive Capability
— t
RISE
, t
FALL
= 35nsec Max With C
LOAD
= 2500pF
GENERAL DESCRIPTION
The TC429 is a high-speed, single CMOS-level transla-
tor and driver. Designed specifically to drive highly capaci-
tive power MOSFET gates, the TC429 features 2.5Ω output
impedance and 6A peak output current drive.
A 2500pF capacitive load will be driven 18V in 25nsec.
Delay time through the device is 60nsec. The rapid switching
times with large capacitive loads minimize MOSFET transi-
tion power loss.
A TTL/CMOS input logic level is translated into an
output voltage swing that equals the supply and will swing
to within 25mV of ground or V
DD
. Input voltage swing may
equal the supply. Logic input current is under 10µA, 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 5mA
maximum and decreases to 0.5mA for logic 0 inputs.
For dual devices, see the TC426/TC427/TC428
data sheet.
For noninverting applications, or applications requiring
latch-up protection, see the TC4420/TC4429 data sheet.
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APPLICATIONS
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Switch-Mode Power Supplies
CCD Drivers
Pulse Transformer Drive
Class D Switching Amplifiers
PIN CONFIGURATION
VDD
INPUT
NC
GND
1
2
3
4
TC429
8
7
6
5
VDD
OUTPUT
OUTPUT
GND
ORDERING INFORMATION
Part No.
TC429CPA
TC429EPA
TC429MJA
Package
8-Pin Plastic DIP
8-Pin Plastic DIP
8-Pin CerDIP
Temperature
Range
0°C to +70°C
– 40°C to +85°C
– 55°C to +125°C
NC = NO INTERNAL CONNECTION
NOTE: Duplicate pins must both be connected for proper operation.
TYPICAL APPLICATION
1,8
VDD
300mV
6,7
OUTPUT
INPUT
2
TC429
4,5
EFFECTIVE
INPUT
C = 38pF
TC429-4 10/11/96
GND
8
4-175
TELCOM SEMICONDUCTOR, INC.
TELCOM [ TELCOM SEMICONDUCTOR, INC ]
