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Features
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TC429
General Description
The TC429 is a high-speed, single CMOS-level
translator and driver. Designed specifically to drive
highly capacitive 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.
The rapid switching times with large capacitive loads
minimize MOSFET transition 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,
TC4426/TC4427/TC4428 and TC4426A/TC4427A/
TC4428A data sheets.
For noninverting applications, or applications requiring
latch-up protection, see the TC4420/TC4429 data
sheet.
6A Single High-Speed, CMOS Power MOSFET Driver
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 25mV 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
Applications
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Switch-Mode Power Supplies
CCD Drivers
Pulse Transformer Drive
Class D Switching Amplifiers
Device Selection Table
Part Number
TC429CPA
TC429EPA
TC429MJA
Package
8-Pin PDIP
8-Pin PDIP
8-Pin CERDIP
Temp. Range
0°C to +70°C
-40°C to +85°C
-55°C to +125°C
Typical Application
1,8
V
DD
Package Type
8-Pin PDIP/CERDIP
V
DD
INPUT
NC
GND
1
2
3
4
8
7
6
V
DD
OUTPUT
GND
Input
2
300mV
6,7
Output
TC429
4,5
Effective
Input
C = 38pF
OUTPUT
GND
TC429
5
NC = No internal connection
NOTE:
Duplicate pins must both be connected for proper operation.
2002 Microchip Technology Inc.
DS21416B-page 1
MICROCHIP [ MICROCHIP TECHNOLOGY ]
