TC429 Datasheet, PDF (1/14 Pages) TelCom Semiconductor, Inc – 6A SINGLE HIGH-SPEED, CMOS POWER MOSFET DRIVER

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TC429
6A Single High-Speed, CMOS Power MOSFET Driver
Features
• 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
• 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
Package Type
8-Pin PDIP/CERDIP
V_DD 1
INPUT 2
NC 3
GND 4
TC429
8 V_DD
7 OUTPUT
6 OUTPUT
5 GND
NC = No internal connection
NOTE: Duplicate pins must both be connected for proper operation.
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.
Typical Application
1,8
V_DD
300mV
6,7
Output
2
Input
GND
4,5
Effective
Input
C = 38pF
TC429
 2002 Microchip Technology Inc.
DS21416B-page 1