 2002 Microchip Technology Inc.

DS21416B-page 1

M

TC429

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

• Short Delay Time: 75nsec Max

• High Capacitive Load Drive Capability

Applications

• Switch-Mode Power Supplies

• CCD Drivers

• Pulse Transformer Drive

• Class D Switching Amplifiers

Device Selection Table

Package Type

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 2.5

Ω 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 may equal the supply. 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

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

Part Number

Package

Temp. Range

TC429CPA

8-Pin PDIP

0°C to +70°C

TC429EPA

8-Pin PDIP

-40°C to +85°C

TC429MJA

8-Pin CERDIP

-55°C to +125°C

NC = No internal connection

NOTE: Duplicate pins must both be connected for proper operation.

18

27

36

45

TC429

GND

GND

NC

INPUT

OUTPUT

OUTPUT

8-Pin PDIP/CERDIP

Output

Input

GND

Effective

Input

C = 38pF

300mV

2

4,5

1,8

6,7

TC429

6A Single High-Speed, CMOS Power MOSFET Driver