 2003 Microchip Technology Inc.

DS21416C-page 1

M

TC429

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

• Short Delay Time: 75 nsec max

• Available in the Space-Saving 8-Pin SOIC

Package.

• High Capacitive Load Drive Capability:

Applications

• Switch-Mode Power Supplies

• CCD Drivers

• Pulse Transformer Drive

• Class D Switching Amplifiers

Package Types

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

Ω 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

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.

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

latch-up

protection,

see

the

TC4420/TC4429

(DS21419) data sheet.

CERDIP/PDIP/SOIC

1

2

3

4

5

6

7

8

OUTPUT

GND

INPUT

NC

GND

OUTPUT

TC429

NC = No Internal Connection

Note: Duplicate pins must both be connected for

proper operation.

6A Single High-Speed, CMOS Power MOSFET Driver