Microchip Technology TC4427AEOA, TC4427ACPA, TC4427ACOA, TC4426ACPA, TC4426ACOA Datasheet

M

A

1.5A Dual High-Speed Power MOSFET Drivers

TC4426A/TC4427A/TC4428A

Features

• High Peak Output Current – 1.5A

• Wide Operating Range

- 4.5V to 18V

• High Capacitive Load Drive Capability – 1000pF
in 25nsec Typ.

• Short Delay Times – 30nsec Typ.

• Matched Rise, Fall and Delay Times

• Low Supply Current:

- With Logic "1" Input – 1mA

- With Logic "0" Input – 100µA

• Low Output Impedance – 7Ω

• Latch-Up Protected: Wi ll Withstand 0.5A Revers e
Current

• Input Will Withstand Negative Inputs Up to 5V

• ESD Protected – 4kV

• Pinouts Sa me as TC426/TC427/TC428

Applications

•

•

•

Device Selection Table

Part Number Package Temp. Range

TC4426ACOA 8-Pin SOIC 0°C to +70°C
TC4426ACPA 8- Pi n PDI P 0°C to +70°C
TC4426AEOA 8-Pin SOIC -40°C to +85°C

TC4426AEPA 8-Pin PDIP -40°C to +85°C

TC4426AMJA 8-Pin CERDIP -55°C to +125°C
TC4427ACOA 8-Pin SOIC 0°C to +70°C
TC4427ACPA 8- Pi n PDI P 0°C to +70°C
TC4427AEOA 8-Pin SOIC -40°C to +85°C

TC4427AEPA 8-Pin PDIP -40°C to +85°C

TC4427AMJA 8-Pin CERDIP -55°C to +125°C
TC4428ACOA 8-Pin SOIC 0°C to +70°C
TC4428ACPA 8- Pi n PDI P 0°C to +70°C
TC4428AEOA 8-Pin SOIC -40°C to +85°C

TC4428AEPA 8-Pin PDIP -40°C to +85°C

TC4428AMJA 8-Pin CERDIP -55°C to +125°C

Package Type

8-Pin PDIP/SOIC/CERDIP

1

NC

2

IN A

TC4426A

3

GND

4

IN B

2,4 7,5

Inverting

NC

1

2

IN A

TC4427A

3

GND

4

IN B

2,4 7,5

Noninverting

NC = No internal connection.
NOTE: SOIC pinout is identical to DIP.

8

7

6

5

8

7

6

5

NC

OUT A

V

DD

OUT B

NC

OUT A

V

DD

OUT B

NC

IN A

GND

IN B

1

2

TC4428A

3

4

2

4

Differential

NC

8

OUT

7

V

6

DD

5

OUT B

7

5

General Description

The TC4426A/TC4427A/TC4428A are improved
versions of the earlier TC426/TC427/TC428 family of
buffer/drivers (with which they are pin compatible).
They will not latch up under any conditions within their
power and voltage ratings. They are not subject to
damage when up to 5V of noise spiking (of either
polarity) occurs on the gro und pin. They c an accept,
without damage or logic upset, up to 500m A of revers e
current (of either polarity) being forced back into their
outputs. All terminals are fully protected against up to
4kV of electrostatic discharge.

As MOSFET drivers, the TC4426A/TC4427A/
TC4428A can easily switch 1000pF gate capacitances
in under 30nsec, and provide low enough impedances
in both the ON and OFF states to ensure the
MOSFET's intended state will not be affected, even by
large transients.

 2002 Microchip Technology Inc. DS21423B-page 1

TC4426A/TC4427A/TC4428A

Functional Block Diagram

Inverting

Outputs

2mA

300mV

Noninverting

Outputs

Input

4.7V

TC4426A/TC4427A/TC4428A

GND

Effective Input

C = 12pF

V

DD

Output

NOTES: 1. TC4426A has 2 inverting drivers; TC4427A has 2 noninverting drivers.

2. TC4428A has one inverting and one noninverting driver.

3. Ground any unused driver input.

DS21423B-page 2  2002 Microchip Technology Inc.

TC4426A/TC4427A/TC4428A

1.0 ELECTRICAL
CHARACTERISTICS

Absolute Maximum Ratings*

Supply Voltage.....................................................+22V

*Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to the device. These
are stress ratings only and functional operation of the device
at these or any other conditions above those indicated in the
operation sections of the specifications is not implied.
Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability.

Input Voltage, IN A or IN B

..................................(V

Package Power Dissipation (T

+ 0.3V) to (GND – 5V)

DD

≤ 70°C)

A

PDIP........................................................ 730mW

CERDIP................................................... 800mW

SOIC........................................................ 470mW

Package Thermal Resistance
CERDIP R
CERDIP R
PDIP R
PDIP R
SOIC R
SOIC R

........................................ 150°C/W

θJ-A

......................................... 50°C/W

θJ-C

............................................. 125°C/W

θJ-A

............................................... 42°C/W

θJ-C

............................................ 155°C/W

θJ-A

.............................................. 45°C/W

θJ-C

Operating Temperature Range

C Version.........................................0°C to +70°C

E Version..................................... -40°C to +85°C

M Version................................... -55°C to +125°C

Storage Temperature Range ............. -65°C to +150°C

TC4426A/TC4427A/TC4428A ELECTRICAL SPECIFICATIONS

Electrical Characteristics: Over operating temperature range with 4.5V ≤ V

Symbol Parameter Min Typ Max Units Test Conditions

Input

V

IH

V

IL

I

IN

Output

V

OH

V

OL

R

O

I

PK

I

REV

Note 1: Switching times ensured by design.

Logic 1, High Input Voltage 2.4 ——V
Logic 0, Low Input Voltage ——0.8 V
Input Current -1

High Output Voltage VDD – 0.025 ——VDC Test
Low Output Voltage ——0.025 V DC Test
Output Resistance —

Peak Output Current — 1.5 — AVDD = 18V
Latch-Up Protection

Withstand Reverse Current

-10

—
—

0.5 ——A Duty cycle ≤ 2%, t ≤ 300µsec

—
—

7
7
8

≤ 18V, unless otherwise noted.

DD

1

10

9
10
11

µA0V ≤ VIN ≤ V

Ω I

= 10mA, VDD = 18V, TA = +25°C

OUT

≤ TA ≤ +70°C

0°C

-40°C

= 18V

V

DD

DD

≤ TA ≤ +85°C

 2002 Microchip Technology Inc. DS21423B-page 3

TC4426A/TC4427A/TC4428A

Symbol Parameter Min Typ Max Units Test Conditions

Switching Time (Note 1)

t

R

t

F

t

D1

t

D2

Power Supply

I

S

Note 1: Switching times ensured by design.

Rise Time —

Fall Time —

Delay Time —

Delay Time —

Power Supply Current —

—
—

27
29

25

25

—
—

27
29

30

—
—

33
35

30

—
—

33
35

1.0

—

0.1

35
40
40

35
40
40

35
40
45

35
40
45

2.0

0.2

nsec T

nsec T

nsec T

nsec TA = +25°C

mA VIN = 3V (Both inputs)

= +25°C

A

≤ TA ≤ +70°C

0°C

≤ TA ≤ +85°C, Figure 3- 1

-40°C
= +25°C

A

≤ TA ≤ +70°C

0°C

≤ TA ≤ +85°C, Figure 3- 1

-40°C
= +25°C

A

≤ TA ≤ +70°C

0°C

≤ TA ≤ +85°C, Figure 3- 1

-40°C

≤ TA ≤ +70°C

0°C

≤ TA ≤ +85°C, Figure 3- 1

-40°C

= 0V (Both inputs), VDD = 18V

V

IN

DS21423B-page 4  2002 Microchip Technology Inc.

TC4426A/TC4427A/TC4428A

2.0 PIN DESCRIPTIONS

The descriptions of the pins are listed in Table 2-1.

TABLE 2-1: PIN FUNCTION TABLE

Pin No.

(8-Pin PDIP,

SOIC, CERDIP)

1 NC No connect.
2IN A
3 GND Ground.
4IN B
5OUT B
6V
7OUT A
8 NC No connect.

Symbol Description

DD

 2002 Microchip Technology Inc. DS21423B-page 5