Microchip Technology TC1427COA, TC1426CPA, TC1426COA, TC1428CPA, TC1428COA Datasheet

M

A

6COA

3

, 4

5

COA

2

3

5

6

8

5

8COA

C

2

1.2A Dual High-Sp eed MOSFET Drivers

TC1426/TC1427/TC1428

Features

•Low Cost

• Latch-Up Protected: Will Withstand 500mA
Reverse Output Current

• ESD Protected ±2kV

• High Peak Output Current: 1.2A

• Wide Operating Range

- 4.5V to 16V

• High Capacitive Load Drive Capability: 1000pF in
38nsec

• Low Delay Time: 75nsec Max

• Logic Input Threshold Independent of Supply
Voltage

• Output Voltage Swing to Within 25mV of Ground
or V

DD

• Low Output Impedance: 8Ω

Applications

• Power MOSFET Drivers

• Switched Mode Power Supplies

• Pulse Transformer Drive

• Small Motor Controls

• Print Head Drive

Device Selection Table

Part Number Package Temp. Range

TC1426COA 8-Pin SOIC 0°C to +70°C

TC1426CPA 8-Pin PDIP 0°C to +70°C

TC1427COA 8-Pin SOIC 0°C to +70°C

TC1427CPA 8-Pin PDIP 0°C to +70°C

TC1428COA 8-Pin SOIC 0°C to +70°C

TC1428CPA 8-Pin PDIP 0°C to +70°C

Package Type

8-Pin PDIP/SOIC

NC

1

IN A

2

TC1426CPA

GND

3

IN B

4

2, 4 7, 5

Inverting

NC

IN A

TC142

GND

IN B

2

Inverting

NC = No connection

7,

NC

78OUT A

6

V

DD

5

OUT B

NC

78OUT A

V

6

DD

5

OUT B

NC

IN A

GND

IN B

NC

IN A

GND

IN B

1

2

TC1427CPA

3

4

2, 4 7, 5

Noninverting

TC1427

2, 47,

Noninverting

NC

78OUT A

6

V

DD

5

OUT B

NC

OUT A

V

DD

OUT B

NC

IN A

GND

IN B

N

1

2

TC1428CPA

3

4

27

45

TC142

45

7

NC

78OUT

6

V

DD

OUT B

5

NC

78OUT A

V

6

DD

5

OUT B

General Description

The TC1426/TC1427/ TC1428 are a fa mily of 1.2 A dual
high-speed drivers. CMOS fabrication is used for low
power consumption and high efficienc y.

These devices are fa bricated using a n epit axial lay er to
effectively short out the intrinsic parasitic transistor
responsible for CMOS latch-up. They incorporate a
number of other design and process refinements to
increase their long-term reliability.

The TC1426 is compat ible with the bipolar DS0026, but
only draws 1/5 of the quiescent current. The TC1426/
TC1427/TC1428 are also compatible with the TC426/
TC427/TC428, but wit h 1.2A peak out put current rath er
than the 1.5A of the TC426/TC427/TC428 devic es .

Other compatible drivers are the TC4426/TC4427/
TC4428 and the TC4426A/TC4427A/TC4428A. The
TC4426/TC4427/TC4428 have the added feature that
the inputs c an with sta nd negat ive v olt age u p to 5 V wi th
diode protection circuits. The TC4426A/TC4427A/
TC4428A have matched input to output leading edge
and falling edge delays, t
short duration puls es in the 25 nanoseconds rang e. Al l
of the above drivers are pin compatible.

The high-input impedance TC1426/TC1427/TC1428
drivers are CM OS/TTL input-co mpatible , do not require
the speed-up needed by the bipolar devices, and can
be directly driven by most PWM ICs.

This family of devic es i s av ai la ble in inverting and non­inverting versions. Specifications have been optimized
to achieve low-cost and high-performance devices,
well-suited for the high-volume manufacturer.

and tD2, for processing

D1

 2002 Microchip Technology Inc. DS21393B-page 1

TC1426/TC1427/TC1428

GND

Functional Block Diagram

+

V

≈500µA

≈2.5mA

Input

NOTE: TC1428 has one inverting and one noninverting driver.

Ground any unused driver input.

TC1426 Inverting

TC1427 Noninverting

TC1428 Inverting/Noninverting

Noninverting

Output

Inverting

Output

(TC1426)(TC1427)

DS21393B-page 2  2002 Microchip Technology Inc.

TC1426/TC1427/TC1428

1.0 ELECTRICAL
CHARACTERISTICS

Absolute Maximum Ratings*

Supply Voltage.....................................................+18V

*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, Any Terminal

................................... V

Power Dissipation (T

≤ 70°C)

A

+ 0.3V to GND – 0.3V

DD

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

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

Derating Factor

PDIP........................................................8mW/

SOIC........................................................4mW/

°C
°C

Operating Temperature Range

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

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

TC1426/TC1427/TC1428 ELECTRICAL SPECIFICATIONS

Electrical Characteristics: TA = +25°C, 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

Switching Ti me (Note 1)
t

R

t

F

t

D1

t

D2

Power Supply

I

S

Note 1: Switching times ensured by design.

Logic 1, High Input Voltage 3 —— V
Logic 0, Low Input Voltage ——0.8 V
Input Current -1 — 1 µA0V ≤ V

High Output Voltage VDD – 0.025 —— V Figure 3-1, Figure 3-2
Low Output Voltage ——0.025 V Figure 3-1, Figure 3-2
Output Resistance —

Peak Output Current — 1.2 — A
Latch-Up Current

Withstand Reverse Current

Rise Time ——35 nsec Figure 3-1, Figure 3-2
Fall Time ——25 nsec Figure 3-1, Figure 3-2
Delay Time ——75 nsec Figure 3-1, Figure 3-2
Delay Time ——75 nsec Figure 3-1, Figure 3-2

Power Supply Current —

≤ 16V, unless otherwise noted.

DD

—

— >500 — mA

—

12

8

—
—

18
12

0.5

Ω I

9

mA VIN = 3V (Both Inputs)

≤ V

IN

DD

= 10mA, VDD = 16V

OUT

V

= 0V (Both Inputs)

IN

 2002 Microchip Technology Inc. DS21393B-page 3

TC1426/TC1427/TC1428

TC1426/TC1427/TC1428 ELECTRICAL SPECIFICATIONS (CONTINUED)

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

Logic 1, High Input Voltage 3 —— V
Logic 0, Low Input Voltage ——0.8 V
Input Curre n t -10 — 10 µA0V ≤ V

Output

V
V
R

I

REV

OH
OL
O

High Output Voltage VDD – 0.025 —— V Figure 3-1, Figure 3-2
Low Output Voltage ——0. 025 V Figure 3-1 , Figure 3-2
Output Resistance —

Latch-Up Current

—
— >500 — mA

15
10

Withstand Reverse Current
Switching Time (Note 1)
t

R

t

F

t

D1

t

D2

Rise Time ——60 nsec Figure 3-1, Figure 3-2

Fall Time ——40 nsec Figure 3-1, Figure 3-2

Delay Time ——125 nsec Figure 3-1, Figure 3-2

Delay Time ——125 nsec Figure 3-1, Figure 3-2

Power Supply

I

S

Note 1: Switching times ensured by design.

Power Supply Current —

—

—
—

≤ 16V, unless otherwise noted.

DD

23

Ω I

= 10mA, VDD = 16V

OUT

18

13

0.7

mA VIN = 3V (Both Inputs)

= 0V (Both Inputs)

V

IN

≤ V

IN

DD

DS21393B-page 4  2002 Microchip Technology Inc.

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)

1 NC No connec tion.

2 IN A Control input A, TTL/CMOS compatible logic input.

3 GND Ground.

4 IN B Control input B, TTL/CMOS compatible logic input.

5 OUT B Output B, CMOS totem-pole output.

6V

7 OUT A Output A, CMOS totem-pole output.

8 NC No connec tion.

Symbol Description

DD

Supply input, 4.5V to 16V.

TC1426/TC1427/TC1428

 2002 Microchip Technology Inc. DS21393B-page 5