Microchip Technology TC428EOA, TC428CPA, TC428COA, TC427MJA, TC427IJA Datasheet
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1.5A Dual High-Speed Power MOSFET Drivers
TC426/TC427/TC428
Features
• High-Speed Switching (CL = 1000pF): 30nsec
• High Peak Output Current: 1.5A
• High Output Voltage Swing
-V
-25mV
DD
- GND +25mV
• Low Input Current (Logic "0" or "1"): 1µA
• TTL/CMOS Input Compatible
• Available in Inverting and Noninverting
Configurations
• Wide Operating Supply Voltage
- 4.5V to 18V
• Current Consumption
- Inputs Low – 0.4mA
- Inputs High – 8mA
• Single Supply Operation
• Low Output Impedance: 6Ω
• Pinout Equivalent of DS0026 and MMH0026
• Latch-Up Resist ant: Withs tands > 500mA
Reverse Current
• ESD Protected: 2kV
Applications
• Switch Mode Power Supplies
• Pulse Transformer Drive
• Clock Line Driver
• Coax Cable Driver
Device Selection Table
Part
Number
TC426COA
TC426CPA
TC426EOA
TC426EPA
TC426IJA
TC426MJA
TC427COA
TC427CPA
TC427EOA
TC427EPA
TC427IJA
TC427MJA
TC428COA
TC428CPA
TC428EOA
TC428EPA
TC428IJA
TC428MJA
Package Configuration
8-Pin SOIC
8-Pin PDIP
8-Pin SOIC
8-Pin PDIP
8-Pin CERDIP
8-Pin CERDIP
8-Pin SOIC
8-Pin PDIP
8-Pin SOIC
8-Pin PDIP
8-Pin CERDIP
8-Pin CERDIP
8-Pin SOIC
8-Pin PDIP
8-Pin SOIC
8-Pin PDIP
8-Pin CERDIP
8-Pin CERDIP
Inverting
Inverting
Inverting
Inverting
Inverting
Inverting
Noninverting
Noninverting
Noninverting
Noninverting
Noninverting
Noninverting
Complementary
Complementary
Complementary
Complementary
Complementary
Complementary
Temp.
Range
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-25°C to +85°C
-55°C to +125°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-25°C to +85°C
-55°C to +125°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-25°C to +85°C
-55°C to +125°C
Package Type
8-Pin PDIP/SOIC/CERDIP
1
NC
2
IN A
3
GND
IN B
IN A
GND
IN B
IN A
GND
IN B
NC = No internal connection
NC
NC
TC426
4
1
2
3
TC427
4
1
2
TC428
3
4
NC
78OUT A
V
6
DD
5
OUT B
NC
78OUT A
6
V
DD
5
OUT B
NC
8
OUT A
7
6
V
DD
5
OUT B
2, 4 7, 5
Inverting
2, 4 7, 5
Noninverting
2 7
4 5
Complementary
General Description
The TC426/TC427/TC428 are dual CMOS high-speed
drivers. A TTL/CMOS input voltage level is translated
into a rail-to-rail ou tput v oltage level swin g. The CMOS
output is within 25mV of ground or positive supply.
The low impedance, high-current driver outputs swing
a 1000pF load 18V in 30nsec. The unique current and
voltage drive qualities make the TC426/TC427/TC428
ideal power MOSFET drivers, line drivers, and DC-toDC converter building blocks.
Input logic signa ls may equal the power su pply volt age.
Input current is a low 1µA, making direct interface
to CMOS/bipolar switch-mode power supply control
ICs possible, as well as open-collector analog
comparators.
Quiescent power suppl y current is 8mA maximum . The
TC426 requires 1/5 the current of the pin-compatible
bipolar DS0026 device. This is important in DC-to-DC
converter applicati ons with pow er effic iency constra ints
and high-frequency switch-mode power supply
applications. Quiescent current is typically 6mA when
driving a 1000pF load 18V at 100kHz.
The inverting TC426 driver is pin-compatible with the
bipolar DS0026 and MMH0026 devices. The TC427 is
noninverting; the TC428 contai ns an i nverting a nd noninverting driver.
Other pin compatible driver families are the TC1426/
TC1427/TC1428, TC4426/TC4427/TC4428 and
TC4426A/TC4427A/TC4428A.
2002 Microchip Technology Inc. DS21415B-page 1
TC426/TC427/TC428
Functional Block Diagram
+
V
≈500µA
≈2.5mA
TC426
TC427
TC428
Input
GND
NOTE: TC428 has one inverting and one noninverting driver.
Ground any unused driver input.
Noninverting
Output
Inverting
Output
(TC426)(TC427)
DS21415B-page 2 2002 Microchip Technology Inc.
TC426/TC427/TC428
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Supply Voltage.....................................................+20V
*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
CERDIP................................................... 800mW
SOIC........................................................ 470mW
Derating Factor
PDIP....................................................... 8mW/°C
CERDIP............................................... 6.4mW/°C
SOIC....................................................... 4mW/°C
Operating Temperature Range
C Version.........................................0°C to +70°C
I Version....................................... -25°C to +85°C
E Version..................................... -40°C to +85°C
M Version................................... -55°C to +125°C
Storage Temperature Range ............. -65°C to +150°C
TC426/TC427/TC428 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
OH
R
OL
I
PK
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 2.4 ——V
Logic 0, Low Input Voltage ——0.8 V
Input Current -1 — 1 µA0V ≤ V
High Output Voltage VDD – 0.025 —— V
Low Output Voltage ——0.025 V
High Output Resistance — 10 15 Ω I
Low Output Resistance — 610Ω I
Peak Output Current — 1.5 — A
Rise Time ——30 nsec Figure 3-1, Figure 3-2
Fall Time ——30 nsec Figure 3-1, Figure 3-2
Delay Time ——50 nsec Figure 3-1, Figure 3-2
Delay Time ——75 nsec Figure 3-1, Figure 3-2
Power Supply Current —
≤ 18V, unless otherwise noted.
DD
—
—
—
8
0.4
≤ V
IN
DD
= 10mA, VDD = 18V
OUT
= 10mA, VDD = 18V
OUT
mA VIN = 3V (Both Inputs)
= 0V (Both Inputs)
V
IN
2002 Microchip Technology Inc. DS21415B-page 3
TC426/TC427/TC428
TC426/TC427/TC428 ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Characteristics: Over operating temperature range with 4.5V ≤ V
Input
V
IH
V
IL
I
IN
Logic 1, High Input Voltage 2.4 —— V
Logic 0, Low Input Voltage ——0.8 V
Input Curre n t -10 — 10 µA0V ≤ V
Output
V
OH
V
OL
R
OH
R
OL
High Output Voltage VDD – 0.025 —— V
Low Output Voltage ——0.025 V
High Output Resistance — 13 20 Ω I
Low Output Resistance — 815Ω I
Switching Time (Note 1)
t
R
t
F
t
D1
t
D2
Rise Time ——60 nsec Figure 3-1, Figure 3-2
Fall Time ——60 nsec Figure 3-1, Figure 3-2
Delay Time ——75 nsec Figure 3-1, Figure 3-2
Delay Time ——120 nsec Figure 3-1, Figure 3-2
Power Supply
I
S
Note 1: Switching times ensured by design.
Power Supply Current —
—
—
—
≤ 18V, unless otherwise noted.
DD
12
0.6
≤ V
IN
DD
= 10mA, VDD = 18V
OUT
= 10mA, VDD = 18V
OUT
mA VIN = 3V (Both Inputs)
V
= 0V (Both Inputs)
IN
DS21415B-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, CERD IP)
1 NC No Internal Connection.
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 CMOS totem-pole output.
6V
7 OUT A CMOS totem-pole output.
8 NC No internal Connection.
Symbol Description
DD
Supply input, 4.5V to 18V.
TC426/TC427/TC428
2002 Microchip Technology Inc. DS21415B-page 5
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