Datasheet

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 2001-2012 Microchip Technology Inc. DS21393D-page 1

TC1426/TC1427/TC1428

Features:

•Low Cost

• Latch-Up Protected: Will Withstand 500 mA

Reverse Output Current

• ESD Protected ±2kV

• High Peak Output Current: 1.2A

• Wide Operating Range:

- 4.5V to 16V

• High Capacitive Load Drive Capability: 1000 pF in

38 nsec

• Low Delay Time: 75 nsec Max

• Logic Input Threshold Independent of Supply

Voltage

• Output Voltage Swing to Within 25 mV of Ground

or V

• Low Output Impedance: 8

Applications:

• Power MOSFET Drivers

• Switched Mode Power Supplies

• Pulse Transformer Drive

• Small Motor Controls

• Print Head Drive

Device Selection Table

Package Type

General Description:

The TC1426/TC1427/TC1428 are a family of 1.2A dual

high-speed drivers. CMOS fabrication is used for low-

power consumption and high efficiency.

These devices are fabricated using an epitaxial layer 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 compatible 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 with 1.2A peak output current rather

than the 1.5A of the TC426/TC427/TC428 devices.

Other compatible drivers are the TC4426/TC4427/

TC4428 and the TC4426A/TC4427A/TC4428A. The

TC4426/TC4427/TC4428 have the added feature that

the inputs can withstand negative voltage up to 5V with

diode protection circuits. The TC4426A/TC4427A/

TC4428A have matched input to output leading edge

and falling edge delays, t

and t

, for processing

short duration pulses in the 25 nanoseconds range. All

of the above drivers are pin compatible.

The high-input impedance TC1426/TC1427/TC1428

drivers are CMOS/TTL input-compatible, do not require

the speed-up needed by the bipolar devices, and can

be directly driven by most PWM ICs.

This family of devices is available in inverting and non-

inverting versions. Specifications have been optimized

to achieve low-cost and high-performance devices,

well-suited for the high-volume manufacturer.

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

TC1426CPA

OUT A

OUT B

IN A

GND

IN B

2, 4 7, 5

Inverting

TC1427CPA

OUT A

OUT B

IN A

GND

IN B

2, 4 7, 5

Noninverting

TC1428CPA

OUT A

OUT B

IN A

GND

IN B

TC1426COA

OUT A

OUT B

IN A

GND

IN B

NC = No connection

2, 4 7, 5

Inverting

TC1427COA

OUT A

OUT B

IN A

GND

IN B

2, 4 7, 5

Noninverting

TC1428COA

OUT A

OUT B

IN A

GND

IN B

8-Pin PDIP/SOIC

1.2A Dual High-Speed MOSFET Drivers

Summary of content (16 pages)

PAGE 1
TC1426/TC1427/TC1428 1.2A Dual High-Speed MOSFET Drivers Features: Package Type • Low Cost • Latch-Up Protected: Will Withstand 500 mA Reverse Output Current • ESD Protected ±2kV • High Peak Output Current: 1.2A • Wide Operating Range: - 4.
PAGE 2
TC1426/TC1427/TC1428 Functional Block Diagram V+ ≈500 μA ≈2.5 μA TC1426 Inverting TC1427 Noninverting TC1428 Inverting/Noninverting Noninverting Output Inverting Output (TC1427) (TC1426) Input GND NOTE: TC1428 has one inverting and one noninverting driver. Ground any unused driver input. DS21393D-page 2  2001-2012 Microchip Technology Inc.
PAGE 3
TC1426/TC1427/TC1428 1.0 ELECTRICAL CHARACTERISTICS *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. Absolute Maximum Ratings* Supply Voltage .........................
PAGE 4
TC1426/TC1427/TC1428 TC1426/TC1427/TC1428 ELECTRICAL SPECIFICATIONS (CONTINUED) Electrical Characteristics: Over operating temperature range with 4.5V VDD16V, unless otherwise noted. Symbol Parameter Min Typ Max Units V Test Conditions Input VIH Logic 1, High Input Voltage 3 — — VIL Logic 0, Low Input Voltage — — 0.8 V IIN Input Current -10 — 10 A 0VVINVDD Output VOH High Output Voltage VDD – 0.025 — — V Figure 3-1, Figure 3-2 VOL Low Output Voltage — — 0.
PAGE 5
TC1426/TC1427/TC1428 2.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 2-1. TABLE 2-1: Pin No. (8-Pin PDIP, SOIC) PIN FUNCTION TABLE Symbol Description 1 NC No 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 6 VDD 7 OUT A 8 NC  2001-2012 Microchip Technology Inc. Output B, CMOS totem-pole output. Supply input, 4.5V to 16V. Output A, CMOS totem-pole output.
PAGE 6
TC1426/TC1427/TC1428 3.0 APPLICATIONS INFORMATION 3.1 SUPPLY BYPASSING Large currents are required to charge and discharge capacitive loads quickly. For example, charging a 1000 pF load to 16V in 25 nsec requires a 0.8A current from the device's power supply. To ensure low supply impedance over a wide frequency range, a parallel capacitor combination is recommended for supply bypassing. Low-inductance ceramic MLC capacitors with short lead lengths (<0.5-in.) should be used. A 1.
PAGE 7
TC1426/TC1427/TC1428 4.0 TYPICAL CHARACTERISTICS Note: The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range. Rise Time vs.
PAGE 8
TC1426/TC1427/TC1428 TYPICAL CHARACTERISTICS (CONTINUED) Low-State Output Resistance High-State Output Resistance 15 50 42 R OUT (Ω) 50 mA 11 9 100 mA 34 26 A (sec) 13 ROUT (Ω) TA = +25°C TA = +25°C 100 mA Crossover Energy Loss 10-8 50 mA 10-9 10 mA 18 7 10 mA 10 5 5 7 9 11 VDD (V) 13 15 5 7 Quiescent Power Supply Current vs.
PAGE 9
TC1426/TC1427/TC1428 5.0 PACKAGING INFORMATION 5.1 Package Marking Information Package marking data not available at this time. 5.2 Taping Form  2001-2012 Microchip Technology Inc.
PAGE 10
TC1426/TC1427/TC1428 5.3 Package Dimensions Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging 8-Pin Plastic DIP Pin 1 .260 (6.60) .240 (6.10) .045 (1.14) .030 (0.76) .070 (1.78) .040 (1.02) .310 (7.87) .290 (7.37) .400 (10.16) .348 (8.84) .200 (5.08) .140 (3.56) .040 (1.02) .020 (0.51) .150 (3.81) .115 (2.92) .110 (2.79) .090 (2.29) .022 (0.56) .015 (0.38) .015 (0.38) .008 (0.20) 3° Min. .400 (10.16) .
PAGE 11
TC1426/TC1427/TC1428 Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging 8-Pin SOIC Pin 1 .157 (3.99) .150 (3.81) .244 (6.20) .228 (5.79) .050 (1.27) Typ. .197 (5.00) .189 (4.80) .069 (1.75) .053 (1.35) .020 (0.51) .010 (0.25) .013 (0.33) .004 (0.10) .010 (0.25) .007 (0.18) 8° Max. .050 (1.27) .016 (0.40) Dimensions: inches (mm)  2001-2012 Microchip Technology Inc.
PAGE 12
TC1426/TC1427/TC1428 6.0 REVISION HISTORY Revision D (December 2012) Added a note to each package outline drawing. DS21393D-page 12  2001-2012 Microchip Technology Inc.
PAGE 13
TC1426/TC1427/TC1428 THE MICROCHIP WEB SITE CUSTOMER SUPPORT Microchip provides online support via our WWW site at www.microchip.com. This web site is used as a means to make files and information easily available to customers.
PAGE 14
TC1426/TC1427/TC1428 READER RESPONSE It is our intention to provide you with the best documentation possible to ensure successful use of your Microchip product. If you wish to provide your comments on organization, clarity, subject matter, and ways in which our documentation can better serve you, please FAX your comments to the Technical Publications Manager at (480) 792-4150. Please list the following information, and use this outline to provide us with your comments about this document.
PAGE 15
Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. • There are dishonest and possibly illegal methods used to breach the code protection feature.
PAGE 16
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