M TC1426/TC1427/TC1428 1.2A Dual High-Speed MOSFET Drivers Features Package Type • Low Cost 8-Pin PDIP/SOIC (cid:127) Latch-Up Protected: Will Withstand 500mA NC 1 8 NC NC 1 8 NC NC 1 8 NC Reverse Output Current IN A 2 7 OUT A IN A 2 7 OUT A IN A 2 7 OUT A TC1426CPA TC1427CPA TC1428CPA (cid:127) ESD Protected ±2kV GND 3 6 VDD GND 3 6 VDD GND 3 6 VDD IN B 4 5 OUT B IN B 4 5 OUT B IN B 4 5 OUT B (cid:127) High Peak Output Current: 1.2A 2, 4 7, 5 2, 4 7, 5 2 7 (cid:127) Wide Operating Range Inverting Noninverting 4 5 - 4.5V to 16V (cid:127) High Capacitive Load Drive Capability: 1000pF in NC 1 8 NC NC 1 8 NC NC 1 8 NC 38nsec IN A 2 7 OUT A IN A 2 7 OUT A 7 OUT A TC1426COA TC1427COA TC1428COA GND 3 6 VDD GND 3 6 VDD 6 VDD (cid:127) Low Delay Time: 75nsec Max IN B 4 5 OUT B IN B 4 5 OUT B INB 4 5 OUT B (cid:127) Logic Input Threshold Independent of Supply 2, 4 7, 5 2, 4 7, 5 2 7 Voltage Inverting Noninverting 4 5 (cid:127) Output Voltage Swing to Within 25mV of Ground NC = No connection or V DD (cid:127) Low Output Impedance: 8 Ω General Description Applications The TC1426/TC1427/TC1428 are a family of 1.2A dual high-speed drivers. CMOS fabrication is used for low (cid:127) Power MOSFET Drivers power consumption and high efficiency. (cid:127) Switched Mode Power Supplies These devices are fabricated using an epitaxial layer to (cid:127) Pulse Transformer Drive effectively short out the intrinsic parasitic transistor (cid:127) Small Motor Controls responsible for CMOS latch-up. They incorporate a number of other design and process refinements to (cid:127) Print Head Drive increase their long-term reliability. Device Selection Table The TC1426 is compatible with the bipolar DS0026, but only draws 1/5 of the quiescent current. The TC1426/ Part Number Package Temp. Range TC1427/TC1428 are also compatible with the TC426/ TC427/TC428, but with 1.2A peak output current rather TC1426COA 8-Pin SOIC 0°C to +70°C than the 1.5A of the TC426/TC427/TC428 devices. TC1426CPA 8-Pin PDIP 0°C to +70°C Other compatible drivers are the TC4426/TC4427/ TC1427COA 8-Pin SOIC 0°C to +70°C TC4428 and the TC4426A/TC4427A/TC4428A. The TC1427CPA 8-Pin PDIP 0°C to +70°C TC4426/TC4427/TC4428 have the added feature that TC1428COA 8-Pin SOIC 0°C to +70°C the inputs can withstand negative voltage up to 5V with diode protection circuits. The TC4426A/TC4427A/ TC1428CPA 8-Pin PDIP 0°C to +70°C TC4428A have matched input to output leading edge and falling edge delays, t and t , for processing D1 D2 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.  2002 Microchip Technology Inc. DS21393B-page 1

TC1426/TC1427/TC1428 Functional Block Diagram V+ ≈500µA TC1426 Inverting TC1427 Noninverting ≈2.5mA TC1428 Inverting/Noninverting Noninverting Inverting Output Output (TC1427) (TC1426) Input GND NOTE: TC1428 has one inverting and one noninverting driver. Ground any unused driver input. DS21393B-page 2  2002 Microchip Technology Inc.

TC1426/TC1427/TC1428 1.0 ELECTRICAL *Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These CHARACTERISTICS are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the Absolute Maximum Ratings* operation sections of the specifications is not implied. Exposure to Absolute Maximum Rating conditions for Supply Voltage.....................................................+18V extended periods may affect device reliability. Input Voltage, Any Terminal ...................................V + 0.3V to GND – 0.3V DD Power Dissipation (T ≤ 70°C) A PDIP........................................................730mW SOIC........................................................470mW Derating Factor PDIP........................................................8mW/°C SOIC........................................................4mW/°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: T = +25°C, with 4.5V ≤ V ≤ 16V, unless otherwise noted. A DD Symbol Parameter Min Typ Max Units Test Conditions Input V Logic 1, High Input Voltage 3 — — V IH V Logic 0, Low Input Voltage — — 0.8 V IL I Input Current -1 — 1 µA 0V ≤ V ≤ V IN IN DD Output V High Output Voltage V – 0.025 — — V Figure3-1, Figure3-2 OH DD V Low Output Voltage — — 0.025 V Figure3-1, Figure3-2 OL R Output Resistance — 12 18 Ω I = 10mA, V = 16V O OUT DD — 8 12 I Peak Output Current — 1.2 — A PK I Latch-Up Current — >500 — mA REV Withstand Reverse Current Switching Time (Note 1) t Rise Time — — 35 nsec Figure3-1, Figure3-2 R t Fall Time — — 25 nsec Figure3-1, Figure3-2 F t Delay Time — — 75 nsec Figure3-1, Figure3-2 D1 t Delay Time — — 75 nsec Figure3-1, Figure3-2 D2 Power Supply I Power Supply Current — — 9 mA V = 3V (Both Inputs) S IN — — 0.5 V = 0V (Both Inputs) IN Note 1: Switching times ensured by design.  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 ≤ 16V, unless otherwise noted. DD Symbol Parameter Min Typ Max Units Test Conditions Input V Logic 1, High Input Voltage 3 — — V IH V Logic 0, Low Input Voltage — — 0.8 V IL I Input Current -10 — 10 µA 0V ≤ V ≤ V IN IN DD Output V High Output Voltage V – 0.025 — — V Figure3-1, Figure3-2 OH DD V Low Output Voltage — — 0.025 V Figure3-1, Figure3-2 OL R Output Resistance — 15 23 Ω I = 10mA, V = 16V O OUT DD — 10 18 I Latch-Up Current — >500 — mA REV Withstand Reverse Current Switching Time (Note 1) t Rise Time — — 60 nsec Figure3-1, Figure3-2 R t Fall Time — — 40 nsec Figure3-1, Figure3-2 F t Delay Time — — 125 nsec Figure3-1, Figure3-2 D1 t Delay Time — — 125 nsec Figure3-1, Figure3-2 D2 Power Supply I Power Supply Current — — 13 mA V = 3V (Both Inputs) S IN — — 0.7 V = 0V (Both Inputs) IN Note 1: Switching times ensured by design. DS21393B-page 4  2002 Microchip Technology Inc.

TC1426/TC1427/TC1428 2.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table2-1. TABLE 2-1: PIN FUNCTION TABLE Pin No. (8-Pin PDIP, Symbol Description SOIC) 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 Output B, CMOS totem-pole output. 6 V Supply input, 4.5V to 16V. DD 7 OUT A Output A, CMOS totem-pole output. 8 NC No connection.  2002 Microchip Technology Inc. DS21393B-page 5

TC1426/TC1427/TC1428 3.0 APPLICATIONS INFORMATION 3.3 INPUT STAGE The input voltage level changes the no-load or 3.1 SUPPLY BYPASSING quiescent supply current. The N-channel MOSFET Large currents are required to charge and discharge input stage transistor drives a 2.5mA current source capacitive loads quickly. For example, charging a load. With a logic "1" input, the maximum quiescent 1000pF load to 16V in 25nsec requires a 0.8A current supply current is 9mA. Logic "0" input level signals from the device’s power supply. reduce quiescent current to 500µA maximum. Unused driver inputs must be connected to V or GND. To guarantee low supply impedance over a wide DD Minimum power dissipation occurs for logic "0" inputs frequency range, a parallel capacitor combination is for the TC1426/TC1427/TC1428. recommended for supply bypassing. Low-inductance ceramic MLC capacitors with short lead lengths The drivers are designed with 100mV of hysteresis. (<0.5-in.) should be used. A 1.0µF film capacitor in This provides clean transitions and minimizes output parallel with one or two 0.1µF ceramic MLC capacitors stage current spiking when changing states. Input normally provides adequate bypassing. voltage thresholds are approximately 1.5V, making a logic "1" input any voltage greater than 1.5V up to V . DD 3.2 GROUNDING Input current is less than 1µA over this range. The TC1426 and TC1428 contain inverting drivers. The TC1426/TC1427/TC1428 may be directly driven Individual ground returns for the input and output by the TL494, SG1526/27, TC38C42, TC170 and circuits or a ground plane should be used. This will similar switch-mode power supply integrated circuits. reduce negative feedback that causes degradation in switching speed characteristics. FIGURE 3-1: INVERTING DRIVER FIGURE 3-2: NONINVERTING DRIVER SWITCHING TIME SWITCHING TIME VDD = 16V VDD = 16V Test Circuit Test Circuit 1µF 0.1µF MLC 1WµIFMA 0.1µF MLC MKS-2 MKS-2 Input 1 Output Input 1 Output CL = 1000pF CL = 1000pF 2 2 TC1427 TC1426 (1/2 TC1428) (1/2 TC1428) +5V +5V 90% 90% Input Input 10% 0V 10% 0V VDD 90tD%1 tF tD2 tR 90% OuVtpDuDt tD1 90% tR tD2 90% tF Output 0V 10% 10% 10% 10% 0V DS21393B-page 6  2002 Microchip Technology Inc.

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. Supply Voltage Fall Time vs. Supply Voltage Delay Time vs. Supply Voltage 550 TA = +25°C 330 TA = +25°C 80 CL = 1000pF 440 264 70 TA = +25°C sec)330 10,000pF sec)198 10,000pF sec)60 n n n E ( E ( E ( TIM220 4700pF TIM132 4700pF TIM50 tD1 110 2200pF 66 2200pF 40 tD2 0 0 30 5 7 9 11 13 15 5 7 9 11 13 15 5 7 9 11 13 15 VDD (V) VDD (V) VDD (V) Rise and Fall Times vs. Temperature Delay Time vs. Temperature Supply Current vs. Capacitive Load 40 60 30 CL = 1000pF CL = 1000pF CL = 1000pF 32 VDD = +15V tRISE 54 VDD = +15V mA)24 VTAD D= =+ 2+51°5CV 500kHz sec)24 tFALL sec)48 tD2 RENT (18 TIME (n16 TIME (n42 tD1 LY CUR12 20200kkHHzz P P 8 36 SU 6 0 0 0 25 45 65 85 105 125 25 45 65 85 105 125 100 520 940 1360 1780 2200 TEMPERATURE (°C) TEMPERATURE (°C) CAPACITIVE LOAD (pF) Rise Time vs. Capacitive Load Fall Time vs. Capacitive Load Supply Current vs. Frequency 1000 1000 100 TA = +25°C TA = +25°C TCAL == +102050°CpF VDD = 15V mA)80 VDD = 10V TIME (nsec) 100 10 VDD 5 VDD TIME (nsec)100 10 VDD 5 VDD Y CURRENT (4600 L P P 15 VDD 15VDD SU20 VD D = 5V 10 10 0 100 1000 10,000 100 1000 10,000 10 100 1000 10,000 CAPACITIVE LOAD (pF) CAPACITIVE LOAD (pF) FREQUENCY (kHz)  2002 Microchip Technology Inc. DS21393B-page 7

TC1426/TC1427/TC1428 TYPICAL CHARACTERISTICS (CONTINUED) Low-State Output Resistance High-State Output Resistance Crossover Energy Loss 15 100mA TA = +25°C 50 TA = +25°C 10-8 13 42 100mA 50mA Ω( )11 Ω() 34 c) UT UT se 10-9 RO 9 RO26 50mA A ( 10mA 7 18 10mA 5 10 10-10 5 7 9 11 13 15 5 7 9 11 13 15 4 6 8 10 12 14 16 18 VDD (V) VDD (V) VDD (V) Quiescent Power Supply Quiescent Power Supply Current vs. Supply Voltage Current vs. Supply Voltage 20 20 BOTH INPUTS LOGIC "0" BOTH INPUTS LOGIC "1" OLTAGE (V) 1150 OLTAGE (V)15 V V10 Y Y L L P P UP 5 UP S S 5 0 0 0 50 100 150 200 300 400 1 2 3 4 5 6 SUPPLY CURRENT (µA) SUPPLY CURRENT (mA) Thermal Derating Curves 1600 1400 8 Pin DIP W) 1200 m R ( 1000 E W O 800 P 8 Pin SOIC X. 600 A M 400 200 0 0 10 20 30 40 50 60 70 80 90 100 110 120 AMBIENT TEMPERATURE (°C) DS21393B-page 8  2002 Microchip Technology Inc.

TC1426/TC1427/TC1428 5.0 PACKAGING INFORMATION 5.1 Package Marking Information Package marking data not available at this time. 5.2 Package Dimensions 8-Pin Plastic DIP PIN1 .260 (6.60) .240 (6.10) .045 (1.14) .070 (1.78) .030 (0.76) .040 (1.02) .310 (7.87) .400 (10.16) .290 (7.37) .348 (8.84) .200 (5.08) .140 (3.56) .040 (1.02) .020 (0.51) .015 (0.38) 3°MIN. .150 (3.81) .008 (0.20) .115 (2.92) .400 (10.16) .310 (7.87) .110 (2.79) .022 (0.56) .090 (2.29) .015 (0.38) Dimensions: inches (mm) 8-Pin SOIC PIN1 .157 (3.99) .244 (6.20) .150 (3.81) .228 (5.79) .050 (1.27) TYP. .197 (5.00) .189 (4.80) .069 (1.75) .053 (1.35) 8°MAX.. .010 (0.25) .007 (0.18) .020 (0.51) .010 (0.25) .013 (0.33) .004 (0.10) .050 (1.27) .016 (0.40) Dimensions: inches (mm)  2002 Microchip Technology Inc. DS21393B-page 9

TC1426/TC1427/TC1428 NOTES: DS21393B-page 10  2002 Microchip Technology Inc.

TC1426/TC1427/TC1428 Sales and Support Data Sheets Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recom- mended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following: 1. Your local Microchip sales office 2. The Microchip Corporate Literature Center U.S. FAX: (480) 792-7277 3. The Microchip Worldwide Site (www.microchip.com) Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using. New Customer Notification System Register on our web site (www.microchip.com/cn) to receive the most current information on our products.  2002 Microchip Technology Inc. DS21393B-page11

TC1426/TC1427/TC1428 NOTES: DS21393B-page12  2002 Microchip Technology Inc.

TC1426/TC1427/TC1428 Information contained in this publication regarding device Trademarks applications and the like is intended through suggestion only and may be superseded by updates. It is your responsibility to The Microchip name and logo, the Microchip logo, FilterLab, ensure that your application meets with your specifications. KEELOQ, microID, MPLAB, PIC, PICmicro, PICMASTER, No representation or warranty is given and no liability is PICSTART, PRO MATE, SEEVAL and The Embedded Control assumed by Microchip Technology Incorporated with respect Solutions Company are registered trademarks of Microchip Tech- to the accuracy or use of such information, or infringement of nology Incorporated in the U.S.A. and other countries. patents or other intellectual property rights arising from such dsPIC, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, use or otherwise. Use of Microchip’s products as critical com- In-Circuit Serial Programming, ICSP, ICEPIC, microPort, ponents in life support systems is not authorized except with Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM, express written approval by Microchip. No licenses are con- MXDEV, PICC, PICDEM, PICDEM.net, rfPIC, Select Mode veyed, implicitly or otherwise, under any intellectual property and Total Endurance are trademarks of Microchip Technology rights. Incorporated in the U.S.A. Serialized Quick Turn Programming (SQTP) is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. © 2002, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received QS-9000 quality system certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona in July 1999 and Mountain View, California in March 2002. The Company’s quality system processes and procedures are QS-9000 compliant for its PICmicro® 8-bit MCUs, KEELOQ® code hopping devices, Serial EEPROMs, microperipherals, non-volatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001 certified.  2002 Microchip Technology Inc. DS21393B-page 13

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Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: M icrochip: TC1426COA TC1426CPA TC1428CPA TC1428COA TC1427COA TC1427CPA TC1428COA713 TC1426COA713 TC1427COA713