TC1428

M Features TC1426/TC1427/TC1428 Package Type 8-Pin PDIP/SOIC NC 1 IN A 2 GND 3 IN B 4 2, 4 7, 5 TC1426CPA 8 NC NC 1 TC1427CPA 8 NC NC 1 TC1428CPA 8 NC 7 OUT A 6 VDD 5 OUT B 2 7 1.2A Dual High-Speed MOSFET Drivers • 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 VDD • Low Output Impedance: 8Ω 7 OUT A IN A 2 6 VDD GND 3 7 OUT A IN A 2 6 VDD GND 3 5 OUT B IN B 4 2, 4 7, 5 5 OUT B IN B 4 Inverting Noninverting 4 5 NC 1 IN A 2 GND 3 IN B 4 2, 4 7, 5 TC1426COA 8 NC NC 1 TC1427COA 8 NC 7 OUT A 6 VDD NC 1 TC1428COA 8 NC 7 OUT A 6 VDD 5 OUT B 2 7 7 OUT A IN A 2 6 VDD GND 3 5 OUT B IN B 4 2, 4 7, 5 5 OUT B IN B 4 Inverting NC = No connection Noninverting 4 5 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, tD1 and tD2, 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 noninverting versions. Specifications have been optimized to achieve low-cost and high-performance devices, well-suited for the high-volume manufacturer. Applications • • • • • Power MOSFET Drivers Switched Mode Power Supplies Pulse Transformer Drive Small Motor Controls Print Head Drive Device Selection Table Part Number TC1426COA TC1426CPA TC1427COA TC1427CPA TC1428COA TC1428CPA Package 8-Pin SOIC 8-Pin PDIP 8-Pin SOIC 8-Pin PDIP 8-Pin SOIC 8-Pin PDIP Temp. Range 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C  2002 Microchip Technology Inc. DS21393B-page 1 TC1426/TC1427/TC1428 Functional Block Diagram V+ ≈500µA ≈2.5mA TC1426 Inverting TC1427 Noninverting TC1428 Inverting/Noninverting Noninverting Output (TC1427) Input Inverting Output (TC1426) 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 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..................................................... +18V Input Voltage, Any Terminal ................................... VDD + 0.3V to GND – 0.3V Power Dissipation (TA ≤ 70°C) 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: TA = +25°C, with 4.5V ≤ VDD ≤ 16V, unless otherwise noted. Symbol Input VIH VIL IIN Output VOH VOL RO IPK IREV High Output Voltage Low Output Voltage Output Resistance Peak Output Current Latch-Up Current Withstand Reverse Current Rise Time Fall Time Delay Time Delay Time Power Supply Current 1: Switching times ensured by design. Parameter Min Typ Max Units Test Conditions Logic 1, High Input Voltage Logic 0, Low Input Voltage Input Current 3 — -1 VDD – 0.025 — — — — — — — — — — 12 8 1.2 >500 — 0.8 1 — 0.025 18 12 — — V V µA 0V ≤ VIN ≤ VDD Figure 3-1, Figure 3-2 Figure 3-1, Figure 3-2 IOUT = 10mA, VDD = 16V V V Ω A mA Switching Time (Note 1) tR tF tD1 tD2 IS Note — — — — — — — — — — — — 35 25 75 75 9 0.5 nsec nsec nsec nsec mA Figure 3-1, Figure 3-2 Figure 3-1, Figure 3-2 Figure 3-1, Figure 3-2 Figure 3-1, Figure 3-2 VIN = 3V (Both Inputs) VIN = 0V (Both Inputs) Power Supply  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 ≤ VDD ≤ 16V, unless otherwise noted. Symbol Input VIH VIL IIN Output VOH VOL RO IREV High Output Voltage Low Output Voltage Output Resistance Latch-Up Current Withstand Reverse Current Rise Time Fall Time Delay Time Delay Time Power Supply Current 1: Switching times ensured by design. Parameter Min Typ Max Units Test Conditions Logic 1, High Input Voltage Logic 0, Low Input Voltage Input Current 3 — -10 VDD – 0.025 — — — — — — — — — 15 10 >500 — 0.8 10 — 0.025 23 18 — V V µA 0V ≤ VIN ≤ VDD Figure 3-1, Figure 3-2 Figure 3-1, Figure 3-2 IOUT = 10mA, VDD = 16V V V Ω mA Switching Time (Note 1) tR tF tD1 tD2 IS Note — — — — — — — — — — — — 60 40 125 125 13 0.7 nsec nsec nsec nsec mA Figure 3-1, Figure 3-2 Figure 3-1, Figure 3-2 Figure 3-1, Figure 3-2 Figure 3-1, Figure 3-2 VIN = 3V (Both Inputs) VIN = 0V (Both Inputs) Power Supply DS21393B-page 4  2002 Microchip Technology Inc. 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) 1 2 3 4 5 6 7 8 PIN FUNCTION TABLE Symbol NC IN A GND IN B OUT B VDD OUT A NC No connection. Control input A, TTL/CMOS compatible logic input. Ground. Control input B, TTL/CMOS compatible logic input. Output B, CMOS totem-pole output. Supply input, 4.5V to 16V. Output A, CMOS totem-pole output. No connection. Description  2002 Microchip Technology Inc. DS21393B-page 5 TC1426/TC1427/TC1428 3.0 3.1 APPLICATIONS INFORMATION SUPPLY BYPASSING 3.3 INPUT STAGE Large currents are required to charge and discharge capacitive loads quickly. For example, charging a 1000pF load to 16V in 25nsec requires a 0.8A current from the device’s power supply. To guarantee 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 (