TC4427 Power MOSFET Driver

The TC4427 is improved version of the earlier TC427 family of buffer/drivers (with which they are pin compatible).

They will not latch up under any conditions within their power and voltage ratings. They are not subject to damage when up to 5V of noise spiking (of either polarity) occurs on the ground pin. They can accept, without damage or logic upset, up to 500 mA of reverse current (of either polarity) being forced back into their outputs. All terminals are fully protected against up to 2kV of electrostatic discharge. As MOSFET drivers, the TC4426 can switch 1000pF gate capacitances in 25 nsec, and provide low enough impedances in both the ON and OFF states to ensure the MOSFET's intended state will not be affected by large transients. However, the recommended pin-compatible drivers are the TC4426A/27A/28A. These drivers have matched input to output leading edge and falling edge delays, tD1 and tD2, for processing short duration pulses in the 25 nsec range. They are pin compatible with the TC4426/27/28.

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Features of TC4427 Power MOSFET Driver

• Wide Operating Range : 4.5V to 18V

• High Capacitive Load Drive Capability : 1000pF in 25nsec

• Short Delay Times : 40nsec Typical

• Consistent Delay Times With Changes in Supply Voltage

• Low Supply Current

  •   4.5 mA With Logic ""1"Input

  •   400 µA With Logic ""0"Input

• Low Output Impedance : 7 ohms Typical at 25 °C

• Latch-Up Protected : Will Withstand >0.5A Reverse Current, Down to – 5V

• Input Will Withstand Negative Inputs

• ESD Protected : 2kV HBM

• Pinouts Same as TC426/27/28