Catalog
12 A MOSFET Gate Driver
Key Features
- BiCMOS/DMOS construction
- Latch-up proof: fully isolated process is inherently immune to any latch-up.
- Input will withstand negative swing of up to 5 V
- Matched rise and fall times 25 ns
- Wide operating range 4.5 V to 18 V
- High capacitive load drive 62,000 pF
- Low delay time 30 ns (typical)
- Logic high input for any voltage from 2.4 V to VS
- Low equivalent input capacitance 7 pF (typical)
- Low supply current 450 µA with logic 1 input
- Low output impedance 1.0 Ω
- Output voltage swings within 25 mV of ground or VS.
Description
AI
MIC4451 and MIC4452 CMOS MOSFET gate drivers are tough, efficient, and easy to use. The MIC4451 is an inverting driver, while the MIC4452 is a non-inverting driver. Both versions are capable of 12 A (peak) output and can drive the largest MOSFETs with an improved safe operating margin. The MIC4451/4452 accepts any logic input from 2.4 V to VS without external speed-up capacitors or resistor networks. Proprietary circuits allow the input to swing negative by as much as 5 V without damaging the part. Additional circuits protect against damage from electrostatic discharge. MIC4451/4452 gate drivers can replace three or more discrete components, reducing PCB area requirements, simplifying product design, and reducing assembly cost. Modern Bipolar/CMOS/DMOS construction guarantees freedom from latch-up. The rail-to-rail swing capability of CMOS/DMOS helps ensure adequate gate voltage to the MOSFET during power up/down sequencing. Since these devices are fabricated on a self-aligned process, they have very low crossover current, run cool, use little power, and are easy to drive.
