The MIC4422A is a non-inverting 9A peak low-side MOSFET driver designed for applications such as switch mode power supplies, motor controls, and class-D amplifiers. It operates from a 4.5V to 18V supply voltage and features a 50ns minimum input pulse width, 15ns typical propagation delay, and output swing within 25mV of GND or V_S. The device supports capacitive loads up to 47,000pF, has a typical input capacitance of 7pF, and draws 500µA typical supply current. It is latch-up proof, accepts input voltages from -5V to V_S + 0.3V, and is available in SOIC-8, PDIP-8, and TO-220-5 packages. The part meets ESD protection standards up to 2kV (human body model) and is fabricated using a self-aligned bipolar/CMOS/DMOS process. Operating temperature ranges include -55°C to +125°C for the X version, -40°C to +85°C for the Y version, and 0°C to +70°C for the Z version.
MIC4421A and MIC4422A MOSFET drivers are rugged, efficient, and easy to use. The MIC4421A is an inverting driver, while the MIC4422A is a non-inverting driver. Both versions are capable of 9A (peak) output and can drive the largest MOSFETs with an improved safe operating margin. The MIC4421A/4422A accepts any logic input from 2.4V to VS without external speed-up capacitors or resistor networks. Proprietary circuits allow the input to swing negative by as much as 5V without damaging the part. Additional circuits protect against damage from electrostatic discharge. MIC4421A/4422A 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.
Additional Features
| Microchip Technology, Inc. | |
|---|---|
| Product Category | Metal-Oxide Semiconductor FET (MOSFET) |
| Product Number | MIC4422A |
| Product Name | 9A Non-Inverting Peak Low Side MOSFET Driver |
