Microchip MIC4451YN

Low-Side14,5 В ~ 18 В

Overview

MIC4451YN and MlC4452 CMOS MOSFET drivers are robust, efficient, and easy to use. The MIC4451YN is an inverting driver, while the MIC4452 is a non-inverting driver.Both versions are capable of 12A(peak) output and can drive the largest MOSFETs with an improved safe operating margin. The MIC4451/4452 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 thepart. Additional circuits protect against damage from electrostatic discharge.MIC4451/4452 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 insures 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.• BiCMOS/DMOS construction• Latch-up prooffully-isolated process is inherently immune to any latch-up• Input wllwithstand negative swing of up to 5V• Matched rise and fall times:25ns• High peak output current:12A peak• Wide operating range:4.5V to 18V• High capacitive load drive:62,000Pf• Low delay time:30ns(typ.)• Logic high input for any voltage from 2.4V to Vs• Low supply current 450uA with logic 1 input• Low output impedance:1.0Q• Output voltage swing to within 25mV of GND or Vs• Low equivalent input capacitance(typ.):7pF• Switch mode power supplies• Motor controls• Pulse transformer driver• Class-D switching amplifiers• Line drivers• Driving MOSFET or IGBT parallel chip modules• Local power ON/OFF switch• Pulse generators

Features

Applications

• Broadcast equipment
• Active filtering
• Head-up and Head mounted displays
• High current laser/LED systems
• LCD/LCoS/DLP portable and embedded pico projectors
• Multicolor LED/laser displays
• Smart Phones
• Portable Navigation Devices
• Portable Media Players
• Motor Controls