MIC4421

The MIC4421 is a kind of inverting MOSFET driver. It is rugged, efficient, and easy to use. It can replace three or more discrete components, reducing PCB area requirements, simplifying product design, and reducing assembly cost. The MIC4421 applications include: (1)switch mode power supplies; (2)motor controls; (3)pulse transformer driver; (4)class D switching amplifiers; (5)line drivers; (6)driving MOSFET or IGBT parallel chip modules; (7)local power ON/OFF switch; (8)pulse generators.

There are some features ofMIC4421 as follows: (1)BiCMOS/DMOS construction; (2)latch-up proof: fully isolated process is inherently immune to any latch-up; (3)input will withstand negative swing of up to 5 V; (4)matched rise and fall times: 25 ns; (5)high peak output current: 9 A peak; (6)wide operating range: 4.5 to 18 V; (7)high capacitive load drive: 47000 pF; (8)low delay time: 30 ns typ; (9)logic high input for any voltage from 2.4 to VS; (10)low equivalent input capacitance (typ): 7 pF; (11)low supply current: 450A with logic 1 input; (12)low output impedance: 1.5; (13)output voltage swing to within 25 mV of GND or VS; (14)MIL-STD-883 method 5004/5005 version available.

The following is about the absolute maximum ratings of MIC4421: (1)power dissipation, TAMBIENT25: 960 mW for PDIP, 1040 mW for SOIC, 1250 mW for CerDIP and 2 W for 5-pin TO-220; (2)power dissipation, TCASE25: 12.5 W for 5-pin TO-220; (3)thermal impedance (to case): 10/W for 5-pin TO-220; (4)storage temperature: -65 to +150; (5)operating temperature (chip): 150; (6)operating temperature (ambient): 0 to +70 for C version, -40 to +85 for B version, -55 to +125 for A version; (7)lead temperature (10 sec): 300; (8)supply voltage: 20 V; (9)input voltage: VS+0.3 to GND-5 V; (10)input current (VIN>VS): 50 mA.