MIC4451BN product image

MIC4451BN

PMIC - MOSFET, Bridge Drivers - External Switch
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Manufacturer
MICREL [Micrel Semiconductor]
Description
 
MIC4451(MIC4451BN ) and MIC4452 CMOS MOSFET 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 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 the part. 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.
 
MIC4451BN 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 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.............. 450µA With Logic 1 Input
• Low Output Impedance ........................................ 1.0Ω
• Output Voltage Swing to Within 25mV of GND or VS
• Low Equivalent Input Capacitance (typ).................7pF
 
MIC4451BN Applications
 
• 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

 

Parametrics
Delay Time15ns
Current - Peak12A
Number of Configurations1
Number of Outputs1
Voltage - Supply4.5 V ~ 18 V
Operating Temperature-40°C ~ 85°C
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