参数资料
型号: MIC4421CN
厂商: Micrel Inc
文件页数: 1/12页
文件大小: 0K
描述: IC DRIVER MOSFET 9A LS 8-DIP
标准包装: 50
配置: 低端
输入类型: 反相
延迟时间: 15ns
电流 - 峰: 9A
配置数: 1
输出数: 1
电源电压: 4.5 V ~ 18 V
工作温度: 0°C ~ 70°C
安装类型: 通孔
封装/外壳: 8-DIP(0.300",7.62mm)
供应商设备封装: 8-PDIP
包装: 管件
MIC4421/4422
General Description
MIC4421 and MIC4422 MOSFET drivers are rugged, ef-
?cient, and easy to use. The MIC4421 is an inverting driver,
while the MIC4422 is a non-inverting driver.
Both versions are capable of 9A (peak) output and can drive
the largest MOSFETs with an improved safe operating mar-
gin. The MIC4421/4422 accepts any logic input from 2.4V to
V S 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.
MIC4421/4422 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 MOS-
FET 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.
Micrel, Inc.
MIC4421/4422
9A-Peak Low-Side MOSFET Driver
Bipolar/CMOS/DMOS Process
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 ...............................9A Peak
? Wide Operating Range .............................. 4.5V to 18V
? High Capacitive Load Drive ........................... 47,000pF
? Low Delay Time .............................................30ns Typ.
? Logic High Input for Any Voltage from 2.4V to V S
? Low Equivalent Input Capacitance (typ) ................. 7pF
? Low Supply Current .............. 450μA With Logic 1 Input
? Low Output Impedance .........................................1.5Ω
? Output Voltage Swing to Within 25mV of GND or V S
Applications
? Switch Mode Power Supplies
? Motor Controls
? Pulse Transformer Driver
? Class-D Switching Ampli?ers
? Line Drivers
? Driving MOSFET or IGBT Parallel Chip Modules
? Local Power ON/OFF Switch
? Pulse Generators
Functional Diagram
V S
IN
0.1mA
2k?
0.3mA
MIC4421
IN V E R T I N G
OUT
MIC4422
NONINVERTING
GND
Micrel, Inc. ? 2180 Fortune Drive ? San Jose, CA 95131 ? USA ? tel + 1 (408) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com
August 2005
1
M9999-081005
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