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MIC4452

更新时间： 2024-10-01 04:10:47

品牌	Logo	应用领域
麦瑞 - MICREL		驱动器
页数	文件大小	规格书
12页	199K
描述
12A-Peak Low-Side MOSFET Driver

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MIC4452 数据手册

MIC4451/4452

Micrel, Inc.

MIC4451/4452

12A-Peak Low-Side MOSFET Driver

Bipolar/CMOS/DMOS Process

General Description

Features

• BiCMOS/DMOS Construction

• Latch-Up Proof: Fully Isolated Process is Inherently

Immune to Any Latch-up.

MIC4451 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.

• 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 V_S

• Low Supply Current.............. 450µA With Logic 1 Input

• Low Output Impedance .........................................1.0Ω

• Output Voltage Swing to Within 25mV of GND or V_S

• Low Equivalent Input Capacitance (typ).................7pF

Both versions are capable of 12A(peak) output and can drive

the largest MOSFETs with an improved safe operating mar-

gin. The MIC4451/4452 accepts any logic input from 2.4V to

V_Swithout 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.

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

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.

Functional Diagram

V_S

MIC4451

INVERTING

0.3mA

0.1mA

OUT

2kΩ

MIC4452

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

July 2005

MIC4451/4452

12 3 4 5 6 7...12

中文翻译

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与MIC4452相关器件

型号	品牌	获取价格	描述	数据表
MIC4452AJBQ	MICREL	获取价格	Buffer/Inverter Based MOSFET Driver, 12A, BICMOS, CDIP8, CERDIP-8
MIC4452AWBQ	MICREL	获取价格	Buffer/Inverter Based MOSFET Driver, 12A, BICMOS, CDFP10, CERPACK-10
MIC4452BM	MICREL	获取价格	12A-Peak Low-Side MOSFET Driver Bipolar/CMOS/DMOS Process
MIC4452BM	MICROCHIP	获取价格	Buffer/Inverter Based MOSFET Driver, 12A, BCDMOS, PDSO8, SOIC-8
MIC4452BN	MICREL	获取价格	12A-Peak Low-Side MOSFET Driver Bipolar/CMOS/DMOS Process
MIC4452CN	MICREL	获取价格	Buffer/Inverter Based MOSFET Driver, 12A, BICMOS, PDIP8, PLASTIC, DIP-8
MIC4452CN	MICROCHIP	获取价格	Buffer/Inverter Based MOSFET Driver, 12A, BICMOS, PDIP8, PLASTIC, DIP-8
MIC4452CT	MICREL	获取价格	12A-Peak Low-Side MOSFET Driver Bipolar/CMOS/DMOS Process
MIC4452VM	MICROCHIP	获取价格	BUF OR INV BASED MOSFET DRIVER
MIC4452VM-TR	MICROCHIP	获取价格	BUF OR INV BASED MOSFET DRIVER

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