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MIC4452YM 参数 Datasheet PDF下载

MIC4452YM图片预览
型号: MIC4452YM
PDF下载: 下载PDF文件 查看货源
内容描述: 12A峰值低侧MOSFET驱动器 [12A-Peak Low-Side MOSFET Driver]
分类和应用: 驱动器接口集成电路光电二极管PC
文件页数/大小: 14 页 / 495 K
品牌: MICREL [ MICREL SEMICONDUCTOR ]
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MIC4451/4452
12A-Peak Low-Side MOSFET Driver
Bipolar/CMOS/DMOS Process
General Description
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.
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 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.
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.
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 V
S
•..Low
Supply Current450µA 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
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
____________________________________________________________________________________________________________
V
S
Functional Diagram
0.3mA
0.1mA
MIC4451
INVERTING
OUT
IN
2kΩ
MIC4452
NONINVERTING
GND
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
408
) 944-01200 • fax + 1 (408) 474-1000 •
http://www.micrel.com
January 2011
M9999-011811-A