参数资料
型号: MIC4427BM
厂商: Micrel Inc
文件页数: 1/9页
文件大小: 0K
描述: IC DRIVER MOSFET 1.5A DUAL 8SOIC
标准包装: 95
配置: 低端
输入类型: 非反相
延迟时间: 17ns
电流 - 峰: 1.5A
配置数: 2
输出数: 2
电源电压: 4.5 V ~ 18 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOIC
包装: 管件
MIC4426/4427/4428
General Description
The MIC4426/4427/4428 family are highly-reliable dual low-
side MOSFET drivers fabricated on a BiCMOS/DMOS process
for low power consumption and high ef?ciency. These drivers
translate TTL or CMOS input logic levels to output voltage
levels that swing within 25mV of the positive supply or ground.
Comparable bipolar devices are capable of swinging only
to within 1V of the supply. The MIC4426/7/8 is available in
three con?gurations: dual inverting, dual noninverting, and
one inverting plus one noninverting output.
The MIC4426/4427/4428 are pin-compatible replacements
for the MIC426/427/428 and MIC1426/1427/1428 with im-
proved electrical performance and rugged design (Refer to
the Device Replacement lists on the following page). They
can withstand up to 500mA of reverse current (either polarity)
without latching and up to 5V noise spikes (either polarity)
on ground pins.
Primarily intended for driving power MOSFETs, MIC4426/7/8
drivers are suitable for driving other loads (capacitive, resistive,
or inductive) which require low-impedance, high peak current,
and fast switching time. Other applications include driving
heavily loaded clock lines, coaxial cables, or piezoelectric
transducers. The only load limitation is that total driver power
dissipation must not exceed the limits of the package.
Note See MIC4126/4127/4128 for high power and narrow
pulse applications.
Functional Diagram
Micrel, Inc.
MIC4426/4427/4428
Dual 1.5A-Peak Low-Side MOSFET Driver
Features
? Bipolar/CMOS/DMOS construction
? Latch-up protection to >500mA reverse current
? 1.5A-peak output current
? 4.5V to 18V operating range
? Low quiescent supply current
4mA at logic 1 input
400μA at logic 0 input
? Switches 1000pF in 25ns
? Matched rise and rall times
? 7Ω output impedance
? <40ns typical delay
? Logic-input threshold independent of supply voltage
? Logic-input protection to –5V
? 6pF typical equivalent input capacitance
? 25mV max. output offset from supply or ground
? Replaces MIC426/427/428 and MIC1426/1427/1428
? Dual inverting, dual noninverting, and inverting/
noninverting con?gurations
? ESD protection
Applications
? MOSFET driver
? Clock line driver
? Coax cable driver
? Piezoelectic transducer driver
V S
INA
INB
0.1mA
2k?
0.1mA
2k?
0.6mA
0.6mA
INVERTING
NONINVERTING
INVERTING
OUTA
OUTB
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
April 2008
1
M9999-042108
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