MIC4423BWMTR Micrel Semiconductor, MIC4423BWMTR Datasheet

MIC4423BWMTR

Manufacturer Part Number

MIC4423BWMTR

Description

Manufacturer

Micrel Semiconductor

Datasheet

1.MIC4423BWMTR.pdf (13 pages)

Specifications of MIC4423BWMTR

Date_code

03+

Packing_info

SOICW-16L

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MIC4423/4424/4425

General Description

The MIC4423/4424/4425 family are highly reliable BiCMOS/

DMOS buffer/driver/MOSFET drivers. They are higher out-

put current versions of the MIC4426/4427/4428, which are

improved versions of the MIC426/427/428. All three families

are pin-compatible. The MIC4423/4424/4425 drivers are ca-

pable of giving reliable service in more demanding electrical

environments than their predecessors. They will not latch

under any conditions within their power and voltage ratings.

They can survive up to 5V of noise spiking, of either polarity,

on the ground pin. They can accept, without either damage

or logic upset, up to half an amp of reverse current (either

polarity) forced back into their outputs.

The MIC4423/4424/4425 series drivers are easier to use, more

ﬂexible in operation, and more forgiving than other CMOS

or bipolar drivers currently available. Their BiCMOS/DMOS

construction dissipates minimum power and provides rail-to-

rail voltage swings.

Primarily intended for driving power MOSFETs, the

MIC4423/4424/4425 drivers are suitable for driving other loads

(capacitive, resistive, or inductive) which require low-imped-

ance, high peak currents, and fast switching times. Heavily

loaded clock lines, coaxial cables, or piezoelectric transducers

are some examples. The only known limitation on loading is

that total power dissipated in the driver must be kept within

the maximum power dissipation limits of the package.

Note: See MIC4123/4124/4125 for high power and narrow

pulse applications.

Functional Diagram

July 2005

Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

INA

INB

2kΩ

0.1mA

Ground Unused Inputs

0.6mA

NONINVERTING

IN V E R T I N G

Features

•

Dual 3A-Peak Low-Side MOSFET Driver

Reliable, low-power bipolar/CMOS/DMOS construction

Latch-up protected to >500mA reverse current

Logic input withstands swing to –5V

High 3A-peak output current

Wide 4.5V to 18V operating range

Drives 1800pF capacitance in 25ns

Short <40ns typical delay time

Delay times consistent with in supply voltage change

Matched rise and fall times

TTL logic input independent of supply voltage

Low equivalent 6pF input capacitance

Low supply current

Low 3.5Ω typical output impedance

Output voltage swings within 25mV of ground or V

‘426/7/8-, ‘1426/7/8-, ‘4426/7/8-compatible pinout

Inverting, noninverting, and differential conﬁgurations

3.5mA with logic-1 input

350µA with logic-0 input

Bipolar/CMOS/DMOS Process

MIC4423/4424/4425

GND

OUTA

O U T B

Integrated Component Count:

4 Resistors

4 Capacitors

52 Transistors

MIC4423/4424/4425

Micrel, Inc.

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