MIC4424 Micrel Semiconductor, MIC4424 Datasheet

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MIC4424

Manufacturer Part Number
MIC4424
Description
Dual 3A-Peak Low-Side MOSFET Driver Bipolar/CMOS/DMOS Process
Manufacturer
Micrel Semiconductor
Datasheet

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0
MIC4423/4424/4425
General Description
The MIC4423/4424/4425 family are highly reliable BiCMOS/
DMOS buffer/driver/MOSFET drivers. They are higher output
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
capable 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-
impedance, 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.
Functional Diagram
January 1999
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
INA
INB
2k
2k
0.1mA
0.1mA
Ground Unused Inputs
0.6mA
0.6mA
NONINVERTING
NONINVERTING
1
INVERTING
INVERTING
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 3.5 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
350 A with logic-0 input
Bipolar/CMOS/DMOS Process
MIC4423/4424/4425
GND
V
S
OUTA
OUTB
Integrated Component Count:
4 Resistors
4 Capacitors
52 Transistors
MIC4423/4424/4425
Micrel
S
.

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MIC4424 Summary of contents

Page 1

MIC4423/4424/4425 General Description The MIC4423/4424/4425 family are highly reliable BiCMOS/ DMOS buffer/driver/MOSFET drivers. They are higher output 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 capable of ...

Page 2

... Dual Non-Inverting Dual Non-Inverting Dual Non-Inverting Inverting + Non Inverting Inverting + Non Inverting Inverting + Non Inverting MIC4423xN/M MIC4423xWM A 7 OUTA INA OUTB INB 7 B MIC4424xN/M MIC4424xWM A 7 OUTA INA OUTB INB 7 B MIC4425xN/M MIC4425xWM A 7 OUTA INA ...

Page 3

MIC4423/4424/4425 Absolute Maximum Ratings Supply Voltage ........................................................... +22V Input Voltage ................................. V Junction Temperature .............................................. 150 C Storage Temperature Range .................... – 150 C Lead Temperature (10 sec.) ..................................... 300 C ESD Susceptability, Note 3 ...................................... 1000V MIC4423/4424/4425 ...

Page 4

... Figure 1a. Inverting Driver Switching Time MIC4423/4424/4425 4.7µF OUTA OUTB 5V 2.5V 90% INPUT t 0.5µ 90% OUTPUT 10% 0V Figure 1b. Noninverting Driver Switching Time 18V S 0.1µF 4.7µF INA A OUTA 1800pF MIC4424 INB B OUTB 1800pF 2. Micrel t 0.5µ January 1999 ...

Page 5

MIC4423/4424/4425 Typical Characteristic Curves Rise Time vs. Supply Voltage 100 4700pF 80 1800pF 3300pF 60 1000pF 2200pF 40 20 470pF (V) SUPPLY Fall Time vs. Capacitive Load 100 80 5V ...

Page 6

MIC4423/4424/4425 Delay Time vs. Supply Voltage 2200 pF LOAD (V) SUPPLY Quiescent Current vs. Temperature 1 ...

Page 7

MIC4423/4424/4425 Application Information Although the MIC4423/24/25 drivers have been specifically constructed to operate reliably under any practical circumstances, there are nonetheless details of usage which will provide better operation of the device. Supply Bypassing Charging and discharging large capacitive loads ...

Page 8

MIC4423/4424/4425 to the ground pin of the driver directly to the ground terminal of the load. Do not use a twisted pair where the second wire in the pair is the output of the other driver, as this will not ...

Page 9

MIC4423/4424/4425 in estimating power dissipation in the driver. Operating frequency, power supply voltage, and load all affect power dissipation. Given the power dissipation in the device, and the thermal resistance of the package, junction operating temperature for any ambient is ...

Page 10

... C, will result in a maximum junction temperature of 89.4 C. EXAMPLE 2: A MIC4424 operating on a 15V input, with one driver driving a 50 resistive load at 1MHz, with a duty cycle of 67%, and the other driver quiescent maximum ambient ...

Page 11

MIC4423/4424/4425 NOTE: THE VALUES ON THIS GRAPH REPRESENT THE LOSS SEEN BY BOTH DRIVERS IN A PACKAGE DURING ONE COMPLETE CYCLE. FOR A SINGLE DRIVER DIVIDE THE STATED VALUES BY 2. FOR A SINGLE TRANSITION OF A SINGLE DRIVER, DIVIDE ...

Page 12

MIC4423/4424/4425 Package Information 0.018 (0.57) 0.026 (0.65) 0.157 (3.99) 0.150 (3.81) 0.064 (1.63) 0.045 (1.14) 0.301 (7.645) 0.297 (7.544) 0.027 (0.686) 0.031 (0.787) 0.094 (2.388) 0.090 (2.286) MICREL INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) ...

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