MIC4420_11 MIC [MIC GROUP RECTIFIERS], MIC4420_11 Datasheet

MIC4420_11

Manufacturer Part Number

MIC4420_11

Description

6A-Peak Low-Side MOSFET Driver Bipolar/CMOS/DMOS Process

Manufacturer

MIC [MIC GROUP RECTIFIERS]

Datasheet

1.MIC4420_11.pdf (12 pages)

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MIC4420/4429

General Description

MIC4420, MIC4429 and MIC429 MOSFET drivers are

tough, efﬁcient, and easy to use. The MIC4429 and MIC429

are inverting drivers, while the MIC4420 is a non-inverting

driver.

They are capable of 6A (peak) output and can drive the larg-

est MOSFETs with an improved safe operating margin. The

MIC4420/4429/429 accepts any logic input from 2.4V to V

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.

MIC4420/4429/429 drivers can replace three or more

discrete components, reducing PCB area requirements,

simplifying product design, and reducing assembly cost.

Modern BiCMOS/DMOS construction guarantees freedom

from latch-up. The rail-to-rail swing capability insures ad-

equate gate voltage to the MOSFET during power up/down

sequencing.

Note: See MIC4120/4129 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

2kΩ

0.1mA

0.4mA

Features

• CMOS Construction

• Latch-Up Protected: Will Withstand >500mA

• Logic Input Withstands Negative Swing of Up to 5V

• Matched Rise and Fall Times ................................ 25ns

• High Peak Output Current ............................... 6A Peak

• Wide Operating Range ............................... 4.5V to 18V

• High Capacitive Load Drive ............................10,000pF

• Low Delay Time .............................................. 55ns Typ

• Logic High Input for Any Voltage From 2.4V to V

• Low Equivalent Input Capacitance (typ) ..................6pF

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

• Low Output Impedance ......................................... 2.5Ω

• Output Voltage Swing Within 25mV of Ground or V

Applications

• Switch Mode Power Supplies

• Motor Controls

• Pulse Transformer Driver

• Class-D Switching Ampliﬁers

NONINVERTING

Reverse Output Current

IN V E R T I N G

MIC4429

MIC4420

6A-Peak Low-Side MOSFET Driver

Bipolar/CMOS/DMOS Process

MIC4420/4429

GND

OUT

M9999-072205

Micrel, Inc.

Related parts for MIC4420_11

MIC4420_11 Summary of contents

Page 1

MIC4420/4429 General Description MIC4420, MIC4429 and MIC429 MOSFET drivers are tough, efﬁcient, and easy to use. The MIC4429 and MIC429 are inverting drivers, while the MIC4420 is a non-inverting driver. They are capable of 6A (peak) output and can drive ...

Page 2

MIC4420/4429 Ordering Information Part No. Standard MIC4420CN MIC4420BN MIC4420CM MIC4420BM MIC4420BMM MIC4420CT MIC4429CN MIC4429BN MIC4429CM MIC4429BM MIC4429BMM MIC4429CT Pin Conﬁgurations Pin Description Pin Number Pin Number Pin Name TO-220-5 DIP, SOIC, MSOP ...

Page 3

MIC4420/4429 Absolute Maximum Ratings Supply Voltage ...........................................................20V Input Voltage ............................... V Input Current (V > .......................................... 50mA IN S Power Dissipation, T ≤ 25°C A PDIP ....................................................................960W SOIC ...............................................................1040mW 5-Pin TO-220 ...........................................................2W Power Dissipation, T ≤ 25°C C ...

Page 4

MIC4420/4429 Electrical Characteristics: Symbol Parameter INPUT V Logic 1 Input Voltage IH V Logic 0 Input Voltage IL V Input Voltage Range IN I Input Current IN OUTPUT V High Output Voltage OH V Low Output Voltage OL R Output ...

Page 5

MIC4420/4429 Typical Characteristic Curves Rise Time vs. Supply Voltage 10,000 4700 2200 (V) S Rise ...

Page 6

MIC4420/4429 Typical Characteristic Curves (Cont.) Quiescent Power Supply Voltage vs. Supply Current 1000 800 600 LOGIC “1” INPUT 400 200 LOGIC “0” INPUT SUPPLY VOLTAGE (V) High-State Output Resistance 5 100 ...

Page 7

MIC4420/4429 Applications Information Supply Bypassing Charging and discharging large capacitive loads quickly requires large currents. For example, charging a 2500pF load to 18V in 25ns requires a 1.8 A current from the device power supply. The MIC4420/4429 has double bonding ...

Page 8

MIC4420/4429 Input Stage The input voltage level of the 4429 changes the quiescent supply current. The N channel MOSFET input stage tran- sistor drives a 450µA current source load. With a logic “1” input, the maximum quiescent supply current is ...

Page 9

MIC4420/4429 Capacitive Load Power Dissipation Dissipation caused by a capacitive load is simply the en- ergy placed in, or removed from, the load capacitance by the driver. The energy stored in a capacitor is described by the equation ...

Page 10

MIC4420/4429 5. 0.1µF M9999-072205 +18 V WIMA MK22 1 µ PROBE 6302 MIC4429 5 0.1µF 4 Figure 5. Peak Output Current Test Circuit 10 ...

Page 11

MIC4420/4429 Package Information 0.018 (0.57) 0.100 (2.54) July 2005 PIN 1 DIMENSIONS: INCH (MM) 0.380 (9.65) 0.370 (9.40) 0.135 (3.43) 0.125 (3.18) 0.380 (9.65) 0.130 (3.30) 0.320 (8.13) 0.0375 (0.952) 8-Pin Plastic DIP (N) 8-Pin SOIC (M) 11 Micrel, Inc. ...

Page 12

MIC4420/4429 0.112 (2.84) 0.032 (0.81) 0.012 (0.03) 0.0256 (0.65) TYP 0.108 ±0.005 (2.74 ±0.13) 0.067 ±0.005 (1.70 ±0.127) 0.268 REF (6.81 REF) MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL This information furnished ...

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