MIC44F18YML TR Micrel Inc, MIC44F18YML TR Datasheet

3A High Speed MOSFET Driver ( )

MIC44F18YML TR

Manufacturer Part Number
MIC44F18YML TR
Description
3A High Speed MOSFET Driver ( )
Manufacturer
Micrel Inc
Datasheet

Specifications of MIC44F18YML TR

Configuration
Low-Side
Input Type
Non-Inverting
Delay Time
15ns
Current - Peak
6A
Number Of Configurations
1
Number Of Outputs
1
Voltage - Supply
4.5 V ~ 13.2 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-MLF®, QFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
High Side Voltage - Max (bootstrap)
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
576-2718-2
MIC44F18YML TR
MIC44F18YMLTR
MIC44F18YMLTR
February 2011
General Description
The MIC44F18, MIC44F19 and MIC44F20 are high-
speed single MOSFET drivers capable of sinking and
sourcing 6A for driving capacitive loads.
times of less than 15ns and rise times into a 1000pF
load of 10ns, these MOSFET drivers are ideal for driving
large
applications. The MIC44F18 is a non-inverting driver,
the MIC44F19 is an inverting driver suited for driving P-
Channel MOSFETs and the MIC44F20 is an inverting
driver for N-Channel MOSFETs.
Fabricated using Micrel’s proprietary BiCMOS/DMOS
process for low power consumption and high efficiency,
the MIC44F18/19/20 translates 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 input supply voltage range of the MIC44F18/19/20
is 4.5V to 13.2V, making the devices suitable for driving
MOSFETs in a wide range of power applications. Other
features include an enable function, latch-up protection,
and a programmable UVLO function.
The MIC44F18/19/20 has a junction temperature range
of –40°C to +125°C with exposed pad ePAD MSOP-8
and 2mm x 2mm MLF
Data sheets and support documentation can be found
on Micrel’s web site at: www.micrel.com.
Typical Applications
MLF and MicroLeadFrame are registered trademarks of Amkor Technologies, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 •
MOSFET Driver with 6.2V UVLO Externally Set
gate
charge
®
-8 package options.
MOSFETs
in
power
With delay
supply
Features
• 4.5V to 13.2V input operating range
• 6A peak output current
• High accuracy ±5% enable input threshold
• High speed switching capability
• Flexible UVLO function
• Latch-up protection to >500mA reverse current on the
• Enable function
• Thermally enhanced ePAD MSOP-8 package option
• Miniature 2mm x 2mm MLF
• Pb-free packaging
Applications
• Synchronous switch-mode power supplies
• Secondary side synchronous rectification
output pin
6A, 13V High Speed MOSFET Drivers
MOSFET Driver with 4.2V UVLO Internally Set
10ns rise time in 1000pF load
<15ns propagation delay time
4.2V internally set UVLO
Programmable with external resistors
MIC44F18/19/20
with Enable Input
®
-8 package option
http://www.micrel.com
M9999-020111-B

Related parts for MIC44F18YML TR

MIC44F18YML TR Summary of contents

Page 1

... MOSFET Driver with 6.2V UVLO Externally Set MLF and MicroLeadFrame are registered trademarks of Amkor Technologies, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • February 2011 6A, 13V High Speed MOSFET Drivers Features • ...

Page 2

Micrel, Inc. Ordering Information Part Number Marking Configuration D12 MIC44F18YML Non-Inverting MIC44F18YMME Non-Inverting D13 MIC44F19YML Inverting Output high when disabled MIC44F19YMME Inverting Output high when disabled D14 MIC44F20YML Inverting Output low when disabled MIC44F20YMME Inverting Output low when disabled Note: ...

Page 3

Micrel, Inc. Logic Table EN/UVLO February 2011 MIC44F18 MIC44F19 OUTPUT OUTPUT LOW HI LOW HI LOW HI HI LOW 3 MIC44F18/19/20 MIC44F20 OUTPUT LOW LOW HI LOW M9999-020111 ...

Page 4

Absolute Maximum Ratings Supply Voltage (V ). ………………………………….. 14V dd UVLO/Enable Voltage (V )…………………....... 14V UVLO/EN Input Voltage (V ) …………… Output Voltage (V ) ……………………………........ 14V OUT Junction Temperature (T )…………………... ..........150°C J Ambient Storage Temperature ...

Page 5

Electrical Characteristics (Continued) 4.5V< V < 13.2V; C =1000pf 25°C, bold values indicate –40°C< Symbol Parameter Output V High Output Voltage OH V Low Output Voltage OL Output Resistance, Output High R O Output ...

Page 6

Typical Characteristics February 2011 6 M9999-020111 ...

Page 7

Typical Characteristics cont. February 2011 7 M9999-020111 ...

Page 8

Timing Diagram Functional Diagram February 2011 Figure 1. MIC44F18/19/20 Functional Block Diagram 8 M9999-020111 ...

Page 9

Functional Description The MIC44F18/19/20 family of drivers are high speed, high current drivers that are designed to drive P-channel and N-channel MOSFETs. The drivers come in both inverting and non-inverting versions. The block diagram of the MIC44Fxx driver is shown ...

Page 10

Output Driver Section A block diagram of the low-side driver is shown in Figure 3. Low driver impedances allow the external MOSFET to be turned on and off quickly. The rail-to-rail drive capability of the output ensures a low R ...

Page 11

Micrel, Inc. Application Information Power Dissipation Considerations Power dissipation in the driver can be separated into two areas: • Output driver stage dissipation • Quiescent current dissipation used to supply the internal logic and control functions. Output Driver Stage Power ...

Page 12

Micrel, Inc. The power dissipated inside the MIC4100/4101 is equal to the ratio of R & the external resistive losses in ON OFF R and R . Letting G_FET ON OFF the MIC44F18 due ...

Page 13

Micrel, Inc. Figure 6C. Maximum Driver Power Dissipation Propagation Delay and Delay Matching and Other Timing Considerations Fast propagation delay between the input and output drive waveform is desirable. It improves overcurrent protection by decreasing the response time between the ...

Page 14

Micrel, Inc. Figure 8 shows the critical current paths when the driver outputs go low and turn off the external MOSFETs. Short, low impedance connections are important during turn-off for the same reasons given in the turn-on explanation. Current from ...

Page 15

Micrel, Inc. The following circuit guidelines should be adhered to for optimum circuit performance: 1. The V bypass capacitor must be placed close to the CC VDD and ground pins critical that the etch length between the decoupling ...

Page 16

Package Information February 2011 8-Pin ePad MSOP (MME) 8-Pin 2mm x 2mm MLF (ML) 16 M9999-020111 ...

Page 17

MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. ...

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