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MIC44F18YMME

Part # MIC44F18YMME
Description IC MOSFET DRIVER 6A HS 8-MSOP
Category IC
Availability In Stock
Qty 86
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1 - 18 $1.47742
19 - 36 $1.17522
37 - 54 $1.10807
55 - 72 $1.02972
73 + $0.91779
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Micrel
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Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

MIC44F18/19/20
6A High Speed MOSFET Drivers
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 • http://www.micrel.com
January 2007
M9999-011207
General Description
The MIC44F18, MIC44F19 and MIC44F20 are high-
speed single MOSFET drivers capable of sinking and
sourcing 6A for driving capacitive loads. With delay
times of less than 15ns and rise times into a 1000pF
load of 10ns, these MOSFET drivers are ideal for driving
large gate charge MOSFETs in power supply
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
®
-8 package options.
Data sheets and support documentation can be found
on Micrel’s web site at www.micrel.com.
Features
• 4.5V to 13.2V input operating range
• 6A peak output current
• High accuracy ±5% enable input threshold
• High speed switching capability
- 10ns rise time in 1000pF load
- <15ns propagation delay time
• Flexible UVLO function
- 4.2V internally set UVLO
- Programmable with external resistors
• Latch-up protection to >500mA reverse current on the
output pin
• Enable function
• Thermally enhanced ePAD MSOP-8 package option
• Miniature 2mm x 2mm MLF
®
-8 package option
• Pb-free packaging
Applications
• Synchronous switch-mode power supplies
• Secondary side synchronous rectification
Typical Applications
MOSFET Driver w/6.2V Programmed UVLO Internally Set
MOSFET Driver with 4V
Micrel, Inc. MIC44F18/19/20
January 2007
2
M9999-011207
Ordering Information
Part Number Marking Configuration Junction
Temp. Range
Package Lead
Finish
MIC44F18YML D12 Non-Inverting
–40°C to 125°C
2x2 MLF-8 Pb-Free
MIC44F18YMME Non-Inverting
–40°C to 125°C
ePAD MSOP-8 Pb-Free
MIC44F19YML D13 Inverting Output high when disabled
–40°C to 125°C
2x2 MLF-8 Pb-Free
MIC44F19YMME Inverting Output high when disabled
–40°C to 125°C
ePAD MSOP-8 Pb-Free
MIC44F20YML D14 Inverting Output low when disabled
–40°C to 125°C
2x2 MLF-8 Pb-Free
MIC44F20YMME Inverting Output low when disabled
–40°C to 125°C
ePAD MSOP-8 Pb-Free
Note: Over bar symbol may not be to scale.
Pin Configuration
IN EN/UVLO54
OUT
VDD
NC
OUT
GND
GND
8
7
6
1
2
3
EP
IN EN/UVLO4
OUT
VDD
NC
OUT
GND
GND
8
7
6
1
2
3
5
EP
8-Pin ePAD MSOP (MME)
8-Pin MLF (ML)
Pin Description
Pin Number Pin Name Pin Function
1,8 OUT Driver Output
2 VDD Supply Input
3 NC No Connect
4 IN
Input (Input): Logic high produces a high output voltage for the MIC44F18 and a low
output voltage for the MIC44F19/20. Logic low produces a low output voltage for the
MIC44F18 and a high output voltage for the MIC44F19/20.
5 EN/UVLO
EN / Under-Voltage Lockout (Input): Pulling this pin below low disables the driver.
When disabled, the output is in the off state (low for the MIC44F18/20 and high for
the MIC44F19). Floating this pin enables the driver and the UVLO circuitry when V
DD
reaches the UVLO threshold. A resistor divider can set a different UVLO threshold
voltage as shown on page 1 (See “Application Information” section for more details).
6,7 GND Ground
EP GND Ground. Exposed Backside Pad.
Logic Table
EN/UVLO IN MIC44F18
OUTPUT
MIC44F19
OUTPUT
MIC44F20
OUTPUT
0 0 LOW HI LOW
0 1 LOW HI LOW
1 0 LOW HI HI
1 1 HI LOW LOW
Micrel, Inc. MIC44F18/19/20
January 2007
3
M9999-011207
Absolute Maximum Ratings
(1)
Supply Voltage (V
dd
). ………………………………….. 14V
UVLO/Enable Voltage (V
UVLO/EN
)…………………....... 14V
Input Voltage (V
IN
) …………….. (V
S
+ 0.1V) to (GND-5V)
Output Voltage (V
OUT
) ……………………………........ 14V
Junction Temperature (T
J
)…………………... ..........150°C
Ambient Storage Temperature (T
dd
) ….. -65°C to +150°C
Lead Temperature (10 sec).....................................300°C
ESD Rating, Note 3
Pins 1,2,3,5,6,7,8.................................................2KV
Pin 4................................................................... 500V
Operating Ratings
(2)
Supply Voltage (V
dd
) ............................... 4.5V to 13.2V
Package Thermal Impedance
ePAD MSOP-8 (θ
JA
)……………………… ...78°C/W
2x2 MLF-8L (θ
JA
)……………………............93°C/W
Operating Junction Temperature (T
J
).................. 125°C
Electrical Characteristics
(4)
4.5V< V
dd
< 13.2V; C
L
=1000pf; T
A
= 25°C, bold values indicate –40°C< T
j
< +125°C, unless noted.
Symbol Parameter Condition Min Typ Max Units
Power Supply
V
dd
Supply Voltage Range
4.5
13.2
V
High Output Quiescent Current
V
IN
= 5V (MIC44F18), V
IN
= 0V
(MIC44F19/20)
2.5
mA
I
S
Low Output Quiescent Current
V
IN
= 0V (MIC44F18), V
IN
= 5V
(MIC44F19/20)
2.5
mA
I
SD
Shutdown Current V
EN
= 0V
200
µA
EN/UVLO
V
EN
Enable Threshold
1.3 1.4 1.5
V
Enable Hysteresis 120 mV
V
UVLO
Under-Voltage Lockout
Threshold (Internally Set)
V
EN
= open
V
DD
rising
3.6 4.2 4.4 V
UVLO Hysteresis 370 mV
V
UVLO
Under-Voltage Lockout
Threshold (Externally Set)
V
DD
rising
V
EN
(MAX)
V
dd
V
Input
V
IN
Input Voltage Range Steady State Voltage (note 5)
0 Vdd
V
IH
Logic 1 Input Voltage Ta=25C (+/-5%)
Over temperature range (+/-10%)
1.615
1.53
1.7
1.7
1.785
1.87
V
V
IL
Logic 0 Input Voltage Ta=25C (+/-5%)
Over temperature range (+/-10%)
1.45
1.377
1.53
1.53
1.607
1.683
V
I
IN
Input Current 4.5V< V
IN
< 10V
5
µA
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