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Micrel Semiconductor
Micrel Semiconductor

MIC44F18 Datasheet Preview

MIC44F18 Datasheet

(MIC44F18 - MIC44F20) 6A High Speed MOSFET Drivers

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MIC44F18 pdf
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MIC44F18/19/20
6A High Speed MOSFET Drivers
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
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



Micrel Semiconductor
Micrel Semiconductor

MIC44F18 Datasheet Preview

MIC44F18 Datasheet

(MIC44F18 - MIC44F20) 6A High Speed MOSFET Drivers

No Preview Available !

MIC44F18 pdf
Micrel, Inc.
MIC44F18/19/20
Ordering Information
www.DataSheet4U.com
Part Number
Marking Configuration
MIC44F18YML
D12 Non-Inverting
MIC44F18YMME
Non-Inverting
MIC44F19YML
D13 Inverting Output high when disabled
MIC44F19YMME
Inverting Output high when disabled
MIC44F20YML
D14 Inverting Output low when disabled
MIC44F20YMME
Inverting Output low when disabled
Note: Over bar symbol may not be to scale.
Junction
Temp. Range
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
Package
2x2 MLF-8
ePAD MSOP-8
2x2 MLF-8
ePAD MSOP-8
2x2 MLF-8
ePAD MSOP-8
Lead
Finish
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pin Configuration
OUT 1
VDD 2
NC 3
IN 4
EP
8 OUT
7 GND
6 GND
5 EN/UVLO
8-Pin ePAD MSOP (MME)
OUT 1
8 OUT
VDD 2
7 GND
NC 3
6 GND
IN 4 EP 5 EN/UVLO
8-Pin MLF (ML)
Pin Description
Pin Number
1,8
2
3
4
5
6,7
EP
Pin Name
OUT
VDD
NC
IN
EN/UVLO
GND
GND
Pin Function
Driver Output
Supply Input
No Connect
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.
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 VDD
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).
Ground
Ground. Exposed Backside Pad.
Logic Table
EN/UVLO
IN
MIC44F18
MIC44F19
MIC44F20
OUTPUT
OUTPUT
OUTPUT
0 0 LOW HI LOW
0 1 LOW HI LOW
1
0
LOW
HI
HI
1
1
HI
LOW
LOW
January 2007
2 M9999-011207


Part Number MIC44F18
Description (MIC44F18 - MIC44F20) 6A High Speed MOSFET Drivers
Maker Micrel Semiconductor
Total Page 13 Pages
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