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Analog Devices Semiconductor Electronic Components Datasheet

LTC4444HMS8E Datasheet

High Voltage Synchronous N-Channel MOSFET

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FEATURES
nn AEC-Q100 Qualified for Automotive Applications
nn Bootstrap Supply Voltage to 114V
nn Wide VCC Voltage: 7.2V to 13.5V
nn Adaptive Shoot-Through Protection
nn 2.5A Peak TG Pull-Up Current
nn 3A Peak BG Pull-Up Current
nn 1.2Ω TG Driver Pull-Down
nn 0.55Ω BG Driver Pull-Down
nn 5ns TG Fall Time Driving 1nF Load
nn 8ns TG Rise Time Driving 1nF Load
nn 3ns BG Fall Time Driving 1nF Load
nn 6ns BG Rise Time Driving 1nF Load
nn Drives Both High and Low Side N-Channel MOSFETs
nn Undervoltage Lockout
nn Thermally Enhanced 8-Lead MSOP Package
APPLICATIONS
nn Distributed Power Architectures
nn Automotive Power Supplies
nn High Density Power Modules
nn Telecommunications
All registered trademarks and trademarks are the property of their respective owners. Protected
by U.S. patents, including 6677210.
LTC4444
High Voltage Synchronous
N-Channel MOSFET Driver
DESCRIPTION
The LTC®4444 is a high frequency high voltage gate driver
that drives two N-channel MOSFETs in a synchronous
DC/DC converter with supply voltages up to 100V. This
powerful driver reduces switching losses in MOSFETs
with high gate capacitance.
The LTC4444 is configured for two supply-independent
inputs. The high side input logic signal is internally
level‑shifted to the bootstrapped supply, which may func-
tion at up to 114V above ground.
The LTC4444 contains undervoltage lockout circuits that
disable the external MOSFETs when activated. Adaptive
shoot-through protection prevents both MOSFETs from
conducting simultaneously.
For a similar driver in this product family, please refer to
the chart below.
PARAMETER
Shoot-Through Protection
Absolute Max TS
MOSFET Gate Drive
VCC UV+
VCC UV
LTC4444
Yes
100V
7.2V to 13.5V
6.6V
6.15V
LTC4446
No
100V
7.2V to 13.5V
6.6V
6.15V
LTC4444-5
Yes
100V
4.5V to 13.5V
4V
3.55V
TYPICAL APPLICATION
High Input Voltage Buck Converter
VCC
7.2V TO 13.5V
PWM1
(FROM CONTROLLER IC)
PWM2
(FROM CONTROLLER IC)
BOOST
VCC
TG
LTC4444
TINP
TS
BINP
BG
GND
VIN
100V
(ABS MAX)
VOUT
4444 TA01a
LTC4444 Driving a 1000pF Capacitive Load
BINP
5V/DIV
BG
10V/DIV
TINP
5V/DIV
TG-TS
10V/DIV
20ns/DIV
4444 TA01b
Rev. C
Document Feedback
For more information www.analog.com
1


Analog Devices Semiconductor Electronic Components Datasheet

LTC4444HMS8E Datasheet

High Voltage Synchronous N-Channel MOSFET

No Preview Available !

LTC4444
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Supply Voltage
VCC......................................................... –0.3V to 14V
BOOST – TS............................................ –0.3V to 14V
TINP Voltage...................................................–2V to 14V
BINP Voltage...................................................–2V to 14V
BOOST Voltage..........................................–0.3V to 114V
TS Voltage................................................... –5V to 100V
Operating Junction Temperature Range
(Notes 2, 3)......................................... –55°C to 150°C
Storage Temperature Range...................–65°C to 150°C
Lead Temperature (Soldering, 10 sec).................... 300°C
PIN CONFIGURATION
TOP VIEW
TINP 1
8 TS
BINP 2
9
7 TG
VCC 3
GND
6 BOOST
BG 4
5 NC
MS8E PACKAGE
8-LEAD PLASTIC MSOP
TJMAX = 125°C, θJA = 40°C/W, θJC = 10°C/W (NOTE 4)
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC4444EMS8E#PBF
LTC4444EMS8E#TRPBF
LTDBF
8-Lead Plastic MSOP
–40°C to 125°C
LTC4444IMS8E#PBF
LTC4444IMS8E#TRPBF
LTDBF
8-Lead Plastic MSOP
–40°C to 125°C
LTC4444HMS8E#PBF
LTC4444HMS8E#TRPBF
LTDBF
8-Lead Plastic MSOP
–40°C to 150°C
LTC4444MPMS8E#PBF LTC4444MPMS8E#TRPBF
LTDBF
8-Lead Plastic MSOP
–55°C to 150°C
AUTOMOTIVE PRODUCTS**
LTC4444EMS8E#WPBF LTC4444EMS8E#WTRPBF
LTDBF
8-Lead Plastic MSOP
–40°C to 125°C
LTC4444IMS8E#WPBF LTC4444IMS8E#WTRPBF
LTDBF
8-Lead Plastic MSOP
–40°C to 125°C
LTC4444HMS8E#WPBF LTC4444HMS8E#WTRPBF
LTDBF
8-Lead Plastic MSOP
–40°C to 150°C
Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
**Versions of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These
models are designated with a #W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your
local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for
these models.
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating junction
temperature range, otherwise specifications are at TA = 25°C (Note 2). VCC = VBOOST = 12V, VTS = GND = 0V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Gate Driver Supply, VCC
VCC
Operating Voltage
IVCC
DC Supply Current
UVLO
Undervoltage Lockout Threshold
TINP = BINP = 0V
VCC Rising
VCC Falling
Hysteresis
7.2
13.5
V
350
550
µA
l 6.00 6.60 7.20
V
l 5.60 6.15 6.70
V
450
mV
Bootstrapped Supply (BOOST – TS)
IBOOST
DC Supply Current
TINP = BINP = 0V
0.1
2
µA
Rev. C
2
For more information www.analog.com


Part Number LTC4444HMS8E
Description High Voltage Synchronous N-Channel MOSFET
Maker Analog Devices
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