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Linear Technology Electronic Components Datasheet

LTC4440EMS8E-5 Datasheet

High Speed High Voltage High Side Gate Driver

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Features
n Wide Operating VIN Range: Up to 60V
n Rugged Architecture Tolerant of 80V VIN Transients
n Powerful 1.85Ω Driver Pull-Down (with 6V Supply)
n Powerful 1.1A Peak Current Driver Pull-Up
(with 6V Supply)
n 7ns Fall Time Driving 1000pF Load
n 10ns Rise Time Driving 1000pF Load
n Drives Standard Threshold MOSFETs
n TTL/CMOS Compatible Inputs with Hysteresis
n Input Thresholds are Independent of Supply
n Undervoltage Lockout
n Low Profile (1mm) SOT-23 (ThinSOT™) and
Thermally Enhanced 8-Pin MSOP Packages
Applications
n Telecommunications Power Systems
n Distributed Power Architectures
n Server Power Supplies
n High Density Power Modules
n General Purpose Low-Side Driver
L, LT, LTC, LTM, Linear Technology, the Linear logo and PolyPhase are registered trademarks
and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners. Protected by U.S. Patents, including 6677210.
LTC4440-5
High Speed, High Voltage,
High Side Gate Driver
Description
The LTC®4440-5 is a high frequency high side N-channel
MOSFET gate driver that is designed to operate in appli-
cations with VIN voltages up to 60V. The LTC4440-5 can
also withstand and continue to function during 80V VIN
transients. The powerful driver capability reduces switch-
ing losses in MOSFETs with high gate capacitances. The
LTC4440-5’s pull-up has a peak output current of 1.1A and
its pull-down has an output impedance of 1.85Ω.
The LTC4440-5 features supply independent TTL/CMOS
compatible input thresholds with 350mV of hysteresis.
The input logic signal is internally level-shifted to the
bootstrapped supply, which may function at up to 95V
above ground.
The LTC4440-5 is optimized for driving (5V) logic level
FETs and contains an undervoltage lockout circuit that
disables the external MOSFET when activated.
The LTC4440-5 is available in the low profile (1mm)
SOT-23 or a thermally enhanced 8-lead MSOP package.
PARAMETER
Max Operating TS
Absolute Max TS
MOSFET Gate Drive
VCC UV+
VCC UV
LTC4440-5
60V
80V
4V to 15V
3.2V
3.04V
LTC4440A-5
80V
100V
4V to 15V
3.2V
3.04V
LTC4440
80V
100V
8V to 15V
6.3V
6.0V
Typical Application
Synchronous Phase-Modulated Full-Bridge Converter
VIN
36V TO 60V
VCC
4V TO 15V
LTC4440-5
VCC BOOST
INP TG
GND TS
LTC3722-1
LTC4440-5
VCC BOOST
INP TG
GND TS
••
4440 TA01
LTC4440-5 Driving a 1000pF Capacitive Load
TG-TS
2V/DIV
INP
2V/DIV
50ns/DIV
VCC = BOOST-TS = 5V
4440-5 TA02
For more information www.linear.com//LTC4440-5
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Linear Technology Electronic Components Datasheet

LTC4440EMS8E-5 Datasheet

High Speed High Voltage High Side Gate Driver

No Preview Available !

LTC4440-5
Absolute Maximum Ratings (Note 1)
Supply Voltage
VCC ........................................................ –0.3V to 15V
BOOST – TS............................................ –0.3V to 15V
INP Voltage................................................. –0.3V to 15V
BOOST Voltage (Continuous)...................... –0.3V to 85V
BOOST Voltage (100ms)............................. –0.3V to 95V
TS Voltage (Continuous)................................ –5V to 70V
TS Voltage (100ms)....................................... –5V to 80V
Peak Output Current < 1µs (TG)...................................4A
Operating Ambient Temperature Range
(Note 2)................................................–40°C to 85°C
Junction Temperature (Note 3).............................. 125°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................... 300°C
Pin Configuration
TOP VIEW
INP 1
8 TS
GND 2
VCC 3
9
7 TG
6 BOOST
GND 4
5 NC
MS8E PACKAGE
8-LEAD PLASTIC MSOP
TJMAX = 125°C, θJA = 40°C/W
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
VCC 1
GND 2
INP 3
TOP VIEW
6 BOOST
5 TG
4 TS
S6 PACKAGE
6-LEAD PLASTIC SOT-23
TJMAX = 125°C, θJA = 230°C/W
Order Information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC4440EMS8E-5#PBF LTC4440EMS8E-5#TRPBF LTBRG
8-Lead Plastic MSOP
LTC4440ES6-5#PBF
LTC4440ES6-5#TRPBF LTBRF
6-Lead Plastic SOT-23
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on nonstandard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 85°C
Electrical Characteristics The denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = VBOOST = 6V, VTS = GND = 0V, unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
Main Supply (VCC)
IVCC
DC Supply Current
Normal Operation
UVLO
UVLO Undervoltage Lockout Threshold
INP = 0V
VCC < UVLO Threshold (Falling) – 0.1V
VCC Rising
VCC Falling
Hysteresis
200 325
18
40
l 2.75 3.20 3.65
l 2.60 3.04 3.50
160
Bootstrapped Supply (BOOST – TS)
IBOOST
DC Supply Current
Normal Operation
INP = 0V
INP = 6V
0
310 450
UNITS
µA
µA
V
V
mV
µA
µA
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For more information www.linear.com/LTC4440-5


Part Number LTC4440EMS8E-5
Description High Speed High Voltage High Side Gate Driver
Maker Linear
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