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LTC4440IMS8E#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
LTC4440
1
4440fb
For more information www.linear.com/LTC4440
TYPICAL APPLICATION
Synchronous Phase-Modulated Full-Bridge Converter
LTC4440 Driving a 1000pF
Capacitive Load
V
CC
INP
GND
BOOST
TG
TS
LTC4440
V
IN
36V TO 72V
100V PEAK TRANSIENT
(ABS MAX)
V
CC
8V TO 15V
V
CC
INP
GND
BOOST
TG
TS
LTC4440
V
CC
LTC3722-1
• •
4440 TA01
10ns/DIV
INPUT
(INP)
2V/DIV
OUTPUT
(TG – TS)
5V/DIV
4440 F02
FEATURES DESCRIPTION
High Speed, High Voltage
High Side Gate Driver
The LT C
®
4440 is a high frequency high side N-channel
MOSFET gate driver that is designed to operate in ap-
plications with
V
IN
voltages up to 80V. The LTC4440 can
also withstand and continue to function during 100V V
IN
transients. The powerful driver capability reduces switch-
ing losses
in MOSFETs with high gate capacitances. The
LTC4440’s
pull-up has a peak output current of 2.4A and
its pull-down has an output impedance of 1.5Ω.
The LTC4440 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 115V
above ground.
The LTC4440 contains both high side and low side under
-
voltage lockout circuits that disable the external MOSFET
when activated.
The LTC4440 is available in the low profile (1mm) SOT-23
and thermally enhanced 8-lead MSOP packages.
PARAMETER LTC4440 LTC4440-5 LTC4440A-5
Max Operating TS 80V 60V 80V
Absolute Max TS 100V 80V 100V
MOSFET Gate Drive 8V to 15V 4V to 15V 4V to 15V
V
CC
UV
+
6.3V 3.2V 3.2V
V
CC
UV
–
6.0V 3.04V 3.04V
APPLICATIONS
n
Wide Operating V
IN
Range: Up to 80V
n
Rugged Architecture Tolerant of 100V V
IN
Transients
n
Powerful 1.5Ω Driver Pull-Down
n
Powerful 2.4A Peak Current Driver Pull-Up
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
n
Telecommunications Power Systems
n
Distributed Power Architectures
n
Server Power Supplies
n
High Density Power Modules
L, LT , LT C , LTM , Linear Technology and the Linear logo 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
2
4440fb
For more information www.linear.com/LTC4440
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Supply Voltage
V
CC
........................................................ – 0.3V to 15V
BOOST – TS ........................................... –0.3V to 15V
INP Voltage ................................................ –0.3V to 15V
BOOST Voltage (Continuous) ..................... –0.3V to 95V
BOOST Voltage (100ms) ...........................–0.3V to 115V
TS Voltage (Continuous) ............................... –5V to 80V
TS Voltage (100ms) .................................... –5V to 100V
Peak Output Current < 1µs (TG) ................................. 4A
Driver Output TG (with Respect to TS) ....... –0.3V to 15V
Operating Temperature Range (Note 2)
LTC4440E ...........................................–40°C to 85°C
LTC4440I .......................................... –40°C to 125°C
Junction Temperature (Note 3) ............................ 125°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec) ................... 300°C
1
2
3
4
INP
GND
V
CC
GND
8
7
6
5
TS
TG
BOOST
NC
TOP VIEW
9
MS8E PACKAGE
8-LEAD PLASTIC MSOP
T
JMAX
= 125°C, θ
JA
= 40°C/W (NOTE 4)
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
V
CC
1
GND 2
INP 3
6 BOOST
5 TG
4 TS
TOP VIEW
S6 PACKAGE
6-LEAD PLASTIC SOT-23
T
JMAX
= 125°C, θ
JA
= 230°C/W
PIN CONFIGURATION
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC4440EMS8E#PBF LTC4440EMS8E#TRPBF LT F 9 8-Lead Plastic MSOP –40°C to 85°C
LTC4440IMS8E#PBF LTC4440IMS8E#TRPBF LT F 9 8-Lead Plastic MSOP –40°C to 125°C
LTC4440ES6#PBF LTC4440ES6#TRPBF LTZY 6-Lead Plastic SOT-23 –40°C to 85°C
LTC4440IS6#PBF LTC4440IS6#TRPBF LTZY 6-Lead Plastic SOT-23 –40°C to 125°C
Consult LT C Marketing for parts specified with wider operating temperature ranges.
Consult LT C
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/
LTC4440
3
4440fb
For more information www.linear.com/LTC4440
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Main Supply (V
CC
)
I
VCC
DC Supply Current
Normal Operation
UVLO
INP = 0V
V
CC
< UVLO Threshold (Falling) – 0.1V
250
25
400
80
µA
µA
UVLO Undervoltage Lockout Threshold V
CC
Rising
V
CC
Falling
Hysteresis
l
l
5.7
5.4
6.5
6.2
300
7.3
7.0
V
V
mV
Bootstrapped Supply (BOOST – TS)
I
BOOST
DC Supply Current
Normal Operation
UVLO
INP = 0V
V
BOOST
– V
TS
< UVLO
HS(FALLING)
– 0.1V, V
CC
= INP = 5V
110
86
180
170
µA
µA
UVLO
HS
Undervoltage Lockout Threshold V
BOOST
– V
TS
Rising
V
BOOST
– V
TS
Falling
Hysteresis
l
l
6.75
6.25
7.4
6.9
500
7.95
7.60
V
V
mV
Input Signal (INP)
V
IH
High Input Threshold INP Ramping High
l
1.3 1.6 2 V
V
IL
Low Input Threshold INP Ramping Low
l
0.85 1.25 1.6 V
V
IH
– V
IL
Input Voltage Hysteresis 0.350 V
I
INP
Input Pin Bias Current ±0.01 ±2 µA
Output Gate Driver (TG)
V
OH
High Output Voltage I
TG
= –10mA, V
OH
= V
BOOST
– V
TG
0.7 V
V
OL
Low Output Voltage I
TG
= 100mA:
0°C ≤ T
A
≤ 85°C
–40°C ≤ T
A
≤ 125°C
l
l
150
150
220
300
mV
mV
I
PU
Peak Pull-Up Current 0°C ≤ T
A
≤ 85°C
–40°C ≤ T
A
≤ 125°C
l
l
1.7
1.5
2.4
2.4
A
A
R
DS
Output Pull-Down Resistance 0°C ≤ T
A
≤ 85°C
–40°C ≤ T
A
≤ 125°C
l
l
1.5
1.5
2.2
3
Ω
Ω
Switching T
iming
t
r
Output Rise Time 10% – 90%, C
L
= 1nF
10% – 90%, C
L
= 10nF
10
100
ns
ns
t
f
Output Fall Time 10% – 90%, C
L
= 1nF
10% – 90%, C
L
= 10nF
7
70
ns
ns
t
PLH
Output Low-High Propagation Delay 0°C ≤ T
A
≤ 85°C
–40°C ≤ T
A
≤ 125°C
l
l
30
30
65
75
ns
ns
t
PHL
Output High-Low Propagation Delay 0°C ≤ T
A
≤ 85°C
–40°C ≤ T
A
≤ 125°C
l
l
28
28
65
75
ns
ns
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= V
BOOST
= 12V, V
TS
= GND = 0V, unless otherwise noted.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC4440E is guaranteed to meet performance specifications
from 0°C to 70°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls. The LTC4440I is guaranteed and tested
over the –40°C to 125°C operating temperature range.
Note 3: T
J
is calculated from the ambient temperature T
A
and power
dissipation PD according to the following formula:
T
J
= T
A
+ (PD • θ
JA
°C/W)
Note 4: Failure to solder the exposed back side of the MS8E package to the
PC board will result in a thermal resistance much higher than 40°C/W.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

LTC4440IMS8E#TRPBF

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Manufacturer:
Analog Devices / Linear Technology
Description:
Gate Drivers High & Low-Side Driver
Lifecycle:
New from this manufacturer.
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