LTC4441/LTC4441-1
N-Channel MOSFET
Gate Driver
Fea T Descrip T
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6A Peak Output Current The LTC 4441/LTC4441-1 is an N-channel MOSFET gate
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Wide V Supply Range: 5V to 25V driver that can supply up to 6A of peak output current.
IN
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Adjustable Gate Drive Voltage: 5V to 8V The chip is designed to operate with a supply voltage of
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Logic Input Can Be Driven Below Ground up to 25V and has an adjustable linear regulator for the
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30ns Propagation Delay gate drive. The gate drive voltage can be programmed
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Supply Independent CMOS/TTL Input Thresholds between 5V and 8V.
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Undervoltage Lockout
The LTC4441/LTC4441-1 features a logic threshold driver
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Low Shutdown Current: <12A
input. This input can be driven below ground or above the
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Overtemperature Protection
driver supply. A dual function control input is provided to
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Adjustable Blanking Time for MOSFETs
disable the driver or to force the chip into shutdown mode
Current Sense Signal (LTC4441)
with <12A of supply current. Undervoltage lockout and
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Available in SO-8 and 10-Lead MSOP
overtemperature protection circuits will disable the driver
(Exposed Pad) Packages
output when activated. The LTC4441 also comes with an
open-drain output that provides adjustable leading edge
blanking to prevent ringing when sensing the source cur-
a T
rent of the power MOSFETs.
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Power Supplies
The LTC4441 is available in a thermally enhanced 10-lead
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Motor/Relay Control
MSOP package. The LTC4441-1 is the SO-8 version without
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Line Drivers
the blanking function.
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Charge Pumps
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Protected by U.S. Patents including 6677210.
Typical a T
D1
L1
MBR10100
10H 20A
V
OUT
V
IN
RISE/FALL Time vs C
LOAD
52V
6V TO 24V
+ +
22F
2A
200
25V C
OUT T = 25C
A
R1
X7R
R5 180
DRV = 5V
CC
330k
V
IN
FB DRV
CC
160
C
VCC
R2
SHUTDOWN
Q2 R6
10F
86.6k 140
X5R
Si7370
SGND
OUT
120
2
LTC4441
100
EN/SHDN
RISE TIME
R3
80
5m
R7
LTC3803
RBLANK
PGND 60
SWITCHING
CONTROLLER 40
FALL TIME
GATE IN BLANK R4
20
100
+
SENSE 0
0 5 10 15 20 25 30 35 40 45 50
GND
R8 C (nF)
LOAD
511k
4441 TA01b
FB
R9
8.06k
4441 TA01a
44411fa
1
RISE/FALL TIME (ns)
ion pplica
ions pplica
ion uresLTC4441/LTC4441-1
(Notes 1, 8)
a Te Maxi Mu M r a T
Supply Voltage OUT Output Current ............................................ 100mA
V ............................................................................28V Operating Junction Temperature Range
IN
DRV .........................................................................9V (Note 2) .................................................. 55C to 125C
CC
Input Voltage Storage Temperature Range .................. 65C to 150C
IN .............................................................15V to 15V Lead Temperature (Soldering, 10 sec) .................. 300C
FB, EN/SHDN ..........................0.3V to DRV + 0.3V
CC
RBLANK, BLANK (LTC4441 Only)............ 0.3V to 5V
p in c F T
TOP VIEW
TOP VIEW
PGND 1 10 OUT PGND 1 8 OUT
BLANK 2 9 DRV
CC
SGND 2 7 DRV
CC
RBLANK 3 11 8 V
IN
SGND 4 7 FB
IN V
3 6
IN
IN 5 6 EN/SHDN
EN/SHDN FB
4 5
MSE PACKAGE
10-LEAD PLASTIC MSOP
S8 PACKAGE
T = 125C, = 38C/W (Note 3)
JMAX JA
8-LEAD PLASTIC SO
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
T = 125C, = 150C/W
JMAX JA
o r Der i n F Ma T
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC4441EMSE#PBF LTC4441EMSE#TRPBF LTBJQ 10-Lead Plastic MSOP 40C to 125C
LTC4441IMSE#PBF LTC4441IMSE#TRPBF LTBJP 10-Lead Plastic MSOP 40C to 125C
LTC4441MPMSE#PBF LTC4441MPMSE#TRPBF LTBJP 10-Lead Plastic MSOP 55C to 125C
LTC4441ES8-1#PBF LTC4441ES8-1#TRPBF 44411 8-Lead Plastic SO 40C to 125C
LTC4441IS8-1#PBF LTC4441IS8-1#TRPBF 4441I1 8-Lead Plastic SO 40C to 125C
LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC4441EMSE LTC4441EMSE#TR LTBJQ 10-Lead Plastic MSOP 40C to 125C
LTC4441IMSE LTC4441IMSE#TR LTBJP 10-Lead Plastic MSOP 40C to 125C
LTC4441MPMSE LTC4441MPMSE#TR LTBJP 10-Lead Plastic MSOP 55C to 125C
LTC4441ES8-1 LTC4441ES8-1#TR 44411 8-Lead Plastic SO 40C to 125C
LTC4441IS8-1 LTC4441IS8-1#TR 4441I1 8-Lead Plastic SO 40C to 125C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: