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LTC4376IDHD Datasheet

7A Ideal Diode

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LTC4376
7A Ideal Diode with
Reverse Input Protection
FEATURES
nn Reduces Power Dissipation by Replacing a Power
Schottky Diode
nn Wide Operating Voltage Range: 4V to 40V
nn Internal 15mΩ N-Channel MOSFET
nn Reverse Input Protection to –40V
nn Low 9μA Shutdown Current
nn Low 150μA Operating Current
nn Smooth Switchover without Oscillation
nn Available in 16-Pin 5mm x 4mm DFN Package
APPLICATIONS
nn Automotive Battery Protection
nn Redundant Power Supplies
nn Portable Battery Devices
nn Computer Systems/Servers
DESCRIPTION
The LTC®4376 is a 7A ideal diode that uses an internal
15mΩ N-channel MOSFET to replace a Schottky diode
when used in diode-OR and high current diode applica-
tions. The LTC4376 reduces power consumption, heat
dissipation and PC board area.
The LTC4376 controls the forward voltage drop across
the internal MOSFET to ensure smooth current delivery
without oscillation even at light loads. If a power source
fails or is shorted, a fast turn-off minimizes reverse cur-
rent transients. The LTC4376 also easily ORs power
sources to increase total system reliability.
With its low operating voltage, small solution size and the
ability to withstand reverse input voltage, the LTC4376
excels in portable battery applications. A shutdown mode
is available to reduce the quiescent current to 9μA. The
SHDN pin can also control the forward current path when
an external MOSFET is used in series with the internal
MOSFET in a back-to-back configuration.
All registered trademarks and trademarks are the property of their respective owners.
TYPICAL APPLICATION
12V, 7A Ideal Diode
LTC4376
VIN
IN
12V
CS
INK
SHDN
VSS
OUT
OUTK
VOUT
12V
7A
4376 TA01a
Power Dissipation vs Load Current
4
3
SCHOTTKY
MBR1045CT
2
POWER
SAVED
1
LTC4376
0
01234567
CURRENT (A)
4376 TA01b
Rev 0
Document Feedback
For more information www.analog.com
1


Analog Devices Semiconductor Electronic Components Datasheet

LTC4376IDHD Datasheet

7A Ideal Diode

No Preview Available !

LTC4376
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2)
IN, INK, CS, SHDN....................................... –40V to 80V
OUT, OUTK.................................................. –0.3V to 80V
INK–OUTK.................................................. –45V to 100V
INK–CS...........................................................–1V to 80V
IN–OUT (Note 3)......................................... –45V to 0.3V
GATE (Note 4)............................ VCS – 0.3V to VCS + 10V
Operating Junction Temperature Range
LTC4376C................................................. 0°C to 70°C
LTC4376I..............................................–40°C to 85°C
LTC4376H........................................... –40°C to 125°C
Storage Temperature Range................... –65°C to 150°C
PIN CONFIGURATION
TOP VIEW
IN 1
IN 2
IN 3
IN 4
NC 5
VSS 6
OUTK 7
GATE 8
16 IN
15 IN
14 IN
17
13 IN
OUT
12 SHDN
11 NC
10 INK
9 CS
DHD PACKAGE
16-LEAD (5mm × 4mm) PLASTIC DFN
TJMAX = 150°C, θJA = 43°C/W, θJC = 4.3°C/W
MSL RATING 3
ORDER INFORMATION
TUBE
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC4376CDHD#PBF
LTC4376CDHD#TRPBF 4376
16-Lead (5mm x 4mm) Plastic DFN
0°C to 70°C
LTC4376IDHD#PBF
LTC4376IDHD#TRPBF 4376
16-Lead (5mm x 4mm) Plastic DFN
–40°C to 85°C
LTC4376HDHD#PBF
LTC4376HDHD#TRPBF 4376
16-Lead (5mm x 4mm) Plastic DFN
–40°C to 125°C
Contact the factory for parts specified with wider operating temperature ranges.
Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VINK = 4V to 40V, VIN = VINK, unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VINK
Operating Supply Range
IINK
INK Pin Current
INK = 12V
INK = OUTK = 12V, SHDN = 0V
INK = OUTK = 24V, SHDN = 0V
INK = –40V
l
4
40
V
l
150
250
µA
l
9
30
µA
l
15
40
µA
l
0
–15
–40
µA
IOUTK
OUTK Pin Current
INK = 12V, In Regulation
INK = 12V, ∆VSD = –1V
INK = OUTK = 12V, SHDN = 0V
INK = OUTK = 24V, SHDN = 0V
OUTK = 12V, INK = SHDN = 0V
l
3
5
7.5
µA
l
120
220
µA
l
0.8
3
µA
l
0.8
3
µA
l
6
15
µA
ICS
CS Pin Current
INK = 12V, ∆VSD = –1V
INK = CS = 12V, SHDN = 0V
CS = –40V
l
150
200
µA
l
1
4
15
µA
l –0.4 –0.8 –1.5
mA
IOUT
∆VGATE
∆VSD(REG)
OUT Reverse Leakage Current
IN = GATE = 0V, OUT = 40V
Gate Drive (VGATE – VCS)
INK = 4V, IGATE = 0, –1µA
INK = 8V to 40V, IGATE = 0, –1µA
Source-Drain Regulation Voltage (VINK – VOUTK) 1mA < IIN < 100mA
l
150
µA
l 4.5
5.5
18
V
l 10
12
18
V
l 20
30
45
mV
Rev 0
2
For more information www.analog.com


Part Number LTC4376IDHD
Description 7A Ideal Diode
Maker Analog Devices
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