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Analog Devices Semiconductor Electronic Components Datasheet

LTC4359IS8 Datasheet

Ideal Diode Controller

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LTC4359
Ideal Diode Controller with
Reverse Input Protection
FEATURES
n Reduces Power Dissipation by Replacing a Power
Schottky Diode
n Wide Operating Voltage Range: 4V to 80V
n Reverse Input Protection to – 40V
n Low 9µA Shutdown Current
n Low 150μA Operating Current
n Smooth Switchover without Oscillation
n Controls Single or Back-to-Back N-Channel MOSFETs
n Available in 6-Pin (2mm × 3mm) DFN, 8-Lead MSOP
and 8-Lead SO Packages
n AEC-Q100 Qualified for Automotive Applications
APPLICATIONS
n Automotive Battery Protection
n Redundant Power Supplies
n Supply Holdup
n Telecom Infrastructure
n Computer Systems/Servers
n Solar Systems
DESCRIPTION
The LTC®4359 is a positive high voltage ideal diode control-
ler that drives an external N-channel MOSFET to replace
a Schottky diode. It controls the forward-voltage drop
across the 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. A shutdown mode is available to reduce
the quiescent current to 9μA for load switch and 14µA for
ideal diode applications.
When used in high current diode applications, the LTC4359
reduces power consumption, heat dissipation, voltage loss
and PC board area. With its wide operating voltage range,
the ability to withstand reverse input voltage, and high
temperature rating, the LTC4359 satisfies the demanding
requirements of both automotive and telecom applications.
The LTC4359 also easily ORs power sources in systems
with redundant supplies.
All registered trademarks and trademarks are the property of their respective owners.
TYPICAL APPLICATION
12V, 20A Automotive Reverse-Battery Protection
VIN
12V
SMAT70A
70V
BSC028N06NS
SMAJ24A IN SOURCE
24V
GATE OUT
SHDN
LTC4359
VOUT TO LOAD
47nF
VSS
4359 TA01
1k
Power Dissipation vs Load Current
10
8
SCHOTTKY DIODE (SBG2040CT)
6
4
POWER
SAVED
2
MOSFET (BSC028N06NS)
0
0
5
10
15
20
CURRENT (A)
4359 TA01a
Rev. E
Document Feedback
For more information www.analog.com
1


Analog Devices Semiconductor Electronic Components Datasheet

LTC4359IS8 Datasheet

Ideal Diode Controller

No Preview Available !

LTC4359
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2)
IN, SOURCE, SHDN.................................... –40V to 100V
OUT (Note 3).................................................–2V to 100V
IN – OUT...................................................–100V to 100V
IN – SOURCE..................................................–1V to 80V
GATE – SOURCE (Note 4)..........................–0.3V to +10V
Operating Ambient Temperature Range
LTC4359C................................................. 0°C to 70°C
LTC4359I.............................................. −40°C to 85°C
LTC4359H........................................... −40°C to 125°C
Storage Temperature Range................... −65°C to 150°C
Lead Temperature (Soldering, 10 sec)
MS, SO Packages.............................................. 300°C
PIN CONFIGURATION
TOP VIEW
OUT 1
6 VSS
GATE 2
7
5 SHDN
SOURCE 3
4 IN
DCB PACKAGE
6-LEAD (2mm × 3mm) PLASTIC DFN
TJMAX = 150°C, θJA = 64°C/W
EXPOSED PAD (PIN 7) PCB VSS CONNECTION OPTIONAL
TOP VIEW
GATE 1
SOURCE 2
NC 3
IN 4
8 OUT
7 NC
6 VSS
5 SHDN
MS8 PACKAGE
8-LEAD PLASTIC MSOP
TJMAX = 150°C, θJA = 163°C/W
TOP VIEW
GATE 1
SOURCE 2
NC 3
IN 4
8 OUT
7 NC
6 VSS
5 SHDN
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 130°C/W
ORDER INFORMATION
TAPE AND REEL (MINI) TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC4359CDCB#TRMPBF LTC4359CDCB#TRPBF LFKF
6-Lead (2mm × 3mm) Plastic DFN
0°C to 70°C
LTC4359IDCB#TRMPBF LTC4359IDCB#TRPBF LFKF
6-Lead (2mm × 3mm) Plastic DFN
–40°C to 85°C
LTC4359HDCB#TRMPBF LTC4359HDCB#TRPBF LFKF
6-Lead (2mm × 3mm) Plastic DFN
–40°C to 125°C
TUBE
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC4359CMS8#PBF
LTC4359CMS8#TRPBF LTFKD
8-Lead Plastic MSOP
0°C to 70°C
LTC4359IMS8#PBF
LTC4359IMS8#TRPBF LTFKD
8-Lead Plastic MSOP
–40°C to 85°C
LTC4359HMS8#PBF
LTC4359HMS8#TRPBF LTFKD
8-Lead Plastic MSOP
–40°C to 125°C
LTC4359CS8#PBF
LTC4359CS8#TRPBF
4359
8-Lead Plastic SO
0°C to 70°C
LTC4359IS8#PBF
LTC4359IS8#TRPBF
4359
8-Lead Plastic SO
–40°C to 85°C
LTC4359HS8#PBF
LTC4359HS8#TRPBF
4359
8-Lead Plastic SO
–40°C to 125°C
AUTOMOTIVE PRODUCTS**
LTC4359IMS8#WPBF
LTC4359IMS8#WTRPBF LTFKD
8-Lead Plastic MSOP
–40°C to 85°C
LTC4359HMS8#WPBF LTC4359HMS8#WTRPBF LTFKD
8-Lead Plastic MSOP
–40°C to 125°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.
Rev. E
2
For more information www.analog.com


Part Number LTC4359IS8
Description Ideal Diode Controller
Maker Analog Devices
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