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Linear Technology Electronic Components Datasheet

LTC4358CDE Datasheet

5A Ideal Diode

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FEATURES
n Replaces a Power Schottky Diode
n Internal 20mΩ N-Channel MOSFET
n 0.5μs Turn-Off Time Limits Peak Fault Current
n Operating Voltage Range: 9V to 26.5V
n Smooth Switchover without Oscillation
n No Reverse DC Current
n Available in 14-Pin (4mm × 3mm) DFN and
16-Lead TSSOP Packages
APPLICATIONS
n N+1 Redundant Power Supplies
n High Availability Systems
n Telecom Infrastructure
n Automotive Systems
LTC4358 www.DataSheet4U.com
5A Ideal Diode
DESCRIPTION
The LTC®4358 is a 5A ideal diode that uses an internal
20mΩ N-channel MOSFET to replace a Schottky diode
when used in diode-OR and high current diode applica-
tions. The LTC4358 reduces power consumption, heat
dissipation, and PC board area.
The LTC4358 easily ORs power supplies together to in-
crease total system reliability. In diode-OR applications,
the LTC4358 regulates the forward voltage drop across
the internal MOSFET to ensure smooth current transfer
from one path to the other without oscillation. If the power
source fails or is shorted, a fast turnoff minimizes reverse
current transients.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
12V, 5A Diode-OR
VINA = 12V
IN
DRAIN
OUT
LTC4358
VDD
GND
VINB = 12V
IN
DRAIN
LTC4358
GND
OUT
VDD
4358 TA01
VOUT TO
5A LOAD
Power Dissipation vs Load Current
3.0
2.5
DIODE (B530C)
2.0
1.5
POWER SAVED
1.0
0.5
0
0
FET (LTC4358)
2
4
6
8
CURRENT (A)
4358 TA01b
4358fa
1


Linear Technology Electronic Components Datasheet

LTC4358CDE Datasheet

5A Ideal Diode

No Preview Available !

LTC4358
www.DataSheet4U.com
ABSOLUTE MAXIMUM RATINGS (Notes 1, 2)
Supply Voltages
IN, OUT, VDD, DRAIN Voltage................. –0.3V to 28V
Output Voltage
GATE (Note 3).......................... VIN – 0.2V to VIN + 6V
Operating Ambient Temperature Range
LTC4358C ................................................ 0°C to 70°C
LTC4358I.............................................. –40°C to 85°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
FE Package ....................................................... 300°C
PIN CONFIGURATION
TOP VIEW
IN 1
IN 2
IN 3
IN 4
GATE 5
NC 6
GND 7
15
DRAIN
14 IN
13 IN
12 IN
11 IN
10 NC
9 OUT
8 VDD
DE PACKAGE
14-LEAD (4mm s 3mm) PLASTIC DFN
TJMAX = 125°C, θJC = 4°C/W, θJA = 43°C/W
TOP VIEW
IN 1
IN 2
IN 3
IN 4
NC 5
GATE 6
NC 7
GND 8
17
DRAIN
16 IN
15 IN
14 IN
13 IN
12 IN
11 NC
10 OUT
9 VDD
FE PACKAGE
16-LEAD PLASTIC TSSOP
TJMAX = 125°C, θJC = 10°C/W, θJA = 38°C/W
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC4358CDE#PBF
LTC4358CDE#TRPBF
4358
14-Lead (4mm × 3mm) Plastic DFN 0°C to 70°C
LTC4358IDE#PBF
LTC4358IDE#TRPBF
4358
14-Lead (4mm × 3mm) Plastic DFN –40°C to 85°C
LTC4358CFE#PBF
LTC4358CFE#TRPBF
4358FE
16-Lead Plastic TSSOP
0°C to 70°C
LTC4358IFE#PBF
LTC4358IFE#TRPBF
4358FE
16-Lead Plastic TSSOP
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *Temperature grades are identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard 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/
4358fa
2


Part Number LTC4358CDE
Description 5A Ideal Diode
Maker Linear
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