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LTC4360CSC8-2 Datasheet

Overvoltage Protection Controller

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LTC4360-1/LTC4360-2
Overvoltage Protection Controller
FEATURES
nn 2.5V to 5.5V Operation
nn Overvoltage Protection Up to 80V
nn No Input Capacitor or TVS Required for Most
Applications
nn 2% Accurate 5.8V Overvoltage Threshold
nn <1µs Overvoltage Turn-Off, Gentle Shutdown
nn Controls N-Channel MOSFET
nn Adjustable Power-Up dV/dt Limits Inrush
nn Reverse Voltage Protection (LTC4360-2)
nn Power Good Output
nn Low Current Shutdown (LTC4360-1)
nn Available in a Tiny 8-Lead SC70 Package
APPLICATIONS
nn USB Protection
nn Handheld Computers
nn Cell/Smart Phones
nn MP3/MP4 Players
nn Digital Cameras
All registered trademarks and trademarks are the property of their respective owners.
DESCRIPTION
The LTC®4360 overvoltage protection controller safe-
guards 2.5V to 5.5V systems from power supply over-
voltage. It is designed for portable devices with multiple
power supply options including wall adaptors, car battery
adaptors and USB ports.
The LTC4360 controls an external N-channel MOSFET in
series with the input power supply. During overvoltage
transients, the LTC4360 turns off the MOSFET within 1µs,
isolating downstream components from the input supply.
Inductive cable transients are absorbed by the MOSFET
and load capacitance. In most applications, the LTC4360
provides protection from transients up to 80V without
requiring transient voltage suppressors or other external
components.
The LTC4360 has a delayed start-up and an adjustable
dV/dt ramp-up for inrush current limiting. A PWRGD pin
provides power good monitoring for VIN. Following an
overvoltage condition, the LTC4360 automatically restarts
with a start-up delay. The LTC4360-1 features a soft shut-
down controlled by the ON pin, while the LTC4360-2 con-
trols an optional external P-channel MOSFET for negative
voltage protection.
TYPICAL APPLICATION
Protection from Overvoltage
VIN
Si1470DH
5V
GATE
IN
OUT
LTC4360-1
VOUT
5V
1.5A
COUT
ON PWRGD
GND
436012 TA01a
Output Protected from Overvoltage at Input
VIN
VIN, VOUT
5V/DIV
VGATE
10V/DIV
VOUT
Si1470DH
COUT = 10µF
0.5µs/DIV
436012 TA01b
Rev B
Document Feedback
For more information www.analog.com
1


Analog Devices Semiconductor Electronic Components Datasheet

LTC4360CSC8-2 Datasheet

Overvoltage Protection Controller

No Preview Available !

LTC4360-1/LTC4360-2
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2)
Bias Supply Voltage (IN)............................. –0.3V to 85V
Input Voltages
OUT, ON.................................................... –0.3V to 9V
Output Voltages
PWRGD..................................................... –0.3V to 9V
GATE (Note 3)......................................... –0.3V to 15V
GATEP..................................................... –0.3V to 85V
IN to GATEP............................................ –0.3V to 10V
Operating Temperature Range
LTC4360C................................................. 0°C to 70°C
LTC4360I..............................................–40°C to 85°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................... 300°C
PIN CONFIGURATION
LTC4360-1
TOP VIEW
IN 1
GND 2
GND 3
GND 4
8 GATE
7 OUT
6 ON
5 PWRGD
SC8 PACKAGE
8-LEAD PLASTIC SC70
TJMAX = 125°C, θJA = 270°C/W
LTC4360-2
TOP VIEW
IN 1
GND 2
GND 3
GND 4
8 GATEP
7 GATE
6 OUT
5 PWRGD
SC8 PACKAGE
8-LEAD PLASTIC SC70
TJMAX = 125°C, θJA = 270°C/W
ORDER INFORMATION
Lead Free Finish
TAPE AND REEL (MINI)
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC4360CSC8-1#TRMPBF LTC4360CSC8-1#TRPBF LDXN
8-Lead Plastic SC70
0°C to 70°C
LTC4360CSC8-2#TRMPBF LTC4360CSC8-2#TRPBF LDXP
8-Lead Plastic SC70
0°C to 70°C
LTC4360ISC8-1#TRMPBF LTC4360ISC8-1#TRPBF LDXN
8-Lead Plastic SC70
–40°C to 85°C
LTC4360ISC8-2#TRMPBF LTC4360ISC8-2#TRPBF LDXP
8-Lead Plastic SC70
–40°C to 85°C
TRM = 500 pieces. *Temperature grades are identified by a label on the shipping container.
Consult ADI Marketing for parts specified with wider operating temperature ranges.
Consult ADI Marketing for information on lead based finish parts.
Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
Rev B
2
For more information www.analog.com


Part Number LTC4360CSC8-2
Description Overvoltage Protection Controller
Maker Analog Devices
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LTC4360CSC8-2 Datasheet PDF






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