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LTC4365CDDB Datasheet

Undervoltage and Reverse Supply Protection Controller

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LTC4365
FEATURES
Overvoltage,
Undervoltage and Reverse
Supply Protection Controller
DESCRIPTION
n Wide Operating Voltage Range: 2.5V to 34V
n Overvoltage Protection to 60V
n Reverse Supply Protection to –40V
n LTC4365: Blocks 50Hz and 60Hz AC Power
n LTC4365-1: Fast (1ms) Recovery from Fault
n No Input Capacitor or TVS Required for Most
Applications
n Adjustable Undervoltage and Overvoltage
Protection Range
n Charge Pump Enhances External N-Channel MOSFET
n Low Operating Current: 125µA
n Low Shutdown Current: 10µA
n Compact 8-Lead, 3mm × 2mm DFN and
TSOT-23 (ThinSOT™) Packages
nn AEC-Q100 Qualified for Automotive Applications
APPLICATIONS
n Portable Instrumentation
n Industrial Automation
n Laptops
n Automotive Surge Protection
The LTC®4365 protects applications where power supply
input voltages may be too high, too low or even negative.
It does this by controlling the gate voltages of a pair of
external N-channel MOSFETs to ensure that the output
stays within a safe operating range.The LTC4365 can
withstand voltages between –40V and 60V and has an
operating range of 2.5V to 34V, while consuming only
125µA in normal operation.
Two comparator inputs allow configuration of the over-
voltage (OV) and undervoltage (UV) set points using an
external resistive divider. A shutdown pin provides external
control for enabling and disabling the MOSFETs as well
as placing the device in a low current shutdown state. A
fault output provides status of the gate pin pulling low. A
fault is indicated when the part is in shutdown or the input
voltage is outside the UV and OV set points.
The LTC4365 has a 36ms turn-on delay that debounces
live connections and blocks 50Hz to 60Hz AC power. For
fast recovery after faults, the LTC4365-1 has a reduced
1ms turn-on delay.
All registered trademarks and trademarks are the property of their respective owners. Protected
by U.S. patents, including XXXXX, XXXXX.
TYPICAL APPLICATION
12V Automotive Application
VIN
SiSB46DN
VOUT
12V
3A
Load Protected from Reverse and Overvoltage at VIN
UV = 5V
30V OV = 18V
VIN
GATE
VIN
VOUT
510k
LTC4365
2740k
SHDN
UV
FAULT
215k
OV
84.5k
GND
OV = 18V
UV = 5V
4365 TA01a
VALID
WINDOW
GND
VOUT
10V/DIV
VIN
–30V
Document Feedback
For more information www.analog.com
VOUT
1s/DIV
4365 TA01b
Rev. B
1


Analog Devices Semiconductor Electronic Components Datasheet

LTC4365CDDB Datasheet

Undervoltage and Reverse Supply Protection Controller

No Preview Available !

LTC4365
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (Note 1)
VIN........................................................... –40V to 60V
Input Voltages (Note 3)
UV, SHDN............................................... –0.3V to 60V
OV............................................................. –0.3V to 6V
VOUT....................................................... –0.3V to 40V
Output Voltages (Note 4)
FAULT...................................................... –0.3V to 60V
GATE........................................................ –40V to 45V
Input Currents
UV, OV, SHDN.....................................................–1mA
Operating Ambient Temperature Range
LTC4365C................................................. 0°C to 70°C
LTC4365I..............................................–40°C to 85°C
LTC4365H........................................... –40°C to 125°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
for TSOT Only.................................................... 300°C
PIN CONFIGURATION
TOP VIEW
GND 1
8 SHDN
OV 2 9 7 FAULT
UV 3 GND 6 VOUT
VIN 4
5 GATE
DDB PACKAGE
8-LEAD (3mm × 2mm) PLASTIC DFN
TJMAX = 150°C, θJA = 76°C/W
EXPOSED PAD (PIN 9) PCB GROUND CONNECTION OPTIONAL
TOP VIEW
VIN 1
UV 2
OV 3
GND 4
8 GATE
7 VOUT
6 FAULT
5 SHDN
TS8 PACKAGE
8-LEAD PLASTIC TSOT-23
TJMAX = 150°C, θJA = 195°C/W
ORDER INFORMATION
Lead Free Finish
TAPE AND REEL (MINI)
LTC4365CDDB#TRMPBF
LTC4365CDDB-1#TRMPBF
LTC4365IDDB#TRMPBF
LTC4365IDDB-1#TRMPBF
LTC4365HDDB#TRMPBF
LTC4365HDDB-1#TRMPBF
LTC4365CTS8#TRMPBF
LTC4365CTS8-1#TRMPBF
LTC4365ITS8#TRMPBF
LTC4365ITS8-1#TRMPBF
LTC4365HTS8#TRMPBF
LTC4365HTS8-1#TRMPBF
TAPE AND REEL
LTC4365CDDB#TRPBF
LTC4365CDDB-1#TRPBF
LTC4365IDDB#TRPBF
LTC4365IDDB-1#TRPBF
LTC4365HDDB#TRPBF
LTC4365HDDB-1#TRPBF
LTC4365CTS8#TRPBF
LTC4365CTS8-1#TRPBF
LTC4365ITS8#TRPBF
LTC4365ITS8-1#TRPBF
LTC4365HTS8#TRPBF
LTC4365HTS8-1#TRPBF
PART MARKING*
LFKS
LGMB
LFKS
LGMB
LFKS
LGMB
LTFKT
LTGKZ
LTFKT
LTGKZ
LTFKT
LTGKZ
PACKAGE DESCRIPTION
8-Lead (3mm × 2mm) Plastic DFN
8-Lead (3mm × 2mm) Plastic DFN
8-Lead (3mm × 2mm) Plastic DFN
8-Lead (3mm × 2mm) Plastic DFN
8-Lead (3mm × 2mm) Plastic DFN
8-Lead (3mm × 2mm) Plastic DFN
8-Lead Plastic TSOT-23
8-Lead Plastic TSOT-23
8-Lead Plastic TSOT-23
8-Lead Plastic TSOT-23
8-Lead Plastic TSOT-23
8-Lead Plastic TSOT-23
2
For more information www.analog.com
TEMPERATURE RANGE
0°C to 70°C
0°C to 70°C
–40°C to 85°C
–40°C to 85°C
–40°C to 125°C
–40°C to 125°C
0°C to 70°C
0°C to 70°C
–40°C to 85°C
–40°C to 85°C
–40°C to 125°C
–40°C to 125°C
Rev. B


Part Number LTC4365CDDB
Description Undervoltage and Reverse Supply Protection Controller
Maker Analog Devices
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