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LTC4368HDD Datasheet

100V UV/OV and Reverse Protection Controller

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LTC4368
100V UV/OV and Reverse Protection
Controller with Bidirectional Circuit Breaker
FEATURES
nn Wide Operating Voltage Range: 2.5V to 60V
nn Overvoltage Protection to 100V
nn Reverse Supply Protection to –40V
nn Bidirectional Electronic Circuit Breaker:
nn +50mV Forward Sense Threshold
nn –50mV Reverse (LTC4368-1)
nn –3mV Reverse (LTC4368-2)
nn Adjustable ±1.5% Undervoltage and Overvoltage
Thresholds
nn Low Operating Current: 80µA
nn Low Shutdown Current: 5µA
nn Controls Back-to-Back N-Channel MOSFETs
nn Blocks 50Hz and 60Hz AC Power
nn Hot Swappable Supply Input
nn Pin-Selectable Overcurrent Auto-Retry Timer or Latchoff
nn 10-Pin MSOP and 3mm × 3mm DFN Packages
nn AEC-Q100 Qualified for Automotive Applications
APPLICATIONS
nn Reverse Battery Protection
nn Portable Instrumentation
nn Automotive and Industrial Surge Protection
nn Energy Storage Systems
DESCRIPTION
The LTC®4368 protects applications from power supply
voltages that may be too high, too low, or even negative
and from overcurrent faults in both forward and reverse
directions. The LTC4368 controls the gate voltage of a pair
of external N-channel MOSFETs to ensure that the load
is connected to the input supply only when there are no
voltage or current faults.
Two comparator inputs allow configuration of the over-
voltage (OV) and undervoltage (UV) set points using an
external resistive divider. A current sense resistor sets the
forward and reverse circuit breaker current thresholds.
After a forward current fault, the LTC4368 will either latch-
off power, or retry after a user adjustable delay. After a
reverse current fault, the LTC4368 waits for the output to
fall 100mV below the input to reconnect power to the load.
The LTC4368 has a 32ms turn-on delay that debounces
live supply input connections and blocks 50Hz and 60Hz
AC power. UV/OV faults also trigger the 32ms recovery
delay before the external MOSFETs are turned back on.
All registered trademarks and trademarks are the property of their respective owners.
TYPICAL APPLICATION
24V Application with 10A Circuit Breaker
VIN –40V TO 100V SiR870
24V
INRUSH
CONTROL
22k
SiR870
+50mV
0.005Ω
–3mV
VOUT
7V TO 36V
+
IOUT
–0.6A TO 10A
100µF
Load Protected from Reverse and Overvoltage at VIN
+70V
20V/DIV
OV = 36V
UV = 7V
VIN
OV = 36V
UV = 7V
3.3nF
464k
1500k
121k
GATE
VIN
SENSE VOUT
SHDN
UV
LTC4368-2
FAULT
OV
29.4k
RETRY
GND
1200ms COOLDOWN
AFTER FORWARD
OC FAULT
0.22µF
4368 TA01a
VALID WINDOW
GND
VOUT
–40V
20V/DIV VIN
200ms/DIV
VOUT
4368 TA01b
Rev. B
Document Feedback
For more information www.analog.com
1


Analog Devices Semiconductor Electronic Components Datasheet

LTC4368HDD Datasheet

100V UV/OV and Reverse Protection Controller

No Preview Available !

LTC4368
ABSOLUTE MAXIMUM RATINGS
(Note 1, Note 2)
Supply Voltage
VIN......................................................... –40V to 100V
Input Voltages
UV, SHDN (Note 3).........................…….–0.3V to 80V
OV (Note 3)............................................. –0.3V to 20V
RETRY (Note 3)........................................ –0.3V to 5V
VOUT, SENSE.............................................–10V to 80V
VOUT to SENSE..........................................–10V to 10V
VIN to VOUT............................................ –60V to 100V
Output Voltages
FAULT (Note 3)........................................ –0.3V to 80V
GATE............................................... –40V to VIN + 14V
Input Currents
RETRY, UV, OV ,SHDN, FAULT............................–1mA
Operating Ambient Temperature Range
LTC4368C................................................ 0°C to 70°C
LTC4368I............................................. –40°C to 85°C
LTC4368H......................................... . –40°C to 125°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
MSOP Package.................................................. 300°C
PIN CONFIGURATION
TOP VIEW
VIN 1
UV 2
OV 3
RETRY 4
GND 5
10 GATE
9 SENSE
8 VOUT
7 FAULT
6 SHDN
DD PACKAGE
10-LEAD (3mm × 3mm) PLASTIC DFN
EXPOSED PAD (PIN 11) PCB GROUND CONNECTION OPTIONAL
TJMAX = 150°C, θJA = 43°C/W
VIN 1
UV 2
OV 3
RETRY 4
GND 5
TOP VIEW
10 GATE
9 SENSE
8 VOUT
7 FAULT
6 SHDN
MS10 PACKAGE
10-LEAD PLASTIC MSOP
TJMAX = 150°C, θJA = 160°C/W
ORDER INFORMATION
LEAD FREE FINISH
LTC4368CDD-1#PBF
LTC4368CDD-2#PBF
LTC4368IDD-1#PBF
LTC4368IDD-2#PBF
LTC4368HDD-1#PBF
LTC4368HDD-2#PBF
LTC4368CMS-1#PBF
LTC4368CMS-2#PBF
LTC4368IMS-1#PBF
LTC4368IMS-2#PBF
LTC4368HMS-1#PBF
LTC4368HMS-2#PBF
TAPE AND REEL
LTC4368CDD-1#TRPBF
LTC4368CDD-2#TRPBF
LTC4368IDD-1#TRPBF
LTC4368IDD-2#TRPBF
LTC4368HDD-1#TRPBF
LTC4368HDD-2#TRPBF
LTC4368CMS-1#TRPBF
LTC4368CMS-2#TRPBF
LTC4368IMS-1#TRPBF
LTC4368IMS-2#TRPBF
LTC4368HMS-1#TRPBF
LTC4368HMS-2#TRPBF
PART MARKING*
LGTH
LGTK
LGTH
LGTK
LGTH
LGTK
LTGTG
LTGTJ
LTGTG
LTGTJ
LTGTG
LTGTJ
PACKAGE DESCRIPTION
10-Lead (3mm × 3mm) Plastic DFN
10-Lead (3mm × 3mm) Plastic DFN
10-Lead (3mm × 3mm) Plastic DFN
10-Lead (3mm × 3mm) Plastic DFN
10-Lead (3mm × 3mm) Plastic DFN
10-Lead (3mm × 3mm) Plastic DFN
10-Lead Plastic MSOP
10-Lead Plastic MSOP
10-Lead Plastic MSOP
10-Lead Plastic MSOP
10-Lead Plastic MSOP
10-Lead Plastic MSOP
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
2
For more information www.analog.com


Part Number LTC4368HDD
Description 100V UV/OV and Reverse Protection Controller
Maker Analog Devices
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