Surge Stoppers Selector Card Datasheet by Analog Devices Inc.

ANALOG P ow E R BY L D LINEAR,” DEVICES AHEAD DF WHAT'S PDSSIBLE“ CT‘ 0 FET SURGE STOPPER No More Bulky Components! 00630
LOAD
VOUT
SUPPLY
VIN
CIRCUIT
BREAKER
PROTECTION
MOSFET
ADJUSTABLE
OUTPUT CLAMP
VOLTAGE
SURGE STOPPER
SURGE STOPPER
FAULT
TIMER
20V/DIV
100ms/DIV
100V INPUT SURGE
12V
12V
VIN
VOUT
27V ADJUSTABLE CLAMP
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SURGE
STOPPERS
Compact, Precise Overvoltage and Overcurrent Protection
Automotive, industrial, and aviation electronics need to survive and operate through power supply surges endemic to their environment. Traditional
overvoltage (OV) and overcurrent (OC) protection relies on capacitors, transient voltage suppressors (TVS), fuses, diodes, and inductors, but these
discrete solutions are bulky, inaccurate, and blow the fuse during a sustained fault. Our surge stopper family replaces these passive components with
a controller and series protection MOSFET, enabling a compact and precise solution.
XShields Load Electronics from High Voltage Surges
XAllows Uninterrupted System Operation through Surges
XProtects Supply from Overload and Short-Circuit
XDisconnects Load from Supply for Sustained Faults
XAdjustable Clamp Voltage Eases Design Changes and Reuse
XTight Accuracy Minimizes Overdesign and Reduces Cost
XLow Profile, Surface Mount Solution Enables Compact Form Factor
XAutomotive and Military-Plastic Temperature Grades
LT4363 TIMER
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Surge Stopper with Circuit Breaker
XResistor-Adjustable 2% Accurate Clamp Voltage
XInput Surge: Linear Regulator for Adjustable Time
X−60V Reverse Input Protection
XFoldback Current-Limited Circuit Breaker with Adjustable Delay
XFault Timer Accelerated by MOSFET Voltage Drop
Linear Surge Stoppers
During normal operation, a linear surge stopper fully turns on the MOSFET to provide a low resistance path for the load current. When the input supply volt-
age surges, the output is linearly regulated to a safe voltage set by a resistive divider, enabling ride-through operation. A capacitive fault timer protects the
MOSFET by limiting the time spent in the high dissipation regulation state.
8µA Quiescent Current Surge Stopper
XLow 8µA Operating IQ, 6µA in Shutdown
XPin-Selectable Gate Clamp for 12V and 24V/28V Systems
XInput Surge: Clamps MOSFET Gate for Adjustable Time
X−60V Reverse Input Protection
XCurrent-Limited Circuit Breaker with Adjustable Delay
XFault Timer Accelerated by MOSFET Power
Floating Surge Stopper
XRugged Floating Topology for >500V Operation
XResistor-Adjustable 3% Accurate Clamp Voltage
XInput Surge: Linear Regulator for Adjustable Time
Surge Stopper with Ideal Diode
XLT4363 Functions Plus Ideal Diode Control
XIdeal Diode for Output Holdup and Reverse Protection
XResistor-Adjustable 2.4% Accurate Clamp Voltage
X−40V Reverse-Input, −20V Reverse-Output Protection
TIMER
FB
VCC
LT4363
VOUT
VIN
4V TO 80V
UV
SHDN
OV
TIMER
FB
LTC4364
FAULT
VIN
4V TO 80V
VOUT
ENABLE
i
VCC
CLAMP
SELECT TIMER
FAULT
LTC4380
VIN
4V TO 72V VOUT
LTC4366
VOUT
FB
TIMER
VSS
VIN
9V TO >500V
LTC7860 .mv 0v = 35v w. ivfluiwfioiwii 6"” Vnm Vum “WV WI zooms/ow Vw 2.5V m 5 5v LTC4361 PWRBD
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Switching Surge Stopper
During normal operation, a switching surge stopper turns on an external MOSFET continuously to pass the input voltage through to the output with minimum
conduction loss. When an input voltage surge occurs, it starts switching the external MOSFET to operate as a high efficiency switching DC/DC regulator to
protect critical downstream components by limiting the output voltage and current.
Protection Controllers
Protection controllers disconnect immediately during overvoltage and provide a compact solution for power entry protection in battery-powered portable
equipment.
Undervoltage (UV), Overvoltage (OV), Overcurrent
(OC), and Reverse Input (RI) Protection Controllers
XBlock Voltages Outside UV-OV Window
X−40V Reverse Input Protection
XAdjustable 1.5% Accurate UV, OV Thresholds
XLow Quiescent and Shutdown Currents
XCompact Solution Footprint
Overvoltage and Overcurrent Protection Controllers
X2.5V to 5.5V Operation
XFixed 5.8V ±2% Overvoltage Turn-Off Threshold
X<1µs Fast Overvoltage Turn-Off
XReverse Input Protection FET Driver Output
XCompact Solution Footprint
High Efficiency Switching Surge Stopper
XHigh Efficiency for High Power (>5A) Surges
XNormal Operation: 100% Duty Cycle with MOSFET On
XInput Surge: Switching Regulator with Adjustable Timer
XResistor Adjustable 1.1% Accurate Clamp Voltage
XAdjustable Current Limit
XInherent LC Filter Improves Input EMI
Device VIN UV OV RI OC
Forward
Current Trip
Reverse
Current Trip
LTC4365 2.5V to 34V • • •
LTC4367 2.5V to 60V • • •
LTC4368 2.5V to 60V • • • • 50mV −50mV/−3mV
Device VIN(MAX)OV OC MOSFET
LTC4360 80V • External N-Ch
LTC4361 80V • • External N-Ch
LTC4362 28V • • Internal 1.5A
UV
SHDN
OV RETRY
FAULT
LTC4368
VIN
2.5V TO 60V VOUT
VALID WINDOW
V
IN
V
IN
V
V
OV = 36V
UV = 7V
200ms/DIV
–40V
20V/DIV
GND
+70V
20V/DIV
ANALOG DEVICES AHEAD or wms Possum-
Analog Devices, Inc.
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PHsurgestoppers-9/18(B)
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Analog Devices provides evaluation boards demonstrating surge stopper circuits for automotive and military surge standards such as ISO-7637-2 and MIL-
STD-1275D. Each board has been tested by an independent lab with the complete test report available online.
Solutions for Automotive and Military Surge Standards
DC2062 for 12V, 3.8A ISO-7637-2 Application
XFeatures LT4363 Surge Stopper
XRides through 100V, 500ms Load Dump Pulse
XLatchoff and Auto-Retry Options
Parameter Min Typ Max Units
Input Supply Operating Range 5 12 23.5 V
Input Supply 500ms Surge 100 V
Output Regulation Voltage 23.5 25 25.4 V
Current Limit 3 3.8 4.6 A
DC2150 for 28V, 5A MIL-STD-1275D Application
XFeatures LTC4366 and LT4363 Surge Stoppers
XRides through 100V, 500ms Surge
XFour Assembly Options, Full-Featured Option Available
Parameter Min Typ Max Units
Input Supply Operating Range 8 28 40 V
Input Supply 500ms Surge 100 V
Output Regulation Voltage 41 43.6 46 V
Current Limit 4.4 5 5.6 A
Overvoltage Protection Selection Guide
Device
OVP
Type*OCP Operating VIN Stops VIN
Reverse
Input IQ (µA)ISHDN (µA)MOSFET
OVP
Accuracy
Fault
Timer
Blocks
IREV
Temp
Grades
Demo
Board Package (mm x mm)
Surge Stoppers
LT4356 1 •† 4V to 80V >100V −60V 1210 7 N-Ch 2% • C, I, H, MP DC1018 4x3 DFN-12, MSOP-10, SO-16
LT4363 1 • 4V to 80V >100V −60V 970 7 N-Ch 2% • C, I, H, MP DC1935 4x3 DFN-12, MSOP-12, SO-16
LTC4364 1 • 4V to 80V >100V −40V 483 10 N-Ch 2.4% • • C, I, H DC2027 4x3 DFN-14, MSOP-16, SO-16
LTC4366 19V to >500V >500V External 159 5 N-Ch 3% • C, I, H, MP DC1850 3x2 DFN-8, TSOT-8
LTC4380 2 • 4V to 72V >100V −60V 8 6 N-Ch ~10% • C, I, H DC2178 3x3 DFN-10, MSOP-10
LTC7860 3 • 3.5V to 60V >100V External 770 7 P-Ch 1.1% • E, I, H, MP DC2239 MSOPE-12
Protection Controllers
LTC4365 42.5V to 34V >100V −40V 125 10 N-Ch 1.5% C, I, H DC1555 3x2 DFN-8, TSOT-8
LTC4367 42.5V to 60V >100V −40V 70 5 N-Ch 1.5% C, I, H DC2417 3x3 DFN-8, MSOP-8
LTC4368 4 • 2.5V to 60V >100V −40V 80 5 N-Ch 1.5% • C, I, H DC2418 3x3 DFN-10, MSOP-10
LTC4360 42.5V to 5.5V 80V External 230 1.5 N-Ch 2% C, I DC1505 SC70-8
LTC4361 4 • 2.5V to 5.5V 80V External 230 1.5 N-Ch 2% C, I, H DC1506 2x2 DFN-8, TSOT-8
LTC4362 4 • 2.5V to 5.5V 28V External 220 1.5 1.5A 2% C, I DC1575 2x3 DFN-8
OCP = Overcurrent Protection, * Overvoltage Protection Type: 1 = Linear regulation of output; 2 = Clamps MOSFET gate voltage; 3 = Switching regulation of output; 4 = Disconnects output from input; † Overcurrent protection only
below 100V