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DC2027A-B

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
LTC4364-1/LTC4364-2
1
436412f
TYPICAL APPLICATION
FEATURES DESCRIPTION
Surge Stopper
with Ideal Diode
The LTC
®
4364 surge stopper with ideal diode controller
protects loads from high voltage transients. It limits and
regulates the output during an overvoltage event, such
as load dump in automobiles, by controlling the voltage
drop across an external N-channel MOSFET pass device.
The LTC4364 also includes a timed, current limited circuit
breaker. In a fault condition, an adjustable fault timer must
expire before the pass device is turned off. The LTC4364-1
latches off the pass device while the LTC4364-2 automati-
cally restarts after a delay. The LTC4364 precisely monitors
the input supply for overvoltage (OV) and undervoltage
(UV) conditions. The external MOSFET is held off in un-
dervoltage and auto-retry is disabled in overvoltage.
An integrated ideal diode controller drives a second MOS-
FET to replace a Schottky diode for reverse input protec-
tion and output voltage holdup. The LTC4364 controls the
forward voltage drop across the MOSFET and minimizes
reverse current transients upon power source failure,
brownout or input short.
Overvoltage Protector Regulates
Output at 27V During Input Transient
Ideal Diode Holds Up Output
During Input Short
4A, 12V Overvoltage Output Regulator with Ideal Diode
Withstands 200V 1ms Transient at V
IN
APPLICATIONS
n
Wide Operating Voltage Range: 4V to 80V
n
Withstands Surges Over 80V with V
CC
Clamp
n
Adjustable Output Clamp Voltage
n
Ideal Diode Controller Holds Up Output Voltage
During Input Brownouts
n
Reverse Input Protection to –40V
n
Reverse Output Protection to –20V
n
Overcurrent Protection
n
Low 10μA Shutdown Current at 12V
n
Adjustable Fault Timer
n
0.1% Retry Duty Cycle During Faults (LTC4364-2)
n
Available in 4mm × 3mm 14-Lead DFN, 16-Lead MSOP,
and 16-Lead SO Packages
n
Automotive/Avionic Surge Protection
n
Hot Swap/Live Insertion
n
Redundant Supply ORing
n
Output Port Protection
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
+
OUTSENSEDGATESOURCEHGATE
TMRGND
0.22µF
UV
UV
6V
OV
60V
OV
ENOUT
ENABLE
FAULT
436412 TA01a
F LT
SHDN FB
10Ω
2.2k
383k
V
IN
12V
90.9k
10k
102k
22µF
V
OUT
CLAMPED
AT 27V
4.99k
CMZ5945B
68V
FDB33N25 FDB3682
10mΩ
6.8nF
V
CC
LTC4364
50ms/DIV
C
TMR
= 6.8µF
I
LOAD
= 0.5A
V
IN
20V/DIV
12V
12V
V
OUT
20V/DIV
92V INPUT SURGE
27V CLAMP (ADJUSTABLE)
4364 TA01b
1ms/DIV
C
LOAD
= 6300µF
I
LOAD
= 0.5A
V
IN
10V/DIV
12V
12V
V
OUT
10V/DIV
4364 TA01c
INPUT SHORTED
TO GND
OUTPUT HELD UP
LTC4364-1/LTC4364-2
2
436412f
ABSOLUTE MAXIMUM RATINGS
Supply Voltage: V
CC
................................. –40V to 100V
SOURCE, OV, UV, SH D N Voltages
............. –40V to 100V
DGATE, HGATE Voltages
(Note 3)
..................... SOURCE – 0.3V to SOURCE + 10V
ENOUT, FLT Voltages
................................ –0.3V to 100V
OUT, SENSE Voltages.................................–20V to 100V
Voltage Difference (SENSE to OUT)
............ –30V to 30V
Voltage Difference (OUT to V
CC
) ..............–100V to 100V
Voltage Difference (SENSE to SOURCE)
..–100V to 100V
(Notes 1, 2)
1
2
3
4
5
6
7
14
13
12
11
10
9
8
FB
TMR
ENOUT
FLT
GND
OV
UV
OUT
SENSE
DGATE
SOURCE
HGATE
V
CC
SHDN
TOP VIEW
15
DE PACKAGE
14-LEAD (4mm × 3mm) PLASTIC DFN
T
JMAX
= 150°C, θ
JA
= 45°C/W
EXPOSED PAD (PIN 15) PCB GND CONNECTION OPTIONAL
1
2
3
4
5
6
7
8
OUT
SENSE
NC
DGATE
SOURCE
HGATE
NC
V
CC
16
15
14
13
12
11
10
9
FB
TMR
ENOUT
F LT
GND
OV
UV
SHDN
TOP VIEW
MS PACKAGE
16-LEAD PLASTIC MSOP
T
JMAX
= 150°C, θ
JA
= 120°C/W
TOP VIEW
S PACKAGE
16-LEAD PLASTIC SO
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
OUT
SENSE
NC
DGATE
SOURCE
HGATE
NC
V
CC
FB
TMR
ENOUT
FLT
GND
OV
UV
SHDN
T
JMAX
= 150°C, θ
JA
= 100°C/W
PIN CONFIGURATION
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC4364CDE-1#PBF LTC4364CDE-1#TRPBF 43641
14-Lead (4mm × 3mm) Plastic DFN
0°C to 70°C
LTC4364IDE-1#PBF LTC4364IDE-1#TRPBF 43641
14-Lead (4mm × 3mm) Plastic DFN
–40°C to 85°C
LTC4364HDE-1#PBF LTC4364HDE-1#TRPBF 43641
14-Lead (4mm × 3mm) Plastic DFN
–40°C to 125°C
LTC4364CDE-2#PBF LTC4364CDE-2#TRPBF 43642
14-Lead (4mm × 3mm) Plastic DFN
0°C to 70°C
LTC4364IDE-2#PBF LTC4364IDE-2#TRPBF 43642
14-Lead (4mm × 3mm) Plastic DFN
–40°C to 85°C
LTC4364HDE-2#PBF LTC4364HDE-2#TRPBF 43642
14-Lead (4mm × 3mm) Plastic DFN
–40°C to 125°C
LTC4364CMS-1#PBF LTC4364CMS-1#TRPBF 43641 16-Lead Plastic MSOP 0°C to 70°C
LTC4364IMS-1#PBF LTC4364IMS-1#TRPBF 43641 16-Lead Plastic MSOP –40°C to 85°C
LTC4364HMS-1#PBF LTC4364HMS-1#TRPBF 43641 16-Lead Plastic MSOP –40°C to 125°C
LTC4364CMS-2#PBF LTC4364CMS-2#TRPBF 43642 16-Lead Plastic MSOP 0°C to 70°C
LTC4364IMS-2#PBF LTC4364IMS-2#TRPBF 43642 16-Lead Plastic MSOP –40°C to 85°C
LTC4364HMS-2#PBF LTC4364HMS-2#TRPBF 43642 16-Lead Plastic MSOP –40°C to 125°C
FB, TMR Voltages ..................................... –0.3V to 5.5V
Operating Ambient Temperature Range
LTC4364C ................................................ 0°C to 70°C
LTC4364I .............................................–40°C to 85°C
LTC4364H .......................................... –40°C to 125°C
Storage Temperature Range
.................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
MS, SO Packages ............................................. 300°C
LTC4364-1/LTC4364-2
3
436412f
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC4364CS-1#PBF LTC4364CS-1#TRPBF LTC4364S-1 16-Lead Plastic SO 0°C to 70°C
LTC4364IS-1#PBF LTC4364IS-1#TRPBF LTC4364S-1 16-Lead Plastic SO –40°C to 85°C
LTC4364HS-1#PBF LTC4364HS-1#TRPBF LTC4364S-1 16-Lead Plastic SO –40°C to 125°C
LTC4364CS-2#PBF LTC4364CS-2#TRPBF LTC4364S-2 16-Lead Plastic SO 0°C to 70°C
LTC4364IS-2#PBF LTC4364IS-2#TRPBF LTC4364S-2 16-Lead Plastic SO –40°C to 85°C
LTC4364HS-2#PBF LTC4364HS-2#TRPBF LTC4364S-2 16-Lead Plastic SO –40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is 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/
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 12V.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Operating Supply Range
l
4 80 V
I
CC
Supply Current V
CC
= SOURCE = SENSE = OUT = 12V, No Fault
l
370 750 µA
I
CC(SHDN)
Supply Current in Shutdown Shutdown
l
10 50 μA
I
CC(REV)
Reverse Input Current V
CC
= −30V
l
0 –10 μA
Surge Stopper
∆V
HGATE
HGATE Gate Drive, (V
HGATE
− V
SOURCE
) V
CC
= 4V, DGATE Low, I
HGATE
= 0µA, −1µA
V
CC
= 8V to 80V, DGATE Low, I
HGATE
= 0µA, −1µA
l
l
5
10
7
12
9
16
V
V
I
HGATE(UP)
HGATE Pull-Up Current V
CC
= HGATE = DGATE = SOURCE = 12V
l
–10 –20 –30 µA
I
HGATE(DN)
HGATE Pull-Down Current
Overvoltage: FB = 1.5V, ∆V
HGATE
= 5V
l
60 130 mA
Overcurrent: ∆V
SNS
= 100mV, ∆V
HGATE
= 5V
l
60 130 mA
Shutdown/Fault Turn-Off: ∆V
HGATE
= 5V
l
0.4 1 mA
I
SRC
SOURCE Input Current V
CC
= SOURCE = SENSE = OUT = 12V
V
CC
= SOURCE = 12V, Shutdown
V
SOURCE
= –30V
l
l
l
18
32
–2.0
40
90
–3.5
µA
µA
mA
V
FB
FB Servo Voltage V
CC
= 12V to 80V
l
1.22 1.25 1.28 V
I
FB
FB Input Current FB = 1.25V
l
0 1 µA
∆V
SNS
Overcurrent Fault Threshold,
(V
SENSE
– V
OUT
)
V
CC
= 4V to 80V, OUT = 2.5V to V
CC
, 0°C to 125°C
V
CC
= 4V to 80V, OUT = 2.5V to V
CC
, –40°C to 125°C
V
CC
= 4V to 80V, OUT = 0V to 1.5V
l
l
l
45
43
18
50
50
25
55
57
32
mV
mV
mV
I
SNS
SENSE Input Current SENSE = V
CC
= SOURCE = OUT = 12V
SENSE = –15V
l
l
55
–2
110
–4
µA
mA
I
TMR(UP)
TMR Pull-Up Current, Overvoltage TMR = 1V, FB = 1.5V, V
CC
– OUT = 0.5V
TMR = 1V, FB = 1.5V, V
CC
– OUT = 75V
l
l
–1.3
–40
–2.2
–50
–3
–60
µA
µA
TMR Pull-Up Current, Overcurrent
TMR = 1V, ∆V
SNS
= 60mV, V
CC
– OUT = 0.5V
TMR = 1V, ∆V
SNS
= 60mV, V
CC
– OUT = 75V
l
l
–6
–210
–10
–260
–14
–310
µA
µA
TMR Pull-Up Current, Warning TMR = 1.3V, FB = 1.5V, V
CC
– OUT = 0.5V
l
–3 –5 –7 µA
TMR Pull-Up Current, Retry TMR = 1V, FB = 1.5V
l
–1.3 –2 –3 µA
I
TMR(DN)
TMR Pull-Down Current TMR = 1V, FB = 1.5V, Retry
Shutdown
l
l
1.1
0.3
2
0.75
2.7
1.5
µA
mA
V
TMR(F)
TMR Fault Threshold F LT Falling, V
CC
= 4V to 80V
l
1.22 1.25 1.28 V
V
TMR(G)
TMR Gate Off Threshold HGATE Falling, V
CC
= 4V to 80V
l
1.32 1.35 1.38 V
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24

DC2027A-B

Mfr. #:
Buy DC2027A-B
Manufacturer:
Analog Devices Inc.
Description:
Power Management IC Development Tools LTC4364DE-2 Demoboard: 12V Surge Stopper
Lifecycle:
New from this manufacturer.
Delivery:
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