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LTC4368HDD-2#PBF

IC SURGE SUPPRESSION ADJ 10DFN

器件类别：电路保护   

厂商名称：Linear ( ADI )

厂商官网：http://www.analog.com/cn/index.html

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器件参数
参数名称
属性值
电压 - 箝位
可调式
技术
外部开关
电路数
1
应用
汽车级
安装类型
表面贴装
封装/外壳
10-WFDFN 裸露焊盘
供应商器件封装
10-DFN（3x3）
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LTC4368
100V UV/OV and Reverse Protection
Controller with Bidirectional Circuit Breaker
FEATURES
n
n
n
n
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.
n
n
n
n
n
n
n
n
Wide Operating Voltage Range: 2.5V to 60V
Overvoltage Protection to 100V
Reverse Supply Protection to –40V
Bidirectional Electronic Circuit Breaker:
n
+50mV Forward Sense Threshold
n
–50mV Reverse (LTC4368-1)
n
–3mV Reverse (LTC4368-2)
Adjustable ±1.5% Undervoltage and Overvoltage
Thresholds
Low Operating Current: 80µA
Low Shutdown Current: 5µA
Controls Back-to-Back N-Channel MOSFETs
Blocks 50Hz and 60Hz AC Power
Hot Swappable Supply Input
Pin-Selectable Overcurrent Auto-Retry Timer or Latchoff
10-Pin MSOP and 3mm × 3mm DFN Packages
APPLICATIONS
n
n
n
n
Reverse Battery Protection
Portable Instrumentation
Automotive and Industrial Surge Protection
Energy Storage Systems
TYPICAL APPLICATION
24V Application with 10A Circuit Breaker
+50mV
V
IN
24V
–40V TO 100V
INRUSH
CONTROL
22k
3.3nF
V
IN
464k
SHDN
1500k
OV = 36V
UV = 7V
UV
121k
OV
29.4k
GND
RETRY
LTC4368-2
FAULT
1200ms COOLDOWN
AFTER FORWARD
OC FAULT
0.22µF
4368 TA01a
Load Protected from Reverse and Overvoltage at V
IN
I
OUT
–0.6A TO 10A
+70V
20V/DIV
OV = 36V
UV = 7V
SiR870
SiR870
0.005
–3mV
V
OUT
7V TO 36V
+
100µF
V
IN
VALID WINDOW
GATE
SENSE
V
OUT
GND
V
OUT
V
OUT
–40V
20V/DIV
V
IN
200ms/DIV
4368 TA01b
Document Feedback
For more information
www.analog.com
1
Rev A
LTC4368
ABSOLUTE MAXIMUM RATINGS
(Note 1, Note 2)
Supply Voltage
V
IN
........................................................ –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
V
OUT
, SENSE ............................................–10V to 80V
V
OUT
to SENSE.........................................–10V to 10V
V
IN
to V
OUT
........................................... –60V to 100V
Output Voltages
FAULT
(Note 3) ....................................... –0.3V to 80V
GATE .............................................. –40V to V
IN
+ 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
V
IN
UV
OV
RETRY
GND
1
2
3
4
5
10 GATE
9 SENSE
8 V
OUT
7
FAULT
6
SHDN
V
IN
UV
OV
RETRY
GND
1
2
3
4
5
TOP VIEW
10
9
8
7
6
GATE
SENSE
V
OUT
FAULT
SHDN
DD PACKAGE
10-LEAD (3mm
×
3mm) PLASTIC DFN
EXPOSED PAD (PIN 11) PCB GROUND CONNECTION OPTIONAL
T
JMAX
= 150°C,
θ
JA
= 43°C/W
MS10 PACKAGE
10-LEAD PLASTIC MSOP
T
JMAX
= 150°C,
θ
JA
= 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
*Temperature grades are identified by a label on the shipping container. Consult ADI Marketing for parts specified with wider operating temperature ranges.
Tape and reel specifications.
Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
2
Rev A
For more information
www.analog.com
LTC4368
ELECTRICAL CHARACTERISTICS
SYMBOL
V
IN
V
IN(UVLO)
I
VIN
I
VIN(R)
PARAMETER
Input Voltage: Operating Range
Protection Range
Input Supply Undervoltage Lockout
Input Supply Current: On
Off
Reverse Input Supply Current
V
IN
Rising
SHDN = 2.5V,
SENSE = V
OUT
 = V
IN
SHDN = 0V, SENSE = V
OUT
 = V
IN
V
IN
 = –40V, SENSE = V
OUT
 = 0V
V
OUT
Rising, V
OUT
– SENSE = 100mV, V
IN
= 12V
V
IN
 = 12V, V
OUT
:0V→12V, V
OUT
– SENSE = 100mV
SHDN = 2.5V,
SENSE = V
OUT
 = V
IN
SHDN = 0V,
SENSE = V
OUT
 = V
IN
V
IN
 = –40V, SENSE = V
OUT
 = 0V
SHDN = 2.5V,
SENSE = V
OUT
 = V
IN
SHDN = 0V,
SENSE = V
OUT
 = V
IN
V
IN
 = –40V, SENSE = V
OUT
 = 0V
V
OUT
 = V
IN
V
IN
 = 12V, V
OUT
 = 0.5V
V
IN
 = 12V, V
OUT
 = 0V
LTC4368-1
LTC4368-2
V
OUT
 = V
IN
V
OUT
 = V
IN
V
IN
, V
OUT
, SENSE
l
l
l
l
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 2.5V to 60V, unless otherwise noted (Note 2). UV = 2.5V, OV = 0V,
SHDN = 2.5V,
SENSE = V
OUT
 = V
IN
unless otherwise specified.
CONDITIONS
MIN
2.5
–40
1.8
2.2
30
5
–1.5
1.8
40
2.2
120
50
3
20
1.2
0.1
1
40
40
30
–42
–1
75
20
3
7.2
10
–20
40
30
150
22
3
50
50
50
–50
–3
100
50
4
8.7
11
–35
90
60
2
275
32
8
TYP
MAX
60
100
2.4
100
25
–2.5
2.4
280
125
20
50
2
2
10
60
60
70
–58
–5
125
125
5.5
10.8
13.1
–60
160
90
6
575
45
18
UNITS
V
V
V
µA
µA
mA
V
µs
µA
µA
µA
µA
µA
µA
mV
mV
mV
mV
mV
mV
mV
V
V
V
µA
µA
mA
µs
µs
ms
µs
V
OUT(UVLO)
V
OUT
Undervoltage Lockout
t
VOUT(UVLO)
V
OUT
Undervoltage Lockout Delay
I
VOUT
V
OUT
Input Current:
On
Off
Reverse
l
l
l
l
l
Current Sense
I
SENSE
ΔV
SENSE,F
ΔV
SENSE,R
ΔV
RR
GATE
ΔV
GATE
I
GATE(UP)
I
GATE(FAST)
t
D(FAST)
t
D(SLOW)
t
D(ON)
t
p(GATE)
Gate Drive (GATE – V
OUT
)
Gate Pull Up Current
Gate Fast Pull Down Current
Gate Fast Turn Off Delay
Gate Slow Turn Off Delay
Gate Turn-On Delay Time
Overcurrent Fault Propagation Delay
V
IN
 = 2.5V, I
GATE
 = 0µA, –1µA
V
IN
 = 5V, I
GATE
 = 0µA, –1µA
V
IN
 = 12V to 60V, I
GATE
 = 0µA, –1µA
GATE = 15V, V
IN
 = 12V
GATE = 20V, V
IN
 = 12V
GATE = 20V, SENSE = V
IN
 = 12V
C
GATE
 = 2.2nF: UV, OV Fault
C
GATE
 = 2.2nF,
SHDN
Falling, V
IN
 = 12V
V
IN
 = 12V, Power Good to ΔV
GATE
 > 0V
C
GATE
 = 2.2nF, Overcurrent Fault to ΔV
GATE
= 0V
SENSE – V
OUT
: 0 to +100mV, or
SENSE – V
OUT
: 0 to –100mV (LTC4368-1)
SENSE – V
OUT
: 0 to –10mV (LTC4368-2)
l
l
l
l
l
l
l
l
SENSE Input Current: On
Off
Reverse
Overcurrent Fault Threshold, Forward
(SENSE – V
OUT
)
Overcurrent Fault Threshold, Reverse
(SENSE – V
OUT
)
Reverse Overcurrent Re-Enable
Turn-On Threshold (V
IN
– V
OUT
)
l
l
l
l
l
l
l
l
l
l
V
IN
 = SENSE = 6V to 60V
V
IN
 = SENSE = 2.5V to <6V
I
GATE(SLOW)
Gate Slow Pull Down Current
l
l
For more information
www.analog.com
3
Rev A
LTC4368
ELECTRICAL CHARACTERISTICS
SYMBOL
UV, OV
V
UV
V
OV
V
UVHYST
V
OVHYST
I
LEAK
t
FAULT
SHDN
V
SHDN
I
SHDN
t
START
t
SHDN(F)
t
LOWPWR
FAULT
V
OL
I
FAULT
RETRY
V
RETRY
I
RETRY
t
CLEAR
t
RETRY
Configuration Threshold for GATE
Latch-Off
Output Current for RETRY Timer
Minimum
SHDN
Pulse to Clear Forward
Overcurrent RETRY Latch
Forward Overcurrent Cool-Down Delay
RETRY Falling to ΔI
RETRY
 > 2µA
V
IN
 = 12V
RETRY = 2V, V
IN
= 12V
RETRY = 0V, V
IN
= 12V
RETRY = 0V, V
IN
= 12V
FAULT
Asserted to
FAULT
Released, C
RETRY
 = 22nF
SENSE = V
OUT
 = V
IN
 = 12V
l
l
l
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 2.5V to 60V, unless otherwise noted (Note 2). UV = 2.5V, OV = 0V,
SHDN = 2.5V,
SENSE = V
OUT
 = V
IN
unless otherwise specified.
PARAMETER
UV Input Threshold Voltage
OV Input Threshold Voltage
UV Input Hysteresis
OV Input Hysteresis
UV, OV Leakage Current
UV, OV Fault Propagation Delay
SHDN
Input Threshold
SHDN
Input Current
Delay Coming Out of Shutdown Mode
SHDN
To
FAULT
Asserted
Delay From Turn Off to Low Power
Operation
FAULT
Output Voltage Low
FAULT
Leakage Current
V = 0.5V, V
IN
 = 60V
Overdrive = 50mV, V
IN
 = 12V
SHDN
Falling
SHDN = 10V,
V
IN
 = 60V
SHDN
Rising to
FAULT,
V
IN
= 12V
V
IN
 = 12V
V
IN
 = 12V
CONDITIONS
UV Falling
OV Rising
l
l
l
l
l
l
MIN
492.5
492.5
20
20
TYP
500
500
25
25
1
MAX
507.5
507.5
32
32
±10
2
1.2
±15
1400
3
48
UNITS
mV
mV
mV
mV
nA
µs
V
nA
µs
µs
ms
l
l
l
l
l
0.4
400
20
0.75
800
1.5
32
I
FAULT
 = 500µA, V
IN
 = 12V
FAULT = 5V,
V
IN
 = 60V
l
l
0.15
0.4
±20
V
nA
V
µA
µA
µs
0.5
2.5
–10
15
80
1
3.5
–17
1.5
4.5
–25
120
150
ms
Note 1.
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2.
All currents into pins are positive; all voltages are referenced to
GND unless otherwise noted.
Note 3.
These pins can be tied to voltages below –0.3V through a resistor
that limits the current below 1mA.
4
Rev A
For more information
www.analog.com
LTC4368
TYPICAL PERFORMANCE CHARACTERISTICS
V
IN
Operating Current vs
Temperature
SHDN = 2.5V
V
IN
= V
OUT
V
IN
= 60V
I
VIN
(µA)
V
IN
= 12V
8
50
V
IN
Shutdown Current vs Voltage
SHDN
= 0V
V
IN
= V
OUT
V
IN
Supply Current vs Voltage
(–40V to 100V)
500
UV =
SHDN
= 0V
V
OUT
= 0V
40
6
I
VIN
(µA)
0
I
VIN
(µA)
30
–500
4
20
V
IN
= 2.5V
10
–1000
2
0
–50
–25
0
25
50
75
TEMPERATURE (°C)
100
125
0
T
A
= 125°C
T
A
= 70°C
T
A
= 25°C
T
A
= –45°C
0
10
20
30
V
IN
(V)
40
50
60
4368 G02
–1500
–2000
–50
T
A
= 125°C
T
A
= 25°C
T
A
= –45°C
–25
0
25
V
IN
(V)
50
75
100
4368 G03
4368 G01
V
OUT
Operating Current vs
Temperature
75
SHDN = 2.5V
V
IN
= V
OUT
6
V
OUT
= 60V
5
4
V
OUT
= 12V
I
VOUT
(µA)
V
OUT
Shutdown Current vs
Temperature
SHDN
= 0V
V
IN
= V
OUT
V
OUT
= 60V
I
VOUT
(µA)
20
V
OUT
Current vs Reverse V
IN
V
OUT
= 0V
–45°C
60
15
I
VOUT
(µA)
45
3
2
1
V
OUT
= 2.5V
0
–50 –25
0
25
50
75
TEMPERATURE (°C)
V
OUT
= 12V
10
25°C
30
V
OUT
= 2.5V
15
5
125°C
0
–50
–25
0
25
50
75
TEMPERATURE (°C)
100
125
100
125
0
0
–10
4368 G04
4368 G05
–20
V
IN
(V)
–30
–40
4368 G06
14
12
10
∆V
GATE
(V)
8
6
4
2
0
GATE Drive vs V
IN
Supply Voltage
V
OUT
= 0V
12
10
V
OUT
= V
IN
∆V
GATE
(V)
8
6
4
T
A
= 25°C
I
GATE
= –1µA
0
4
8
12
V
IN
(V)
16
20
4368 G07
GATE Drive vs GATE Current
V
IN
= V
OUT
= 12V
T
A
= 125°C
T
A
= 25°C
T
A
= –45°C
2
0
0
–10
–20
–30
–40
I
GATE(UP)
(µA)
–50
–60
4368 G08
For more information
www.analog.com
5
Rev A
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