LT4356MPMS-1#TR Linear Technology, LT4356MPMS-1#TR Datasheet

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LT4356MPMS-1#TR

Manufacturer Part Number
LT4356MPMS-1#TR
Description
MS-Hot Swap/High Voltage, Overvoltage Protection Regulator
Manufacturer
Linear Technology
Datasheet

Specifications of LT4356MPMS-1#TR

Linear Misc Type
Positive Voltage
Package Type
MSOP
Operating Supply Voltage (min)
4V
Operating Supply Voltage (max)
80V
Operating Temperature (max)
125C
Product Depth (mm)
3mm
Product Height (mm)
0.86mm
Product Length (mm)
3mm
Mounting
Surface Mount
Pin Count
10
Lead Free Status / Rohs Status
Not Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LT4356MPMS-1#TRLT4356MPMS-1
Manufacturer:
LT
Quantity:
10 000
Company:
Part Number:
LT4356MPMS-1#TRLT4356MPMS-1#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
FEATURES
APPLICATIONS
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of
Linear Technology Corporation. Hot Swap, No R
Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
12V
V
UNDERVOLTAGE
383k
100k
IN
Stops High Voltage Surges
Adjustable Output Clamp Voltage
Overcurrent Protection
Wide Operation Range: 4V to 80V
Reverse Input Protection to –60V
Low 7μA Shutdown Current, LT4356-1
Adjustable Fault Timer
Controls N-channel MOSFET
Shutdown Pin Withstands –60V to 100V
Fault Output Indication
Guaranteed Operation –55°C to 125°C
Auxiliary Amplifi er for Level Detection Comparator or
Linear Regulator Controller
Available in 10-Pin MSOP or 16-Pin SO Packages
Automotive/Avionic Surge Protection
Hot Swap/Live Insertion
High Side Switch for Battery Powered Systems
Intrinsic Safety Applications
4A, 12V Overvoltage Output Regulator
SHDN
IN
A
V
OUT
CC
+
10mΩ
GND
SNS
LT4356S
IRLR2908
GATE
SENSE
TMR
10Ω
and ThinSOT are trademarks of Linear
4356mp12 TA01
0.1μF
OUT
FLT
EN
FB
FAULT
102k
4.99k
V
OUT
SHDN
CONVERTER
DC-DC
V
CC
GND
DESCRIPTION
The LT
transients. It regulates the output during an overvoltage
event, such as load dump in automobiles, by controlling
the gate of an external N-channel MOSFET. The output
is limited to a safe value thereby allowing the loads to
continue functioning. The LT4356MP also monitors the
voltage drop between the V
against overcurrent faults. An internal amplifi er limits the
current sense voltage to 50mV. In either fault condition, a
timer is started inversely proportional to MOSFET stress.
If the timer expires, the FLT pin pulls low to warn of an
impending power-down. If the condition persists, the
MOSFET is turned off. After a cooldown period, the GATE
pin pulls up turning on the MOSFET again.
The auxiliary amplifi er may be used as a voltage detection
comparator or as a linear regulator controller driving an
external PNP pass transistor.
Back-to-back FETs can be used in lieu of a Schottky diode
for reverse input protection, reducing voltage drop and
power loss. A shutdown pin reduces the quiescent current
to less than 7μA for the LT4356-1 during shutdown. The
LT4356-2 differs from the LT4356-1 during shutdown by
reducing the quiescent current to 60μA and keeping alive
the auxiliary amplifi er for uses such as an undervoltage
lockout or always-on regulator.
®
LT4356MP-1/LT4356MP-2
4356 surge stopper protects loads from high voltage
20V/DIV
20V/DIV
V
OUT
V
IN
Overvoltage Protector Regulates Output at
12V
12V
80V INPUT SURGE
27V ADJUSTABLE CLAMP
27V During Transient
Surge Stopper
100ms/DIV
CC
and SNS pins to protect
C
I
LOAD
TMR
= 6.8μF
= 500mA
4356mp12 TA01b
4356mp12fa
1

Related parts for LT4356MPMS-1#TR

LT4356MPMS-1#TR Summary of contents

Page 1

... High Side Switch for Battery Powered Systems n Intrinsic Safety Applications L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. Hot Swap and ThinSOT are trademarks of Linear SENSE Technology Corporation. All other trademarks are the property of their respective owners. ...

Page 2

... LT4356MPS-1#PBF LT4356MPS-1#TRPBF LT4356MPS-2#PBF LT4356MPS-2#TRPBF LEAD BASED FINISH TAPE AND REEL LT4356MPMS-1 LT4356MPMS-1#TR LT4356MPS-1 LT4356MPS-1#TR LT4356MPS-2 LT4356MPS-2#TR Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. For more information on lead free part marking, go to: For more information on tape and reel specifi cations, go to: ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T SYMBOL PARAMETER V Operating Voltage Range Supply Current Reverse Input Current R ΔV GATE Pin Output High Voltage GATE I GATE Pin Pull-Up Current ...

Page 4

LT4356MP-1/LT4356MP-2 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T SYMBOL PARAMETER I OUT Pin Input Current OUT ΔV OUT Pin High Threshold OUT SHDN Pin Threshold V SHDN SHDN Pin Float Voltage V SHDN(FLT) SHDN Pin Current I ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS Specifi cations are 12V 25°C unless otherwise noted (Shutdown) vs Temperature CC 35 LT4356 –50 – 100 TEMPERATURE ...

Page 6

LT4356MP-1/LT4356MP-2 TYPICAL PERFORMANCE CHARACTERISTICS Δ GATE 130° –45° 25° –1μA GATE OUT ...

Page 7

PIN FUNCTIONS A (SO Package Only): Amplifi er Output. Open collector OUT output of the auxiliary amplifi er capable of sinking up to 2mA from 80V. The negative input of the amplifi internally connected to a ...

Page 8

LT4356MP-1/LT4356MP-2 BLOCK DIAGRAM 50mV – SHDN A OUT – 1.25V AUXILIARY AMPLIFIER + + IN 8 SNS GATE 14V CHARGE PUMP – OC OUT SHDN CONTROL LOGIC RESTART GATEOFF – 1.35V 0.5V ...

Page 9

OPERATION Some power systems must cope with high voltage surges of short duration such as those in automobiles. Load circuitry must be protected from these transients, yet high availability systems must continue operating during these events. The LT4356 is an ...

Page 10

LT4356MP-1/LT4356MP-2 APPLICATIONS INFORMATION The LT4356 can limit the voltage and current to the load circuitry during supply transients or overcurrent events. The total fault timer period should be set to ride through short overvoltage transients while not causing damage to ...

Page 11

APPLICATIONS INFORMATION Fault Timer Current The timer current starts at around 2μA with 0.5V or less increasing linearly to 50μA with 75V ing an overvoltage fault (Figure 1). During an overcurrent fault, it starts ...

Page 12

LT4356MP-1/LT4356MP-2 APPLICATIONS INFORMATION This fi xed early warning period allows the systems to per- form necessary backup or house-keeping functions before the power supply is cut off. After V TMR threshold, the pass transistor turns off immediately. Note that during ...

Page 13

APPLICATIONS INFORMATION MOSFET stress is the result of power dissipated within the device. For long duration surges of 100ms or more, stress is increasingly dominated by heat transfer; this is a matter of device packaging and mounting, and heatsink thermal ...

Page 14

LT4356MP-1/LT4356MP-2 APPLICATIONS INFORMATION The LTC4356 does not need extra compensation compo- nents at the GATE pin for stability during an overvoltage or overcurrent event. With transient input voltage step faster than 5V/μs, a gate capacitor, C1, to ground is needed ...

Page 15

APPLICATIONS INFORMATION R Q2 SNS 10mΩ IRLR2908 V IN 12V D2* R4 SMAJ58CA Q3 10Ω 2N3904 D1 R7 1N4148 10k 5 SNS LT4356S 7 SHDN 11 A OUT GND TMR 10 1 *DIODES INC. ...

Page 16

LT4356MP-1/LT4356MP-2 APPLICATIONS INFORMATION A total bulk capacitance of at least 22μF low ESR electro- lytic is required close to the source pin of MOSFET Q1. In addition, the bulk capacitance should be at least 10 times larger than the total ...

Page 17

TYPICAL APPLICATIONS Wide Input Range 5V to 28V Hot Swap with Undervoltage Lockout 24V D2* SMAT70A *DIODES INC. LT4356MP-1/LT4356MP SNS 20mΩ SUD50N03- 10Ω 118k 47nF V SNS ...

Page 18

LT4356MP-1/LT4356MP-2 TYPICAL APPLICATIONS V IN D2* SMAJ58A UV RISING = 5.04V *DIODES INC. Overvoltage Regulator with Low Battery Detection and Output Keep Alive During Shutdown V IN 12V D2* SMAJ58A 18 Overvoltage Regulator with Undervoltage Lockout R Q1 SNS 20mΩ ...

Page 19

TYPICAL APPLICATIONS 2.5A, 48V Hot Swap with Overvoltage Output Regulation at 72V and UV Shutdown at 35V V IN 48V D2* SMAT70A 2.5A, 28V Hot Swap with Overvoltage Output Regulation at 36V and UV Shutdown at 15V V IN 28V ...

Page 20

LT4356MP-1/LT4356MP-2 TYPICAL APPLICATIONS Overvoltage Regulator with Reverse Input Protection Up to –80V V IN 12V D1 1N4148 SNS 10mΩ IRLR2908 IRLR2908 D2* R4 SMAJ58CA R5 10Ω 2N3904 SNS GATE CC R7 10k ...

Page 21

PACKAGE DESCRIPTION 5.23 (.206) MIN 0.305 ± 0.038 (.0120 ± .0015) TYP RECOMMENDED SOLDER PAD LAYOUT 0.254 (.010) GAUGE PLANE 0.18 (.007) NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS ...

Page 22

LT4356MP-1/LT4356MP-2 PACKAGE DESCRIPTION .050 BSC N .245 MIN .030 .005 TYP RECOMMENDED SOLDER PAD LAYOUT .010 – .020 45 (0.254 – 0.508) .008 – .010 (0.203 – 0.254) .016 – .050 (0.406 – 1.270) NOTE: INCHES 1. ...

Page 23

... Replaced Figure 6 and text edits in the Applications Information section Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 24

... ADC and I C LTC4352 Ideal MOSFET ORing Diode LTC4354 Negative Voltage Diode-OR Controller LTC4355 Positive Voltage Diode-OR Controller Hot Swap and ThinSOT are trademarks of Linear Technology Corporation. SENSE 24 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● Q2 ...

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