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Datasheet> All Categories > Power/power management> The power supply circuit> LTC4253IGN#PBF
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LTC4253IGN#PBF

Description
IC HOT SWAP CONTRLR -48V 16-SSOP
CategoryPower/power management    The power supply circuit   
File Size384KB，34 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
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LTC4253IGN#PBF Overview

IC HOT SWAP CONTRLR -48V 16-SSOP

LTC4253IGN#PBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
MakerLinear ( ADI )
Parts packaging codeSSOP
package instructionSSOP, SSOP16,.25
Contacts16
Manufacturer packaging codeGN
Reach Compliance Codecompliant
ECCN codeEAR99
Adjustable thresholdYES
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeR-PDSO-G16
JESD-609 codee3
length4.8895 mm
Humidity sensitivity level1
Number of channels1
Number of functions1
Number of terminals16
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeSSOP
Encapsulate equivalent codeSSOP16,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height1.75 mm
Maximum supply current (Isup)2 mA
Maximum supply voltage (Vsup)14.5 V
Minimum supply voltage (Vsup)11.5 V
Nominal supply voltage (Vsup)13 V
surface mountYES
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch0.635 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width3.899 mm

Preview

Download Datasheet
LTC4253/LTC4253A
–48V Hot Swap Controllers
with Sequencer
FEATURES
n
n
DESCRIPTION
The
LTC
®
4253/LTC4253A
negative voltage Hot Swap™
controllers allow a board to be safely inserted and removed
from a live backplane. Output current is controlled by three
stages of current-limiting: a timed circuit breaker, active
current limiting and a fast feedforward path that limits
peak current under worst-case catastrophic fault condi-
tions. The LTC4253/LTC4253A latch off after a circuit fault.
Adjustable undervoltage and overvoltage detectors dis-
connect the load whenever the input supply exceeds the
desired operating range. The LTC4253/LTC4253A’s supply
input is shunt-regulated, allowing safe operation with very
high supply voltages. A multifunction timer delays initial
start-up and controls the circuit breaker’s response time.
The circuit breaker’s response time can be accelerated
by sensing excessive MOSFET drain voltage, keeping the
MOSFET within its safe operating area (SOA). An adjustable
soft-start circuit controls MOSFET inrush current at start-up.
Three power good outputs are sequenced by an adjustable
timer and two ENABLE inputs to enable external power
modules at start-up or disable them if the circuit breaker
trips. The LTC4253A features tight ±1% undervoltage/
overvoltage threshold accuracy. The LTC4253/LTC4253A
are available in a 16-pin SSOP
.
n
n
n
n
n
n
n
n
Allows Safe Board Insertion and Removal from a
Live –48V Backplane
Floating Topology Permits Very High Voltage
Operation
Adjustable Analog Current Limit with Breaker Timer
Ideal for Two Battery Feeds
Fast Response Time Limits Peak Fault Current
Adjustable Undervoltage/Overvoltage Protection
with ±1% Threshold Accuracy (LTC4253A)
Three Sequenced Power Good Outputs
Adjustable Soft-Start Current Limit
Adjustable Timer with Drain Voltage Accelerated
Response
Latchoff After Fault
Available in a 16-Pin SSOP Package
APPLICATIONS
n
n
n
n
n
–48V Distributed Power Systems
Negative Power Supply Control
Central Office Switching
High Availability Servers
Disk Arrays
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Hot
Swap is a trademark of Linear Technology Corporation. All other trademarks are the property of
their respective owners.
TYPICAL APPLICATION
– 48V/2.5A Hot Swap Controller
– 48V RTN
1µF
– 48V RTN
402k
1%
10nF
EN2 EN3 V
IN
D
IN††
LTC4253
DDZ13B*
RESET
UV
OV
32.4k
1%
68nF
0.1µF
– 48V A
B3100*
0.33µF
SS
SQTIMER
TIMER
PWRGD1
PWRGD2
PWRGD3
DRAIN
GATE
SENSE
10
18nF
0.02
1M
IRF530S
*DIODES, INC.
†
MOC207
††
RECOMMENDED FOR HARSH ENVIRONMENTS.
V
OUT
50V
1ms/DIV
4253 TA01b
2.5k
15k(1/4W)/6
5.6k
V
IN
5.6k
100µF
5.6k
+
Start-Up Behavior
LOAD1
LOAD2
EN
EN
EN
LOAD3
GATE
10V
†
†
†
SS
1V
4253 TA01
SENSE
50mV
V
EE
– 48V B
B3100*
425353aff
For more information
www.linear.com/4253
1

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Description IC HOT SWAP CONTRLR -48V 16-SSOP IC hot swap contrlr -48v 16-ssop IC hot swap contrlr -48v 16-ssop IC HOT SWAP CONTRLR -48V 16-SSOP IC HOT SWAP CONTRLR -48V 16-SSOP IC HOT SWAP CONTRLR -48V 16-SSOP IC HOT SWAP CONTRLR -48V 16-SSOP IC HOT SWAP CONTRLR -48V 16-SSOP IC HOT SWAP CONTRLR -48V 16-SSOP IC HOT SWAP CONTRLR -48V 16-SSOP
Is it Rohs certified? conform to incompatible incompatible conform to conform to conform to conform to conform to conform to conform to
Maker Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI )
Parts packaging code SSOP SSOP SSOP SSOP SSOP SOIC SOIC SOIC SOIC SSOP
package instruction SSOP, SSOP16,.25 SSOP, SSOP16,.25 SSOP, SSOP16,.25 SSOP, SSOP16,.25 SSOP, SSOP16,.25 SSOP, SSOP16,.25 SSOP, SSOP16,.25 SSOP, SSOP16,.25 SSOP, SSOP16,.25 SSOP, SSOP16,.25
Contacts 16 16 16 16 16 16 16 16 16 16
Reach Compliance Code compliant _compli _compli compliant compliant compliant compliant compliant compliant compliant
ECCN code EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Adjustable threshold YES YES YES YES YES YES YES YES YES YES
Analog Integrated Circuits - Other Types POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code R-PDSO-G16 R-PDSO-G16 R-PDSO-G16 R-PDSO-G16 R-PDSO-G16 R-PDSO-G16 R-PDSO-G16 R-PDSO-G16 R-PDSO-G16 R-PDSO-G16
JESD-609 code e3 e0 e0 e3 e3 e3 e3 e3 e3 e3
length 4.8895 mm 4.8895 mm 4.8895 mm 4.8895 mm 4.8895 mm 4.8895 mm 4.8895 mm 4.8895 mm 4.8895 mm 4.8895 mm
Humidity sensitivity level 1 1 1 1 1 1 1 1 1 1
Number of channels 1 1 1 1 1 1 1 1 1 1
Number of functions 1 1 1 1 1 1 1 1 1 1
Number of terminals 16 16 16 16 16 16 16 16 16 16
Maximum operating temperature 85 °C 85 °C 70 °C 85 °C 70 °C 85 °C 70 °C 85 °C 70 °C 70 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SSOP SSOP SSOP SSOP SSOP SSOP SSOP SSOP SSOP SSOP
Encapsulate equivalent code SSOP16,.25 SSOP16,.25 SSOP16,.25 SSOP16,.25 SSOP16,.25 SSOP16,.25 SSOP16,.25 SSOP16,.25 SSOP16,.25 SSOP16,.25
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius) 260 235 235 260 260 250 250 250 250 260
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height 1.75 mm 1.75 mm 1.75 mm 1.75 mm 1.75 mm 1.75 mm 1.75 mm 1.75 mm 1.75 mm 1.75 mm
Maximum supply current (Isup) 2 mA 2 mA 2 mA 2 mA 2 mA 2 mA 2 mA 2 mA 2 mA 2 mA
Maximum supply voltage (Vsup) 14.5 V 14.5 V 14.5 V 14.5 V 14.5 V 14.5 V 14.5 V 14.5 V 14.5 V 14.5 V
Minimum supply voltage (Vsup) 11.5 V 11.5 V 11.5 V 11.5 V 11.5 V 11.5 V 11.5 V 11.5 V 11.5 V 11.5 V
Nominal supply voltage (Vsup) 13 V 13 V 13 V 13 V 13 V 13 V 13 V 13 V 13 V 13 V
surface mount YES YES YES YES YES YES YES YES YES YES
technology CMOS CMOS CMOS CMOS CMOS CMOS CMOS CMOS CMOS CMOS
Temperature level INDUSTRIAL INDUSTRIAL COMMERCIAL INDUSTRIAL COMMERCIAL INDUSTRIAL COMMERCIAL INDUSTRIAL COMMERCIAL COMMERCIAL
Terminal surface Matte Tin (Sn) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn)
Terminal form GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING
Terminal pitch 0.635 mm 0.635 mm 0.635 mm 0.635 mm 0.635 mm 0.635 mm 0.635 mm 0.635 mm 0.635 mm 0.635 mm
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature 30 20 20 30 30 40 40 40 40 30
width 3.899 mm 3.899 mm 3.899 mm 3.899 mm 3.899 mm 3.899 mm 3.899 mm 3.899 mm 3.899 mm 3.899 mm
Brand Name Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology - - - - Linear Technology
Manufacturer packaging code GN GN GN GN GN - - - - GN

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