LTC4253AIGN#PBF datasheet, PDF

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LTC4253AIGN#PBF: DescriptionIC 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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LTC4253AIGN#PBF Overview

IC HOT SWAP CONTRLR -48V 16-SSOP

LTC4253AIGN#PBF Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	Linear ( ADI )
Parts packaging code	SOIC
package instruction	SSOP, SSOP16,.25
Contacts	16
Reach Compliance Code	compliant
ECCN code	EAR99
Adjustable threshold	YES
Analog Integrated Circuits - Other Types	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code	R-PDSO-G16
JESD-609 code	e3
length	4.8895 mm
Humidity sensitivity level	1
Number of channels	1
Number of functions	1
Number of terminals	16
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	SSOP
Encapsulate equivalent code	SSOP16,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	250
Certification status	Not Qualified
Maximum seat height	1.75 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 mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal surface	Matte Tin (Sn)
Terminal form	GULL WING
Terminal pitch	0.635 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	40
width	3.899 mm

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LTC4253/LTC4253A

–48V Hot Swap Controllers

with Sequencer

FEATURES

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

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

–48V Distributed Power Systems

Negative Power Supply Control

Central Office Switching

High Availability Servers

Disk Arrays

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

10nF

EN2 EN3 V

IN††

LTC4253

DDZ13B*

RESET

32.4k

68nF

0.1µF

– 48V A

B3100*

0.33µF

SQTIMER

TIMER

PWRGD1

PWRGD2

PWRGD3

DRAIN

GATE

SENSE

18nF

0.02

IRF530S

*DIODES, INC.

†

MOC207

††

RECOMMENDED FOR HARSH ENVIRONMENTS.

OUT

50V

1ms/DIV

4253 TA01b

2.5k

15k(1/4W)/6

5.6k

100µF

5.6k

Start-Up Behavior

LOAD1

LOAD2

LOAD3

GATE

10V

†

4253 TA01

SENSE

50mV

– 48V B

B3100*

425353aff

For more information

www.linear.com/4253

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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	SOIC	SSOP	SSOP	SSOP	SSOP	SSOP	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)	250	235	235	260	260	260	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	40	20	20	30	30	30	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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