Integrated Circuits (ICs)

LT4256-1CS8#PBF

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Analog Devices Inc./Maxim Integrated

HOT SWAP CONTROLLER 1-CH 80V N-CHANNEL POSITIVE HIGH VOLTAGE 8-PIN SOIC N TUBE

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DocumentsR568 Reliability Data Datasheet

Integrated Circuits (ICs)

LT4256-1CS8#PBF

Active

Analog Devices Inc./Maxim Integrated

HOT SWAP CONTROLLER 1-CH 80V N-CHANNEL POSITIVE HIGH VOLTAGE 8-PIN SOIC N TUBE

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DocumentsR568 Reliability Data Datasheet

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LT4256-1CS8#PBF

Applications	General Purpose
Current - Supply	1.8 mA
Features	Latched Fault
Internal Switch(s)	False
Mounting Type	Surface Mount
Number of Channels [custom]	1
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Package / Case	0.154 in
Package / Case	8-SOIC
Package / Case	3.9 mm
Programmable Features	Fault Timeout, Slew Rate, UVLO, Current Limit
Supplier Device Package	8-SO
Type	Hot Swap Controller
Voltage - Supply [Max]	80 V
Voltage - Supply [Min]	10.8 VDC

LT4256 Series

Positive High Voltage Hot Swap Controllers

Part	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Package / Case	Package / Case	Number of Channels [custom]	Mounting Type	Features	Applications	Current - Supply	Voltage - Supply [Max]	Voltage - Supply [Min]	Type	Programmable Features	Secondary Attributes	Primary Attributes	Contents	Utilized IC / Part	Package / Case [x]	Package / Case [y]
Analog Devices Inc./Maxim Integrated LT4256-1CS8#PBF	8-SO	70 °C	0 °C	0.154 in	8-SOIC	3.9 mm	1	Surface Mount	Latched Fault	General Purpose	1.8 mA	80 V	10.8 VDC	Hot Swap Controller	Current Limit Fault Timeout Slew Rate UVLO
Analog Devices Inc./Maxim Integrated DC1354A-B														Power Management		On-Board LEDs	Auto-Retry	Board(s)	LT4256-2
Analog Devices Inc./Maxim Integrated LT4256-3CGN#PBF	16-SSOP	70 °C	0 °C		16-SSOP		1	Surface Mount		General Purpose	1.8 mA	80 V	10.8 VDC	Hot Swap Controller	Auto Retry Current Limit Fault Timeout Latched Fault OVP Slew Rate UVLO					0.154 in	3.9 mm
Analog Devices Inc./Maxim Integrated DC1354A-A														Power Management		On-Board LEDs	Latch-Off	Board(s)	LT4256-1

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$	Updated

Arrow	N/A	200	$ 3.09	1m+
Digikey	N/A	535	$ 7.18	1m+
	Tube	1	$ 7.45	1m+
		10	$ 5.08
		25	$ 4.47
		100	$ 3.79
		250	$ 3.45
		500	$ 3.25
		1000	$ 3.08
		2500	$ 2.92

Description

General part information

LT4256 Series

The LT4256-1/LT4256-2 are high voltage Hot Swap™controllers that allow a board to be safely inserted and removed from a live backplane. An internal driver drives an external N-channel MOSFET switch to control supply voltages ranging from 10.8V to 80V.The LT4256-1/LT4256-2 features an adjustable analog foldback current limit. If the supply remains in current limit for more than a programmable time, the N-channel MOSFET shuts off and the PWRGD output asserts low. The LT4256-2 automatically restarts after a time-out delay. The LT4256-1 latches off until the UV pin is cycled low.The PWRGD output indicates when the output voltage rises above a programmed level. An external resistor string from VCCprovides programmable undervoltage protection.The LT4256 can be used as an upgrade to LT1641 designs.The LT4256-1 and LT4256-2 are available in an 8-pin SO package that is pin compatible with the LT1641.Retry / Latch OffFeaturesPackageLT4256-1Latch OffUVSO-8LT4256-2RetryUVSO-8LT4256-3Latch Off or RetryUV/OV, Open Circuit DetectSSOP-16ApplicationsHot Board InsertionElectronic Circuit Breaker/Power BussingIndustrial High Side Switch/Circuit Breaker24V/48V Industrial/Alarm SystemsIdeally Suited for 12V, 24V and 48V Distributed Power Systems48V Telecom Systems