Specification	LT4256-1IS8#TRPBF

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]	85 °C
Operating Temperature [Min]	-40 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

LT4256-1LT4256-2 Series

Part	Voltage - Supply [Max]	Voltage - Supply [Min]	Applications	Features	Type	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Programmable Features	Number of Channels [custom]	Package / Case	Package / Case	Package / Case	Current - Supply	Mounting Type
Analog Devices Inc./Maxim Integrated LT4256-1IS8#TRPBF	80 V	10.8 VDC	General Purpose	Latched Fault	Hot Swap Controller	85 °C	-40 C	8-SO	Current Limit Fault Timeout Slew Rate UVLO	1	0.154 in	8-SOIC	3.9 mm	1.8 mA	Surface Mount
Analog Devices Inc./Maxim Integrated LT4256-2IS8#TRPBF	80 V	10.8 VDC	General Purpose	Auto Retry	Hot Swap Controller	85 °C	-40 C	8-SO	Current Limit Fault Timeout Slew Rate UVLO	1	0.154 in	8-SOIC	3.9 mm	1.8 mA	Surface Mount
Analog Devices Inc./Maxim Integrated LT4256-2CS8#TRPBF	80 V	10.8 VDC	General Purpose	Auto Retry	Hot Swap Controller	70 °C	0 °C	8-SO	Current Limit Fault Timeout Slew Rate UVLO	1	0.154 in	8-SOIC	3.9 mm	1.8 mA	Surface Mount
Analog Devices Inc./Maxim Integrated LT4256-2IS8#PBF	80 V	10.8 VDC	General Purpose	Auto Retry	Hot Swap Controller	85 °C	-40 C	8-SO	Current Limit Fault Timeout Slew Rate UVLO	1	0.154 in	8-SOIC	3.9 mm	1.8 mA	Surface Mount
Analog Devices Inc./Maxim Integrated LT4256-1IS8#PBF	80 V	10.8 VDC	General Purpose	Latched Fault	Hot Swap Controller	85 °C	-40 C	8-SO	Current Limit Fault Timeout Slew Rate UVLO	1	0.154 in	8-SOIC	3.9 mm	1.8 mA	Surface Mount
Analog Devices Inc./Maxim Integrated LT4256-1CS8#TRPBF	80 V	10.8 VDC	General Purpose	Latched Fault	Hot Swap Controller	70 °C	0 °C	8-SO	Current Limit Fault Timeout Slew Rate UVLO	1	0.154 in	8-SOIC	3.9 mm	1.8 mA	Surface Mount
Analog Devices Inc./Maxim Integrated LT4256-2CS8#PBF	80 V	10.8 VDC	General Purpose	Auto Retry	Hot Swap Controller	70 °C	0 °C	8-SO	Current Limit Fault Timeout Slew Rate UVLO	1	0.154 in	8-SOIC	3.9 mm	1.8 mA	Surface Mount

Pricing

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

Distributor	Package	Quantity	$	Updated

Digikey	N/A	3362	$ 7.91	1m+

Description

General part information

LT4256-1LT4256-2 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

Documents

Technical documentation and resources

R568 Reliability Data

Reliability Data

LT4256-1IS8#TRPBF | Datasheet

Datasheet