LT4250LCN8#PBF

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Analog Devices Inc./Maxim Integrated

NEGATIVE 48V HOT SWAP CONTROLLER

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LT4250LCN8#PBF

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Analog Devices Inc./Maxim Integrated

NEGATIVE 48V HOT SWAP CONTROLLER

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Description Specifications Series Pricing CAD Documents

Description

General part information

LT4250 Series

The LT4250L/LT4250H are 8-pin, negative 48V Hot Swap™controllers that allow a board to be safely inserted and removed from a live backplane. Inrush current is limited to a programmable value by controlling the gate voltage of an external N-channel pass transistor. The pass transistor is turned off if the input voltage is less than the programmable undervoltage threshold or greater than the overvoltage threshold. A programmable current limit protects the system against shorts. After a 500μs timeout the current limit activates the electronic circuit breaker. ThePWRGD(LT4250L) or PWRGD (LT4250H) signal can be used to directly enable a power module. The LT4250L is designed for modules with a low enable input and the LT4250H for modules with a high enable input.The LT4250L/LT4250H are available in 8-pin PDIP and SO packagesApplicationsCentral Office Switching–48V Distributed Power SystemsNegative Power Supply Control

Technical Specifications

Parameters and characteristics for this part

Specification	LT4250LCN8#PBF

Applications	-48V
Current - Supply	1.6 mA
Features	Fault Timeout
Internal Switch(s)	No
Mounting Type	Through Hole
Number of Channels	1
Operating Temperature (Max)	70 °C
Operating Temperature (Min)	0 °C
Package Length	0.3 in
Package Name	8-PDIP, 8-DIP
Package Width	7.62 mm
Programmable Features	Current Limit, Latched Fault, UVLO, OVP
Type	Hot Swap Controller
Voltage - Supply (Maximum)	18 V
Voltage - Supply (Minimum)	-80 V

LT4250 Series

Part	Voltage - Supply (Maximum)	Voltage - Supply (Minimum)	Package Length	Package Name	Package Width	Type	Features	Current - Supply	Applications	Internal Switch(s)	Mounting Type	Operating Temperature (Max)	Operating Temperature (Min)	Number of Channels	Programmable Features
Analog Devices Inc./Maxim Integrated LT4250HCN8#PBF	18 V	-80 V	0.3 in	8-DIP 8-PDIP	7.62 mm	Hot Swap Controller	Fault Timeout	1.6 mA	-48V	No	Through Hole	70 °C	0 °C	1	Current Limit Latched Fault OVP UVLO
Analog Devices Inc./Maxim Integrated LT4250HCS8#TRPBF	18 V	-80 V	0.154 in	8-SO 8-SOIC	3.9 mm	Hot Swap Controller	Fault Timeout	1.6 mA	-48V	No	Surface Mount	70 °C	0 °C	1	Current Limit Latched Fault OVP UVLO
Analog Devices Inc./Maxim Integrated LT4250LCN8#PBF	18 V	-80 V	0.3 in	8-DIP 8-PDIP	7.62 mm	Hot Swap Controller	Fault Timeout	1.6 mA	-48V	No	Through Hole	70 °C	0 °C	1	Current Limit Latched Fault OVP UVLO
Analog Devices Inc./Maxim Integrated LT4250LCN8#PBF	18 V	-80 V	0.3 in	8-DIP 8-PDIP	7.62 mm	Hot Swap Controller	Fault Timeout	1.6 mA	-48V	No	Through Hole	70 °C	0 °C	1	Current Limit Latched Fault OVP UVLO
Analog Devices Inc./Maxim Integrated LT4250LCS8#TRPBF	18 V	-80 V	0.154 in	8-SO 8-SOIC	3.9 mm	Hot Swap Controller	Fault Timeout	1.6 mA	-48V	No	Surface Mount	70 °C	0 °C	1	Current Limit Latched Fault OVP UVLO
Analog Devices Inc./Maxim Integrated LT4250HCN8#PBF	18 V	-80 V	0.3 in	8-DIP 8-PDIP	7.62 mm	Hot Swap Controller	Fault Timeout	1.6 mA	-48V	No	Through Hole	70 °C	0 °C	1	Current Limit Latched Fault OVP UVLO
Analog Devices Inc./Maxim Integrated LT4250LIS8#PBF	18 V	-80 V	0.154 in	8-SO 8-SOIC	3.9 mm	Hot Swap Controller	Fault Timeout	1.6 mA	-48V	No	Surface Mount	85 °C	-40 °C	1	Current Limit Latched Fault OVP UVLO
Analog Devices Inc./Maxim Integrated LT4250LIS8#TRPBF	18 V	-80 V	0.154 in	8-SO 8-SOIC	3.9 mm	Hot Swap Controller	Fault Timeout	1.6 mA	-48V	No	Surface Mount	85 °C	-40 °C	1	Current Limit Latched Fault OVP UVLO
Analog Devices Inc./Maxim Integrated LT4250LIN8#PBF	18 V	-80 V	0.3 in	8-DIP 8-PDIP	7.62 mm	Hot Swap Controller	Fault Timeout	1.6 mA	-48V	No	Through Hole	85 °C	-40 °C	1	Current Limit Latched Fault OVP UVLO
Analog Devices Inc./Maxim Integrated LT4250HIS8#PBF	18 V	-80 V	0.154 in	8-SO 8-SOIC	3.9 mm	Hot Swap Controller	Fault Timeout	1.6 mA	-48V	No	Surface Mount	85 °C	-40 °C	1	Current Limit Latched Fault OVP UVLO

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LT4250LCN8#PBF | Datasheet

R375 Reliability Data

Package Drawing - 8-Lead PDIP (Narrow 0.3 Inch)