LTC4228IUFD-1#PBF

Active

Analog Devices Inc./Maxim Integrated

HOT SWAP CONTROLLER 2-CH 18V N-CHANNEL POSITIVE VOLTAGE 28-PIN QFN EP TUBE

Find alt

Alpha

LTC4228IUFD-1#PBF

Active

Analog Devices Inc./Maxim Integrated

HOT SWAP CONTROLLER 2-CH 18V N-CHANNEL POSITIVE VOLTAGE 28-PIN QFN EP TUBE

Find alt

Alpha

Description Specifications Series Pricing CAD Documents

Description

General part information

LTC4228-1LTC4228-2 Series

The LTC4228 offers ideal diode and Hot Swap™functions for two power rails by controlling two external N-channel MOSFETs in each rail. MOSFETs acting as ideal diodes replace two high power Schottky diodes and the associated heat sinks, saving power and board area. Hot Swap control MOSFETs allow boards to be safely inserted and removed from a live backplane by limiting inrush current. The supply output is also protected against short-circuit faults with a fast acting current limit and internal timed circuit breaker.The LTC4228 regulates the forward voltage drop across the external MOSFETs and sense resistor to ensure smooth current transfer from one supply to the other without oscillation. The ideal diodes turn on quickly to reduce the load voltage droop during supply switch-over. If the input supply fails or is shorted, a fast turn-off minimizes reverse-current transients.The LTC4228 allows independent on/off control, and reports fault and power good status for the supply. The LTC4228 improves on the LTC4225 by recovering more quickly from input brownouts to preserve the output voltage.ApplicationsRedundant Power SuppliesMicroTCA Systems and ServersTelecom NetworksPower Prioritizer

Technical Specifications

Parameters and characteristics for this part

Specification	LTC4228IUFD-1#PBF

Applications	General Purpose
Current - Supply	2.5 mA
Features	Latched Fault, UVLO
Internal Switch(s)	No
Mounting Type	Surface Mount
Number of Channels	2
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Package / Case	28-WFQFN Exposed Pad
Package Length	4 mm
Package Name	28-QFN
Package Width	5 mm
Programmable Features	Fault Timeout, Slew Rate, Current Limit
Type	OR Controller, Hot Swap Controller
Voltage - Supply (Maximum)	18 V
Voltage - Supply (Minimum)	2.9 V

LTC4228-1LTC4228-2 Series

Part	Mounting Type	Programmable Features	Current - Supply	Package Name	Operating Temperature (Max)	Operating Temperature (Min)	Type	Package Length	Package Width	Applications	Voltage - Supply (Maximum)	Voltage - Supply (Minimum)	Features	Number of Channels	Internal Switch(s)	Package / Case
Analog Devices Inc./Maxim Integrated LTC4228CGN-1#TRPBF	Surface Mount	Current Limit Fault Timeout Slew Rate	2.5 mA	28-SSOP	70 °C	0 °C	Hot Swap Controller OR Controller	0.154 in	3.9 mm	General Purpose	18 V	2.9 V	Latched Fault UVLO	2	No
Analog Devices Inc./Maxim Integrated LTC4228IGN-2#PBF	Surface Mount	Current Limit Fault Timeout Slew Rate	2.5 mA	28-SSOP	85 °C	-40 °C	Hot Swap Controller OR Controller	0.154 in	3.9 mm	General Purpose	18 V	2.9 V	Auto Retry UVLO	2	No
Analog Devices Inc./Maxim Integrated LTC4228IUFD-2#PBF	Surface Mount	Current Limit Fault Timeout Slew Rate	2.5 mA	28-QFN	85 °C	-40 °C	Hot Swap Controller OR Controller	4 mm	5 mm	General Purpose	18 V	2.9 V	Auto Retry UVLO	2	No	28-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC4228CUFD-1#TRPBF	Surface Mount	Current Limit Fault Timeout Slew Rate	2.5 mA	28-QFN	70 °C	0 °C	Hot Swap Controller OR Controller	4 mm	5 mm	General Purpose	18 V	2.9 V	Latched Fault UVLO	2	No	28-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC4228CUFD-2#TRPBF	Surface Mount	Current Limit Fault Timeout Slew Rate	2.5 mA	28-QFN	70 °C	0 °C	Hot Swap Controller OR Controller	4 mm	5 mm	General Purpose	18 V	2.9 V	Auto Retry UVLO	2	No	28-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC4228CGN-1#PBF	Surface Mount	Current Limit Fault Timeout Slew Rate	2.5 mA	28-SSOP	70 °C	0 °C	Hot Swap Controller OR Controller	0.154 in	3.9 mm	General Purpose	18 V	2.9 V	Latched Fault UVLO	2	No
Analog Devices Inc./Maxim Integrated LTC4228IGN-1#PBF	Surface Mount	Current Limit Fault Timeout Slew Rate	2.5 mA	28-SSOP	85 °C	-40 °C	Hot Swap Controller OR Controller	0.154 in	3.9 mm	General Purpose	18 V	2.9 V	Latched Fault UVLO	2	No
Analog Devices Inc./Maxim Integrated LTC4228IUFD-2#TRPBF	Surface Mount	Current Limit Fault Timeout Slew Rate	2.5 mA	28-QFN	85 °C	-40 °C	Hot Swap Controller OR Controller	4 mm	5 mm	General Purpose	18 V	2.9 V	Auto Retry UVLO	2	No	28-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC4228IUFD-1#PBF	Surface Mount	Current Limit Fault Timeout Slew Rate	2.5 mA	28-QFN	85 °C	-40 °C	Hot Swap Controller OR Controller	4 mm	5 mm	General Purpose	18 V	2.9 V	Latched Fault UVLO	2	No	28-WFQFN Exposed Pad
Analog Devices Inc./Maxim Integrated LTC4228IUFD-1#TRPBF	Surface Mount	Current Limit Fault Timeout Slew Rate	2.5 mA	28-QFN	85 °C	-40 °C	Hot Swap Controller OR Controller	4 mm	5 mm	General Purpose	18 V	2.9 V	Latched Fault UVLO	2	No	28-WFQFN Exposed Pad

Pricing

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

Create a free account to access distributor pricing data.

CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LTC4228IUFD-1#PBF | Datasheet

R536 Reliability Data