Specification	LTC4227IUFD-3#PBF

Applications	General Purpose
Current - Supply	2 mA
Features	UVLO, 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	20-WFQFN Exposed Pad
Programmable Features	Fault Timeout, Current Limit, Slew Rate
Supplier Device Package	20-QFN (4x5)
Type	OR Controller, Hot Swap Controller
Voltage - Supply [Max]	18 V
Voltage - Supply [Min]	2.9 V

LTC4227 Series

Dual Ideal Diode and Single Hot Swap Controller

Part	Features	Current - Supply	Number of Channels [custom]	Package / Case	Supplier Device Package	Type	Voltage - Supply [Max]	Voltage - Supply [Min]	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Applications	Programmable Features	Package / Case [x]	Package / Case [y]
Analog Devices Inc./Maxim Integrated LTC4227IUFD-3#TRPBF	Latched Fault UVLO	2 mA	1	20-WFQFN Exposed Pad	20-QFN (4x5)	Hot Swap Controller OR Controller	18 V	2.9 V	Surface Mount	85 °C	-40 C	General Purpose	Current Limit Fault Timeout Slew Rate
Analog Devices Inc./Maxim Integrated LTC4227IGN-1#TRPBF	Latched Fault UVLO	2 mA	1	16-SSOP	16-SSOP	Hot Swap Controller OR Controller	18 V	2.9 V	Surface Mount	85 °C	-40 C	General Purpose	Current Limit Fault Timeout Slew Rate	0.154 in	3.9 mm
Analog Devices Inc./Maxim Integrated LTC4227IUFD-2#PBF	Auto Retry UVLO	2 mA	1	20-WFQFN Exposed Pad	20-QFN (4x5)	Hot Swap Controller OR Controller	18 V	2.9 V	Surface Mount	85 °C	-40 C	General Purpose	Current Limit Fault Timeout Slew Rate
Analog Devices Inc./Maxim Integrated LTC4227IUFD-1#TRPBF	Latched Fault UVLO	2 mA	1	20-WFQFN Exposed Pad	20-QFN (4x5)	Hot Swap Controller OR Controller	18 V	2.9 V	Surface Mount	85 °C	-40 C	General Purpose	Current Limit Fault Timeout Slew Rate
Analog Devices Inc./Maxim Integrated LTC4227IGN-1#PBF	Latched Fault UVLO	2 mA	1	16-SSOP	16-SSOP	Hot Swap Controller OR Controller	18 V	2.9 V	Surface Mount	85 °C	-40 C	General Purpose	Current Limit Fault Timeout Slew Rate	0.154 in	3.9 mm
Analog Devices Inc./Maxim Integrated LTC4227IUFD-3#PBF	Latched Fault UVLO	2 mA	1	20-WFQFN Exposed Pad	20-QFN (4x5)	Hot Swap Controller OR Controller	18 V	2.9 V	Surface Mount	85 °C	-40 C	General Purpose	Current Limit Fault Timeout Slew Rate
Analog Devices Inc./Maxim Integrated LTC4227IGN-2#TRPBF	Auto Retry UVLO	2 mA	1	16-SSOP	16-SSOP	Hot Swap Controller OR Controller	18 V	2.9 V	Surface Mount	85 °C	-40 C	General Purpose	Current Limit Fault Timeout Slew Rate	0.154 in	3.9 mm
Analog Devices Inc./Maxim Integrated LTC4227IGN-2#PBF	Auto Retry UVLO	2 mA	1	16-SSOP	16-SSOP	Hot Swap Controller OR Controller	18 V	2.9 V	Surface Mount	85 °C	-40 C	General Purpose	Current Limit Fault Timeout Slew Rate	0.154 in	3.9 mm
Analog Devices Inc./Maxim Integrated LTC4227CUFD-2#PBF	Auto Retry UVLO	2 mA	1	20-WFQFN Exposed Pad	20-QFN (4x5)	Hot Swap Controller OR Controller	18 V	2.9 V	Surface Mount	70 °C	0 °C	General Purpose	Current Limit Fault Timeout Slew Rate
Analog Devices Inc./Maxim Integrated LTC4227IUFD-4#TRPBF	Auto Retry UVLO	2 mA	1	20-WFQFN Exposed Pad	20-QFN (4x5)	Hot Swap Controller OR Controller	18 V	2.9 V	Surface Mount	85 °C	-40 C	General Purpose	Current Limit Fault Timeout Slew Rate

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	73	$ 11.62	1m+

Description

General part information

LTC4227 Series

The LTC4227 offers ideal diode-OR and Hot Swap™functions for two power rails by controlling external Nchannel MOSFETs. MOSFETs acting as ideal diodes replace two high power Schottky diodes and the associated heat sinks, saving power and board area. A Hot Swap control MOSFET allows a board 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 LTC4227 regulates the forward voltage drop across the MOSFETs 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 switchover. If the input supply fails or is shorted, a fast turn-off minimizes reverse-current transients.The LTC4227 allows turn-on/off control, and reports fault and power good status for the supply.PartOvercurrent FaultStart-Up DelayLTC4227-1Latch Off100msLTC4227-2Retry100msLTC4227-3Latch Off1.6msLTC4227-4Retry1.6msApplicationsRedundant Power Supplies and Supply HoldupComputer Systems and ServersTelecom Networks

Documents

Technical documentation and resources

R536 Reliability Data

Reliability Data

LTC4227IUFD-3#PBF | Datasheet

Datasheet