Integrated Circuits (ICs)

LTC4225IUFD-2#PBF

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Analog Devices

DUAL IDEAL DIODE AND HOT SWAP CONTROLLER

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Integrated Circuits (ICs)

LTC4225IUFD-2#PBF

Active

Analog Devices

DUAL IDEAL DIODE AND HOT SWAP CONTROLLER

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DocumentsDatasheet R536 Reliability Data

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LTC4225IUFD-2#PBF

Applications	General Purpose
Current - Supply	2.8 mA
Features	UVLO, Auto Retry
Internal Switch(s)	False
Mounting Type	Surface Mount
Number of Channels [custom]	2
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Package / Case	24-WFQFN Exposed Pad
Programmable Features	Slew Rate, Current Limit, Fault Timeout
Supplier Device Package	24-QFN (4x5)
Type	Hot Swap Controller, OR Controller
Voltage - Supply [Max]	18 V
Voltage - Supply [Min]	2.9 V

LTC4225-1LTC4225-2 Series

Dual Ideal Diode and Hot Swap Controller

Part	Voltage - Supply [Min]	Voltage - Supply [Max]	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Programmable Features	Number of Channels [custom]	Current - Supply	Type	Package / Case	Features	Supplier Device Package	Applications	Package / Case [custom]
Analog Devices LTC4225CUFD-1#PBF	2.9 V	18 V	Surface Mount	70 °C	0 °C	Current Limit Fault Timeout Slew Rate	2	2.8 mA	Hot Swap Controller OR Controller	24-WFQFN Exposed Pad	Latched Fault UVLO	24-QFN (4x5)	General Purpose
Analog Devices LTC4225CGN-1#TRPBF	2.9 V	18 V	Surface Mount	70 °C	0 °C	Current Limit Fault Timeout Slew Rate	2	2.8 mA	Hot Swap Controller OR Controller	24-SSOP	Latched Fault UVLO	24-SSOP	General Purpose	0.154 " 3.9 mm
Analog Devices LTC4225IUFD-2#PBF	2.9 V	18 V	Surface Mount	85 °C	-40 °C	Current Limit Fault Timeout Slew Rate	2	2.8 mA	Hot Swap Controller OR Controller	24-WFQFN Exposed Pad	Auto Retry UVLO	24-QFN (4x5)	General Purpose
Analog Devices LTC4225IGN-1#PBF	2.9 V	18 V	Surface Mount	85 °C	-40 °C	Current Limit Fault Timeout Slew Rate	2	2.8 mA	Hot Swap Controller OR Controller	24-SSOP	Latched Fault UVLO	24-SSOP	General Purpose	0.154 " 3.9 mm
Analog Devices LTC4225IGN-2#TRPBF	2.9 V	18 V	Surface Mount	85 °C	-40 °C	Current Limit Fault Timeout Slew Rate	2	2.8 mA	Hot Swap Controller OR Controller	24-SSOP	Auto Retry UVLO	24-SSOP	General Purpose	0.154 " 3.9 mm

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 12.76
		10	$ 9.01
		25	$ 8.04
		100	$ 6.96
		250	$ 6.44
		500	$ 6.12
		1000	$ 5.90

Description

General part information

LTC4225-1LTC4225-2 Series

The LTC4225 offers ideal diode and Hot Swap™functions for two power rails by controlling external series connected N-channel MOSFETs. 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 LTC4225 regulates the forward voltage drop across the back-to-back 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 switch-over. If the input supply fails or is shorted, a fast turn-off minimizes reverse-current transients.The LTC4225 allows independent on/off control, and reports fault and power good status for the supply. The LTC4225-1 features a latch-off circuit breaker, while the LTC4225-2 provides automatic retry after a fault.ApplicationsRedundant Power SuppliesSupply HoldupMicroTCA Systems and ServersTelecom NetworksPower Prioritizer