LTC4353CDE#TRPBF

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Analog Devices Inc./Maxim Integrated

DUAL LOW VOLTAGE IDEAL DIODE CONTROLLER

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LTC4353CDE#TRPBF

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Analog Devices Inc./Maxim Integrated

DUAL LOW VOLTAGE IDEAL DIODE CONTROLLER

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Description Specifications Series Pricing CAD Documents

Description

General part information

LTC4353 Series

The LTC4353 controls external N-channel MOSFETs to implement an ideal diode function. It replaces two high power Schottky diodes and their associated heat sinks, saving power and board area. The ideal diode function permits low loss power supply ORing and supply holdup applications.The LTC4353 regulates the forward-voltage drop across the MOSFET to ensure smooth current transfer in diode-OR applications. A fast turn-on reduces the load voltage droop during supply switchover. If the input supply fails or is shorted, a fast turn-off minimizes reverse-current transients.The controller operates with supplies from 2.9V to 18V. If both supplies are below 2.9V, an external supply is needed at the VCCpin. Enable inputs can be used to turn off the MOSFET and put the controller in a low current state. Status outputs indicate whether the MOSFETs are on or off.ApplicationsRedundant Power SuppliesSupply HoldupHigh Availability Systems and ServersTelecom and Network Infrastructure

Technical Specifications

Parameters and characteristics for this part

Specification	LTC4353CDE#TRPBF

Applications	Telecom Infrastructure, Redundant Power Supplies
Current - Supply	1.5 mA
Delay Time - OFF	300 ns
Delay Time - ON	400 ns
FET Type	N-Channel
Input Ratio	2
Internal Switch(s)	No
Mounting Type	Surface Mount
Operating Temperature (Max)	70 °C
Operating Temperature (Min)	0 °C
Output Ratio	2
Package / Case	16-WFDFN Exposed Pad
Package Length	4 mm
Package Name	16-DFN
Package Width	3 mm
Type	Current Sharing Controller
Voltage - Supply (Maximum)	18 V
Voltage - Supply (Minimum)	2.9 V

LTC4353 Series

Dual Low Voltage Ideal Diode Controller

Part	Mounting Type	Delay Time - OFF	Internal Switch(s)	Delay Time - ON	Current - Supply	Package / Case	FET Type	Package Length	Package Name	Package Width	Voltage - Supply (Maximum)	Voltage - Supply (Minimum)	Applications	Operating Temperature (Max)	Operating Temperature (Min)	Input Ratio	Output Ratio	Type
Analog Devices Inc./Maxim Integrated LTC4353CDE#TRPBF	Surface Mount	300 ns	No	400 ns	1.5 mA	16-WFDFN Exposed Pad	N-Channel	4 mm	16-DFN	3 mm	18 V	2.9 V	Redundant Power Supplies Telecom Infrastructure	70 °C	0 °C	2	2	Current Sharing Controller
Analog Devices Inc./Maxim Integrated LTC4353IMS#TRPBF	Surface Mount	300 ns	No	400 ns	1.5 mA		N-Channel	0.118 in	16-MSOP 16-TFSOP	3 mm	18 V	2.9 V	Redundant Power Supplies Telecom Infrastructure	85 °C	-40 °C	2	2	Current Sharing Controller
Analog Devices Inc./Maxim Integrated LTC4353CDE#PBF	Surface Mount	300 ns	No	400 ns	1.5 mA	16-WFDFN Exposed Pad	N-Channel	4 mm	16-DFN	3 mm	18 V	2.9 V	Redundant Power Supplies Telecom Infrastructure	70 °C	0 °C	2	2	Current Sharing Controller
Analog Devices Inc./Maxim Integrated LTC4353IDE#TRPBF	Surface Mount	300 ns	No	400 ns	1.5 mA	16-WFDFN Exposed Pad	N-Channel	4 mm	16-DFN	3 mm	18 V	2.9 V	Redundant Power Supplies Telecom Infrastructure	85 °C	-40 °C	2	2	Current Sharing Controller
Analog Devices Inc./Maxim Integrated LTC4353IDE#PBF	Surface Mount	300 ns	No	400 ns	1.5 mA	16-WFDFN Exposed Pad	N-Channel	4 mm	16-DFN	3 mm	18 V	2.9 V	Redundant Power Supplies Telecom Infrastructure	85 °C	-40 °C	2	2	Current Sharing Controller
Analog Devices Inc./Maxim Integrated LTC4353CMS#PBF	Surface Mount	300 ns	No	400 ns	1.5 mA		N-Channel	0.118 in	16-MSOP 16-TFSOP	3 mm	18 V	2.9 V	Redundant Power Supplies Telecom Infrastructure	70 °C	0 °C	2	2	Current Sharing Controller
Analog Devices Inc./Maxim Integrated LTC4353CMS#TRPBF	Surface Mount	300 ns	No	400 ns	1.5 mA		N-Channel	0.118 in	16-MSOP 16-TFSOP	3 mm	18 V	2.9 V	Redundant Power Supplies Telecom Infrastructure	70 °C	0 °C	2	2	Current Sharing Controller
Analog Devices Inc./Maxim Integrated LTC4353IMS#PBF	Surface Mount	300 ns	No	400 ns	1.5 mA		N-Channel	0.118 in	16-MSOP 16-TFSOP	3 mm	18 V	2.9 V	Redundant Power Supplies Telecom Infrastructure	85 °C	-40 °C	2	2	Current Sharing Controller

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

R536 Reliability Data

LTC4353CDE#TRPBF | Datasheet