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Description

General part information

LTC4450 Series

The LTC4450 is a high performance Schottky diode replacement using an integrated N-Channel power MOSFET. It easily ORs power supplies together to increase system reliability and prevent reverse conduction.The LTC4450 regulates the forward voltage at 15mV to minimize power loss compared to Schottky diodes. Regulation ensures smooth current transfer without oscillation in diode-OR applications. When the power MOSFET is fully enhanced, the RDS(ON)of the transistor is 7mΩ and rated for forward conduction up to 12A while dissipating 1W. A high performance gate driver with fast transient response minimizes both forward power dissipation and reverse current. The VCCinput allows VINto work down to ground for low voltage applications. The LTC4450 is available in a small 16-Lead 2mm × 3mm LQFN Package.APPLICATIONSSchottky Diode ReplacementIndustrial, Medical and Consumer Portable DevicesBattery and Wall Adapter Diode-ORing

Technical Specifications

Parameters and characteristics for this part

SpecificationLTC4450AV#TRMPBF
ApplicationsIndustrial
Current - Output (Max)20 A
Current - Supply20 µA
Delay Time - OFF450 ns
Delay Time - ON300 ns
FET TypeN-Channel
Input Ratio1
Internal Switch(s)Yes
Mounting TypeSurface Mount
Operating Temperature (Max)125 °C
Operating Temperature (Min)-40 °C
Output Ratio1
Package / Case16-PowerVFQFN
Package Length2 mm
Package Name16-LQFN
Package Width3 mm
TypeN+1 ORing Controller
Voltage - Supply (Maximum)5.5 V
Voltage - Supply (Minimum)2.75 V

Pricing

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CAD

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