LTC4449EDCB

Obsolete

Analog Devices

IC GATE DRVR HALF-BRIDGE 8DFN

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LTC4449EDCB

Obsolete

Analog Devices

IC GATE DRVR HALF-BRIDGE 8DFN

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Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LTC4449EDCB

Channel Type	Synchronous
Current - Peak Output (Source, Sink) [custom]	4.5 A
Current - Peak Output (Source, Sink) [custom]	3.2 A
Driven Configuration	Half-Bridge
Gate Type	N-Channel MOSFET
High Side Voltage - Max (Bootstrap) [Max]	42 V
Input Type	Non-Inverting
Logic Voltage - VIL, VIH [custom]	6.5 V
Logic Voltage - VIL, VIH [custom]	3 V
Mounting Type	Surface Mount
Number of Drivers	2
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Package / Case	8-WFDFN Exposed Pad
Rise / Fall Time (Typ) [custom]	7 ns
Rise / Fall Time (Typ) [custom]	8 ns
Supplier Device Package	8-DFN (2x3)
Voltage - Supply [Max]	6.5 V
Voltage - Supply [Min]	4 V

LTC4449 Series

High Speed Synchronous N-Channel MOSFET Driver

Part	Logic Voltage - VIL, VIH [custom]	Logic Voltage - VIL, VIH [custom]	Driven Configuration	Mounting Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Current - Peak Output (Source, Sink) [custom]	Current - Peak Output (Source, Sink) [custom]	High Side Voltage - Max (Bootstrap) [Max]	Package / Case	Gate Type	Channel Type	Supplier Device Package	Input Type	Rise / Fall Time (Typ) [custom]	Rise / Fall Time (Typ) [custom]	Number of Drivers	Operating Temperature [Min]	Operating Temperature [Max]
Analog Devices LTC4449EDCB	6.5 V	3 V	Half-Bridge	Surface Mount	4 V	6.5 V	4.5 A	3.2 A	42 V	8-WFDFN Exposed Pad	N-Channel MOSFET	Synchronous	8-DFN (2x3)	Non-Inverting	7 ns	8 ns	2	-40 °C	125 ¯C
Analog Devices LTC4449IDCB#TRPBF	6.5 V	3 V	Half-Bridge	Surface Mount	4 V	6.5 V	4.5 A	3.2 A	42 V	8-WFDFN Exposed Pad	N-Channel MOSFET	Synchronous	8-DFN (2x3)	Non-Inverting	7 ns	8 ns	2	-40 °C	125 ¯C
Analog Devices LTC4449EDCB#TRMPBF	6.5 V	3 V	Half-Bridge	Surface Mount	4 V	6.5 V	4.5 A	3.2 A	42 V	8-WFDFN Exposed Pad	N-Channel MOSFET	Synchronous	8-DFN (2x3)	Non-Inverting	7 ns	8 ns	2	-40 °C	125 ¯C
Analog Devices LTC4449EDCB#TRPBF	6.5 V	3 V	Half-Bridge	Surface Mount	4 V	6.5 V	4.5 A	3.2 A	42 V	8-WFDFN Exposed Pad	N-Channel MOSFET	Synchronous	8-DFN (2x3)	Non-Inverting	7 ns	8 ns	2	-40 °C	125 ¯C
Analog Devices LTC4449IDCB#TRMPBF	6.5 V	3 V	Half-Bridge	Surface Mount	4 V	6.5 V	4.5 A	3.2 A	42 V	8-WFDFN Exposed Pad	N-Channel MOSFET	Synchronous	8-DFN (2x3)	Non-Inverting	7 ns	8 ns	2	-40 °C	125 ¯C

Pricing

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

Distributor	Package	Quantity	$

Description

General part information

LTC4449 Series

The LTC4449 is a high frequency gate driver that is designed to drive two N-Channel MOSFETs in a synchronous DC/DC converter. The powerful rail-to-rail driver capability reduces switching losses in MOSFETs with high gate capacitance.The LTC4449 features a separate supply for the input logic to match the signal swing of the controller IC. If the input signal is not being driven, the LTC4449 activates a shutdown mode that turns off both external MOSFETs. The input logic signal is internally level-shifted to the bootstrapped supply, which functions at up to 42V above ground.The LTC4449 contains undervoltage lockout circuits on both the driver and logic supplies that turn off the external MOSFETs when an undervoltage condition is present. An adaptive shoot-through protection feature is also built-in to prevent the power loss resulting from MOSFET cross-conduction current.The LTC4449 is available in the 2mm × 3mm DFN package.ApplicationsDistributed Power ArchitecturesHigh Density Power Modules

Documents

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