company blog about ADI LTC4449IDCB High Speed Synchronous N-Channel MOSFET Driver

ADI LTC4449IDCB High Speed Synchronous N-Channel MOSFET Driver

Shenzhen Mingjiada Electronics Co., Ltd. as a company with rich experience and good reputation in the field of electronic components. Long-term supply of ADI LTC4449IDCB high-speed synchronous N-channel MOSFET driver, for the power conversion field to bring high-performance, high-reliability solutions.

Product Description Of LTC4449IDCB

LTC4449IDCB 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.

LTC4449IDCB 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 LTC4449IDCB 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.

LTC4449IDCB 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.

LTC4449IDCB is available in the 2mm × 3mm DFN package.

Specification Of LTC4449IDCB

Product: MOSFET Gate Drivers

Type: High-Side, Low-Side

Mounting Style: SMD/SMT

Package / Case: DFN-8

Number of Drivers: 2 Driver

Number of Outputs: 2 Output

Output Current: 4.5 A

Supply Voltage - Min: 4 V

Supply Voltage - Max: 6.5 V

Rise Time: 8 ns

Fall Time: 7 ns

Minimum Operating Temperature: - 40 ℃

Maximum Operating Temperature: + 125 ℃

Input Voltage - Max: 38 V

Operating Supply Current: 730 uA

Features Of LTC4449IDCB

4V to 6.5V VCC Operating Voltage

38V Maximum Input Supply Voltage

Adaptive Shoot-Through Protection

Rail-to-Rail Output Drivers

3.2A Peak Pull-Up Current

4.5A Peak Pull-Down Current

8ns TG Rise Time Driving 3000pF Load

7ns TG Fall Time Driving 3000pF Load

Separate Supply to Match PWM Controller

Drives Dual N-Channel MOSFETs

Undervoltage Lockout

Low Profile (0.75mm) 2mm × 3mm DFN Package

Applications Of LTC4449IDCB

The outstanding performance of the LTC4449IDCB enables it to be used in a wide range of applications. In high-efficiency buck or boost DC/DC converters, the LTC4449IDCB can significantly improve power conversion efficiency with its powerful gate drive capability and low switching loss, providing stable and reliable power supplies for equipment. In the field of automotive electronics, in the face of complex electrical environments and high requirements for power supply stability, the LTC4449IDCB's high withstand voltage, high driving capability and protection features can ensure the normal operation of automotive electronic systems. In industrial automation equipment, LTC4449IDCB its fast response and high reliability can meet the equipment on the power supply fast switching and stable output needs, improve equipment efficiency and stability.

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