LTC4449IDCB#TRMPBF

Overview

The LTC4449IDCB#TRMPBF is a high-speed synchronous N-channel MOSFET driver manufactured by Analog Devices Inc. It is designed to drive two N-channel MOSFETs in a synchronous DC/DC converter topology. The device operates with a supply voltage range of 2.7V to 18V and supports switching frequencies up to 5MHz. It features independent high-side and low-side outputs, adjustable dead-time control, and a shutdown pin for power management. The component is housed in an 8-lead SOIC package.

Feature Summary

• Provides high-speed gate driving for synchronous N-channel MOSFETs
• Includes adjustable dead-time control to prevent shoot-through
• Features independent enable inputs for each channel

Applications

• High-frequency synchronous DC/DC converters
• Multiphase step-down voltage regulators
• Point-of-load (POL) power supplies

Procurement Notes

Verify the specific suffix IDCB against the official Analog Devices datasheet to confirm the package type and temperature grade. Confirm RoHS compliance status through the manufacturer's current documentation. Ensure the ordering part number matches the exact tape-and-reel quantity specified in the procurement guidelines.

Selection Notes

Select this driver when designing synchronous buck converters requiring precise timing control. Evaluate the need for adjustable dead-time to optimize efficiency at various load currents. Consider the operating voltage range relative to the logic levels of the PWM controller being used.

Part Context

This component belongs to the LTC444x family of gate drivers from Analog Devices. It is specifically engineered for applications demanding fast switching speeds and reliable operation in multiphase power conversion systems. The device complements controllers like the LTC3892 or similar multiphase VRMs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.