Replacement for LTC4449 High Speed Synchronous N-Channel MOSFET Gate Driver

PC1621

Replacement for LTC4449 High Speed Synchronous N-Channel MOSFET Gate Driver [Copy link]

1. Product Features

15ns typical propagation delay

5ns high-side/low-side matching

Rail-to-rail gate drive

Adaptive dead zone and shoot-through protection

3A peak source current and 4.5A peak sink current

Drives a half-bridge consisting of 2 NMOS

Undervoltage protection

Overheat protection

2. Functional Description

PC4449 Product Brochure

PC4449 is a gate driver developed for high frequency and high efficiency applications. It is used to drive a half-bridge circuit composed of two NMOS. Its rail-to-rail output driver can reduce the switching loss caused by high junction capacitance MOSFE.

PC4449 provides a separate logic power supply to match the controller level, making it compatible with a variety of different signal levels. The chip contains undervoltage protection to prevent the external MOS tube from working abnormally at low voltage. PC4449 provides adaptive dead zone and direct protection to avoid losses caused by MOSFET overlap conduction.

3. Product Application

Synchronous Buck Converter

Half-bridge, full-bridge, forward, push-pull converters

4. Package Introduction

This product adopts DFN2X3-8, the package size is about 2x3mm