Description

The FAN3223-25 family of dual 4 A gate drivers is designed to drive N-channel enhancement-mode MOSFETs in low-side switching applications by providing high peak current pulses during the short switching intervals. The driver is available with either TTL or CMOS input thresholds. Internal circuitry provides an under-voltage lockout function by holding the output LOW until the supply voltage is within the operating range. In addition, the drivers feature matched internal propagation delays between A and B channels for applications requiring dual gate drives with critical timing, such as synchronous rectifiers. This also enables connecting two drivers in parallel to effectively double the current capability driving a single MOSFET.

Features

■ Industry-Standard Pinouts

■ 4.5-V to 18-V Operating Range

■ 5-A Peak Sink/Source at VDD = 12 V

■ 4.3-A Sink / 2.8-A Source at VOUT = 6 V

■ Choice of TTL or CMOS Input Thresholds

■ Three Versions of Dual Independent Drivers:

- Dual Inverting + Enable (FAN3223)

- Dual Non-Inverting + Enable (FAN3224)

- Dual-Inputs (FAN3225)

■ Internal Resistors Turn Driver Off If No Inputs

■ MillerDrive? Technology

■ 12-ns / 9-ns Typical Rise/Fall Times (2.2-nF Load)

■ Under 20-ns Typical Propagation Delay Matched within 1 ns to the Other Channel

■ Double Current Capability by Paralleling Channels

■ 8-Lead 3x3 mm MLP or 8-Lead SOIC Package

■ Rated from –40°C to +125°C Ambient

■ Automotive Qualified to AEC-Q100 (F085 Version)

Applications

■ Switch-Mode Power Supplies

■ High-Efficiency MOSFET Switching

■ Synchronous Rectifier Circuits

■ DC-to-DC Converters

■ Motor Control

■ Automotive-Qualified Systems (F085 version)