Description

The FAN3121 and FAN3122 MOSFET drivers are designed to drive N-channel enhancement MOSFETs in low-side switching applications by providing high peak current pulses. The drivers are available with either TTL input thresholds (FAN312xT) or VDD-proportional CMOS input thresholds (FAN312xC). Internal circuitry provides an under-voltage lockout function by holding the output low until the supply voltage is within the operating range.

Features

■ Industry-Standard Pin-out with Enable Input

■ 4.5-V to 18-V Operating Range

■ 11.4 A Peak Sink at VDD = 12 V

■ 9.7-A Sink / 7.1-A Source at VOUT = 6 V

■ Inverting Configuration (FAN3121) and

Non-Inverting Configuration (FAN3122)

■ Internal Resistors Turn Driver Off If No Inputs

■ 23-ns / 19-ns Typical Rise/Fall Times (10 nF Load)

■ 20-ns Typical Propagation Delay Time

■ Choice of TTL or CMOS Input Thresholds

■ MillerDrive™ Technology

■ Available in Thermally Enhanced 3x3 mm 8-Lead

MLP or 8-Lead SOIC Package (Pb-Free Finish)

■ Rated from –40°C to +125°C

■ Automotive Qualified to AEC-Q100 (F085 Versions)

Applications

■ Synchronous Rectifier Circuits

■ High-Efficiency MOSFET Switching

■ Switch-Mode Power Supplies

■ DC-to-DC Converters

■ Motor Control

■ Automotive-Qualified Systems (F085 Versions)