
ON Semiconductor
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)
• 18 ns to 23 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
• These are Pb−Free Devices
APPLICATIONs
• Synchronous Rectifier Circuits
• High−Efficiency MOSFET Switching
• Switch−Mode Power Supplies
• DC−to−DC Converters
• Motor Control